Equivalent & Substitute Parts Reference for TZX11B-TAP

Part Overview

The Vishay General Semiconductor TZX11B-TAP is an 11 V, 500 mW automotive-grade Zener diode in a DO-204AH (DO-35) through-hole axial package. With an active production status, it is suitable for voltage regulation and protection in automotive and industrial applications. In engineering workflows, identifying alternative models is necessary to address supply chain requirements, qualification needs, or equivalency in design. Alternative selection is determined solely by core electrical and mechanical specification equivalence as detailed below.

Key Parameters

Manufacturer Part Number	Voltage - Zener (Nom) (Vz)	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Qualification	Part Status
TZX11B-TAP	11 V	500 mW	25 Ohms	1 µA @ 8.2 V	1.5 V @ 200 mA	-65°C ~ 175°C	Through Hole	DO-204AH, DO-35, Axial	DO-204AH (DO-35)	ROHS3 Compliant	AEC-Q101	Active

Substitute Part Grouping Explanation

Substitute selection is constrained to parts matching the electrical and mechanical specifications of TZX11B-TAP: Zener voltage of 11 V nominal, maximum power of 500 mW, identical or lower impedance, equivalent or lower reverse leakage current, suitable forward voltage, matching package and mounting type (DO-35 axial through-hole). Additional group selection is filtered by operating temperature range, qualification standards, RoHS compliance, and active status.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Zener (Nom) (Vz)	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Qualification	Part Status
TZX11B-TAP	Vishay General Semiconductor	11 V	500 mW	25 Ohms	1 µA @ 8.2 V	1.5 V @ 200 mA	-65°C ~ 175°C	Through Hole	DO-204AH, DO-35, Axial	DO-204AH (DO-35)	ROHS3 Compliant	AEC-Q101	Active
1N5241B	Microchip Technology	11 V	500 mW	22 Ohms	2 µA @ 8.4 V	1.5 V @ 200 mA	-65°C ~ 175°C (TA)	Through Hole	DO-204AH, DO-35, Axial	DO-35 (DO-204AH)	-	-	Active
1N5241BTR	Fairchild Semiconductor	11 V	500 mW	22 Ohms	2 µA @ 8.4 V	1.2 V @ 200 mA	-65°C ~ 200°C	Through Hole	DO-204AH, DO-35, Axial	DO-35 (DO-204AH)	-	-	Active
BZX79C11	Taiwan Semiconductor Corporation	11 V	500 mW	20 Ohms	100 nA @ 8 V	1.5 V @ 100 mA	-65°C ~ 175°C (TJ)	Through Hole	DO-204AH, DO-35, Axial	DO-35	ROHS3 Compliant	-	Active

Engineering Selection Recommendations

For direct substitution, choose parts with an active status and equivalent or better compliance criteria, including RoHS3 and qualification listings. All listed substitutes possess the required 11 V Zener voltage, 500 mW power rating, DO-35 (DO-204AH) package, and through-hole mounting, supporting compatibility in existing designs and inventory processes.

Frequently Asked Questions (FAQ)

Q1: What are the core criteria for substituting TZX11B-TAP?
A1: Substitution requires matching Zener voltage, power rating, package/case, mounting type, and corresponding compliance or qualification standards.

Q2: Do the recommended substitute parts fit into a DO-35 axial footprint?
A2: All substitutes use the DO-204AH (DO-35) axial package, ensuring mechanical compatibility for through-hole circuits.

Q3: Are there significant differences in reverse leakage or forward voltage among these Zener diodes?
A3: The substitute parts present similar reverse leakage and forward voltage values, with minor variations retained within acceptable design equivalency.

Q4: How do I verify qualification and compliance among substitutes?
A4: Review the RoHS status and qualification fields provided for each part. TZX11B-TAP and BZX79C11 are both RoHS3 compliant; TZX11B-TAP lists AEC-Q101 qualification.

Q5: Is product status relevant for substitution decisions?
A5: Only parts marked 'Active' are considered suitable for direct substitution to ensure continued supply and reliability in system design.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message