2M24ZH Zener Diode Equivalent & Substitute Parts

Part Overview

The 2M24ZH is an active-status Zener diode manufactured by Taiwan Semiconductor Corporation, rated for 24 V nominal Zener voltage and 2 W maximum power dissipation. This component is packaged in DO-204AC (DO-15) axial through-hole configuration and qualifies for automotive applications under AEC-Q101 certification. Substitute parts are identified when equivalent electrical parameters and mechanical compatibility exist, enabling component sourcing flexibility while maintaining circuit performance specifications.

Substiute Parts

2M24ZH

Taiwan Semiconductor CorporationIn Stock: 10652M24ZH Datasheet

Current PartRFQ

1N5359B-TP

Micro Commercial CoIn Stock: 44901N5359B-TP Datasheet

SimilarRFQ

1N5360B-TP

Micro Commercial CoIn Stock: 47771N5360B-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2M24ZH is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage (Vz) matching at nominal rating
• Voltage tolerance (±5%) alignment
• Package compatibility (DO-204AC / DO-15 axial through-hole)
• Mounting type (through-hole)
• Reverse leakage current specification at reference voltage
• Operating temperature range coverage

Secondary Compatibility Factors:

• Power dissipation rating (equal or greater)
• Impedance characteristics
• Compliance certifications (RoHS3, REACH)
• Product status (active)

The identified substitute parts maintain electrical equivalence at the 24 V Zener voltage specification with matching tolerance and reverse leakage characteristics. Both substitute parts feature enhanced power ratings (5 W versus 2 W), lower impedance values, and identical package geometry, enabling direct mechanical and electrical substitution in through-hole PCB applications.

Parameter Comparison

Engineering Selection Recommendations

1N5359B-TP Selection Criteria: The 1N5359B-TP maintains exact Zener voltage equivalence at 24 V with matching ±5% tolerance and identical reverse leakage specification (500 nA @ 18.2 V). This part is suitable for applications where the 2M24ZH is specified and higher power dissipation capability (5 W versus 2 W) provides design margin. The reduced impedance (3.5 Ohms) improves voltage regulation characteristics. Operating temperature range (-55 to 150°C) covers standard industrial and automotive environments, though the upper limit is 25°C lower than the primary part. Both parts maintain ROHS3 compliance and active product status.

1N5360B-TP Selection Criteria: The 1N5360B-TP operates at 25 V nominal Zener voltage, representing a 1 V deviation from the 2M24ZH specification. This part is applicable only in circuit designs where 25 V Zener voltage is acceptable within system tolerance margins. The ±5% tolerance band (23.75 V to 26.25 V) overlaps with the 2M24ZH tolerance band (22.8 V to 25.2 V) at the upper range. Enhanced power rating (5 W) and lower impedance (4 Ohms) provide operational benefits. ROHS3 compliance and active status are maintained.

Compliance and Certification: All three parts maintain ROHS3 compliance, REACH unaffected status, and active product classification. The 2M24ZH carries automotive-grade qualification (AEC-Q101), while substitute parts do not explicitly list this certification in provided data.

Frequently Asked Questions (FAQ)

Q: Can 1N5359B-TP directly replace 2M24ZH in all applications? A: The 1N5359B-TP maintains identical Zener voltage (24 V), tolerance (±5%), and reverse leakage characteristics (500 nA @ 18.2 V). Both parts use DO-15 axial through-hole packaging. Direct substitution is supported for electrical and mechanical compatibility. The operating temperature range of 1N5359B-TP (-55 to 150°C) is narrower than 2M24ZH (-55 to 175°C); applications requiring operation above 150°C require the primary part.

Q: What is the significance of the 1 V difference between 2M24ZH and 1N5360B-TP? A: The 2M24ZH specifies 24 V nominal Zener voltage; 1N5360B-TP specifies 25 V. With ±5% tolerance, the 2M24ZH range is 22.8 V to 25.2 V, and 1N5360B-TP range is 23.75 V to 26.25 V. Substitution is valid only when circuit design permits 25 V Zener operation within system specifications. Voltage-sensitive applications require confirmation that the higher Zener voltage does not exceed maximum allowable regulation voltage.

Q: Why do substitute parts have higher power ratings? A: The 1N5359B-TP and 1N5360B-TP are rated for 5 W maximum power dissipation compared to 2M24ZH at 2 W. Higher power rating indicates enhanced thermal capability and does not require derating in applications designed for 2 W operation. This provides design margin and thermal stability.

Q: Are the impedance differences significant? A: The 2M24ZH specifies 13 Ohms maximum impedance; substitutes specify 3.5 Ohms (1N5359B-TP) and 4 Ohms (1N5360B-TP). Lower impedance improves voltage regulation and reduces output impedance variation across the operating current range. This represents an improvement in regulation characteristics.

Q: What packaging considerations apply to these parts? A: All three parts use DO-15 axial through-hole packaging. The 2M24ZH is supplied in Tape & Reel (TR) format; substitutes are supplied in Cut Tape (CT) format. Both formats are compatible with through-hole PCB assembly processes. Physical dimensions and lead spacing are identical across all three parts.

Q: Do substitute parts carry automotive qualification? A: The provided data indicates 2M24ZH carries AEC-Q101 automotive qualification. Automotive qualification status for 1N5359B-TP and 1N5360B-TP is not specified in the provided parameters. Applications requiring explicit AEC-Q101 certification should confirm qualification status with the manufacturer.

Q: Can these parts be used interchangeably in existing designs? A: Mechanical interchangeability is confirmed for all three parts (DO-15 axial through-hole). Electrical interchangeability depends on circuit requirements: 1N5359B-TP is electrically equivalent at 24 V; 1N5360B-TP requires design confirmation for 25 V operation. Temperature range differences must be evaluated for applications operating above 150°C.