Features: • Working Peak Reverse Voltage Range − 5.0 V to 170 V
• Standard Zener Breakdown Voltage Range − 6.7 V to 199 V
• Peak Power − 600 W @ 1.0 ms
• ESD Rating of Class 3 (>16 kV) per Human Body Model
• Maximum Clamp Voltage @ Peak Pulse Current
• Low Leakage < 5.0 A Above 10 V
• UL 497B for Isolated Loop Circuit Protection
• Response Time is Typically < 1.0 ns
• Pb−Free Packages are AvailableSpecifications
| Rating |
Symbol |
Value |
Unit |
| Peak Power Dissipation (Note 1) @ TL = 25°C, Pulse Width = 1 ms |
PPK |
600 |
W |
DC Power Dissipation @ TL = 75°C
Measured Zero Lead Length (Note 2)
Derate Above 75°C
Thermal Resistance from Junction−to−Lead |
PD
RJL |
3.0
40
25 |
W
mW/°C
°C/W |
DC Power Dissipation (Note 3) @ TA = 25°C
Derate Above 25°C
Thermal Resistance from Junction−to−Ambient |
PD
RJA |
0.55
4.4
226 |
W
mW/°C
°C/W |
| Forward Surge Current (Note 4) @ TA = 25°C |
IFSM |
100 |
A |
| Operating and Storage Temperature Range |
TJ, Tstg |
−65 to +150 |
|
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
1. 10 X 1000 s, non−repetitive.
2. 1 in square copper pad, FR−4 board.
3. FR−4 board, using ON Semiconductor minimum recommended footprint, as shown in 403A case outline dimensions spec.
4. 1/2 sine wave (or equivalent square wave), PW = 8.3 ms, duty cycle = 4 pulses per minute maximum.
DescriptionThe SMB series is designed to protect voltage sensitive components from high voltage, high energy transients. They have excellent clamping capability, high surge capability, low zener impedance and fast response time. The SMB series is supplied in ON Semiconductor's exclusive, cost-effective, highly reliable Surmetic package and is ideally suited for use in communication systems, automotive, numerical controls, process controls, medical equipment, business machines, power supplies and many other industrial/consumer applications.
1SMBxxxAT3G Data Sheet
