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rev. page date 1 of 11
08/2007
PART NUMBER: VPOL5A-5-SMT
DESCRIPTION: point of load converter
features * high efficiency topology, typically 94% at 3.3 Vdc * industry standard footprint * wide ambient temperature range, -40C to +85C * cost efficient open frame design * programmable output voltage via external resistor from 0.75 to 3.63 Vdc * no minimum load requirement (stable at all loads) * remote on/off * remote sense compensation * fixed switching frequency * continuous short-circuit protection and over current protection * over-temperature protection (OTP) * monotonic startup with pre-bias at the output. * UL/IEC/EN60950-1 (E222736) certified.
1. INTRODUCTION 2. VPOL5A-5-SMTCONVERTER FEATURES 3. GENERAL DESCRIPTION 3.1 Electrical Description 3.2 Thermal Packaging and Physical Design. 4. TECHNICAL SPECIFICATIONS 5. MAIN FEATURES AND FUNCTIONS 5.1 Operating Temperature Range 5.2 Over-Temperature Protection (OTP) 5.3 Output Voltage Adjustment 5.4 Safe Operating Area (SOA) 5.5 Over Current Protection 5.6 Remote On/Off 5.7 UVLO (Under-Voltage Lockout) 6. SAFETY 6.1 Input Fusing and Safety Considerations. 7. APPLICATIONS 7.1 Layout Design Challenges. 7.2 Convection Requirements for Cooling 7.3 Thermal Considerations 7.4 Power De-Rating Curves 7.5 Efficiency vs Load Curves 7.6 Input Capacitance at the Power Module 7.7 Test Set-Up 7.8 VPOL5A-5-SMT Series Output Voltage Adustment. 7.9 Output Ripple and Noise Measurement 7.10 Output Capacitance 7.11 SMT Reflow Profile 8. MECHANICAL OUTLINE DIAGRAMS 8.1 SIP/SMT05 Mechanical Outline Diagrams 8.2 SMT Tape and Reel Dimensions
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
rev. page date 2 of 11
08/2007
PART NUMBER: VPOL5A-5-SMT
DESCRIPTION: point of load converter
Q1
+VIN
L1
+VO
1. Introduction
This application note describes the features and functions of V-Infinity's VPOL5A-5-SMT series of Non Isolated DC-DC Converters. These are highly efficient, reliable and compact, high power density, single output dc-dc converters. These "Point of Load" modules serve the needs specifically of the fixed and mobile telecommunications and computing market, employing economical distributed Power Architectures. The VPOL5A-5-SMT series provide precisely regulated output voltage range from 0.75V to 3.63 Vdc over a wide range of input voltage (Vi=3.0 - 5.5 Vdc) and can operate over an ambient temperature range of -40 +85 synchronous rectification and drive control techniques. The modules are fully protected against short circuit and overtemperature conditions. V-Infinity's world class automated manufacturing methods, together with an extensive testing and qualification program, ensure that all VPOL5A-5-SMT series converters are extremely reliable. to . Ultra-high efficiency operation is achieved through the use of
ON/OFF COM COM
C1
Q2
D1
C2
R1
PWM IC
ERR AMP
R trim
TRIM
R2
Figure 1. Electrical Block Diagram
3.2 Thermal Packaging and Physical Design.
The VPOL5A-5-SMT series uses a multi-layer FR4 PCB construction. All surface mount power components are placed on one side of the PCB, and all low-power control components are placed on the other side. Thus, the Heat dissipation of the power components is optimized, ensuring that control components are not thermally stressed. The converter is an open-frame product and has no case or case pin. The open-frame design has several advantages over encapsulated closed devices. Among these advantages are: Efficient Thermal Management: the heat is removed from the heat generating components without heating more sensitive, small signal control components. Environmental: Lead free open-frame converters are more easily re-cycled. Cost Efficient: No encapsulation. Cost efficient open-frame construction. Reliable: Efficient cooling provided by open frame construction offers high reliability and easy diagnostics.
