MAZ8043GML Equivalent & Substitute Parts

Part Overview

The MAZ8043GML is a Zener diode manufactured by Panasonic Electronic Components, rated at 4.3 V nominal with 150 mW maximum power dissipation in a surface mount SMini2-F3 package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives from active manufacturers. Substitute parts must maintain the 4.3 V Zener voltage specification while accommodating variations in power rating, tolerance, and package form factors suitable for surface mount assembly.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	4.3	V
Tolerance	±7%	%
Power - Max	150	mW
Impedance (Max)	130	Ohms
Current - Reverse Leakage @ Vr	10	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1	V @ 10 mA
Mounting Type	Surface Mount	—
Package / Case	SC-90, SOD-323F	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the MAZ8043GML is determined by the following critical parameters:

Primary Matching Criteria:

Voltage - Zener (Nom): 4.3 V (exact match required)
Mounting Type: Surface Mount (required)
Moisture Sensitivity Level: 1 (Unlimited) (required)

Secondary Compatibility Factors:

Power - Max: Substitute must equal or exceed 150 mW
Impedance (Max): Lower impedance values indicate improved performance characteristics
Current - Reverse Leakage @ Vr: Lower leakage indicates superior device quality
Voltage - Forward (Vf): Forward voltage characteristics must be compatible with circuit requirements
Package / Case: Physical form factor must accommodate PCB layout constraints

All identified substitute parts maintain the 4.3 V Zener voltage specification and surface mount mounting type. Substitute parts are available from active manufacturers (NXP Semiconductors, Nexperia USA Inc., and onsemi) with current product status and full inventory availability.

Parameter Comparison

Parameter	MAZ8043GML	BZT52H-C4V3,115	BZX585-B4V3,115	BZX585-B4V3,135	BZX84J-C4V3,115	MM3Z4V3ST1G
Manufacturer	Panasonic	NXP Semiconductors	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	onsemi
Product Status	Obsolete	Active	Active	Active	Active	Active
Voltage - Zener (Nom)	4.3 V	4.3 V	4.3 V	4.3 V	4.3 V	4.3 V
Tolerance	±7%	±5%	±2%	±2%	±5%	±3%
Power - Max	150 mW	375 mW	300 mW	300 mW	550 mW	300 mW
Impedance (Max)	130 Ohms	95 Ohms	90 Ohms	90 Ohms	90 Ohms	90 Ohms
Current - Reverse Leakage @ Vr	10 µA @ 1 V	3 µA @ 1 V	3 µA @ 1 V	3 µA @ 1 V	3 µA @ 1 V	3 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1 V @ 10 mA	900 mV @ 10 mA	1.1 V @ 100 mA	1.1 V @ 100 mA	1.1 V @ 100 mA	900 mV @ 10 mA
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-90, SOD-323F	SOD-123F	SC-79, SOD-523	SC-79, SOD-523	SC-90, SOD-323F	SC-76, SOD-323
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

BZX84J-C4V3,115 is the primary substitute for MAZ8043GML applications. This Nexperia part maintains identical package form factor (SC-90, SOD-323F), matching the original component's physical footprint. The BZX84J-C4V3,115 provides 550 mW maximum power dissipation, exceeding the original 150 mW specification. The part carries AEC-Q101 automotive qualification and is ROHS3 compliant. Current inventory status is active with 3,488 units available.

MM3Z4V3ST1G from onsemi serves as an alternative substitute with SOD-323 package compatibility. This part delivers 300 mW power rating with ±3% tolerance and maintains active product status. The MM3Z4V3ST1G is ROHS3 compliant with 80,100 units in current inventory.

BZX585-B4V3,115 and BZX585-B4V3,135 are functionally equivalent Nexperia parts offering 300 mW power dissipation in SOD-523 package. These parts feature ±2% tolerance and AEC-Q100 automotive qualification. Package form factor differs from the original, requiring PCB layout verification. Both variants are ROHS3 compliant and actively produced.

BZT52H-C4V3,115 from NXP Semiconductors provides 375 mW power rating in SOD-123F package with ±5% tolerance and AEC-Q101 automotive qualification. This part is ROHS3 compliant with 103,725 units in inventory. Package form factor differs from the original component.

All substitute parts maintain the 4.3 V Zener voltage specification, surface mount mounting type, and MSL 1 moisture sensitivity rating. Selection between alternatives depends on package compatibility with existing PCB designs and power dissipation requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can BZX84J-C4V3,115 directly replace MAZ8043GML without PCB modification?

A: Yes. Both components use SC-90 and SOD-323F package designations, providing identical physical footprints and pin configurations. No PCB layout changes are required for this substitution.

Q: What is the significance of the ±2% tolerance in BZX585-B4V3 variants compared to the original ±7% tolerance?

A: The BZX585-B4V3 series provides tighter Zener voltage tolerance, resulting in more precise voltage regulation. This represents an improvement over the original specification and is compatible with applications requiring the original tolerance.

Q: Are the SOD-523 packaged alternatives (BZX585-B4V3,115 and BZX585-B4V3,135) physically compatible with MAZ8043GML footprints?

A: No. SOD-523 package dimensions differ from SC-90/SOD-323F. PCB layout verification and potential footprint modification are required before implementing these substitutes.

Q: What does AEC-Q101 and AEC-Q100 qualification indicate?

A: These certifications confirm automotive-grade reliability testing. AEC-Q101 applies to discrete semiconductors including Zener diodes. AEC-Q100 applies to semiconductor devices. Both qualifications indicate suitability for automotive applications with enhanced reliability requirements.

Q: Can MM3Z4V3ST1G be used in applications originally designed for MAZ8043GML?

A: Yes. The MM3Z4V3ST1G maintains 4.3 V Zener voltage, surface mount configuration, and SOD-323 package compatibility. The ±3% tolerance is superior to the original ±7% specification.

Q: What is the impact of lower reverse leakage current in substitute parts?

A: All substitute parts specify 3 µA reverse leakage at 1 V, compared to the original 10 µA specification. Lower leakage current indicates reduced standby power consumption and improved device performance characteristics.

Q: Do all substitute parts comply with RoHS3 requirements?

A: Yes. All identified substitute parts carry ROHS3 compliance certification and REACH unaffected status, meeting current environmental and regulatory requirements.

Q: How does impedance variation affect circuit performance?

A: Substitute parts feature impedance values between 90 and 95 Ohms, compared to the original 130 Ohms. Lower impedance provides improved transient response and voltage regulation characteristics, representing a performance enhancement over the original specification.

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