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| PULSEGUARD(R) SUPPRESSOR SURFACE MOUNT ESD SUPPRESSORS PRODUCT OVERVIEW 8-Line CA10 Obsoleted Part. Please consider PGB0010603, PGB002ST23 or PGB0040805 for new designs. PulseGuard ESD Suppressors help protect sensitive electronic equipment against electrostatic discharge (ESD). They supplement the on-chip protection of integrated circuitry and are best suited for low-voltage, high-speed applications where low capacitance is important. Applications such as computer I/O ports (eg. video displays), network hardware, cell phone data ports, point-ofsale terminals, and industrial controls will benefit from this new technology. PulseGuard suppressors use polymer composite materials to suppress fast-rising ESD transients (as specified in IEC 61000-4-2 and MIL-STD883E). FEATURES * Ultra-low capacitance * Low leakage current * Fast response time * Bi-directional * Withstands multiple ESD strikes * Packaged in chip array (capacitor/resistor) format * Compatible with pick-and-place processes * Available on 2,000 piece reels (EIA-RS481) PHYSICAL SPECIFICATIONS Materials: Body: Glass Epoxy Terminations: Tin-Lead Soldering Parameters: Wave solder -- 260oC, 10 seconds maximum Reflow solder -- 260oC, 30 seconds maximum Operating Temperature Range: -65oC to +125oC TYPICAL APPLICATIONS * Computer I/O ports (e.g. video displays) * Computer peripherals * Network hardware/ports (e.g. Gigabit Ethernet) * Point-of-Sale terminals * Cell phone data ports * Audio/video components * Test Equipment * Medical Equipment ORDERING INFORMATION Catalog Number Pieces per Reel PGB008CA10PR 2,000 ELECTRICAL CHARACTERISTICS Trigger Voltage1 Clamping Voltage1 Rated Voltage Capacitance2 Response Time1 Leakage Current3 ESD Pulse Withstand1 1,000V, typical 150V, typical 24VDC, max 0.055pF <1ns <1nA 1,000 pulses, minimum DESIGN CONSIDERATION Because of the fast rise-time of the ESD transient, placement of PulseGuard suppressors is a key design consideration. To achieve optimal ESD suppression, the devices should be placed on the circuit board as close to the source of the ESD transient as possible. Install PulseGuard suppressors directly behind the connector so that they are the first board-level circuit component encountered by the ESD transient. They are connected from signal/data line to ground. Notes: 1. 8 kV direct discharge method, per IEC 61000-4-2. 2. Measured at 1 MHz. 3. Measured at 6 VDC. Testing at fast ESD pulse rates (1-20Hz) may cause a change in leakage current performance (6A, max). 1 PULSEGUARD(R) SUPPRESSOR SURFACE MOUNT ESD SUPPRESSORS 8-Line CA10 Generalized PulseGuard Response to ESD (Positive and Negative Polarity ESD Pulses) Trigger Voltage Generalized I-V Curve (Positive and Negative Polarity ESD Pulses) Trigger Voltage Current (A) Voltage (V) Clamping Voltage Clamping Voltage Voltage (V) Time (ns) DEFINITIONS Trigger Voltage: The measured peak voltage across the ESD suppressor before it transitions from high to low resistance. It is manifested as a "spike" before the clamping voltage is achieved. This voltage is typically well below the damage threshold of on-chip IC protection. Clamping Voltage: The voltage level to which the ESD impulse voltage is reduced. This is the voltage that the suppressor holds at, until the ESD transient energy is dissipated. ESD Impulse Voltage: Also known as the ESD Threat Voltage. This is the voltage that is "zapped" into the circuit. Voltages generated by people can exceed 15 kV. The IEC 61000-4-2 defines four levels of impulse voltage for testing purposes: SEVERITY LEVEL 1 2 3 4 AIR DISCHARGE 2 kV 4 kV 8 kV 15 kV DIRECT DISCHARGE 2 kV 4 kV 6 kV 8 kV Capacitance vs. Frequency 70 ** Note: 1,000 fF = 1 pF Capacitance (fF) 60 50 40 0.5 1.0 1.5 2.0 Frequency (GHz) Carrier Tape Specifications Parts are delivered on 7" (178mm) reel, plastic carrier tape Tt Dd + + Ds + + Tw Pd + + + Ph Pw Ct Ps Description C t - Cover tape thickness Dd - Drive hole diameter Ds - Drive hole spacing Pd - Pocket depth Ph - Pocket height Ps - Pocket spacing Pw - Pocket width Tt - Carrier tape thickness Tw - Carrier tape width Measurement (mm) 0.06 1.50 4.00 1.02 5.38 4.00 2.44 0.30 12.00 2 PULSEGUARD(R) SUPPRESSOR SURFACE MOUNT ESD SUPPRESSORS 8-Line CA10 Test Set-up for IEC 61000-4-2 Waveform, 2kV-15kV Device under test Tek P6156 Probe (Voltage measurement) KeyTek pulser 2,000- 15,000 V Brown tip (x100) x10 Faraday cage Ground return x10 Tektronic TDS 684B Blue tip (x10) .5 ohm shunt (10-5 ohms in parallel) Tek P6156 Probe (Current measurement) Reference Schematics: Recommended Pad Layout: Device Dimensions: 0.083" 0.007 Equivalent Circuit: d + + e 0.043" 10 1 2 0.198" 0.008 9 8 7 6 5 + f g 3 4 a b + c b a *Dimension 'a' is: 0.026" *Dimension 'b' is: 0.015" Solder Method Wave Solder Reflow Solder a 0.036 0.025 b 0.060 0.050 Pad Dimensions (in.) c d e 0.119 0.101 0.047 0.051 0.043 0.043 f 0.030 0.030 g 0.198 0.191 Note: Pins 5 and 10 (Common) are typically connected to chassis ground. However since PulseGuard suppressors are bi-directional, the system voltage bus can also be used as the ESD "dump". 3 |
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