ZR431F01-7 Equivalent & Substitute Parts

Part Overview

The ZR431F01-7 is a shunt voltage reference IC manufactured by Diodes Incorporated, designed for precision voltage regulation applications. This adjustable reference provides a fixed output of 2.5V with a maximum rating of 20V and supports 100 mA output current. The component is classified as obsolete, making identification of suitable substitutes essential for ongoing design support and production continuity. Active alternatives with equivalent or superior electrical characteristics are available to maintain system functionality.

Substiute Parts

ZR431F01-7

Diodes IncorporatedIn Stock: 4886ZR431F01-7 Datasheet

Current PartRFQ

ZR431F01TA

Diodes IncorporatedIn Stock: 35473ZR431F01TA Datasheet

DirectRFQ

TL431AMFDT,215

NXP SemiconductorsIn Stock: 4125TL431AMFDT,215 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ZR431F01-7 is determined by the following critical parameters:

Primary Substitution Criteria:

• Reference Type: Shunt (must match)
• Output Type: Adjustable (must match)
• Voltage - Output (Min/Fixed): 2.5V or compatible (must support minimum 2.5V)
• Current - Output: 100 mA (must support minimum 100 mA)
• Tolerance: ±1% (must match or exceed precision)
• Package / Case: TO-236-3, SC-59, SOT-23-3 (must be pin-compatible)
• Mounting Type: Surface Mount (must match)

Direct Substitute: ZR431F01TA meets all primary criteria with identical electrical specifications and active product status.

Similar Substitute: TL431AMFDT,215 provides functional equivalence with enhanced voltage rating (36V maximum) and extended operating temperature range (-40°C ~ 125°C), though cathode current differs (600 µA vs. 50 µA).

Parameter Comparison

Engineering Selection Recommendations

ZR431F01TA (Direct Substitute - Recommended for Drop-In Replacement)

The ZR431F01TA is the primary substitute for the obsolete ZR431F01-7. Both components are manufactured by Diodes Incorporated and share identical electrical specifications, including voltage output range (2.5V to 20V), current capacity (100 mA), tolerance (±1%), temperature coefficient (55 ppm/°C), and cathode current (50 µA). The ZR431F01TA maintains the same operating temperature range (-40°C ~ 85°C) and package configuration (SOT-23-3). As an active product with ROHS3 compliance and REACH Unaffected status, the ZR431F01TA provides direct functional equivalence with assured long-term availability.

TL431AMFDT,215 (Similar Substitute - For Enhanced Performance Applications)

The TL431AMFDT,215 from NXP Semiconductors provides functional substitution with extended electrical capabilities. This component maintains the core shunt reference architecture with identical output current (100 mA) and tolerance (±1%), but offers an increased maximum voltage rating (36V vs. 20V) and extended operating temperature range (-40°C ~ 125°C). The minimum output voltage (2.495V) is compatible with the 2.5V specification. The primary design consideration is the elevated cathode current (600 µA vs. 50 µA), which may affect bias network design in applications with tight current budgets. The TL431AMFDT,215 is suitable for designs requiring higher voltage headroom or extended temperature operation.

Frequently Asked Questions (FAQ)

Q: Can ZR431F01TA be used as a direct replacement for ZR431F01-7?

A: Yes. The ZR431F01TA is a direct substitute with identical electrical specifications and package configuration. No circuit modifications are required for drop-in replacement.

Q: What are the key differences between ZR431F01TA and TL431AMFDT,215?

A: Both components function as adjustable shunt voltage references with 100 mA output current and ±1% tolerance. The TL431AMFDT,215 offers higher maximum voltage rating (36V vs. 20V) and extended operating temperature (-40°C ~ 125°C vs. -40°C ~ 85°C). The TL431AMFDT,215 has higher cathode current (600 µA vs. 50 µA), which may require bias network adjustment in current-sensitive applications.

Q: Are all substitute parts available in the same package?

A: Yes. All listed substitutes use the TO-236-3/SC-59/SOT-23-3 surface mount package, ensuring mechanical and electrical pin compatibility.

Q: What compliance certifications apply to these substitutes?

A: ZR431F01TA maintains ROHS3 compliance and REACH Unaffected status identical to the original part. TL431AMFDT,215 is REACH Unaffected. Both components carry EAR99 ECCN classification.

Q: Which substitute should be selected for new designs?

A: For applications within the original voltage and temperature specifications, ZR431F01TA is recommended due to identical performance characteristics and Diodes Incorporated sourcing continuity. For applications requiring higher voltage ratings or extended temperature operation, TL431AMFDT,215 provides enhanced capability.

Q: Does the higher cathode current of TL431AMFDT,215 affect circuit design?

A: The 600 µA cathode current of TL431AMFDT,215 versus 50 µA for ZR431F01TA may require adjustment to bias resistor values in applications with strict current budget constraints. Circuit simulation or testing is recommended when substituting in current-sensitive designs.