2. VPOL5A-5-SMTConverter Features
High efficiency topology, typically 94% at 3.3 Vdc Industry standard footprint Wide ambient temperature range, -40 C to +85 C Cost efficient open frame design Programmable output voltage via external resistor from 0.75 to 3.63 Vdc No minimum load requirement (Stable at all loads) Remote ON/OFF Remote sense compensation Fixed switching frequency Continuous short-circuit protection and over current protection Over-temperature protection (OTP) Monotonic Startup with pre-bias at the output. UL/IEC/EN60950 Certified.
3. General Description
3.1 Electrical Description
A block diagram of the VPOL5A-5-SMT Series converter is shown in Figure 1. Extremely high efficiency power conversion is achieved through the use of synchronous rectification and drive techniques. Essentially, the powerful VPOL5A-5-SMT series topology is based on a non-isolated synchronous buck converter. The control loop is optimized for unconditional stability, fast transient response and a very tight line and load regulation. In a typical pre-bias application the VPOL5A-5SMT series converters do not draw any reverse current at start-up. The output voltage can be adjusted from 0.75 to 3.63vdc, using the TRIM pin with a external resistor. The converter can be shut down via a remote on/off input that is referenced to ground. This input is compatible with popular logic devices; a 'positive' logic input is supplied as standard. Positive logic implies that the converter is enabled if the remote on/off input is high (or floating), and disabled if it is low. The converter is also protected against over-temperature conditions. If the converter is overloaded or the ambient temperature gets too high, the converter will shut down to protect the unit.
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
rev. page date 3 of 11
08/2007
PART NUMBER: VPOL5A-5-SMT
DESCRIPTION: point of load converter
4. Technical Specifications
(All specifications are typical at nominal input, full load at 25 PARAMETER ABSOLUTE MAXIMUM RATINGS
Input Voltage Continuous Operating Temp erature See Thermal Considerations Section Storage Temperature
unless otherwise noted.)
Device Min. Typical Max. Units
NOTES and CONDITIONS
ALL ALL
0 -40 ALL -55 3.0 2.0 1.9 0.1 5
5.8 +85 +125 5.5
Vdc
INPUT CHARACTERISTICS
Operating Input Voltage Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Hysteresis Voltage Maximum Input Current Vo,set Vin-0.5 Vdc ALL ALL ALL ALL ALL Vdc Vdc Vdc Vdc 5 25 30 30 35 35 35 35 10 0.1 150 A
Vin=0 to 5.5 Vdc , Io=Io,max. Vo=0.75V Vo=1.2V Vo=1.5V Vo=1.8V Vo=2.0V Vo=2.5V Vo=3.3V Shutdown input idle current
No-Load Input Current
ALL
mA
Off Converter Input Current Inrush Current (I t) Input Reflected-Ripple Current
2
ALL ALL
mA As mA
2
P-P thru 1uH inductor, 5Hz to 20MHz
ALL
OUTPUT CHARACTERISTIC
Output Voltage Set Point Output Voltage Trim Adjustment Range Output Voltage Regulation Load Regulation Line Regulation Tempera ture Coefficient Output Voltage Ripple and Noise Peak-to-Peak RMS External Capacitive Load Operating Output Current Range Output DC Current-Limit Inception Shout Circuit Protection Output Voltage =90% Nominal Output Voltage Continuous with Hiccup Mode Io=Io.min to Io.max Vin=low line to high line Ta=-40 to 85 ALL ALL ALL -0.5 -0.4 -0.03 +0.5 +0.4 +0.03 % % %/ Vin=Nominal Vin , Io=Io.max, Tc=25 Selected by an external resistor ALL ALL -1.5% Vo,set +1.5% 0.75 3.63 Vdc Vdc
5Hz to 20MHz bandwidth Full Load, 1uF ceramic and 10uF tantalum Full Load, 1uF ceramic and 10uF tantalum Low ESR ALL ALL ALL ALL ALL 0 6 9.5 50 20 3000 5 15 mV mV uF A A
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
rev. page date 4 of 11
08/2007
PART NUMBER: VPOL5A-5-SMT
DESCRIPTION: point of load converter
PARAMETER DYNAMIC CHARACTERISTICS
Output Voltage Transient Response Error Brand Setting Time (within 1% Vout nominal)
NOTES and CONDITIONS
Device
Min.
