| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
1 pcs
|
1 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
| Category | |
| Manufacturer Name |
The LM399H from Texas Instruments is a high-precision, temperature-stabilized monolithic zener diode. It offers a superior temperature coefficient of 0.0001%/°C, a significant improvement over standard reference zeners.
Constructed on a single monolithic chip, the LM399H integrates a temperature stabilizer circuit and an active reference zener. This active circuitry reduces the dynamic impedance to approximately 0.5 Ω, allowing operation across a wide current range of 0.5 mA to 10 mA with minimal voltage or temperature coefficient change. The device utilizes a subsurface zener structure for low noise and excellent long-term stability.
The LM399H is packaged in a standard hermetic TO-46 metal can, supplied with a thermal shield to enhance temperature regulation and minimize heater power. It is rated for operation from -55°C to +125°C. Its ease of use, fast warm-up time, and minimal hysteresis make it suitable for demanding applications.
Ideal applications include analog-to-digital converters, calibration standards, precision voltage or current sources, and precision power supplies. The LM399H can often replace existing zener references with minimal wiring modifications, offering improved performance.
| Qty | Low | High |
|---|---|---|
| 1+ | $2.23 | $2.23 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The LM399H has a guaranteed temperature coefficient of 0.0001%/°C.
The LM399H has a typical dynamic impedance of 0.5 Ω.
The LM399H can operate over a current range of 0.5 mA to 10 mA.
The LM399H is rated for operation from -55°C to +125°C.
The LM399H is supplied in a hermetic TO-46 package.
The standard package quantity for the LM399H is 500 units.