2M17ZH Zener Diode Equivalent & Substitute Parts

Part Overview

The 2M17ZH is an active-status Zener diode manufactured by Taiwan Semiconductor Corporation, rated for 17 V nominal Zener voltage and 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. Substitute parts are identified when equivalent electrical parameters and mechanical compatibility exist, enabling component sourcing flexibility while maintaining circuit performance specifications.

Substiute Parts

2M17ZH

Taiwan Semiconductor CorporationIn Stock: 11592M17ZH Datasheet

Current PartRFQ

1N5354B-TP

Micro Commercial CoIn Stock: 49091N5354B-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2M17ZH is permissible when the following electrical and mechanical criteria are satisfied:

Primary Substitution Criteria:

• Zener voltage (Nom): 17 V (matching nominal value)
• Tolerance: ±5% (matching tolerance specification)
• Package / Case: DO-204AC or DO-15 axial configuration (mechanical compatibility)
• Mounting Type: Through Hole (board assembly compatibility)
• Reverse leakage current: 500 nA specification at reference voltage

Secondary Compatibility Factors:

• Power rating: Equal to or greater than 2 W (allows higher-rated alternatives)
• Impedance: Lower impedance values indicate improved performance characteristics
• Operating temperature range: Minimum -55°C to 175°C coverage required for automotive applications
• Regulatory compliance: RoHS3 and REACH status alignment

The substitute part 1N5354B-TP meets all primary criteria with identical Zener voltage, tolerance, and package configuration. The higher power rating (5 W) and lower impedance (2.5 Ohms) represent performance enhancements over the main part specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (2M17ZH): The 2M17ZH is the specified component for applications requiring AEC-Q101 automotive qualification with a 2 W power rating. This part maintains active product status and is available in high inventory volume (1117 pcs). Selection is appropriate for designs with established thermal management and power dissipation budgets aligned to 2 W operation.

Substitute Selection (1N5354B-TP): The 1N5354B-TP is a direct electrical substitute with identical Zener voltage and tolerance specifications. The higher power rating (5 W) and lower impedance (2.5 Ohms) provide enhanced performance margin in applications where thermal headroom or transient response improvement is beneficial. This part is available in higher inventory volume (4813 pcs) and maintains ROHS3 compliance. The operating temperature range extends to 150°C (versus 175°C for the main part), which is acceptable for most automotive and industrial applications. Packaging format differs (Cut Tape versus Tape & Reel), requiring verification of procurement and assembly process compatibility.

Compliance Alignment: Both parts maintain ROHS3 compliance, REACH unaffected status, and EAR99 export classification. Regulatory and environmental requirements are satisfied by either selection.

Frequently Asked Questions (FAQ)

Q: Can 1N5354B-TP directly replace 2M17ZH in existing designs?

A: Yes, provided the following conditions are met: (1) The circuit board layout accommodates DO-15 axial package orientation; (2) The procurement and assembly process accepts Cut Tape packaging format; (3) The maximum operating temperature requirement does not exceed 150°C; (4) The higher power rating (5 W) does not introduce thermal or electrical interference in the application. The identical Zener voltage (17 V) and tolerance (±5%) ensure functional equivalence.

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

A: The 1N5354B-TP impedance of 2.5 Ohms is lower than the 2M17ZH impedance of 9 Ohms. Lower impedance indicates reduced dynamic resistance and improved voltage regulation performance under transient load conditions. This characteristic is beneficial in applications requiring fast response to current changes but does not prevent substitution in designs specified for the higher impedance value.

Q: Are there packaging considerations for substitution?

A: Yes. The 2M17ZH is supplied in Tape & Reel (TR) format, while 1N5354B-TP is supplied in Cut Tape (CT) format. These packaging formats require different handling, storage, and assembly equipment. Verify that the receiving facility and assembly process support Cut Tape component processing before selecting 1N5354B-TP.

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

A: The 1N5354B-TP maximum operating temperature is 150°C, compared to 175°C for the 2M17ZH. For applications where the junction temperature remains below 150°C, substitution is valid. Applications requiring sustained operation above 150°C require the 2M17ZH to maintain specification compliance.

Q: Is AEC-Q101 qualification required for the substitute part?

A: The provided data does not specify AEC-Q101 qualification for 1N5354B-TP. If automotive qualification is a mandatory design requirement, verify AEC-Q101 status with the manufacturer before substitution. The 2M17ZH explicitly carries AEC-Q101 qualification.

Q: What is the reverse leakage current specification difference?

A: Both parts specify 500 nA reverse leakage current at slightly different reference voltages (13 V for 2M17ZH, 12.9 V for 1N5354B-TP). This difference is negligible for practical circuit design and does not affect substitution eligibility.