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HomeProductsIntegrated Circuits (ICs)PMIC - Voltage ReferenceLM431SAIMFX
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LM431SAIMFX - Fairchild Semiconductor

Manufacturer Part Number
LM431SAIMFX
Manufacturer
Fairchild (onsemi)
Allelco Part Number
32D-LM431SAIMFX
Warranty
1 Year Allelco Warranty - Find out more
Parts Description
ADJUSTABLE/2.5 V, 2% TOLERANCE S
Package
SOT-23F-3
Data sheet
-
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Our certification
In stock: 446400
  • Unit Price: $0.459
  • Subtotal: $0.00

Want a better price?
Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $0.459 $0.46
10+ $0.383 $3.83
30+ $0.346 $10.38
100+ $0.307 $30.70
500+ $0.272 $136.00
1000+ $0.26 $260.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.
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Specifications

LM431SAIMFX Tech Specifications
Fairchild Semiconductor - LM431SAIMFX technical specifications, attributes, parameters and parts with similar specifications to Fairchild Semiconductor - LM431SAIMFX

Product Attribute Attribute Value  
Manufacturer Fairchild (onsemi)  
Voltage - Output (Min/Fixed) 2.5V  
Voltage - Output (Max) 36 V  
Voltage - Input -  
Tolerance ±2%  
Temperature Coefficient 50ppm/°C Typical  
Supplier Device Package SOT-23F-3  
Series -  
Reference Type Shunt  
Package / Case SOT-23-3 Flat Leads  
Product Attribute Attribute Value  
Package Bulk  
Output Type Adjustable  
Operating Temperature -40°C ~ 85°C (TA)  
Noise - 10Hz to 10kHz -  
Noise - 0.1Hz to 10Hz -  
Mounting Type Surface Mount  
Current - Supply -  
Current - Output 100 mA  
Current - Cathode 1 mA  
Base Product Number LM431  

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

Manufacturer Part Number

LM431SAIMFX

Manufacturer

onsemi

Introduction

The LM431SAIMFX is a precision programmable shunt voltage reference IC from onsemi. It offers an adjustable output voltage range from 2.5V to 36V, making it suitable for a wide variety of applications that require a stable and accurate voltage reference.

Product Features and Performance

Adjustable output voltage range: 2.5V to 36V

Low output voltage tolerance: ±2%

Low temperature coefficient: 50ppm/°C typical

Capable of delivering up to 100mA of output current

Wide operating temperature range: -40°C to 85°C

Product Advantages

Flexible output voltage adjustment

Precise voltage regulation

Robust thermal performance

Efficient power delivery

Key Reasons to Choose This Product

Versatile voltage reference solution for diverse applications

Reliable and stable performance

Cost-effective design for budget-conscious projects

Compact surface-mount package for space-constrained designs

Quality and Safety Features

Meets industry-standard quality and reliability requirements

Robust overcurrent and overvoltage protection mechanisms

Designed and manufactured to onsemi's high-quality standards

Compatibility

The LM431SAIMFX is compatible with a wide range of electronic systems and circuits that require a precise and adjustable voltage reference, including:

Analog and mixed-signal circuits

Power supply designs

Industrial control systems

Automotive electronics

Consumer electronics

Application Areas

Voltage regulation in power supplies

Reference voltage for analog-to-digital converters (ADCs)

Precision voltage reference for op-amp circuits

Biasing and reference circuits in general electronics

Product Lifecycle

The LM431SAIMFX is an active and in-production product. There are no known plans for discontinuation at this time. However, customers are advised to check with our website's sales team for the latest product information and availability.

Parts with Similar Specifications

The three parts on the right have similar specifications to Fairchild Semiconductor LM431SAIMFX

Product Attribute LM431SAIMFX LM431SACMFX LM431SBIMFX LM431SACMFX_G
Part Number LM431SAIMFX LM431SACMFX LM431SBIMFX LM431SACMFX_G
Manufacturer onsemi onsemi onsemi onsemi
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Base Product Number - DAC34H84 MAX500 ADS62P42
Temperature Coefficient - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Voltage - Output (Max) - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Current - Output - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Noise - 10Hz to 10kHz - - - -
Current - Cathode - - - -
Reference Type - External, Internal External External, Internal
Voltage - Input - - - -
Current - Supply - - - -
Noise - 0.1Hz to 10Hz - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Series - - - -
Tolerance - - - -
Voltage - Output (Min/Fixed) - - - -

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Customer Reviews

Evaluation: 10 Articles

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

  • Kevi***.
    Mar 17, 2026

    Fast switching and stable output. Very satisfied with this IC

  • Daou***hekebkeb
    Jun 16, 2024

    I had a great experience purchasing items from Allelcoelec, I recommend

  • Uri ***al
    Jun 19, 2024

    Good comunication,
    Transpnt regarding the process and price.

  • Yaqu***l Ali
    Jun 19, 2024

    Providing reasonable prices, regular follow-up of orders, providing accurate and regular invoices, timely delivery of goods, excellent customer service and providing original goods and best quality materials.

  • Lea ***
    Jun 19, 2024

    Morrey was very helpful and right on top of things!
    He replied quickly to my RFQ. He was very courteous and professional.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.

Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.

Your Faithful Supply Chain Partner -

Contact us if you have any questions.

  1. Phone
    +00852 9146 4856

Certifications & Memberships

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LM431SAIMFX Image

LM431SAIMFX

Fairchild Semiconductor
32D-LM431SAIMFX

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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