TLVH431BCLPR Equivalent & Substitute Parts

Part Overview

The TLVH431BCLPR is a shunt voltage reference IC manufactured by Texas Instruments, designed for adjustable voltage regulation applications. This through-hole component operates with a fixed output voltage of 1.24V and supports maximum output voltages up to 18V at 70mA output current, with ±0.5% tolerance. The device is classified as Last Time Buy, indicating end-of-life status. Identifying equivalent substitute parts is necessary due to product discontinuation and to ensure continued availability for new designs and production requirements.

Substiute Parts

TLVH431BCLPR

Texas InstrumentsIn Stock: 2956TLVH431BCLPR Datasheet

Current PartRFQ

TLV431BIDBZR

Texas InstrumentsIn Stock: 39225TLV431BIDBZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLVH431BCLPR is determined by the following core electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Reference Type: Shunt (must match)
• Output Type: Adjustable (must match)
• Voltage - Output (Min/Fixed): 1.24V (must match)
• Tolerance: ±0.5% (must match)
• Current - Cathode: 100µA (must match)

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole vs. Surface Mount (determines PCB integration method)
• Package / Case: TO-92-3 vs. SOT-23-3 (physical footprint difference)

Performance Considerations:

• Voltage - Output (Max): 18V (TLVH431BCLPR) vs. 6V (TLV431BIDBZR) — lower maximum voltage in substitute
• Current - Output: 70mA (TLVH431BCLPR) vs. 15mA (TLV431BIDBZR) — reduced output current capability
• Operating Temperature: 0°C ~ 70°C (TLVH431BCLPR) vs. -40°C ~ 85°C (TLV431BIDBZR) — extended temperature range in substitute

The TLV431BIDBZR shares the same base product family (TLV431) and maintains identical electrical core specifications (reference type, output type, minimum voltage, tolerance, cathode current). However, it differs in mounting technology (surface mount vs. through hole) and has reduced maximum voltage and output current ratings.

Parameter Comparison

Engineering Selection Recommendations

For Through-Hole Applications: The TLVH431BCLPR remains the specified component for existing through-hole PCB designs. No direct through-hole substitute with identical electrical and mechanical specifications is available from the provided data.

For New Designs or Surface-Mount Migration: The TLV431BIDBZR is the active product alternative from Texas Instruments within the TLV431 family. This substitute is suitable for applications where:

• Surface-mount technology is acceptable or preferred
• Maximum output voltage requirement does not exceed 6V
• Output current requirement does not exceed 15mA
• Extended operating temperature range (-40°C ~ 85°C) is beneficial or required

Both parts maintain ROHS3 compliance and are manufactured by Texas Instruments, ensuring consistent quality and long-term availability. The TLV431BIDBZR's active product status provides superior supply chain continuity compared to the Last Time Buy status of the TLVH431BCLPR.

Frequently Asked Questions (FAQ)

Q: Can TLV431BIDBZR directly replace TLVH431BCLPR in existing designs?

A: Direct replacement is not recommended without PCB redesign. The TLVH431BCLPR uses through-hole TO-92-3 packaging, while TLV431BIDBZR uses surface-mount SOT-23-3 packaging. Additionally, TLV431BIDBZR has reduced maximum voltage (6V vs. 18V) and output current (15mA vs. 70mA) ratings. Substitution is only valid if your circuit operates within these reduced specifications.

Q: What are the core electrical specifications that must match for substitution?

A: The following parameters must remain identical: Reference Type (Shunt), Output Type (Adjustable), Voltage - Output (Min/Fixed) at 1.24V, Tolerance (±0.5%), and Current - Cathode (100µA). Any deviation in these parameters indicates incompatibility.

Q: Why does TLV431BIDBZR have a wider operating temperature range?

A: The extended operating temperature range (-40°C ~ 85°C vs. 0°C ~ 70°C) is a characteristic of the TLV431BIDBZR design. This provides greater flexibility for applications requiring operation in extreme temperature environments.

Q: Are both parts RoHS compliant?

A: Yes, both TLVH431BCLPR and TLV431BIDBZR are ROHS3 compliant, meeting environmental and regulatory requirements for electronic components.

Q: What should I consider when evaluating substitution feasibility?

A: Evaluate your circuit's actual requirements for maximum output voltage and output current against the substitute's ratings. Confirm that your PCB design can accommodate surface-mount SOT-23-3 packaging if considering TLV431BIDBZR. Verify that the operating temperature range of the substitute meets your application requirements.