1N5261C-TAP Equivalent & Substitute Parts

Part Overview

The 1N5261C-TAP is an automotive-grade Zener diode manufactured by Vishay General Semiconductor - Diodes Division. This component is a 47 V, 500 mW Through Hole Zener diode in DO-35 package configuration, qualified to AEC-Q101 automotive standards. The part is currently Active in product status with 1004 units in stock inventory.

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support component selection based on specific application requirements and performance parameters.

Substiute Parts

1N5261C-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 10611N5261C-TAP Datasheet

Current PartRFQ

BZX79-B47,143

Nexperia USA Inc.In Stock: 1060BZX79-B47,143 Datasheet

MFR RecommendedRFQ

BZX79-C47,143

NXP SemiconductorsIn Stock: 176069BZX79-C47,143 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1N5261C-TAP are identified based on the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Zener voltage: 47 V nominal
• Package type: DO-35 (DO-204AH) Through Hole Axial configuration
• Mounting compatibility: Through Hole
• Regulatory compliance: RoHS3 Compliant, REACH Unaffected
• Moisture sensitivity: MSL 1 (Unlimited)

Secondary Compatibility Parameters:

• Operating temperature range overlap
• Voltage tolerance specifications
• Maximum power dissipation capability
• Impedance characteristics
• Reverse leakage current specifications

The substitute parts BZX79-B47,143 and BZX79-C47,143 share the same 47 V nominal Zener voltage, DO-35 package configuration, and Through Hole mounting type. Both maintain RoHS3 compliance and MSL 1 rating. Differences in power rating, impedance, and tolerance specifications are documented in the parameter comparison table for engineering evaluation.

Parameter Comparison

Engineering Selection Recommendations

1N5261C-TAP (Vishay) - Primary Selection

The 1N5261C-TAP is the specified component with AEC-Q101 automotive qualification. This part is recommended for applications requiring automotive-grade reliability and the specified 500 mW power dissipation capability. The ±2% voltage tolerance and 105 Ohm impedance provide precise voltage regulation characteristics. Operating temperature range extends to 175°C. RoHS3 compliance and MSL 1 rating confirm regulatory suitability.

BZX79-B47,143 (Nexperia) - Substitute Option

The BZX79-B47,143 is an active substitute with identical 47 V nominal voltage and ±2% tolerance. This part operates across an extended temperature range (-65°C to 200°C) and maintains RoHS3 compliance. The maximum power rating is 400 mW, which is lower than the primary part. The impedance specification is 170 Ohms. This substitute is suitable for applications where the 400 mW power rating is sufficient and extended temperature operation is beneficial.

BZX79-C47,143 (NXP) - Substitute Option

The BZX79-C47,143 is an active substitute with 47 V nominal voltage and ±5% tolerance. This part also operates across the extended temperature range (-65°C to 200°C). The maximum power rating is 400 mW with 170 Ohm impedance. The ±5% tolerance is wider than the primary part. This substitute is suitable for applications where the relaxed tolerance specification and 400 mW power rating are acceptable.

Selection Basis:

All three parts share identical 47 V Zener voltage, DO-35 Through Hole package configuration, and MSL 1 moisture sensitivity rating. Component selection depends on specific application requirements regarding power dissipation, voltage tolerance precision, and operating temperature range. All parts maintain active product status and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can BZX79-B47,143 or BZX79-C47,143 directly replace 1N5261C-TAP in all applications?

A: Direct replacement depends on application power requirements. The 1N5261C-TAP is rated for 500 mW maximum power dissipation, while both substitute parts are rated for 400 mW. Applications requiring power dissipation above 400 mW require the 1N5261C-TAP. For applications operating at or below 400 mW, the substitute parts are mechanically and electrically compatible based on shared 47 V nominal voltage, DO-35 package, and Through Hole mounting configuration.

Q: What is the difference between BZX79-B47,143 and BZX79-C47,143?

A: The primary difference is voltage tolerance specification. BZX79-B47,143 maintains ±2% tolerance matching the 1N5261C-TAP, while BZX79-C47,143 has ±5% tolerance. Both parts share identical 47 V nominal voltage, 400 mW power rating, 170 Ohm impedance, and extended operating temperature range to 200°C. Selection between these two depends on tolerance requirements for the specific application.

Q: Are all three parts suitable for automotive applications?

A: The 1N5261C-TAP carries AEC-Q101 automotive qualification. The BZX79-B47,143 and BZX79-C47,143 are active products with RoHS3 compliance and extended operating temperature ranges. Automotive application suitability for the substitute parts depends on specific automotive qualification requirements of the end application. Verification of automotive qualification status for substitute parts is necessary for automotive-grade system requirements.

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

A: The 1N5261C-TAP has maximum impedance of 105 Ohms, while both BZX79-B47,143 and BZX79-C47,143 have maximum impedance of 170 Ohms. Lower impedance in the primary part provides better voltage regulation characteristics and lower dynamic resistance. Applications sensitive to impedance specifications should account for this 65 Ohm difference in circuit performance calculations.

Q: Do all parts have identical package dimensions?

A: All three parts use DO-35 (DO-204AH) Through Hole Axial package configuration. Physical dimensions and pin spacing are identical, enabling direct mechanical substitution on printed circuit boards designed for DO-35 package components.

Q: What is the operating temperature difference?

A: The 1N5261C-TAP operates from -65°C to 175°C. Both BZX79-B47,143 and BZX79-C47,143 operate from -65°C to 200°C, providing 25°C extended upper temperature range. Applications operating above 175°C require the substitute parts.

Q: Are all parts RoHS3 compliant?

A: The 1N5261C-TAP and BZX79-B47,143 are explicitly specified as ROHS3 Compliant. The BZX79-C47,143 RoHS status is not specified in the provided data. Confirmation of RoHS3 compliance for BZX79-C47,143 is necessary for applications with RoHS compliance requirements.