TLVH431AILP Equivalent & Substitute Parts

Part Overview

The TLVH431AILP is a shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation applications. This adjustable reference provides a fixed output of 1.24V with a maximum output capability of 18V and 70mA current capacity, featuring ±1% tolerance for stable performance across industrial temperature ranges. The device is currently in Last Time Buy status, making identification of compatible alternatives essential for ongoing design support and procurement planning.

Substiute Parts

TLVH431AILP

Texas InstrumentsIn Stock: 3386TLVH431AILP Datasheet

Current PartRFQ

TLVH431ACDBZR

Texas InstrumentsIn Stock: 23522TLVH431ACDBZR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLVH431AILP is determined by electrical parameter equivalence across the following critical specifications:

• Reference Type: Shunt voltage reference architecture
• Output Voltage Range: 1.24V minimum to 18V maximum
• Output Current Capacity: 70mA
• Tolerance: ±1% accuracy
• Cathode Current: 100µA
• Base Product Number: TLVH431 (same device family)

The TLVH431ACDBZR qualifies as a manufacturer-recommended substitute based on identical electrical performance parameters. The primary distinction lies in packaging format: the substitute transitions from through-hole TO-92-3 to surface-mount SOT-23-3, requiring PCB layout modification but maintaining full functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The TLVH431ACDBZR is the manufacturer-recommended substitute for the TLVH431AILP, offering continued access to the TLVH431 shunt voltage reference architecture with identical electrical specifications. Both devices maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.

Selection between these parts depends on application constraints:

• TLVH431AILP: Appropriate for existing through-hole PCB designs where component replacement occurs without layout modification. Last Time Buy status indicates limited future availability.

• TLVH431ACDBZR: Suitable for new designs or PCB redesigns requiring surface-mount technology. Active product status ensures long-term availability and supply continuity. Operating temperature range of 0°C ~ 70°C is suitable for commercial and industrial applications within this specification window.

Temperature range difference (TLVH431AILP: -40°C ~ 85°C vs. TLVH431ACDBZR: 0°C ~ 70°C) requires verification against application requirements. Applications requiring operation below 0°C or above 70°C must retain the TLVH431AILP or identify alternative solutions.

Frequently Asked Questions (FAQ)

Q: Can TLVH431ACDBZR directly replace TLVH431AILP in existing designs?

A: Electrical substitution is complete. Physical substitution requires PCB modification due to package format change from TO-92-3 (through-hole) to SOT-23-3 (surface-mount). Footprint redesign is necessary.

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

A: No electrical differences exist. Both devices provide identical shunt voltage reference performance: 1.24V adjustable output, 18V maximum, 70mA capacity, and ±1% tolerance.

Q: Does operating temperature range affect substitution suitability?

A: Operating temperature ranges differ. TLVH431AILP operates -40°C ~ 85°C; TLVH431ACDBZR operates 0°C ~ 70°C. Verify application temperature requirements before substitution. Applications requiring extended low-temperature operation below 0°C cannot use the substitute.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both TLVH431AILP and TLVH431ACDBZR are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory standards.

Q: Why is TLVH431AILP marked Last Time Buy?

A: Last Time Buy status indicates the manufacturer is discontinuing this specific package variant. TLVH431ACDBZR (surface-mount version) remains in active production, providing a path for continued access to equivalent functionality.

Q: What packaging considerations apply to substitution?

A: TLVH431AILP uses TO-92-3 through-hole packaging for breadboard and traditional PCB assembly. TLVH431ACDBZR uses SOT-23-3 surface-mount packaging for automated assembly and compact designs. Soldering methods, PCB footprints, and assembly processes differ accordingly.