2M22ZH Zener Diode Equivalent & Substitute Parts

Part Overview

The 2M22ZH is an active-status Zener diode manufactured by Taiwan Semiconductor Corporation, rated for 22 V nominal Zener voltage with 2 W maximum power dissipation. This component is packaged in DO-204AC (DO-15) axial through-hole configuration and is qualified to AEC-Q101 automotive standards. The device operates across a temperature range of -55°C to 175°C and maintains ±5% voltage tolerance. Substitute parts are identified when equivalent electrical parameters and mechanical compatibility exist, enabling component selection flexibility for procurement, inventory management, or design optimization purposes.

Substiute Parts

2M22ZH

Taiwan Semiconductor CorporationIn Stock: 7752M22ZH Datasheet

Current PartRFQ

1N5358B-TP

Micro Commercial CoIn Stock: 127351N5358B-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2M22ZH are identified based on the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Voltage - Zener (Nom): 22 V (exact match required)
• Tolerance: ±5% (matching tolerance specification)
• Current - Reverse Leakage @ Vr: 500 nA @ 16.7 V (matching leakage specification)
• Package / Case: DO-204AC, DO-15, Axial (mechanical compatibility)
• Mounting Type: Through Hole (assembly compatibility)

Substitution Allowances:

• Power - Max: Substitute parts with equal or greater power rating are acceptable
• Impedance (Max): Substitute parts with equal or lower impedance are acceptable
• Operating Temperature Range: Substitute parts with equal or wider temperature range are acceptable
• RoHS and regulatory compliance: Substitute parts must maintain equivalent compliance status

The 1N5358B-TP meets all substitution criteria with identical Zener voltage, tolerance, reverse leakage, and package configuration. The substitute provides enhanced power rating (5 W versus 2 W) and improved impedance characteristics (3.5 Ohms versus 12 Ohms), making it suitable for applications requiring higher power dissipation capability.

Parameter Comparison

Engineering Selection Recommendations

2M22ZH Selection Criteria:

• Applications requiring automotive-grade qualification (AEC-Q101)
• Designs with operating temperature requirements up to 175°C
• Circuits with 2 W maximum power dissipation specification
• Systems where higher impedance characteristics are acceptable

1N5358B-TP Selection Criteria:

• Applications requiring higher power dissipation (5 W capability)
• Designs benefiting from lower impedance characteristics (3.5 Ohms)
• Circuits operating within -55°C to 150°C temperature range
• Systems where automotive qualification is not mandatory

Both parts maintain active product status, ROHS3 compliance, and identical Zener voltage and tolerance specifications. Selection between these components depends on power dissipation requirements and maximum operating temperature constraints specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the 1N5358B-TP directly replace the 2M22ZH in all applications?

A: Direct replacement is possible when the application operates within the 1N5358B-TP temperature range (-55°C to 150°C) and does not require automotive AEC-Q101 qualification. The substitute provides superior power handling and lower impedance, making it suitable for higher-power applications with identical Zener voltage and tolerance specifications.

Q: What is the significance of the impedance difference between these parts?

A: The 1N5358B-TP impedance of 3.5 Ohms is lower than the 2M22ZH impedance of 12 Ohms. Lower impedance results in improved voltage regulation and reduced dynamic resistance, beneficial for applications requiring tighter voltage stability across varying load conditions.

Q: Are both parts mechanically compatible?

A: Yes. Both the 2M22ZH and 1N5358B-TP use identical DO-204AC (DO-15) axial through-hole packaging and mounting configuration, enabling direct physical substitution on printed circuit boards without layout modifications.

Q: What is the impact of the 5 W power rating on the 1N5358B-TP compared to the 2 W rating on the 2M22ZH?

A: The 1N5358B-TP can dissipate up to 5 W of power, compared to 2 W for the 2M22ZH. This higher rating allows the substitute to operate in applications with greater power dissipation requirements without thermal stress, provided the application circuit design supports this capability.

Q: Does the operating temperature range difference affect substitution suitability?

A: The 2M22ZH operates to 175°C while the 1N5358B-TP operates to 150°C. Applications requiring operation above 150°C must use the 2M22ZH. Applications within the 150°C limit can use either part.

Q: Are regulatory and compliance certifications equivalent between these parts?

A: Both parts are ROHS3 compliant and maintain active product status. The 2M22ZH carries AEC-Q101 automotive qualification; the 1N5358B-TP does not. Applications requiring automotive-grade components must specify the 2M22ZH.

Q: What is the reverse leakage current specification, and is it identical between parts?

A: Both parts specify 500 nA reverse leakage current at 16.7 V. This identical specification ensures equivalent leakage behavior in circuit applications, supporting direct functional substitution.