TZX3V0A-TAP Equivalent & Substitute Parts

Part Overview

The TZX3V0A-TAP is a 3 V, 500 mW Zener diode manufactured by Vishay General Semiconductor - Diodes Division in the DO-35 (DO-204AH) 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 when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

TZX3V0A-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 821TZX3V0A-TAP Datasheet

Current PartRFQ

1N4619-1

Microchip TechnologyIn Stock: 13161N4619-1 Datasheet

MFR RecommendedRFQ

1N5225B

Taiwan Semiconductor CorporationIn Stock: 13301N5225B Datasheet

MFR RecommendedRFQ

1N5225B TR PBFREE

Central Semiconductor CorpIn Stock: 100631N5225B TR PBFREE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TZX3V0A-TAP is determined by the following critical parameters:

• Zener Voltage (Vz): Must be 3 V nominal
• Power Dissipation (P-Max): Must be 500 mW
• Package Configuration: Must be DO-35 (DO-204AH) axial through-hole
• Mounting Type: Must be through-hole compatible
• Operating Temperature Range: Must support the application's thermal requirements

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in secondary parameters such as impedance (Zzt), reverse leakage current, forward voltage, and tolerance do not preclude substitution when the primary parameters align.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Preferred Substitutes):

The 1N5225B TR PBFREE (Central Semiconductor Corp) and 1N5225B (Taiwan Semiconductor Corporation) are the preferred substitute options. Both maintain ROHS3 compliance matching the original TZX3V0A-TAP specification and support extended operating temperature ranges (-65 to 200°C and up to 200°C respectively). These parts are electrically and mechanically equivalent with identical zener voltage, power rating, and package configuration.

Secondary Selection:

The 1N4619-1 (Microchip Technology) is electrically compatible with matching zener voltage and power dissipation. However, this part is RoHS non-compliant, which may restrict its use in applications requiring regulatory compliance. Selection of this substitute should be limited to legacy designs or applications where RoHS compliance is not mandated.

Compliance Considerations:

All substitute parts maintain AEC-Q101 automotive qualification status through their respective manufacturers' product lines. The TZX3V0A-TAP carries explicit AEC-Q101 certification; substitute parts should be verified for equivalent automotive-grade qualification when used in automotive applications.

Frequently Asked Questions (FAQ)

Q: Can the 1N4619-1 be used as a direct replacement for the TZX3V0A-TAP?

A: The 1N4619-1 provides electrical equivalence with identical 3 V zener voltage and 500 mW power rating in the same DO-35 package. However, the 1N4619-1 is RoHS non-compliant, whereas the TZX3V0A-TAP is ROHS3 compliant. Use of the 1N4619-1 is restricted to applications where RoHS compliance is not required.

Q: What is the difference between the 1N5225B and 1N5225B TR PBFREE?

A: Both parts are electrically identical 3 V, 500 mW zener diodes in DO-35 packages. The primary difference is the packaging format: 1N5225B is supplied in Tape & Reel (TR) format, while 1N5225B TR PBFREE is supplied in Cut Tape (CT) format. Both are ROHS3 compliant and lead-free. Selection depends on assembly equipment compatibility and inventory management requirements.

Q: Are all substitute parts suitable for automotive applications?

A: The TZX3V0A-TAP carries explicit AEC-Q101 automotive qualification. Substitute parts should be verified for equivalent automotive-grade certification when used in automotive designs. Microchip's 1N4619-1 and Taiwan Semiconductor's 1N5225B should be confirmed for automotive qualification status with their respective manufacturers.

Q: What are the key electrical differences between substitute options?

A: All substitutes maintain the critical 3 V zener voltage and 500 mW power rating. Secondary parameter variations include impedance (Zzt) ranging from 29 to 1600 Ohms, reverse leakage current from 400 nA to 50 µA, and forward voltage from 1.1 to 1.5 V. These variations do not affect basic zener diode functionality but may influence circuit performance in precision applications.

Q: Can substitute parts be mixed in the same assembly?

A: All substitute parts are mechanically and electrically compatible for through-hole assembly in the same PCB footprint. However, mixing different manufacturers in production runs may introduce process control variations. Consistency within a single production batch is recommended.

Q: What is the operating temperature advantage of the 1N5225B TR PBFREE?

A: The 1N5225B TR PBFREE supports an operating temperature range of -65 to 200°C, compared to the TZX3V0A-TAP range of -65 to 175°C. This provides an additional 25°C of high-temperature operation capability, beneficial for applications in elevated thermal environments.