TLVH431BCLP Equivalent & Substitute Parts

Part Overview

The TLVH431BCLP 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 output voltage of 18V, delivering up to 70mA output current with ±0.5% tolerance. The component 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

TLVH431BCLP

Texas InstrumentsIn Stock: 1031TLVH431BCLP Datasheet

Current PartRFQ

TLVH431BCDBZR

Texas InstrumentsIn Stock: 29167TLVH431BCDBZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLVH431BCLP is determined by electrical parameter equivalence across the shunt voltage reference category. The following parameters must remain identical or within acceptable tolerance for functional interchangeability:

• Reference Type: Shunt (fixed requirement)
• Output Type: Adjustable (fixed requirement)
• Voltage - Output (Min/Fixed): 1.24V (fixed requirement)
• Voltage - Output (Max): 18V (fixed requirement)
• Current - Output: 70mA (fixed requirement)
• Tolerance: ±0.5% (fixed requirement)
• Current - Cathode: 100µA (fixed requirement)
• Operating Temperature: 0°C ~ 70°C (fixed requirement)

The TLVH431BCDBZR qualifies as a direct electrical substitute, sharing identical electrical specifications. The primary difference is packaging format: the main part uses through-hole TO-92-3 mounting, while the substitute uses surface-mount SOT-23-3 packaging. This distinction affects PCB layout and assembly methodology but does not alter electrical performance or functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The TLVH431BCDBZR is the recommended substitute for the TLVH431BCLP based on the following criteria:

Electrical equivalence is complete across all specified parameters. Both devices are manufactured by Texas Instruments under the same base product number (TLVH431) and maintain identical electrical performance characteristics.

Product status favors the TLVH431BCDBZR. The main part is classified as Last Time Buy, indicating discontinued production and limited remaining inventory (935 pcs). The substitute maintains Active status with significantly higher inventory availability (29,100 pcs), ensuring long-term supply chain continuity.

Compliance and certification are equivalent. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

The primary consideration for selection is packaging format. Through-hole TO-92-3 mounting requires PCB design with through-hole pads and manual or wave soldering assembly. Surface-mount SOT-23-3 packaging requires SMD-compatible PCB layout and reflow soldering processes. Design and manufacturing capability must align with the selected package type.

Frequently Asked Questions (FAQ)

Q: Can TLVH431BCDBZR directly replace TLVH431BCLP in existing designs?

A: Electrical substitution is direct and complete. All voltage, current, tolerance, and temperature specifications are identical. PCB layout and assembly process must be adapted to accommodate the different package format (through-hole versus surface-mount).

Q: What is the difference between TO-92-3 and SOT-23-3 packaging?

A: TO-92-3 is a through-hole package with three leads inserted into PCB holes and soldered on the reverse side. SOT-23-3 is a surface-mount package with three leads soldered directly to PCB pads on the component side. SOT-23-3 occupies significantly less PCB area and is compatible with automated assembly processes.

Q: Are there any electrical performance differences between the two parts?

A: No. Both devices share identical electrical specifications: 1.24V minimum output, 18V maximum output, 70mA output current, ±0.5% tolerance, 100µA cathode current, and 0°C to 70°C operating temperature range.

Q: Why is the TLVH431BCLP classified as Last Time Buy?

A: Last Time Buy status indicates Texas Instruments has discontinued production of this part number. Existing inventory is limited to 935 units. The TLVH431BCDBZR represents the active product line continuation with equivalent electrical performance in a modern surface-mount package format.

Q: What compliance certifications apply to both parts?

A: Both TLVH431BCLP and TLVH431BCDBZR are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and distribution.

Q: Can I use TLVH431BCDBZR in a design originally specified for through-hole components?

A: Electrical substitution is valid. However, PCB redesign is required to accommodate surface-mount pads instead of through-hole pads. Assembly process must transition from through-hole or wave soldering to reflow soldering compatible with SMD components.