View SM8A27_45123.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

NEW PRODUCT
NEW PRODUCT
NEW PRODUCT
SM8A27 TRANSIENT SUPPRESSOR
SURFACE MOUNT AUTOMOTIVE TRANSIENT VOLTAGE SUPPRESSOR
Zener Voltage - 27.0 Volts
* ED T
DO-218
0.628(16.0) 0.592(15.0) 0.539(13.7) 0.524(13.3)
Peak Pulse Current - 130.0 Amps FEATURES
Ideally suited for load dump protection Plastic package has Underwriters Laboratory Flammability Classification 94V-0 High temperature stability due to unique oxide passivation Exclusive patented PAR oxide passivated chip construction Integrally molded heatsink provides a very low thermal resistance for maximum heat dissipation Low leakage current at TJ=175C Low forward voltage drop High temperature soldering guaranteed: 260C for 10 seconds at terminals
N TE PA
0.116(3.0) 0.093(2.4)
0.413(10.5) 0.342(8.7) 0.374(9.5) 0.327(8.3)
0.366(9.3) 0.343(8.7) 0.406(10.3) 0.382(9.7)
LEAD 1 0.197(5.0) 0.185(4.7) 0.028(0.7) 0.020(0.5) 0.098(2.5) 0.059(1.5)
0.138(3.5) 0.098(2.5)
MECHANICAL DATA
0.028(0.7) 0.012(0.3) LEAD 2/METAL HEATSINK
*Patent #Os, 4,980,315,
5,166,769, 5,278,095
Dimensions in inches and (millimeters)
Case: Molded plastic body, surface mount with heatsink integrally mounted in the encapsulation Terminals: Plated, solderable per MIL-STD-750, Method 2026 Polarity: Heatsink is anode Mounting Position: Any Weight: 0.091 ounce, 2.58 grams
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25C ambient temperature unless otherwise specified. SYMBOLS SM8A27 UNITS
Steady state power dissipation Non-repetitive peak reverse surge current for 10ms/10ms exponentially decaying waveform Maximum working peak stand-off voltage Minimum reverse zener voltage at 10mA Maximum reverse zener voltage at 10mA Maximum zener voltage temperature coefficient at IZ=10mA Peak forward surge current, 8.3ms single half sine-wave Maximum clamping voltage for 10ms/10ms exponentially decaying waveform at IPP=75A Maximum instantaneous forward voltage at 6.0A (NOTE 1) Maximum reverse leakage current at rated VWM Maximum thermal resistance junction to case Operating junction and storage temperature range
NOTE: (1) Measured on a 300ms square pulse width NOTICE: Advanced product information is subject to change without notice
PD IRSM VWM VZ VZ Vztc IFSM VC VF IR RQJC TJ, TSTG
8.0 130.0 22.0 24.0 30.0 36.0 700.0 40.0 0.98 1.0 50.0 0.90 -55 to +175
Watts Amps Volts Volts Volts m V/C Amps Volts Volts mA C/W C
TJ=25C TJ=175C
2/23/99
RATINGS AND CHARACTERISTIC CURVES SM8A27
FIG. 1 - POWER DERATING CURVE INSTANTANEOUS FORWARD CURRENT, AMPS
8.0
POWER DISSIPATION, WATTS
100
FIG. 2 - TYPICAL INSTANTANEOUS FORWARD CHARACTERISTICS
7.0 6.0 5.0 4.0 3.0 2.0 1.0 0 0 25 50 75 100 125 150 175 200
175C
25C
10
1
0.1
0.01 0.35
0.45
0.55
0.65
0.75
0.85
0.95
CASE TEMPERATURE, C FIG. 3 - PULSE WAVEFORM
FORWARD VOLTAGE, VOLTS
10,000
REVERSE SURGE POWER, WATTS
FIG. 4 - REVERSE POWER CAPABILITY
150
INPUT PEAK PULSE CURRENT %
TA=25C PULSE WIDTH (td) is DEFINED as the POINT WHERE the PEAK CURRENT DECAYS to 50% of IPP
tr=10ms
100
PEAK VALUE IPP
50
HALF VALUE -
IPP 2
10/1000ms
15 20 25 30 35 t, TIME, ms FIG. 5 - LOAD DUMP POWER CHARACTERISTICS (10ms EXPONENTIAL WAVEFORM) 6,000
LOAD DUMP POWER, WATTS
0
td
0
5
10
40 1,000 10 100
PULSE WIDTH (ms) - 1/2 IPP EXPONENTIAL WAVEFORM FIG. 6 - TYPICAL REVERSE CHARACTERISTICS
100 5,000 4,000 3,000 2,000 1,000 0 25 50 75 100 125 150 175
CASE TEMPERATURE, C INSTANTANEOUS REVERS CURRENT, MICRO AMPERES
10
175C
1 0.1 0.01
25C
0.001 0.0001 5
20
65 50 35 PERCENTAGE OF V(BR), %
80
95
100
TRANSIENT THERMAL IMPEDANCE, C/W
FIG. 7 - TYPICAL TRANSIENT THERMAL IMPEDANCE
RQJA
10
1
RQJC
0.1
0.01 0.01
0.1
1
PULSE WIDTH, sec.
10
100

▲Up To Search▲

Price & Availability of SM8A27

	To Download SM8A27 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .