| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
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985 pcs
|
985 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| AEC Qualified | |
| Automotive Grade | |
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| Impedance (Max) (Zzt) | |
| Mounting Type | |
| Operating Temperature | |
| Power | |
| Storage Temperature | |
| Supplier Device Package | |
| Tape & Reel | |
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| Voltage |
The 1SMB5940BT3 is a 3W surface mount Zener diode from ON Semiconductor, part of the 1SMB59xxBT3 series. It features a nominal Zener voltage of 43V with ±5% tolerance, maximum impedance of 53Ω at test current, and reverse leakage current of 1µA at 32.7V. The forward voltage is 1.5V maximum at 200mA.
Power dissipation is rated at 3W when the lead temperature is held at 75°C (zero lead length), derating at 40mW/°C above 75°C. At an ambient temperature of 25°C on an FR-4 board, dissipation is 550mW with a derating factor of 4.4mW/°C. Thermal resistance from junction to lead is 25°C/W typical, and junction to ambient is 226°C/W typical.
The device is housed in a DO-214AA (SMB) plastic package designed for surface mounting with solderable modified L-bend leads. It is rated for operating and storage temperatures from -65°C to 150°C. The diode has an ESD rating of Class 3 (>16kV) per the Human Body Model and a flammability rating of UL 94 V-0.
| Qty | Low | High |
|---|---|---|
| 2,500+ | $0.26 | $0.26 |
| 5,000+ | $0.24 | $0.24 |
| 7,500+ | $0.23 | $0.23 |
| 12,500+ | $0.22 | $0.22 |
| 17,500+ | $0.21 | $0.21 |
| 25,000+ | $0.21 | $0.21 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The nominal Zener voltage is 43V with a tolerance of ±5%.
The maximum forward voltage is 1.5V at a forward current of 200mA.
It is available in a DO-214AA (SMB) surface mount package.
Maximum power dissipation is 3W at a lead temperature of 75°C (zero lead length) and 550mW at an ambient temperature of 25°C on an FR-4 board.
Maximum reverse leakage current is 1µA at a reverse voltage of 32.7V.
The operating and storage temperature range is -65°C to 150°C.
The ESD rating is Class 3, greater than 16kV per the Human Body Model.