MMSZ5V6CF Zener Diode Equivalent & Substitute Parts

Part Overview

The MMSZ5V6CF is a 5.6 V, 1 W surface mount zener diode manufactured by onsemi in SOD-123F packaging. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design requirements and procurement needs. The zener diode functions as a voltage regulation and protection device in electronic circuits, maintaining stable voltage across its terminals within specified operating parameters.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	5.6	V
Tolerance	±5	%
Power - Maximum	1	W
Impedance (Maximum)	4	Ohms
Current - Reverse Leakage @ Vr	10	µA @ 2 V
Voltage - Forward (Maximum) @ If	1.2	V @ 200 mA
Operating Temperature	150	°C (TJ)
Mounting Type	Surface Mount
Package / Case	SOD-123F
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the MMSZ5V6CF is determined by the following critical parameters: zener voltage (5.6 V nominal with ±5% tolerance), package type (SOD-123F surface mount), and compliance certifications (ROHS3). The identified substitute parts maintain the core zener voltage specification and surface mount packaging requirement.

Substitutes are grouped into two categories based on power dissipation capability:

Category 1: Reduced Power Rating (500 mW - 350 mW) These substitutes operate at lower maximum power levels than the original 1 W specification. Selection from this category requires circuit analysis to confirm that peak power dissipation does not exceed the substitute part's rating.

Category 2: Same Manufacturer, Different Package Variant The MMSZ5V6T1G maintains the onsemi manufacturer lineage with identical zener voltage but uses SOD-123 packaging instead of SOD-123F.

All substitute parts maintain the 5.6 V zener voltage specification, ±5% tolerance, surface mount mounting type, and ROHS3 compliance status.

Parameter Comparison

Parameter	MMSZ5V6CF (Main)	MMSZ5V6T1G	ACZRM5232B-HF	ACZRW5232B-G
Manufacturer	onsemi	onsemi	Comchip Technology	Comchip Technology
Voltage - Zener (Nom)	5.6 V	5.6 V	5.6 V	5.6 V
Tolerance	±5%	±5%	±5%	±5%
Power - Max	1 W	500 mW	500 mW	350 mW
Impedance (Max)	4 Ohms	40 Ohms	11 Ohms	11 Ohms
Current - Reverse Leakage @ Vr	10 µA @ 2 V	1 µA @ 2 V	5 µA @ 3 V	5 µA @ 3 V
Voltage - Forward (Max) @ If	1.2 V @ 200 mA	900 mV @ 10 mA	Not Specified	900 mV @ 10 mA
Operating Temperature Range	Up to 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C
Package / Case	SOD-123F	SOD-123	SOD-123F	SOD-123F
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Grade	Standard	Standard	Automotive	Automotive
Qualification	Not Specified	Not Specified	AEC-Q101	AEC-Q101

Engineering Selection Recommendations

MMSZ5V6T1G (onsemi) This substitute maintains the onsemi manufacturer lineage and active product status. It is suitable for applications where the 500 mW power rating is sufficient. The primary consideration is the package transition from SOD-123F to SOD-123, which requires PCB layout verification for mechanical compatibility. This part offers the lowest impedance variation from the original specification at 40 Ohms maximum.

ACZRM5232B-HF (Comchip Technology) This substitute provides automotive-grade qualification (AEC-Q101) with active product status. It maintains SOD-123F packaging compatibility with the original part. The 500 mW power rating requires circuit analysis to confirm suitability. The impedance specification of 11 Ohms represents a significant increase from the original 4 Ohms, which may affect circuit performance in applications sensitive to zener impedance characteristics.

ACZRW5232B-G (Comchip Technology) This substitute also provides automotive-grade qualification (AEC-Q101) with active product status and SOD-123F packaging compatibility. The 350 mW power rating is the most restrictive among substitutes and requires careful circuit analysis. The extended operating temperature range (-65°C to 150°C) provides broader environmental coverage compared to the original specification. The impedance specification of 11 Ohms applies the same consideration as ACZRM5232B-HF.

Selection between substitutes depends on: (1) circuit power dissipation requirements, (2) impedance sensitivity in the application, (3) packaging constraints, and (4) automotive qualification requirements if applicable.

Frequently Asked Questions (FAQ)

Q: Can MMSZ5V6T1G be used as a direct replacement for MMSZ5V6CF?

A: MMSZ5V6T1G maintains identical zener voltage (5.6 V) and tolerance (±5%), but differs in package type (SOD-123 versus SOD-123F) and power rating (500 mW versus 1 W). Direct substitution requires verification that circuit power dissipation does not exceed 500 mW and that PCB layout accommodates SOD-123 footprint dimensions.

Q: What is the primary difference between ACZRM5232B-HF and ACZRW5232B-G?

A: Both parts are Comchip Technology automotive-grade zener diodes with 5.6 V specification and AEC-Q101 qualification. The primary differences are power rating (500 mW versus 350 mW) and operating temperature range (-55°C to 150°C versus -65°C to 150°C). Selection depends on circuit power requirements and minimum operating temperature specification.

Q: Why does MMSZ5V6T1G have higher impedance (40 Ohms) than the original MMSZ5V6CF (4 Ohms)?

A: Impedance variation is a characteristic of different zener diode designs and manufacturing processes. The higher impedance of MMSZ5V6T1G may affect voltage regulation performance in applications with variable load currents. Circuit analysis is required to determine if this impedance increase is acceptable for the specific application.

Q: Are the Comchip Technology substitutes suitable for automotive applications?

A: ACZRM5232B-HF and ACZRW5232B-G both carry automotive-grade designation with AEC-Q101 qualification. These parts are suitable for automotive applications. The original MMSZ5V6CF does not specify automotive qualification.

Q: What is the impact of reduced power rating on circuit design?

A: Substitutes with reduced power ratings (500 mW or 350 mW versus 1 W) require circuit analysis to confirm that peak power dissipation during normal operation and fault conditions does not exceed the substitute part's maximum rating. Exceeding the power rating will result in device failure and loss of circuit protection function.

Q: Can SOD-123 and SOD-123F packages be used interchangeably on the same PCB?

A: SOD-123 and SOD-123F are distinct package types with different physical dimensions and footprints. They cannot be used interchangeably without PCB redesign. Verify footprint compatibility before selecting MMSZ5V6T1G as a substitute.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts maintain ROHS3 compliance status, matching the original MMSZ5V6CF specification. REACH status is unaffected for all parts. Comchip Technology substitutes additionally carry AEC-Q101 automotive qualification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message