Equivalent & Substitute Parts for ZPY4V3-TAP Zener Diode

Part Overview

The ZPY4V3-TAP is a 4.3 V, 1.3 W Zener diode manufactured by Vishay General Semiconductor - Diodes Division in DO-204AL (DO-41) axial through-hole package. This component is classified as an active product with automotive-grade qualification (AEC-Q101) and ROHS3 compliance. Substitute parts are identified based on matching electrical specifications and mechanical compatibility to ensure functional equivalence in circuit applications.

Substiute Parts

ZPY4V3-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 1076ZPY4V3-TAP Datasheet

Current PartRFQ

1N4731A-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 255341N4731A-TAP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ZPY4V3-TAP are identified based on the following critical parameters:

Electrical Equivalence Criteria:

• Zener voltage (Vz): 4.3 V nominal
• Tolerance: ±5%
• Maximum power dissipation: 1.3 W
• Package type: DO-204AL (DO-41) axial through-hole

Compliance & Grade Criteria:

• Automotive-grade classification
• AEC-Q101 qualification
• ROHS3 compliance
• Operating temperature: 175°C

The substitute part 1N4731A-TAP meets all electrical and mechanical requirements for direct substitution. Both parts share identical nominal Zener voltage, tolerance, maximum power rating, package configuration, and automotive qualification status. Differences in impedance (Zzt) and other secondary parameters do not preclude substitution when the primary electrical specifications are matched.

Parameter Comparison

Engineering Selection Recommendations

Both ZPY4V3-TAP and 1N4731A-TAP are active products with identical electrical specifications and automotive-grade qualification. Selection between these parts is based on packaging format and inventory availability:

ZPY4V3-TAP: Supplied in Tape & Box (TB) packaging. Current inventory: 970 pieces.

1N4731A-TAP: Supplied in Cut Tape (CT) packaging. Current inventory: 25,514 pieces.

Both parts satisfy AEC-Q101 automotive qualification and ROHS3 compliance requirements. The choice between them depends on procurement requirements, packaging preferences, and supply chain considerations rather than electrical performance differences.

Frequently Asked Questions (FAQ)

Q: Can 1N4731A-TAP replace ZPY4V3-TAP in existing designs?

A: Yes. Both parts have identical nominal Zener voltage (4.3 V), tolerance (±5%), maximum power rating (1.3 W), and package configuration (DO-204AL/DO-41 axial through-hole). Both are automotive-grade with AEC-Q101 qualification.

Q: What is the difference in impedance between these parts?

A: ZPY4V3-TAP has maximum impedance of 4 Ohms, while 1N4731A-TAP has maximum impedance of 9 Ohms. This difference does not affect substitution eligibility when the primary electrical specifications (Vz, tolerance, power) are matched.

Q: Are both parts suitable for automotive applications?

A: Yes. Both ZPY4V3-TAP and 1N4731A-TAP carry automotive-grade classification and AEC-Q101 qualification, meeting automotive industry standards.

Q: What is the difference between Tape & Box and Cut Tape packaging?

A: Tape & Box (TB) packaging includes a box for storage and handling. Cut Tape (CT) packaging provides individual tape segments. Both formats contain the same component in DO-204AL (DO-41) axial through-hole configuration.

Q: Are both parts RoHS compliant?

A: Yes. Both ZPY4V3-TAP and 1N4731A-TAP are ROHS3 compliant and REACH unaffected.

Q: What is the maximum operating temperature for these Zener diodes?

A: Both parts operate at a maximum junction temperature (TJ) of 175°C.