Equivalent & Substitute Parts for 2M14Z Zener Diode

Part Overview

The 2M14Z is an active-status Zener diode manufactured by Taiwan Semiconductor Corporation, rated at 14 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 RoHS3 compliant. The 2M14Z serves voltage regulation and protection applications in electronic circuits. Substitute parts are identified based on matching electrical parameters, package compatibility, and operational specifications to ensure functional equivalence in circuit applications.

Substiute Parts

2M14Z

Taiwan Semiconductor CorporationIn Stock: 9492M14Z Datasheet

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1N5350B-TP

Micro Commercial CoIn Stock: 53071N5350B-TP Datasheet

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1N5351B-TP

Micro Commercial CoIn Stock: 52311N5351B-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 2M14Z are identified based on the following critical parameters:

Zener Voltage (Vz): The nominal Zener voltage must match the application requirement. The 2M14Z operates at 14 V nominal. Substitute 1N5351B-TP maintains this 14 V specification, ensuring identical voltage regulation characteristics.

Tolerance: All identified substitutes maintain ±5% tolerance, consistent with the main part specification.

Package and Mounting: All substitute parts utilize DO-15 axial through-hole packaging, compatible with the 2M14Z footprint and mounting methodology.

Compliance and Status: All substitute parts are active-status components with RoHS3 compliance, MSL Level 1, and REACH unaffected status, matching the regulatory profile of the main part.

Power Rating Consideration: While substitute 1N5351B-TP provides 5 W maximum power (exceeding the 2 W specification of 2M14Z), this represents a higher-rated alternative suitable for applications requiring enhanced thermal performance or higher power dissipation margins.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 1N5351B-TP

The 1N5351B-TP is the direct functional equivalent for the 2M14Z. Both components specify 14 V nominal Zener voltage with ±5% tolerance. The 1N5351B-TP provides enhanced power dissipation capability at 5 W, offering improved thermal margin in applications where the 2 W rating of the 2M14Z approaches maximum design limits. Both parts maintain RoHS3 compliance, MSL Level 1 rating, and REACH unaffected status. The operating temperature range of 1N5351B-TP extends to 150°C, which is lower than the 2M14Z specification of 175°C; this difference is relevant only for applications requiring sustained operation above 150°C.

Secondary Substitute: 1N5350B-TP

The 1N5350B-TP operates at 13 V nominal Zener voltage, representing a 1 V deviation from the 2M14Z specification. This substitute is applicable only in applications where 13 V regulation is functionally acceptable or where circuit design permits voltage tolerance adjustment. The 1N5350B-TP provides 5 W power rating and maintains full compliance with RoHS3, MSL Level 1, and REACH requirements.

All substitute parts are active-status components with confirmed inventory availability and identical packaging specifications, ensuring direct mechanical and electrical compatibility within the specified parameter ranges.

Frequently Asked Questions (FAQ)

Q: Can 1N5351B-TP directly replace 2M14Z in all applications?

A: The 1N5351B-TP provides direct functional substitution for the 2M14Z based on matching 14 V Zener voltage specification and ±5% tolerance. Both components utilize identical DO-15 axial through-hole packaging. The primary difference is the maximum power rating: 1N5351B-TP is rated at 5 W versus 2 W for the 2M14Z. Applications operating within the 2 W power envelope will function identically with either component. Applications requiring higher power dissipation benefit from the 1N5351B-TP rating.

Q: What is the significance of the operating temperature range difference between 2M14Z and 1N5351B-TP?

A: The 2M14Z specifies -55°C to 175°C operating range, while 1N5351B-TP specifies -55°C to 150°C. For applications operating continuously above 150°C, the 2M14Z is required. For applications within -55°C to 150°C, both components are functionally equivalent.

Q: Why is 1N5350B-TP listed as a substitute if it has 13 V instead of 14 V?

A: The 1N5350B-TP is provided as a substitute option for applications where 13 V regulation is functionally acceptable or where circuit design tolerances permit a 1 V deviation. This component shares identical packaging, compliance status, and power rating advantages with 1N5351B-TP. Selection of 1N5350B-TP requires confirmation that the application circuit design accommodates 13 V operation.

Q: Are all substitute parts available in the same packaging format?

A: Yes. The 2M14Z, 1N5350B-TP, and 1N5351B-TP all utilize DO-15 axial through-hole packaging. All three components are mechanically and electrically compatible for direct board-level substitution without layout modification.

Q: Do all parts meet the same regulatory and compliance requirements?

A: Yes. The 2M14Z and both substitute parts are RoHS3 compliant, carry MSL Level 1 rating (unlimited moisture sensitivity), and maintain REACH unaffected status. All components are classified under ECCN EAR99 and HTSUS 8541.10.0050.

Q: What is the impedance difference between the main part and substitutes?

A: The 2M14Z specifies maximum impedance of 5.5 Ohms, while both 1N5350B-TP and 1N5351B-TP specify 2.5 Ohms maximum impedance. Lower impedance in the substitute parts results in improved voltage regulation stability and reduced output impedance in voltage regulation circuits.