MMSZ4696-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The MMSZ4696-TP is a 9.1 V, 500 mW Zener diode manufactured by Micro Commercial Co in SOD-123 surface mount packaging. This component is classified as an active product and is RoHS3 compliant. Zener diodes in this voltage and power rating are used in voltage regulation, overvoltage protection, and reference circuits. Substitute parts are identified based on matching electrical specifications and package compatibility to ensure functional equivalence in circuit applications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	9.1	V
Tolerance	±5%	%
Power - Max	500	mW
Package / Case	SOD-123	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-55°C ~ 150°C	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of Zener diodes is determined by the following critical parameters:

Zener Voltage (Vz): All substitute parts maintain the nominal 9.1 V specification with ±5% tolerance, ensuring voltage regulation performance is preserved.
Power Dissipation (Pmax): All candidates are rated at 500 mW maximum power, matching the thermal design requirements of the original part.
Package and Mounting: All substitute parts use SOD-123 surface mount packaging, ensuring mechanical and electrical compatibility with existing PCB layouts.
Operating Temperature Range: Substitute parts operate within -55°C to 150°C or -65°C to 150°C, covering the original part's thermal envelope.
Compliance Standards: All parts are RoHS3 compliant, REACH unaffected, and carry EAR99 classification, maintaining regulatory equivalence.

Secondary parameters such as reverse leakage current, forward voltage, and impedance vary within acceptable ranges for this component category but do not prevent functional substitution.

Parameter Comparison

Parameter	MMSZ4696-TP (Micro Commercial Co)	DDZ9696-7 (Diodes Inc)	MMSZ4696T1G (onsemi)	MMSZ5239B-7-F (Diodes Inc)	SZMMSZ4696T1G (onsemi)
Voltage - Zener (Nom)	9.1 V	9.1 V	9.1 V	9.1 V	9.1 V
Tolerance	±5%	±5%	±5%	±5%	±5%
Power - Max	500 mW	500 mW	500 mW	500 mW	500 mW
Current - Reverse Leakage @ Vr	10 µA @ 6.9 V	100 nA @ 6.9 V	1 µA @ 6.9 V	3 µA @ 7 V	1 µA @ 6.9 V
Voltage - Forward (Vf) (Max) @ If	950 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature Range	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-55°C ~ 150°C
Package / Case	SOD-123	SOD-123	SOD-123	SOD-123	SOD-123
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All identified substitute parts are active products with full RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

DDZ9696-7 (Diodes Incorporated) provides the lowest reverse leakage current specification at 100 nA, suitable for applications requiring minimal standby current. This part is available in Tape & Reel packaging and operates across an extended temperature range of -65°C to 150°C.

MMSZ4696T1G (onsemi) shares the same base product number as the original part and offers reverse leakage of 1 µA with identical operating temperature range. This part is available in Cut Tape and Digi-Reel® packaging formats.

MMSZ5239B-7-F (Diodes Incorporated) operates across -65°C to 150°C and includes impedance specification of 10 Ohms maximum. This part is available in Cut Tape and Digi-Reel® packaging.

SZMMSZ4696T1G (onsemi) carries AEC-Q101 automotive qualification and is designated for automotive-grade applications. This part maintains Tape & Reel packaging and operates within -55°C to 150°C.

All substitute parts maintain the 9.1 V nominal voltage and 500 mW power rating required for functional equivalence. Selection should be based on packaging availability, temperature range requirements, and application-specific compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can MMSZ4696-TP be directly replaced with DDZ9696-7?

A: Yes. Both parts share identical nominal Zener voltage (9.1 V), tolerance (±5%), maximum power (500 mW), and SOD-123 surface mount package. The DDZ9696-7 operates across a wider temperature range (-65°C to 150°C) and exhibits lower reverse leakage current (100 nA vs. 10 µA).

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging supplies components on continuous tape wound on reels, suitable for high-volume automated assembly. Cut Tape and Digi-Reel® packaging provides components on tape segments or alternative reel formats. Both formats contain identical components; packaging selection depends on assembly equipment and order quantity requirements.

Q: Is SZMMSZ4696T1G suitable for automotive applications?

A: Yes. SZMMSZ4696T1G carries AEC-Q101 automotive qualification, designating it for automotive-grade use. The original MMSZ4696-TP does not carry this qualification. Selection of the automotive-qualified variant is required only if the application demands automotive-grade components.

Q: Do all substitute parts meet the same compliance standards as MMSZ4696-TP?

A: Yes. All substitute parts are RoHS3 compliant, REACH unaffected, and classified as EAR99. Compliance status is equivalent across all identified substitutes.

Q: What is the significance of reverse leakage current differences?

A: Reverse leakage current affects standby power consumption and circuit performance in low-current applications. DDZ9696-7 exhibits the lowest leakage (100 nA), while MMSZ4696-TP exhibits the highest (10 µA). Selection depends on application sensitivity to leakage current; for most voltage regulation applications, all variants are functionally equivalent.

Q: Can MMSZ4696T1G and SZMMSZ4696T1G be used interchangeably?

A: Both parts share identical electrical specifications and SOD-123 packaging. SZMMSZ4696T1G carries AEC-Q101 automotive qualification; MMSZ4696T1G does not. They are electrically interchangeable, but automotive applications require the qualified variant.

Q: What is the operating temperature range significance?

A: MMSZ4696-TP, MMSZ4696T1G, and SZMMSZ4696T1G operate from -55°C to 150°C. DDZ9696-7 and MMSZ5239B-7-F extend the lower limit to -65°C. Selection of extended-range parts is necessary only for applications requiring operation below -55°C.

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