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Product Detailed Parameters
- Description：IC VREF SHUNT 0.2% SOT23-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Fixed
- Voltage - Output (Min/Fixed)：1.225V
- Voltage - Output (Max)：-
- Current - Output：12 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The LM4041BELT-1.2 is a micropower shunt voltage reference manufactured by STMicroelectronics, providing a fixed 1.225 V output. It features an initial accuracy of ±0.2% at 25 °C and a maximum temperature coefficient of 100 ppm/°C. The device operates with a low current of 40 μA at 25 °C and supports a cathode current up to 50 μA. It is housed in a SOT23-3L surface mount package and functions within an industrial temperature range of -40 °C to +85 °C.
Feature Summary
- Provides stable 1.225 V reference output with high precision
- Ultra-low operating current suitable for power-restricted designs
- Stable operation with capacitive loads without external compensation
Applications
- Space-saving portable electronic circuits
- Battery-powered measurement systems
- Industrial sensor signal conditioning
Procurement Notes
Verify the specific grade suffix (B) corresponds to the required ±0.2% accuracy tolerance for your design. Confirm the SOT23-3L package dimensions match your PCB footprint constraints. Ensure the industrial temperature rating (-40 °C to +85 °C) meets your operational environment requirements before finalizing procurement.
Selection Notes
Select this component when a fixed 1.225 V reference is needed with tighter accuracy than standard 1% variants but lower cost than 0.1% grades. It is suitable for applications requiring stability under capacitive loads. Compare against LM4041AILT-1.2 if higher precision is required, or LM4041DELT-1.2 if wider temperature ranges are necessary.
Part Context
This part belongs to the LM4041 family of precision micropower shunt voltage references. The family includes adjustable versions and various fixed voltage options. The BELT variant specifically denotes the B-grade accuracy and SOT23-3L packaging from STMicroelectronics, offering a balance between precision and power consumption.
Replacement Considerations
LM4041DELT-1.2 offers similar functionality with different accuracy. LM4041AILT-1.2 provides higher precision. Texas Instruments equivalents include LM4041DEM3X-1.2/NOPB.
