TL431BW5-7 Equivalent & Substitute Parts

Part Overview

The TL431BW5-7 is a shunt voltage reference IC manufactured by Diodes Incorporated, designed for precision voltage regulation and reference applications. This adjustable reference device operates across a 2.495V to 36V output range with ±0.5% tolerance and supports 100 mA output current. The component is actively produced and widely used in power management circuits requiring stable voltage references. Substitute parts are identified to provide design flexibility when the primary part number is unavailable or when alternative packaging or supplier options are required.

Substiute Parts

TL431BW5-7

Diodes IncorporatedIn Stock: 5975TL431BW5-7 Datasheet

Current PartRFQ

TL431BFDT,215

Nexperia USA Inc.In Stock: 4138TL431BFDT,215 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TL431BW5-7 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Reference Type: Shunt
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 2.495V
• Voltage - Output (Max): 36V
• Current - Output: 100 mA
• Tolerance: ±0.5%
• Operating Temperature: -40°C ~ 125°C (TA)
• Mounting Type: Surface Mount
• Product Status: Active

Allowable Variations:

• Package / Case: Different surface mount packages (SOT-25, TO-236AB, SC-59, SOT-23-3) are acceptable provided pin configuration and electrical characteristics remain compatible
• Current - Cathode: Minor variations (600 µA to 700 µA) are acceptable within the shunt reference operating range
• Manufacturer: Alternative qualified manufacturers are acceptable
• Supplier Packaging: Cut Tape, Digi-Reel, or Tape & Reel formats are interchangeable

The TL431BFDT,215 meets all critical electrical parameters and is qualified as a direct substitute with alternative packaging and supplier options.

Parameter Comparison

Engineering Selection Recommendations

Both the TL431BW5-7 and TL431BFDT,215 are active products with ROHS3 compliance and identical core electrical specifications. Selection between these parts should be based on the following criteria:

TL431BW5-7 (Diodes Incorporated):

• Standard industrial-grade component
• SOT-25 package (SC-74A, SOT-753)
• Tape & Reel packaging format
• Suitable for general-purpose power management applications

TL431BFDT,215 (Nexperia USA Inc.):

• Automotive-grade component with AEC-Q100 qualification
• TO-236AB package (TO-236-3, SC-59, SOT-23-3)
• Cut Tape and Digi-Reel packaging options
• Recommended for automotive and high-reliability applications

The lower cathode current specification (600 µA vs. 700 µA) of the Nexperia part represents improved efficiency and does not impact substitution compatibility. Package differences require PCB layout verification to ensure pin compatibility and thermal performance.

Frequently Asked Questions (FAQ)

Q: Can TL431BFDT,215 directly replace TL431BW5-7 in existing designs?

A: Electrical substitution is valid. However, package differences (SOT-25 vs. TO-236AB) require PCB footprint verification. Pin configurations differ between these packages, necessitating layout review before implementation.

Q: What is the significance of the automotive grade designation on the Nexperia part?

A: The TL431BFDT,215 carries AEC-Q100 qualification, indicating compliance with automotive reliability standards. This qualification is not required for standard industrial applications but provides additional assurance for automotive and mission-critical designs.

Q: Are there differences in cathode current specifications between these parts?

A: The TL431BW5-7 specifies 700 µA cathode current, while the TL431BFDT,215 specifies 600 µA. Both values fall within acceptable operating ranges for shunt voltage reference applications. The lower specification of the Nexperia part indicates improved efficiency characteristics.

Q: What packaging formats are available for each part?

A: TL431BW5-7 is supplied in Tape & Reel format. TL431BFDT,215 is available in Cut Tape and Digi-Reel formats. These packaging options do not affect electrical performance and are selected based on assembly process requirements.

Q: Are both parts RoHS compliant?

A: Yes, both TL431BW5-7 and TL431BFDT,215 are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements for industrial and commercial applications.

Q: What is the base product number for these parts?

A: Both parts are based on the TL431 shunt voltage reference architecture, with manufacturing and packaging variations indicated by the full part number designations.