TZX11A-TAP Equivalent & Substitute Parts

Part Overview

The TZX11A-TAP is an 11 V, 500 mW Zener diode manufactured by Vishay General Semiconductor - Diodes Division in DO-35 (DO-204AH) axial through-hole packaging. This component is classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package type and functional category.

Substiute Parts

TZX11A-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 1640TZX11A-TAP Datasheet

Current PartRFQ

1N5241B

Microchip TechnologyIn Stock: 163141N5241B Datasheet

MFR RecommendedRFQ

1N5241BTR

Fairchild SemiconductorIn Stock: 3444771N5241BTR Datasheet

MFR RecommendedRFQ

BZX79C11

Taiwan Semiconductor CorporationIn Stock: 6200BZX79C11 Datasheet

MFR RecommendedRFQ

BZX79C11-T50A

onsemiIn Stock: 15975BZX79C11-T50A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Electrical Parameters:

• Zener voltage nominal value: 11 V
• Maximum power dissipation: 500 mW
• Package type: DO-35 (DO-204AH) axial through-hole

Secondary Electrical Parameters:

• Impedance (maximum): 20–25 Ohms
• Forward voltage: 1.2–1.5 V @ 100–200 mA
• Reverse leakage current: 100 nA–2 µA

Mechanical & Compliance Parameters:

• Mounting: Through-hole axial configuration
• Operating temperature range: minimum -65°C to 175°C
• RoHS3 compliance
• REACH unaffected status

All substitute parts listed maintain the core electrical specifications (11 V nominal, 500 mW maximum) and are packaged in DO-35 axial through-hole format. Variations in impedance, forward voltage, and reverse leakage current remain within acceptable engineering tolerances for this component category.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and are suitable for direct replacement in applications requiring an 11 V, 500 mW Zener diode in DO-35 axial through-hole packaging.

Compliance Considerations:

The TZX11A-TAP carries AEC-Q101 automotive qualification. Substitute parts 1N5241B, 1N5241BTR, BZX79C11, and BZX79C11-T50A are all REACH unaffected and ROHS3 compliant, meeting standard environmental and regulatory requirements.

Temperature Range:

The TZX11A-TAP operates from -65°C to 175°C. Substitute parts 1N5241BTR and BZX79C11-T50A extend the upper operating temperature to 200°C, providing additional thermal margin in high-temperature applications. Parts 1N5241B and BZX79C11 maintain the -65°C to 175°C range.

Electrical Performance:

All substitute parts deliver the specified 11 V nominal Zener voltage and 500 mW maximum power dissipation. Impedance values range from 20 to 25 Ohms, with reverse leakage current between 100 nA and 2 µA. These variations remain within acceptable tolerances for Zener diode applications.

Packaging & Availability:

All parts are supplied in DO-35 axial through-hole format. Packaging options vary by manufacturer: TZX11A-TAP is supplied in Tape & Box; 1N5241B in standard packaging; 1N5241BTR in Bulk; BZX79C11 in Tape & Reel; BZX79C11-T50A in Cut Tape.

Frequently Asked Questions (FAQ)

Q: Can I substitute the TZX11A-TAP with any of the listed parts?

A: Yes. All listed parts are electrically and mechanically compatible. They share the same 11 V nominal Zener voltage, 500 mW power rating, and DO-35 axial through-hole package. Electrical parameter variations (impedance, forward voltage, reverse leakage) fall within acceptable engineering tolerances for this component category.

Q: What is the difference between the TZX11A-TAP and the 1N5241B?

A: Both are 11 V, 500 mW Zener diodes in DO-35 packaging. The primary differences are manufacturer (Vishay vs. Microchip), impedance (25 Ohms vs. 22 Ohms), and tolerance specification (unspecified vs. ±5%). Operating temperature ranges are identical (-65°C to 175°C).

Q: Why do some substitute parts have lower impedance values?

A: Impedance variation is a normal characteristic across different manufacturers' Zener diode designs. The TZX11A-TAP specifies 25 Ohms maximum, while BZX79C11 and BZX79C11-T50A specify 20 Ohms maximum. Lower impedance values indicate tighter voltage regulation and are acceptable for substitution.

Q: Are there packaging differences I should consider?

A: All parts use DO-35 axial through-hole packaging and are mechanically identical. Packaging format (Tape & Box, Bulk, Tape & Reel, Cut Tape) affects supply and handling but does not impact electrical performance or board-level compatibility.

Q: Which substitute part has the best reverse leakage performance?

A: BZX79C11 and BZX79C11-T50A both specify 100 nA reverse leakage current at 8 V, compared to 1 µA (TZX11A-TAP) and 2 µA (1N5241B, 1N5241BTR). Lower reverse leakage reduces standby current in voltage regulation circuits.

Q: Can I use 1N5241BTR in applications requiring -65°C to 200°C operation?

A: Yes. The 1N5241BTR is rated for -65°C to 200°C operation, exceeding the TZX11A-TAP specification of -65°C to 175°C. This part is suitable for high-temperature applications.

Q: Are all substitute parts RoHS3 compliant?

A: TZX11A-TAP, BZX79C11, and BZX79C11-T50A are explicitly marked ROHS3 compliant. Compliance status for 1N5241B and 1N5241BTR is not specified in the provided data.

Q: What does AEC-Q101 qualification mean for the TZX11A-TAP?

A: AEC-Q101 is an automotive qualification standard. The TZX11A-TAP meets this specification for automotive-grade applications. Substitute parts do not carry explicit AEC-Q101 designation in the provided data.