TLVH431CLPR Equivalent & Substitute Parts

Part Overview

The TLVH431CLPR is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation applications. This adjustable reference device operates with a minimum output voltage of 1.24V and maximum of 18V, delivering up to 70mA output current with ±1.5% tolerance. The device is packaged in TO-92-3 (through-hole) configuration and is currently classified as Last Time Buy, indicating end-of-life status. Identifying equivalent substitute parts is essential for design continuity and long-term supply chain reliability.

Substiute Parts

TLVH431CLPR

Texas InstrumentsIn Stock: 1653TLVH431CLPR Datasheet

Current PartRFQ

TLVH431BCDBZR

Texas InstrumentsIn Stock: 29167TLVH431BCDBZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLVH431CLPR is determined by the following critical parameters:

• Reference Type: Shunt (must match)
• Output Type: Adjustable (must match)
• Voltage - Output (Min/Fixed): 1.24V (must match)
• Voltage - Output (Max): 18V (must match)
• Current - Output: 70mA (must match)
• Current - Cathode: 100µA (must match)
• Operating Temperature: 0°C ~ 70°C (TA) (must match)
• Base Product Number: TLVH431 (same device family)
• RoHS Status: ROHS3 Compliant (must match)

The TLVH431BCDBZR qualifies as a direct substitute based on matching all critical electrical parameters. The primary difference is packaging format: the substitute uses surface-mount SOT-23-3 instead of through-hole TO-92-3, and features improved tolerance (±0.5% versus ±1.5%). Both devices share the same base product number (TLVH431) and maintain identical voltage and current specifications.

Parameter Comparison

Engineering Selection Recommendations

The TLVH431BCDBZR is the manufacturer-recommended substitute for the TLVH431CLPR. Selection between these devices should be based on the following factors:

Product Status: The TLVH431CLPR is designated Last Time Buy, indicating discontinued production. The TLVH431BCDBZR maintains Active status with 29,100 units in stock, ensuring long-term availability and supply chain continuity.

Compliance: Both devices are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements. Both carry EAR99 ECCN classification.

Electrical Equivalence: All critical electrical parameters are identical. The TLVH431BCDBZR offers superior tolerance (±0.5% versus ±1.5%), providing tighter voltage regulation performance without compromising compatibility.

Packaging Consideration: The primary design change involves transitioning from through-hole (TO-92-3) to surface-mount (SOT-23-3) packaging. This requires PCB layout modification and assembly process adjustment but presents no electrical incompatibility.

Frequently Asked Questions (FAQ)

Q: Can the TLVH431BCDBZR directly replace the TLVH431CLPR in existing designs?

A: Electrically, yes. All voltage, current, and temperature specifications are identical. However, the packaging differs: TLVH431CLPR uses through-hole TO-92-3, while TLVH431BCDBZR uses surface-mount SOT-23-3. PCB redesign and assembly process modification are required.

Q: What are the key differences between these two parts?

A: The primary differences are packaging format (through-hole versus surface-mount), tolerance specification (±1.5% versus ±0.5%), product status (Last Time Buy versus Active), and inventory availability. Electrical performance and operating parameters remain identical.

Q: Why is the TLVH431BCDBZR recommended as a substitute?

A: The TLVH431CLPR is end-of-life (Last Time Buy status). The TLVH431BCDBZR is the active equivalent from the same manufacturer, sharing identical electrical specifications while offering improved tolerance and guaranteed long-term supply availability.

Q: Are there any compatibility concerns with the tolerance difference?

A: The TLVH431BCDBZR features tighter tolerance (±0.5% versus ±1.5%), which improves voltage regulation accuracy. This represents an enhancement rather than a limitation and poses no compatibility risk for applications designed around the original ±1.5% specification.

Q: What packaging considerations apply to this substitution?

A: The TLVH431CLPR is a through-hole component suitable for breadboard and traditional PCB assembly. The TLVH431BCDBZR is a surface-mount component requiring SMD assembly equipment and modified PCB footprints. Pin configuration and electrical function remain equivalent.

Q: Are both parts RoHS compliant?

A: Yes, both TLVH431CLPR and TLVH431BCDBZR are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards.