ZPY7V5-TAP Equivalent & Substitute Parts

Part Overview

The ZPY7V5-TAP is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated at 7.5 V nominal voltage with 1.3 W maximum power dissipation. This through-hole component is packaged in DO-204AL (DO-41) axial configuration and is qualified to AEC-Q101 automotive standards. The part is currently active in production with 956 pieces in stock. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility to support component sourcing flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	7.5	V
Tolerance	±5%	-
Power - Max	1.3	W
Impedance (Max)	1	Ohms
Current - Reverse Leakage @ Vr	500	nA @ 5 V
Operating Temperature	175	°C
Mounting Type	Through Hole	-
Package / Case	DO-204AL, DO-41, Axial	-
Grade	Automotive	-
Qualification	AEC-Q101	-

Substitute Part Grouping Explanation

Substitution of the ZPY7V5-TAP is determined by the following critical parameters: nominal Zener voltage of 7.5 V, voltage tolerance of ±5%, through-hole mounting configuration, and DO-204AL (DO-41) axial package compatibility. All identified substitute parts match these core electrical and mechanical specifications. Power rating variations are noted where they exceed the minimum 1.3 W requirement of the main part, indicating enhanced capability for higher dissipation applications. Impedance and reverse leakage characteristics are provided for detailed circuit analysis but do not restrict substitution eligibility when primary parameters align.

Parameter Comparison

Parameter	ZPY7V5-TAP (Vishay)	1N4737A (Lumimax)	1N4737A-T50A (Fairchild)	1N4737ATR (Fairchild)	2EZ7.5D5 (Microchip)
Voltage - Zener (Nom)	7.5 V	7.5 V	7.5 V	7.5 V	7.5 V
Tolerance	±5%	±5%	±5%	±5%	±5%
Power - Max	1.3 W	1 W	1 W	1 W	2 W
Impedance (Max)	1 Ohms	4 Ohms	4 Ohms	4 Ohms	2 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 5 V	10 µA @ 5 V	10 µA @ 5 V	10 µA @ 5 V	5 µA @ 5 V
Operating Temperature	175°C	-65°C ~ 200°C	-65°C ~ 200°C	-65°C ~ 200°C	-65°C ~ 150°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts are active products with confirmed availability. The 1N4737A variants (Lumimax, Fairchild 1N4737A-T50A, and Fairchild 1N4737ATR) provide direct electrical equivalence at 7.5 V, 1 W rating with identical voltage tolerance. These parts are suitable for applications where the 1.3 W rating of the main part is not a limiting constraint. The 2EZ7.5D5 from Microchip offers enhanced power dissipation at 2 W, making it applicable for circuits requiring higher thermal capability while maintaining the 7.5 V specification.

For automotive applications requiring AEC-Q101 qualification, the ZPY7V5-TAP main part maintains this certification. Substitute selection should account for application-specific qualification requirements. The 1N4737A variants from Fairchild and Lumimax are active products with broad industrial availability. The 2EZ7.5D5 is RoHS non-compliant; compliance requirements must be evaluated against application standards.

Frequently Asked Questions (FAQ)

Q: Can the 1N4737A variants be used as direct replacements for the ZPY7V5-TAP?

A: Yes. The 1N4737A, 1N4737A-T50A, and 1N4737ATR all share the same 7.5 V nominal voltage, ±5% tolerance, through-hole DO-41 package, and axial configuration. The 1 W power rating is lower than the main part's 1.3 W; substitution is valid for circuits operating within 1 W dissipation limits.

Q: What is the difference between the 2EZ7.5D5 and the main ZPY7V5-TAP part?

A: The 2EZ7.5D5 provides 2 W maximum power dissipation compared to the ZPY7V5-TAP's 1.3 W, offering enhanced thermal capability. Both maintain 7.5 V nominal voltage and ±5% tolerance. The 2EZ7.5D5 has lower impedance (2 Ohms vs. 1 Ohm) and lower reverse leakage (5 µA vs. 500 nA). Operating temperature range differs: 2EZ7.5D5 operates to 150°C maximum, while ZPY7V5-TAP operates to 175°C.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts use the DO-204AL (DO-41) axial through-hole package with identical mechanical dimensions and pin spacing, ensuring direct PCB compatibility without layout modifications.

Q: Which substitute part has the lowest reverse leakage current?

A: The ZPY7V5-TAP main part has the lowest reverse leakage at 500 nA @ 5 V. Among substitutes, the 2EZ7.5D5 has the lowest at 5 µA @ 5 V, followed by the 1N4737A variants at 10 µA @ 5 V.

Q: Is the 2EZ7.5D5 suitable for automotive applications?

A: The 2EZ7.5D5 is an active product with no stated automotive qualification or AEC-Q101 certification. Applications requiring automotive-grade components should prioritize the ZPY7V5-TAP or evaluate substitute parts against specific automotive qualification requirements.

Q: What is the impedance difference between the main part and substitutes?

A: The ZPY7V5-TAP has 1 Ohm maximum impedance. The 1N4737A variants have 4 Ohms maximum impedance, and the 2EZ7.5D5 has 2 Ohms maximum impedance. Higher impedance may affect circuit response characteristics in high-frequency or precision applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message