BZX85B13-TR Equivalent & Substitute Parts

Part Overview

The BZX85B13-TR is an automotive-grade Zener diode manufactured by Vishay General Semiconductor - Diodes Division. This component operates at a nominal Zener voltage of 13 V with a maximum power dissipation of 1.3 W in a through-hole DO-41 package. The part is supplied in Tape & Reel (TR) packaging format and maintains Active product status with AEC-Q101 automotive qualification.

Substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits equivalent electrical performance within specified tolerance ranges. The BZX85B13-TR maintains 1082 pieces in current inventory; however, alternative configurations and manufacturers provide additional sourcing options for production planning and design flexibility.

Substiute Parts

BZX85B13-TR

Vishay General Semiconductor - Diodes DivisionIn Stock: 1115BZX85B13-TR Datasheet

Current PartRFQ

BZX85B13-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 24534BZX85B13-TAP Datasheet

Parametric EquivalentRFQ

1N4743A-T50A

onsemiIn Stock: 64431N4743A-T50A Datasheet

MFR RecommendedRFQ

2EZ13D5

Microchip TechnologyIn Stock: 22892EZ13D5 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BZX85B13-TR is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage nominal value: 13 V
• Package / Case format: DO-204AL (DO-41) through-hole axial configuration
• Mounting type: Through Hole
• Maximum power dissipation: equal to or greater than 1.3 W
• Operating temperature range: must encompass or exceed -55°C to 175°C
• Impedance (maximum): 10 Ohms or lower

Secondary Compatibility Factors:

• Voltage tolerance: ±2% to ±5% acceptable
• Reverse leakage current: specifications provided for reference
• RoHS compliance status
• Product status: Active

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical specifications with different packaging format) and Manufacturer Recommended Alternatives (equivalent voltage and package with acceptable tolerance and power variations).

Parameter Comparison

Engineering Selection Recommendations

BZX85B13-TAP (Parametric Equivalent)

The BZX85B13-TAP is a direct parametric equivalent to the BZX85B13-TR. Both components are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical specifications: 13 V nominal Zener voltage, ±2% tolerance, 1.3 W maximum power, and 10 Ohms maximum impedance. The primary difference is packaging format: BZX85B13-TAP is supplied in Cut Tape (CT) format rather than Tape & Reel (TR). Both maintain automotive-grade classification with AEC-Q101 qualification and ROHS3 compliance. This substitute is suitable for applications where packaging format flexibility is acceptable. Inventory availability for BZX85B13-TAP is 24435 pieces.

1N4743A-T50A (Manufacturer Recommended Alternative)

The 1N4743A-T50A, manufactured by onsemi, provides equivalent 13 V Zener voltage performance in the same DO-41 package. This substitute operates across an extended temperature range (-65°C to 200°C) compared to the main part (-55°C to 175°C). Key differences include ±5% voltage tolerance (versus ±2%), reduced maximum power rating of 1 W (versus 1.3 W), and higher reverse leakage current of 5 µA at 9.9 V. The 1N4743A-T50A is ROHS3 compliant but does not carry automotive-grade or AEC-Q101 qualification. This substitute is applicable for non-automotive applications or where the reduced power rating and wider tolerance are acceptable. Inventory availability is 6381 pieces.

2EZ13D5 (Manufacturer Recommended Alternative)

The 2EZ13D5, manufactured by Microchip Technology, maintains 13 V nominal Zener voltage with ±5% tolerance in the DO-41 package. This substitute provides enhanced power dissipation capability at 2 W maximum (versus 1.3 W) and superior impedance performance at 5 Ohms maximum (versus 10 Ohms). Operating temperature range is -65°C to 150°C. Critical consideration: the 2EZ13D5 is RoHS non-compliant, which may restrict use in applications requiring RoHS3 compliance. This substitute is suitable for applications prioritizing higher power handling and lower impedance where RoHS compliance is not mandated. Inventory availability is 2209 pieces.

Frequently Asked Questions (FAQ)

Q: Can BZX85B13-TAP be used as a direct replacement for BZX85B13-TR?

A: Yes. Both components are manufactured by Vishay with identical electrical specifications (13 V, ±2%, 1.3 W, 10 Ohms impedance) and automotive-grade AEC-Q101 qualification. The only difference is packaging format: BZX85B13-TAP uses Cut Tape (CT) while BZX85B13-TR uses Tape & Reel (TR). Substitution is valid when packaging format flexibility is acceptable for assembly processes.

Q: What are the limitations of using 1N4743A-T50A as a substitute?

A: The 1N4743A-T50A has three key limitations: (1) voltage tolerance is ±5% instead of ±2%, which may affect circuit precision; (2) maximum power rating is 1 W instead of 1.3 W, reducing thermal margin; (3) it lacks automotive-grade and AEC-Q101 qualification, restricting use in automotive applications. Reverse leakage current is also higher at 5 µA. This substitute is suitable only for non-automotive applications where these parameters are acceptable.

Q: Is 2EZ13D5 suitable for automotive applications?

A: No. The 2EZ13D5 is RoHS non-compliant and does not carry automotive-grade or AEC-Q101 qualification. Additionally, its operating temperature range (-65°C to 150°C) does not fully encompass the BZX85B13-TR range (-55°C to 175°C). This substitute is restricted to non-automotive applications where RoHS compliance is not required.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel (TR) packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape (CT) packaging supplies components on tape segments cut to specific lengths, typically used for lower-volume or manual assembly processes. Electrical performance is identical; the difference is logistical and assembly-related.

Q: Can I use 2EZ13D5 in place of BZX85B13-TR if power dissipation is a concern?

A: The 2EZ13D5 offers higher power dissipation (2 W versus 1.3 W) and lower impedance (5 Ohms versus 10 Ohms), which are advantageous for thermal performance. However, substitution is not recommended due to RoHS non-compliance and lack of automotive qualification. If the application is non-automotive and RoHS compliance is not required, the 2EZ13D5 may be considered for improved thermal characteristics.

Q: What parameters must remain constant for a valid substitution?

A: The following parameters must remain constant or equivalent: (1) Zener voltage nominal value (13 V); (2) package type (DO-204AL / DO-41 through-hole axial); (3) mounting type (through-hole); (4) maximum power dissipation (equal to or greater than 1.3 W); (5) impedance (10 Ohms or lower). Voltage tolerance, temperature range, and compliance certifications may vary depending on application requirements.

Q: Are all substitute parts in Active product status?

A: Yes. All substitute parts listed—BZX85B13-TAP, 1N4743A-T50A, and 2EZ13D5—maintain Active product status, indicating ongoing manufacturing and availability.