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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ SOT89-3
- Series：-
- Mfr：Nisshinbo Micro Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：36 V
- Current - Output：100 mA
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89-3
- Grade：-
- Qualification：-
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Overview
The NJM431SU-TE1 is an adjustable precision shunt regulator manufactured by Nisshinbo Micro Devices Inc. It utilizes bipolar technology and operates within a cathode voltage range of VREF to 36V. The device features a reference voltage of 2.495V with an initial accuracy of ±1.8%. It supports a continuous cathode current from 0.7mA to 100mA and functions across an operating temperature range of -40°C to +125°C. The component is housed in a SOT-89-3 surface-mount package.
Feature Summary
- Adjustable output voltage capability between the reference voltage and 36V using external resistors
- Improved voltage accuracy compared to conventional 431 series regulators
- Compact SOT-89-3 package design for space-constrained applications
Applications
- Photocoupler drivers
- Constant current sources
- General purpose voltage references
Procurement Notes
Verify the specific ordering suffix TE1 corresponds to the required reel packaging configuration before procurement. Confirm that the SOT-89-3 thermal dissipation requirements align with the target PCB layout, as power handling depends on copper area and layer count. Ensure the application does not require aerospace or life-safety certifications, as these are excluded from standard warranty coverage.
Selection Notes
Select this component when a compact adjustable shunt regulator is needed with improved accuracy over legacy versions. The SOT-89-3 package is suitable for surface mount assembly. Consider the maximum cathode voltage limit of 36V and the minimum operating current requirement of 0.7mA during circuit design to ensure stable operation within the specified temperature range.
Part Context
This part belongs to the NJM431S/NJM432S family of adjustable precision shunt regulators. The NJM431S variant uses a specific pin assignment, while the NJM432S offers an alternative pinout option. Both share similar electrical characteristics but differ in physical connectivity to accommodate various board layout strategies.
Replacement Considerations
NJM431D is listed as a similar replacement option, though it utilizes an 8-DIP through-hole package rather than the SOT-89-3 surface mount form factor.