Typical Max.
Units
50% Step Load Change, di/dt=0.1A/us 50% Step Load Change, di/dt=0.1A/us
ALL ALL
200 200
mV us
EFFICIENCY
Vo=0.75V Vo=1.2V Vo=1.5V Vo=1.8V Vo=2.0V Vo=2.5V Vo=3.3V Non-isolation 79 85 87 89 90 92 94 0 300 0 0.4
100% Load
ALL
%
ISOLATION CHARACTERISTICS
Input to Output ALL ALL Standard Model Vdc KHz Vdc Vdc Vdc Vdc mA mA ms ms ms
FEATURE CHARACTERISTICS
Switching Frequency On/Off Control, Positive Logic Remote On/Off Logic Low (Module Off) Logic High (Module On) On/Off Control, Negative Logic Remote On/Off Logic Low (Module On) Logic High (Module Off) On/Off Current (for both remote on/off logic) Leakage Current (for both remote on/off logic) Turn-On Delay and Rise Time Turn-On Delay Time, From On/Off Control Turn-On Delay Time, From Input Output Voltage Rise Time Over Temperature Protection
or Open Circuit or Open Circuit Ion/off at Von/off =0.0V Logic High, Von/off=14V Von/off to 10%Vo,set Vin,min. to 10%Vo,set 10%Vo,set to 90%Vo,set
Vin
Suffix "N" Model ALL ALL ALL ALL ALL ALL per MIL-HDBKALL ALL
0 2.8
0.4 Vin 1 1 2 2 4.5 120 1.5 2.3
GENERAL SPECIFICATIONS
MTBF Weight Dimensions SIP packages SMT packages Io=100%of Io.max;Ta=25 217F M hours grams
0.9x0.4x0.22 inches (22.9x10.16x5.6 mm) 0.8x0.45x0.24 inches(20.3x11.43x6.09 mm)
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
rev. page date 5 of 11
08/2007
PART NUMBER: VPOL5A-5-SMT
DESCRIPTION: point of load converter
5. Main Features and Functions
5.1 Operating Temperature Range
V-Infinity's VPOL5A-5-SMT series converters highly efficient converter design has resulted in its ability to operate over a wide ambient temperature environment ( -40 to 85 ). Due consideration must be given to the de-rating curves when ascertaining maximum power that can be drawn from the converter. The maximum power drawn is influenced by a number of factors, such as: Input voltage range. Output load current. Air velocity (forced or natural convection). Mounting orientation of converter PCB with respect to the Airflow. Motherboard PCB design, especially ground and power planes. These can be effective heat sinks for the converter.
5.4 Safe Operating Area (SOA)
Figure 2 provides a graphical representation of the Safe Operating Area (SOA) of the converter. This representation assumes ambient operating conditions such as airflow are met as per thermal guidelines provided in Sections 7.2 and 7.3.
Vo
Vo,nom VOLTAGE (V)
Safe Operating Area
5.2 Over-Temperature Protection (OTP)
The VPOL5A-5-SMT Series converters are equipped with non-latching over-temperature protection. A te mperature sensor monitors the temperature of the hot spot (typically, top switch). If the temperature exceeds a threshold of 120 C (typical) the converter will shut down, disabling the output. When the temperature has decreased the converter will automatically restart. The over-temperature condition can be induced by a variety of reasons such as external overload condition or a system fan failure.
Io,max Io,CL Io CURRENT (A)
Figure 2. Maximum Output Current Safe Operating Area
5.5 Over Current Protection
All different voltage models have a full continuous short-circuit protection. The unit will auto recover once the short circuit is removed. To provide protection in a fault condition, the unit is equipped with internal overcurrent protection. The unit operates normally once the fault condition is removed. The power module will supply up to 150% of rated current. In the event of an over current converter will go into a hiccup mode protection.
