Equivalent & Substitute Parts for MMSZ5237B Zener Diode

Part Overview

The Taiwan Semiconductor Corporation MMSZ5237B is a Zener Diode specified at 8.2 V, 500 mW, and ±5% tolerance, packaged in a SOD-123F surface-mount case. This component is categorized under Diodes, Zener, and features RoHS3 compliance and REACH unaffected status. It is active with 3300 pieces currently in stock. Identifying alternative models is necessary for maintaining supply continuity, design flexibility, or production scaling within the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	MMSZ5237B
Category	Diodes, Zener
Voltage - Zener (Nom) (Vz)	8.2 V
Tolerance	±5%
Power - Max	500 mW
Impedance (Max) (Zzt)	8 Ohms
Current - Reverse Leakage @ Vr	3 µA @ 6.5 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA
Operating Temperature	-65°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	SOD-123F
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8541.10.0050
Part Status	Active

Substitute Part Grouping Explanation

Substitute Zener diodes are grouped according to identical electrical and mechanical parameters, including Zener voltage, tolerance, power rating, impedance, reverse leakage current, forward voltage, SOD-123F surface-mount package, and compliance credentials. Only those substitutes with matching values for these parameters are listed as acceptable alternatives.

Parameter Comparison

Parameter	Main Part: MMSZ5237B	Substitute: MMSZ5237B RHG
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation
Category	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom) (Vz)	8.2 V	8.2 V
Tolerance	±5%	±5%
Power - Max	500 mW	500 mW
Impedance (Max) (Zzt)	8 Ohms	8 Ohms
Current - Reverse Leakage @ Vr	3 µA @ 6.5 V	3 µA @ 6.5 V
Operating Temperature	-65°C ~ 150°C (TJ)	-65°C ~ 150°C (TJ)
Mounting Type	Surface Mount	Surface Mount
Package / Case	SOD-123F	SOD-123F
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99
HTSUS	8541.10.0050	8541.10.0050
Part Status	Active	Active

Engineering Selection Recommendations

Both MMSZ5237B and MMSZ5237B RHG are classified as active parts, meet ROHS3 compliance, and are REACH unaffected. Both carry identical ECCN and HTSUS classifications and are available in SOD-123F surface-mount packaging from Taiwan Semiconductor Corporation within the Diodes, Zener category.

Frequently Asked Questions (FAQ)

Q: What criteria must be met for substituting a Zener diode in the same product category?
A: Substitution requires identical voltage rating, tolerance, power rating, impedance, reverse leakage current, forward voltage, package form factor, and mounting type.

Q: Can MMSZ5237B RHG be used as a drop-in replacement for MMSZ5237B?
A: Both parts share the same key electrical, mechanical, and compliance parameters, allowing direct substitution.

Q: Does the SOD-123F package ensure mechanical compatibility between these parts?
A: Both MMSZ5237B and MMSZ5237B RHG use the SOD-123F surface mount package, ensuring identical footprint and assembly compatibility.

Q: Are both parts compliant with RoHS and REACH requirements?
A: Both MMSZ5237B and MMSZ5237B RHG are ROHS3 compliant and REACH unaffected.

Q: Is there any difference in product status or supply chain classification between the main and substitute part?
A: Both are active and categorized under ECCN EAR99 and HTSUS 8541.10.0050.

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