TLVH431CLP Equivalent & Substitute Parts

Part Overview

The TLVH431CLP 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 in Last Time Buy status, indicating end-of-life production. Finding equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for new production runs and long-term support.

Substiute Parts

TLVH431CLP

Texas InstrumentsIn Stock: 2930TLVH431CLP Datasheet

Current PartRFQ

TLVH431BCDBZR

Texas InstrumentsIn Stock: 29167TLVH431BCDBZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLVH431CLP is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Reference type must be Shunt
• Output type must be Adjustable
• Voltage output range: minimum 1.24V, maximum 18V
• Current output: 70mA
• Current cathode: 100µA
• Operating temperature range: 0°C ~ 70°C

Mechanical Compatibility Criteria:

• Base product number: TLVH431 (same device family)
• Manufacturer: Texas Instruments
• RoHS3 compliance required

The TLVH431BCDBZR qualifies as a manufacturer-recommended substitute because it maintains identical electrical specifications while offering improved tolerance (±0.5% versus ±1.5%) and active product status. The primary difference is packaging format: SOT-23-3 (surface mount) versus TO-92-3 (through-hole), which requires circuit board redesign consideration.

Parameter Comparison

Engineering Selection Recommendations

The TLVH431BCDBZR is the manufacturer-recommended substitute for the TLVH431CLP. Selection between these parts depends on design constraints:

Choose TLVH431CLP when:

• Existing through-hole PCB layout cannot be modified
• Current inventory stock is available and cost-effective
• Design timeline does not permit board redesign

Choose TLVH431BCDBZR when:

• New designs or PCB revisions are planned
• Surface-mount assembly capability is available
• Long-term supply chain continuity is required (active product status)
• Improved tolerance specification (±0.5%) provides design margin benefits
• Higher inventory availability (29,100 pcs) ensures supply security

Both devices maintain ROHS3 compliance and identical electrical performance within their respective tolerance specifications. The TLVH431BCDBZR offers superior tolerance accuracy and active manufacturing status, making it the preferred choice for new production designs.

Frequently Asked Questions (FAQ)

Q: Can TLVH431BCDBZR directly replace TLVH431CLP without circuit modification?

A: Electrical substitution is direct; mechanical substitution requires PCB redesign. The TLVH431BCDBZR uses SOT-23-3 surface-mount packaging versus the TO-92-3 through-hole package of the TLVH431CLP. Pin-to-pin electrical function is identical, but board layout and assembly process must be updated.

Q: What is the tolerance difference between these parts?

A: TLVH431CLP specifies ±1.5% output voltage tolerance, while TLVH431BCDBZR specifies ±0.5%. The substitute provides tighter tolerance, which may improve circuit performance in precision applications.

Q: Are both parts RoHS compliant?

A: Yes, both TLVH431CLP and TLVH431BCDBZR are ROHS3 compliant and REACH unaffected.

Q: Why is TLVH431CLP marked as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued this product line in TO-92-3 packaging. The TLVH431BCDBZR represents the active production alternative in the same device family.

Q: What are the key electrical parameters that must match for substitution?

A: Reference type (Shunt), output type (Adjustable), voltage range (1.24V to 18V), output current (70mA), cathode current (100µA), and operating temperature range (0°C to 70°C) must all match exactly.

Q: Is the improved tolerance of TLVH431BCDBZR always beneficial?

A: Improved tolerance provides tighter voltage regulation, which benefits precision applications. However, circuit design must accommodate the packaging change from through-hole to surface-mount assembly.