5.3 Output Voltage Adjustment
Section 7.8 describes in detail as to how to trim the output voltage with respect to its set point. The output voltage on all models is trimmable in the range 0.75 - 3.63 Vdc.
5.6 Remote On/Off
The remote on/off input feature of the converter allows external circuitry to turn the converter ON or OFF. Active-high remote on/off is available as standard. The VPOL5A-5-SMT series converters are turned on if the remote on/off pin is high, or left open or floating. Setting the pin low will turn the converter `Off'. The signal level of the remote on/off input is defined with respect to ground. If not using the remote on/off pin, leave the pin open (module will be on). The part number suffix "N" is Negative remote on/off version. The unit is guaranteed OFF over the full temperature range if this voltage level exceeds 2.8 Vdc. The converters are turned on If the on/off pin input is low or left open. The recommended SMTremote on/off drive circuit as shown as figure 3, 4.
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
rev. page date 6 of 11
08/2007
PART NUMBER: VPOL5A-5-SMT
DESCRIPTION: point of load converter
proper low impedance tracks between power module, input and output
+Vin Remote ON/OFF
+Vo
grounds. The recommended SMT footprint as shown as figure 5.
Recommended Pad Layout
Dimensions are in Inches ( millimetes )
ON/OFF Control
Q1
VPOL5A-5-SMT
Common Common
0.180 (4.57)
0.160 (4.06)
0.160 (4.06)
0.190 (4.83)
VOUT 0.340 (8.64)
TRIM
GND 0.350 (8.89)
Figure 3. Positive Remote On/Off Input Drive Circuit
+Vin +Vo
ON/OFF
0.010 (0.25)
VIN
Q1
0.06 (1.5)
0.05 (1.3)
VPOL5A-5-SMT
ON/OFF Control Remote ON/OFF Common Common
0.690 (17.53) PAD SIZE MIN : 0.120" x 0.095 " MAX : 0.135" x 0.110 "
Figure 5. Recommended SMT Footprint (Top View)
Figure 4. Negative Remote On/Off Input Drive Circuit
5.7 UVLO (Under-Voltage Lockout)
The voltage on the Vcc pin determines the start of the operation of the Converter. When the input Vcc rises and exceeds about 2.0V the converter initiates a soft start. The UVLO function in the converter has a hysteresis (about 100mV) built in to provide noise immunity at start-up.
6. Safety
6.1 Input Fusing and Safety Considerations.
Agency Approvals: The power Supply shall be submitted to and receive formal approval from the following test agencies. 1.The power supply shall be approved by a nationally recognized testing laboratory to UL/CSA 60950 3 Edition (North America) and EN60950 (International) 2. CB Certificate from an internationally recognized test house in accordance with EN 60950. The VPOL5A-5-SMT series converters do not have an internal fuse. However, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a time-delay fuse with a maximum rating of 10A.
