TLVH431ACLPR Equivalent & Substitute Parts

Part Overview

The TLVH431ACLPR is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation and reference applications in power management circuits. 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% tolerance. The device is packaged in TO-92-3 (through-hole) configuration and is currently in Last Time Buy status, making identification of suitable substitute parts essential for ongoing design support and procurement planning.

Substiute Parts

TLVH431ACLPR

Texas InstrumentsIn Stock: 2788TLVH431ACLPR Datasheet

Current PartRFQ

TLVH431ACDBZR

Texas InstrumentsIn Stock: 23522TLVH431ACDBZR Datasheet

MFR RecommendedRFQ

AZ431LBZTR-G1

Diodes IncorporatedIn Stock: 25192AZ431LBZTR-G1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLVH431ACLPR is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Reference Type: Shunt (must match)
• Output Type: Adjustable (must match)
• Voltage - Output (Min/Fixed): 1.24V (must match)
• Voltage - Output (Max): 18V (must match or exceed)
• Tolerance: ±1% (must match or be tighter)
• Current - Output: 70mA minimum (must meet or exceed)

Mechanical & Environmental Compatibility:

• Mounting Type: Through Hole (preferred for direct replacement)
• Package / Case: TO-92-3 compatible pinout
• RoHS Status: ROHS3 Compliant (must match)

The substitute parts identified below satisfy these core electrical and mechanical requirements, enabling functional equivalence in applications designed for the TLVH431ACLPR.

Parameter Comparison

Engineering Selection Recommendations

TLVH431ACDBZR (Texas Instruments): This part is the manufacturer-recommended substitute from Texas Instruments, maintaining identical electrical specifications (1.24V to 18V adjustable output, 70mA, ±1% tolerance). The primary difference is packaging: TLVH431ACDBZR uses SOT-23-3 surface-mount configuration versus the through-hole TO-92-3 of the original part. This substitute is suitable for new designs or PCB redesigns that accommodate surface-mount technology. Product status is Active with full availability (23,419 pcs in stock). RoHS3 compliance and REACH unaffected status are maintained.

AZ431LBZTR-G1 (Diodes Incorporated): This alternative from Diodes Incorporated provides electrical equivalence with enhanced specifications: identical 1.24V to 18V output range and ±1% tolerance, but with increased output current capability (100mA versus 70mA) and extended operating temperature range (-40°C to 125°C versus 0°C to 70°C). The TO-92-3 through-hole package matches the original mounting type, enabling direct PCB compatibility. Product status is Active with high availability (25,100 pcs in stock). RoHS3 compliance and REACH unaffected status are maintained. The lower cathode current (80µA versus 100µA) and temperature coefficient specification (20ppm/°C typical) provide additional design flexibility.

Frequently Asked Questions (FAQ)

Q: Can TLVH431ACDBZR directly replace TLVH431ACLPR on existing PCBs?

A: No. TLVH431ACDBZR uses SOT-23-3 surface-mount packaging while TLVH431ACLPR uses TO-92-3 through-hole packaging. Direct PCB replacement is not possible without redesign. However, electrical functionality is identical, making it suitable for new board layouts.

Q: Is AZ431LBZTR-G1 a pin-compatible replacement?

A: Yes. AZ431LBZTR-G1 uses TO-92-3 through-hole packaging identical to TLVH431ACLPR, enabling direct PCB replacement without layout modifications. Electrical specifications meet or exceed the original part requirements.

Q: What are the key electrical differences between these substitutes?

A: All three parts share identical core specifications: 1.24V to 18V adjustable output, ±1% tolerance, and shunt reference topology. AZ431LBZTR-G1 provides higher output current (100mA versus 70mA) and wider operating temperature range (-40°C to 125°C versus 0°C to 70°C). Cathode current differs slightly: TLVH431ACLPR and TLVH431ACDBZR at 100µA, AZ431LBZTR-G1 at 80µA.

Q: Why is TLVH431ACLPR in Last Time Buy status?

A: Last Time Buy status indicates the manufacturer is discontinuing this specific part number. Substitute parts with Active status (TLVH431ACDBZR and AZ431LBZTR-G1) provide continuity for ongoing production and future designs.

Q: Which substitute should I choose for a new design?

A: Selection depends on packaging requirements. For through-hole designs, AZ431LBZTR-G1 offers superior specifications (higher current, extended temperature range) with direct pin compatibility. For surface-mount designs, TLVH431ACDBZR is the manufacturer-recommended option from Texas Instruments.

Q: Are all three parts RoHS3 compliant?

A: Yes. TLVH431ACLPR, TLVH431ACDBZR, and AZ431LBZTR-G1 are all ROHS3 Compliant with REACH Unaffected status, meeting current environmental and regulatory requirements.