TZX22B-TAP Equivalent & Substitute Parts

Part Overview

The TZX22B-TAP is an active Zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated at 22 V nominal Zener voltage with 500 mW maximum power dissipation in a DO-35 through-hole package. This component is qualified to AEC-Q101 automotive standards and operates across the temperature range of -65°C to 175°C. Substitute parts are identified when equivalent electrical performance is required but the original part is unavailable, when alternative packaging or thermal characteristics better suit application requirements, or when supply chain considerations necessitate component alternatives.

Substiute Parts

TZX22B-TAP

Vishay General Semiconductor - Diodes DivisionIn Stock: 874TZX22B-TAP Datasheet

Current PartRFQ

BZV85-C22,113

Nexperia USA Inc.In Stock: 1201BZV85-C22,113 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TZX22B-TAP is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Zener voltage matching at 22 V nominal
• Through-hole axial mounting configuration
• RoHS3 compliance and automotive-grade qualification
• Operating temperature range compatibility
• Reverse leakage and forward voltage characteristics within acceptable application tolerances

Allowable Variations:

• Power dissipation rating may exceed the original specification (500 mW minimum requirement)
• Impedance values may differ provided the substitute maintains voltage regulation performance
• Package designation may vary (DO-35 to DO-41) as both are standard through-hole axial formats
• Tolerance specifications may differ from the original part

The BZV85-C22,113 qualifies as a direct substitute based on matching 22 V Zener voltage, through-hole axial mounting, RoHS3 compliance, and automotive-grade performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

TZX22B-TAP Selection Criteria:

• Original design specification calls for DO-35 package form factor
• Application limited to -65°C to 175°C operating range
• 500 mW power dissipation ceiling is design constraint
• Automotive AEC-Q101 qualification required
• Vishay component ecosystem preferred for supply chain continuity

BZV85-C22,113 Selection Criteria:

• DO-41 package acceptable in application layout
• Extended temperature range to 200°C provides operational margin
• 1.3 W power rating accommodates higher dissipation requirements
• Nexperia manufacturing and supply chain preferred
• Lower impedance (25 Ohms vs. 65 Ohms) improves voltage regulation performance
• ±5% tolerance specification meets or exceeds application requirements
• ROHS3 compliance and automotive-grade performance maintained

Both parts maintain active product status, full RoHS3 compliance, and automotive-grade qualification. Selection between these components depends on specific application constraints regarding package dimensions, thermal requirements, and supply availability.

Frequently Asked Questions (FAQ)

Q: Can the BZV85-C22,113 replace the TZX22B-TAP in all applications?

A: The BZV85-C22,113 is electrically compatible as a substitute provided the application accommodates the DO-41 package form factor in place of the DO-35. Both components deliver 22 V Zener voltage regulation. The substitute's higher power rating (1.3 W vs. 500 mW) and lower impedance (25 Ohms vs. 65 Ohms) represent performance improvements. Physical board layout must accommodate the different package dimensions.

Q: What is the difference between DO-35 and DO-41 packages?

A: Both DO-35 (DO-204AH) and DO-41 (DO-204AL) are standard through-hole axial diode packages with identical electrical interface. The DO-41 package is physically larger and accommodates higher power dissipation. Component lead spacing and body diameter differ between the two formats. PCB layout and component placement must account for these dimensional differences.

Q: Does the BZV85-C22,113 maintain automotive qualification?

A: The BZV85-C22,113 is manufactured to automotive-grade standards and maintains ROHS3 compliance equivalent to the TZX22B-TAP. Both components are suitable for automotive applications requiring AEC-Q101 qualification levels.

Q: Why does the substitute have lower reverse leakage current?

A: The BZV85-C22,113 specifies 50 nA reverse leakage at 15.5 V compared to 1 µA at 17 V for the TZX22B-TAP. Lower reverse leakage represents improved device performance and is not a compatibility concern. This characteristic benefits applications requiring minimal standby current.

Q: What does the ±5% tolerance on the BZV85-C22,113 mean?

A: The ±5% tolerance indicates the Zener voltage will remain within the range of 20.9 V to 23.1 V (22 V ± 5%). This specification ensures voltage regulation performance within defined limits. Applications requiring tighter voltage tolerance must verify this specification against design requirements.

Q: Are there any temperature range considerations for substitution?

A: The BZV85-C22,113 operates to 200°C maximum compared to 175°C for the TZX22B-TAP. The extended upper temperature limit of the substitute provides additional operational margin. Both components maintain the same -65°C minimum operating temperature. Application thermal environment determines whether the extended range provides practical benefit.