2M47ZH Zener Diode Equivalent & Substitute Parts

Part Overview

The 2M47ZH is an active-status Zener diode manufactured by Taiwan Semiconductor Corporation, rated for 47 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. Substitute parts are identified when equivalent electrical parameters and mechanical compatibility exist, enabling component sourcing flexibility while maintaining circuit performance specifications.

Substiute Parts

2M47ZH

Taiwan Semiconductor CorporationIn Stock: 11522M47ZH Datasheet

Current PartRFQ

1N5368B-TP

Micro Commercial CoIn Stock: 43671N5368B-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2M47ZH is permissible when the alternative component meets the following criteria:

Critical Matching Parameters:

• Voltage - Zener (Nom): 47 V
• Tolerance: ±5%
• Current - Reverse Leakage @ Vr: 500 nA @ 35.8 V
• Mounting Type: Through Hole
• Package / Case: DO-204AC or DO-15 (Axial)
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Power - Max: Equal to or greater than 2 W
• Impedance (Max): Equal to or less than 40 Ohms
• Operating Temperature Range: Must encompass or exceed -55°C to 175°C

The 1N5368B-TP qualifies as a substitute part. While it exhibits higher maximum power dissipation (5 W versus 2 W) and lower impedance (25 Ohms versus 40 Ohms), these represent performance enhancements that do not compromise circuit compatibility. The Zener voltage, tolerance, reverse leakage current, mounting type, and package configuration remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

2M47ZH Selection Criteria:

• Applications requiring AEC-Q101 automotive qualification
• Circuits operating across the full temperature range of -55°C to 175°C
• Systems where automotive-grade certification is a mandatory requirement
• Designs with thermal constraints limiting power dissipation to 2 W

1N5368B-TP Selection Criteria:

• Applications where higher power dissipation capability (5 W) provides design margin
• Circuits operating within the -55°C to 150°C temperature range
• Non-automotive applications or systems where automotive qualification is not required
• Designs benefiting from lower impedance characteristics (25 Ohms)

Both components maintain active product status and ROHS3 compliance. The 2M47ZH retains automotive-grade qualification and extended upper temperature rating. The 1N5368B-TP offers enhanced power handling and lower impedance, suitable for applications where these characteristics provide operational advantage within the specified temperature envelope.

Frequently Asked Questions (FAQ)

Q: Can the 1N5368B-TP replace the 2M47ZH in automotive applications?

A: The 1N5368B-TP is not qualified to AEC-Q101 automotive standards. Use the 2M47ZH for applications requiring automotive-grade certification. The 1N5368B-TP is suitable for non-automotive circuits where automotive qualification is not specified.

Q: What is the impact of the 1N5368B-TP's higher power rating (5 W vs. 2 W)?

A: The higher power rating of the 1N5368B-TP indicates greater thermal dissipation capability. This does not affect circuit compatibility when the original design specifies 2 W maximum. The substitute provides additional thermal margin without altering Zener voltage regulation characteristics.

Q: Are the packages physically identical?

A: Both components use DO-204AC (DO-15) axial through-hole packaging. Physical dimensions and lead spacing are compatible for direct board-level substitution.

Q: Does the lower impedance of the 1N5368B-TP (25 Ohms vs. 40 Ohms) affect circuit performance?

A: Lower impedance represents improved dynamic response characteristics. This does not compromise compatibility with circuits designed for the 2M47ZH and typically provides enhanced voltage regulation stability.

Q: What is the significance of the operating temperature range difference?

A: The 2M47ZH operates to 175°C; the 1N5368B-TP operates to 150°C. For applications requiring operation above 150°C, the 2M47ZH is required. For applications within -55°C to 150°C, both components are suitable.

Q: Are both components RoHS compliant?

A: Yes. Both the 2M47ZH and 1N5368B-TP are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

Q: Can the 2M47ZH be used in place of the 1N5368B-TP?

A: Yes. The 2M47ZH meets all electrical and mechanical requirements of the 1N5368B-TP. The 2M47ZH provides automotive qualification and extended temperature range as additional benefits.