Equivalent & Substitute Parts for ZPY47-TAP Zener Diode

Part Overview

The ZPY47-TAP is a 47 V, 1.3 W Zener diode manufactured by Vishay General Semiconductor - Diodes Division, packaged in DO-204AL (DO-41) axial through-hole configuration. This component is classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified to address inventory availability, packaging format preferences, or supply chain requirements while maintaining electrical and mechanical compatibility within specified tolerance ranges.

Substiute Parts

ZPY47-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 1055ZPY47-TAP Datasheet

Current PartRFQ

1N4756A-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 204821N4756A-TAP Datasheet

DirectRFQ

1N4756A

Lumimax Optoelectronic TechnologyIn Stock: 103191N4756A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ZPY47-TAP are identified based on strict electrical and mechanical parameter matching. The substitution logic is structured as follows:

Primary Substitution Criteria:

• Zener voltage (Nom): 47 V (exact match required)
• Tolerance: ±5% (exact match required)
• Package / Case: DO-204AL, DO-41, Axial (exact match required)
• Mounting Type: Through Hole (exact match required)
• Power - Max: ≥ 1.3 W (equal or greater acceptable)
• Operating Temperature: ≥ 175°C (equal or greater acceptable)

Grouping Categories:

Group 1 - Direct Electrical & Packaging Equivalent (Packaging Format Variant) 1N4756A-TAP (Vishay General Semiconductor - Diodes Division): Identical electrical specifications and package type. Differs only in tape format (Cut Tape vs. Tape & Box). Maintains AEC-Q101 qualification and ROHS3 compliance.

Group 2 - Electrical Equivalent with Packaging Format Variant (Alternative Manufacturer) 1N4756A (Lumimax Optoelectronic Technology): Meets core electrical requirements (47 V, ±5%, DO-41 axial). Power rating of 1 W is below the 1.3 W specification of the main part. Operating temperature range extends to 200°C. Lacks automotive grade designation and AEC-Q101 qualification. Suitable only for non-automotive applications or where thermal derating is acceptable.

Parameter Comparison

Engineering Selection Recommendations

For Automotive Applications: The 1N4756A-TAP (Vishay) is the primary substitute for the ZPY47-TAP. Both components maintain identical electrical specifications, AEC-Q101 automotive qualification, and ROHS3 compliance. The substitution is valid across all automotive design requirements. The only difference is packaging format (Cut Tape vs. Tape & Box), which affects procurement and assembly logistics but not electrical performance or reliability.

For Non-Automotive Applications: The 1N4756A (Lumimax) may be considered only when automotive qualification is not required. This substitute has a reduced power rating (1 W vs. 1.3 W), which requires thermal analysis to confirm adequate derating margin in the target circuit. The absence of AEC-Q101 qualification disqualifies this part from automotive use.

Compliance Considerations: All three parts maintain RoHS compliance and REACH unaffected status. The ZPY47-TAP and 1N4756A-TAP are ROHS3 compliant, while the 1N4756A is RoHS compliant. For applications with strict ROHS3 requirements, only the first two options are acceptable.

Frequently Asked Questions (FAQ)

Q1: Can I substitute 1N4756A-TAP for ZPY47-TAP in an automotive circuit? Yes. The 1N4756A-TAP is a direct substitute. Both parts have identical 47 V zener voltage, ±5% tolerance, 1.3 W power rating, DO-41 axial package, and AEC-Q101 automotive qualification. The only difference is tape format (Cut Tape vs. Tape & Box), which does not affect electrical performance.

Q2: What is the difference between 1N4756A-TAP and 1N4756A? The 1N4756A-TAP is manufactured by Vishay with Cut Tape packaging and AEC-Q101 qualification. The 1N4756A is manufactured by Lumimax with Tape & Box packaging, lacks automotive qualification, and has a reduced power rating of 1 W instead of 1.3 W. For automotive applications, use only the Vishay 1N4756A-TAP.

Q3: Can I use the Lumimax 1N4756A as a substitute in automotive designs? No. The Lumimax 1N4756A lacks AEC-Q101 automotive qualification and has a reduced power rating (1 W vs. 1.3 W). This part is not suitable for automotive applications. Use only for non-automotive circuits where thermal derating is acceptable.

Q4: Why does the 1N4756A-TAP have higher impedance (80 Ohms) than the ZPY47-TAP (40 Ohms)? Impedance variation within the same voltage and power class is a normal manufacturing characteristic. Both values fall within acceptable ranges for 47 V zener diodes. Circuit designers should verify impedance specifications against their specific application requirements, particularly for high-frequency or noise-sensitive circuits.

Q5: Are there any temperature rating differences between substitutes? The ZPY47-TAP and 1N4756A-TAP both specify 175°C maximum operating temperature. The Lumimax 1N4756A specifies -65°C to 200°C, providing a wider operating range. However, this does not qualify it for automotive use due to missing AEC-Q101 qualification.

Q6: What does the tape format difference (TB vs. CT) mean for my assembly process? TB (Tape & Box) indicates components are supplied in tape format with a box for bulk storage. CT (Cut Tape) indicates components are supplied in cut tape format for direct feeder use. Both formats contain the same component; the difference is in supply and handling logistics. Verify your assembly equipment compatibility with the selected tape format.

Q7: Are all three parts RoHS compliant? Yes, all three parts are RoHS compliant. The ZPY47-TAP and 1N4756A-TAP are specifically ROHS3 compliant. The Lumimax 1N4756A is RoHS compliant. For applications requiring ROHS3 certification, use only the Vishay parts.