TLVH431BIDBVR Equivalent & Substitute Parts

Part Overview

The TLVH431BIDBVR is an adjustable shunt voltage reference IC manufactured by Texas Instruments, designed for precision voltage regulation applications in power management circuits. This Surface Mount device operates across a -40°C to 85°C temperature range and delivers 70 mA output current with ±0.5% tolerance. The part is Active status and ROHS3 compliant, making it suitable for modern electronic applications requiring stable reference voltages between 1.24V and 18V.

Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while accommodating different packaging, current ratings, or manufacturer sourcing requirements.

Key Parameters

Parameter	Value	Unit
Reference Type	Shunt	—
Output Type	Adjustable	—
Voltage - Output (Min/Fixed)	1.24	V
Voltage - Output (Max)	18	V
Current - Output	70	mA
Tolerance	±0.5%	—
Current - Cathode	100	µA
Operating Temperature	-40 to 85	°C
Mounting Type	Surface Mount	—
Package / Case	SC-74A, SOT-753	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the TLVH431BIDBVR is determined by the following critical parameters:

Reference Type & Output Type: Must remain Shunt and Adjustable
Voltage Range: Output voltage capability must span 1.24V to 18V minimum
Current - Output: Substitute must deliver sufficient current for the application; lower ratings require circuit redesign verification
Tolerance: Voltage accuracy specification; tighter tolerance (±0.5%) is preferred but wider tolerance (±1.5%) may be acceptable depending on application requirements
Operating Temperature: Must support the required thermal range; extended range (-40°C to 125°C) provides additional margin
Mounting Type & Package: Surface Mount with SC-74A/SOT-753 package compatibility ensures mechanical interchangeability
Compliance: RoHS3 and REACH status must be maintained for regulatory alignment

Two substitute parts are identified based on these criteria, each with distinct trade-offs in current capacity, tolerance, and temperature range.

Parameter Comparison

Parameter	TLVH431BIDBVR (Main)	TLV431BE5TA (Substitute)	TLVH431LIL5T (Substitute)
Manufacturer	Texas Instruments	Diodes Incorporated	STMicroelectronics
Reference Type	Shunt	Shunt	Shunt
Output Type	Adjustable	Adjustable	Adjustable
Voltage - Output (Min/Fixed)	1.24 V	1.24 V	1.24 V
Voltage - Output (Max)	18 V	18 V	18 V
Current - Output	70 mA	15 mA	60 mA
Tolerance	±0.5%	±0.5%	±1.5%
Current - Cathode	100 µA	100 µA	200 µA
Operating Temperature	-40 to 85°C	-40 to 125°C	-40 to 125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-74A, SOT-753	SC-74A, SOT-753	SC-74A, SOT-753
Supplier Device Package	SOT-23-5	SOT-25	SOT-23-5
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

TLV431BE5TA (Diodes Incorporated) is suitable for applications where output current requirements do not exceed 15 mA. This substitute maintains ±0.5% tolerance matching the main part and extends operating temperature to 125°C. The reduced current capacity necessitates circuit-level evaluation to confirm adequacy. RoHS3 compliance and unlimited MSL rating preserve regulatory and manufacturing requirements.

TLVH431LIL5T (STMicroelectronics) is recommended for applications requiring extended temperature operation (-40°C to 125°C) with output current between 15 mA and 70 mA. This part delivers 60 mA, approaching the main part's 70 mA specification. The tolerance widens to ±1.5%, which may require design margin verification in precision applications. Cathode current increases to 200 µA, affecting bias network design. RoHS3 compliance and unlimited MSL rating are maintained.

Both substitutes maintain Active product status and full regulatory compliance. Selection depends on specific current, tolerance, and temperature requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can TLV431BE5TA replace TLVH431BIDBVR in all applications?

A: TLV431BE5TA is electrically compatible for voltage reference and tolerance specifications but is limited to 15 mA output current versus the main part's 70 mA. Applications requiring higher current must use TLVH431LIL5T or the original part.

Q: What is the impact of ±1.5% tolerance in TLVH431LIL5T compared to ±0.5% in the main part?

A: The wider tolerance increases voltage reference accuracy variation by 3x. Applications with tight voltage regulation requirements should verify that circuit design margins accommodate this specification difference.

Q: Are the package dimensions identical across all three parts?

A: All three parts use SC-74A/SOT-753 package designation. However, TLV431BE5TA specifies SOT-25 supplier package while TLVH431BIDBVR and TLVH431LIL5T specify SOT-23-5. Physical footprint compatibility should be confirmed with component datasheets before PCB layout finalization.

Q: Does the extended temperature range of substitutes affect reliability?

A: Extended operating temperature (-40°C to 125°C) in both substitutes provides additional thermal margin compared to the main part's -40°C to 85°C range. This does not negatively impact reliability; it expands application scope.

Q: How does increased cathode current in TLVH431LIL5T affect circuit design?

A: TLVH431LIL5T cathode current is 200 µA versus 100 µA in the main part. Bias resistor networks must be recalculated to accommodate doubled cathode current draw, affecting power consumption and component selection in the reference circuit.

Q: Are all parts RoHS3 and REACH compliant?

A: Yes. All three parts carry ROHS3 Compliant status and REACH Unaffected designation, meeting current environmental and regulatory requirements.

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