rd
7. Applications
7.1 Layout Design Challenges.
In optimizing thermal design the PCB is utilized as a heat sink. Also some heat is transferred from the SMT module to the main board through connecting pins. The system designer or the end user must ensure that other components and metal in the vicinity of the VPOL5A-5-SMT series meet the spacing requirements to which the system is approved. Low resistance and low inductance PCB layout traces are the norm and should be used where possible. Due consideration must also be given to
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
rev. page date 7 of 11
08/2007
PART NUMBER: VPOL5A-5-SMT
DESCRIPTION: point of load converter
TYPICAL POWER DERATING FOR 5Vin 3.3Vout
6.0 5.0 Output Current(A) 4.0 3.0 2.0 1.0 0.0 0 10 20 30 40 50 60 70 80 90 100
o Ambient Temperature( C)
0LFM 100LFM 200LFM
Figure 3. Typical Power De-rating for 5V IN 3.3Vout
NOTE:
1. specific input & output derating curves available, please contact V-Infinity for detail
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
rev. page date 8 of 11
08/2007
PART NUMBER: VPOL5A-5-SMT
DESCRIPTION: point of load converter
7.5 Efficiency vs Load Curves
VPOL5A-5-SMT Vo=3.3V (Eff Vs Io)
100% 95% 100% 95%
VPOL5A-5-SMT Vo=2.5V (Eff Vs Io)
Efficincy (%)
90% 85% 80% 75% 70% 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Efficincy (%)
90% 85% 80% 75% 70% 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
4.5V 5.0V 5.5V
3.0V 5.0V 5.5V
Current Load (A)
VPOL5A-5-SMT Vo=1.8V (Eff Vs Io)
100% 95% 100% 95%
Current Load (A)
VPOL5A-5-SMT Vo=1.5V (Eff Vs Io)
Efficincy (%)
90% 85% 80% 75% 70% 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Efficincy (%)
90% 85% 80% 75% 70% 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
3.0V 5.0V 5.5V
3.0V 5.0V 5.5V
Current Load (A)
VPOL5A-5-SMT Vo=1.2V (Eff Vs Io)
100% 95% 100% 95% 90%
Current Load (A)
VPOL5A-5-SMT Vo=0.75V (Eff Vs Io)
Efficincy (%)
90% 85% 80% 75% 70% 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Efficincy (%)
85% 80% 75% 70% 65% 60% 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
3.0V 5.0V 5.5V
3.0V 5.0V 5.5V
Current Load (A)
Current Load (A)
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
rev. page date 9 of 11
08/2007
PART NUMBER: VPOL5A-5-SMT
DESCRIPTION: point of load converter
VNL is the output voltage at no load
7.6 Input Capacitance at the Power Module
The SMTconvert ers must be connected to a low AC source impedance. To a void problems with loop stability source inductance should be low. Also, the input capacitors should be placed close to the converter input pins to de-couple distribution inductance. However, the external input capacitors are chosen for suitable ripple handling capability. Low ESR polymers are a good choice. They have high capacitance, high ripple rating and low ESR (typical <100mohm). Electrolytic capacitors should be avoided. Circuit as shown in Figure 10 represents typical measurement methods for ripple current. Input reflected-ripple current is measured with a simulated source Inductance of 1uH. Current is measured at the input of the module. The value of line regulation is defined as:
Line.reg =
VHL _ VLL x 100% VLL
Where: VHL is the output voltage of maximum input voltage at full load. VLL is the output voltage of minimum input voltage at full load.
Current Meter
A
Power Supply +
+Vin
+Vo +Sense
A
V 100uF Voltage Meter
VPOL5A-5-SMT
Common Common
V
Load
To Oscilloscope L1 1uH Power Supply + 2*100uF Tantalum +Vin
Figure 11. VPOL5A-5-SMT Test Setup
VPOL5A-5-SMT
220uF ESR<0.1ohm
Common
Figure 10. Input Reflected-Ripple Test Setup
7.7 Test Set-Up
The basic test set-up to measure parameters such as efficiency and load regulation is shown in Figure 11. Things to not e are that this converter is non-isolated, as such the input and output share a common ground. These grounds should be connected together via low impedance ground plane in the application circuit. When testing a converter on a bench set-up, ensure that -Vin and -Vo are connected together via a low impedance short to ensure proper efficiency and load regulation measurements are being made. When testing the V-Infinity's VPOL5A-5-SMT series under any transient conditions please ensure that the transient response of the source is sufficient to power the equipment under test. We can calculate the Efficiency Load regulation and line regulation. The value of efficiency is defined as:
c=
Where:
Vo x Io x 100% Vin x Iin
Vo is output voltage, Io is output current, Vin is input voltage, Iin is input current. The value of load regulation is defined as:
Load .reg =
VFL _ VNL =100% VNL
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
rev. page date 10 of 11
08/2007
PART NUMBER: VPOL5A-5-SMT
DESCRIPTION: point of load converter
7.8 VPOL5A-5-SMT Series Output Voltage Adustment.
The output Voltage of the VPOL5A-5-SMTS33A can be adjusted in the range 0.75V to 3.63V by connecting a single resistor on the motherboard (shown as Rtrim) in Figure 12. When Trim resistor is not connected the output voltage defaults to 0.75V
7.9 Output Ripple and Noise Measurement
The test set-up for noise and ripple measurements is shown in Figure 13. a coaxial cable with a 50ohm termination was used to prevent impedance mismatch reflections disturbing the noise readings at higher frequencies
+Vin +Vo
+Vin
+Vo Trim
VPOL5A-5-SMT
10uF Tant.
