ZPY5V6-TAP Equivalent & Substitute Parts

Part Overview

The ZPY5V6-TAP is a Zener diode rated at 5.6 V nominal voltage with 1.3 W maximum power dissipation, manufactured by Vishay General Semiconductor - Diodes Division. This component is packaged in DO-204AL (DO-41) axial configuration for through-hole mounting applications. The part maintains Active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to inventory constraints, manufacturing discontinuation, or application-specific performance requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	5.6	V
Tolerance	±5%	%
Power - Max	1.3	W
Impedance (Max)	1	Ohms
Current - Reverse Leakage @ Vr	500 nA @ 1.5 V	nA
Operating Temperature	175	°C
Package / Case	DO-204AL, DO-41, Axial	—
Mounting Type	Through Hole	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ZPY5V6-TAP is determined by the following critical parameters: nominal Zener voltage (5.6 V), voltage tolerance (±5%), maximum power rating, package type (DO-204AL/DO-41 axial through-hole), and automotive-grade qualification (AEC-Q101). All identified substitute parts maintain the 5.6 V nominal voltage and ±5% tolerance specification. Variations in maximum power dissipation, impedance characteristics, and reverse leakage current are permitted within the constraints of the application circuit design. Operating temperature range and RoHS compliance status are secondary selection criteria when primary electrical parameters align.

Parameter Comparison

Parameter	ZPY5V6-TAP	1N4734A-TAP	1N4734ATR	1N5919BRLG
Manufacturer	Vishay	Vishay	onsemi	onsemi
Voltage - Zener (Nom)	5.6 V	5.6 V	5.6 V	5.6 V
Tolerance	±5%	±5%	±5%	±5%
Power - Max	1.3 W	1.3 W	1 W	3 W
Impedance (Max)	1 Ohm	5 Ohms	5 Ohms	2 Ohms
Current - Reverse Leakage @ Vr	500 nA @ 1.5 V	10 µA @ 2 V	10 µA @ 2 V	5 µA @ 3 V
Operating Temperature	175°C	175°C (TJ)	-65°C ~ 200°C	-65°C ~ 200°C
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Grade	Automotive	Automotive	Not specified	Not specified
Qualification	AEC-Q101	AEC-Q101	Not specified	Not specified
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

1N4734A-TAP (Vishay): Direct equivalent to ZPY5V6-TAP with identical nominal voltage (5.6 V), tolerance (±5%), and maximum power rating (1.3 W). Both parts carry AEC-Q101 automotive qualification and ROHS3 compliance. This substitute is suitable for direct replacement in automotive applications requiring consistent performance characteristics.

1N4734ATR (onsemi): Maintains 5.6 V nominal voltage and ±5% tolerance with 1 W maximum power rating. Operating temperature range extends to -65°C to 200°C, providing broader thermal coverage than the primary part. Automotive qualification status is not specified for this variant. Selection is appropriate for applications where maximum power dissipation does not exceed 1 W and extended temperature range is beneficial.

1N5919BRLG (onsemi): Provides 5.6 V nominal voltage and ±5% tolerance with elevated 3 W maximum power rating. Impedance is specified at 2 Ohms with reduced reverse leakage current (5 µA @ 3 V). Operating temperature range extends to -65°C to 200°C. This substitute accommodates higher power dissipation requirements while maintaining voltage regulation characteristics. Automotive qualification status is not specified.

Frequently Asked Questions (FAQ)

Q: Can 1N4734A-TAP replace ZPY5V6-TAP in all applications?

A: Yes. The 1N4734A-TAP is a direct equivalent with identical nominal voltage (5.6 V), tolerance (±5%), maximum power (1.3 W), and automotive qualification (AEC-Q101). Both parts are ROHS3 compliant and packaged in DO-204AL (DO-41) axial configuration.

Q: What is the difference between 1N4734ATR and 1N4734A-TAP?

A: Both parts share 5.6 V nominal voltage, ±5% tolerance, and ROHS3 compliance. The 1N4734ATR is manufactured by onsemi with 1 W maximum power (versus 1.3 W for the Vishay variant) and extended operating temperature range (-65°C to 200°C). The 1N4734A-TAP is manufactured by Vishay with 1.3 W maximum power and 175°C maximum operating temperature.

Q: When should 1N5919BRLG be selected instead of ZPY5V6-TAP?

A: The 1N5919BRLG is selected when circuit design requires maximum power dissipation exceeding 1.3 W. This part is rated for 3 W maximum power while maintaining 5.6 V nominal voltage and ±5% tolerance. Package and mounting type remain compatible (DO-204AL/DO-41 axial through-hole).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All identified substitute parts (1N4734A-TAP, 1N4734ATR, and 1N5919BRLG) are ROHS3 compliant and REACH unaffected, matching the compliance status of the primary ZPY5V6-TAP component.

Q: What is the impact of impedance variation among substitute parts?

A: The ZPY5V6-TAP specifies 1 Ohm maximum impedance, while 1N4734A-TAP and 1N4734ATR specify 5 Ohms, and 1N5919BRLG specifies 2 Ohms. Higher impedance values result in increased voltage regulation variation under load current changes. Selection depends on circuit tolerance requirements for voltage stability.

Q: Do all substitute parts carry automotive qualification?

A: The ZPY5V6-TAP and 1N4734A-TAP both carry AEC-Q101 automotive qualification. The 1N4734ATR and 1N5919BRLG do not specify automotive qualification status. For applications requiring automotive-grade components, 1N4734A-TAP is the preferred substitute.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. All parts use identical DO-204AL (DO-41) axial package with through-hole mounting. PCB footprints and lead spacing are compatible across all substitute options. No design modifications are required for mechanical integration.

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