1uF Ceramic
R-Load Test Jack
VPOL5A-5-SMT
R-Load R trim-up
Common Common
Common
Common
Figure 13. Output Voltage Ripple and Noise Measurement Set-Up
Figure 12. Trim-up Voltage Setup
The value of Rtrim-up defined as:
7.10 Output Capacitance
V-Infinity's VPOL5A-5-SMT series converters provide unconditional stability with or without external capacitors. For good transient response low ESR output capacitors should be located close to the point of load. For high current applications point has already been made in layout considerations for low resistance and low inductance tracks. Output capacitors with its associated ESR values have an impact on loop stability and bandwidth. V-Infinity's converters are designed to work with load capacitance up-to 3,000uF. It is reco mmended that any additional capacitance, Maximum 3,000uF and low ESR, be connected close to the point of load and outside the remote compensation point.
Rtrim = (
Where:
21070 _ 5110 ) Vo _ 0.75
Rtrim-up is the external resistor in ohm, Vo is the desired output voltage To give an exa mple of the above calculation, to set a voltage of 3.3 Vdc, Rtrim is given by:
Rtrim = (
Rtrim = 3153 ohm
21070 _ 5110 ) Vo _ 0.75
7.11 SMT Reflow Profile
An example of the SMT reflow profile is given in Figure 14. Equipment used: SMD HOT AIR REFLOW HD-350SAR Alloy: AMQ-M293TA or N C-SMQ92 IND-82088 SN63
For various output values various resistors are calculated and provided in Table 3 for co nvenience.
240 200
TEMPERATURE (C)
REFLOW PROFILE
Vo,set (V) 0.75 1.20 1.50 1.80 2.00 2.50 3.30 3.63
Rtrim (Kohm) Open 41.71 22.98 14.96 11.75 6.93 3.15 2.20
160 120 80 40 0 0 30 60 90 120 150 180 210 240
TIME (SECONDS)
Table 3 - Trim Resistor Values
Figure 14 SMT Reflow Profile
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382
rev. page date 11 of 11
08/2007
PART NUMBER: VPOL5A-5-SMT
DESCRIPTION: point of load converter
8. Mechanical Outline Diagrams
8.1 VPOL5A-5-SMT Mechanical Outline Diagrams
Dimensions are in millimeters and inches Tolerance: x.xx 0.02 in. (0.5mm) , x.xxx 0.010 in. (0.25 mm) unless otherwise noted
8.2 SMT Tape and Reel Dimensions
The Ta pe Reel dimensions for the SMT module is shown in Figure 16.
BOTTOM VIEW OF BOARD
0.80 (20.3) 0.190 (4.83) 0.160 (4.06) 0.160 (4.06) 0.180 (4.06) 0.24 (6.09)
0.062 (1.57)
0.35 (8.9)
GND
TRIM
VOUT
0.340 (8.64) 0.450 (11.43)
VIN 0.062 (1.57)
ON/OFF 0.06 (1.5)
Surface Mount Contact 5 Places 0.090 0.05 (1.3) (2.29) Dimensions are in Inches (millimeters)
Toleranc es :x.xx O 0.02in.( x.x O 0.5mm) , unless otherwise noted x.xxx O 0.010in. ( x.xx O 0.25mm)
Figure 15 VPOL5A-5-SMT Mechanical Outline Diagram
W Ao Bo Ko P F E D D1 Po P2 t
Figure 16 - SMT Tape a nd Reel Dimensions
20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2382

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