MAZ80430ML Equivalent & Substitute Parts

Part Overview

The MAZ80430ML is a Zener diode manufactured by Panasonic Electronic Components with a nominal Zener voltage of 4.3 V and maximum power dissipation of 150 mW. This component is packaged in the SMini2-F1 surface mount configuration (SC-90, SOD-323F). The part is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute components must maintain the 4.3 V Zener voltage specification while accommodating variations in power rating, tolerance, and package form factors.

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)	-
Product Status	Obsolete	-

Substitute Part Grouping Explanation

Substitution of the MAZ80430ML is determined by the following critical parameters:

Primary Matching Criteria:

Voltage - Zener (Nom): 4.3 V (exact match required)
Mounting Type: Surface Mount (all substitutes maintain this requirement)
Moisture Sensitivity Level: 1 (Unlimited) (all substitutes meet this specification)

Secondary Compatibility Factors:

Power - Max: Substitute parts may exceed the 150 mW rating of the original part, as higher power ratings provide design margin
Impedance (Max): Substitute parts with lower impedance values (90 Ohms vs. 130 Ohms) offer improved performance characteristics
Tolerance: Substitute parts with tighter tolerances (±2% to ±5%) provide enhanced voltage regulation accuracy compared to the ±7% specification of the MAZ80430ML
Package / Case: Substitute parts utilize compatible surface mount packages (SOD-123F, SOD-523, SOD-323F, TUMD2, UMD2) suitable for automated assembly

All identified substitute parts maintain the 4.3 V Zener voltage specification and surface mount configuration, ensuring functional compatibility in circuit applications.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Impedance (Ohms)	Reverse Leakage (µA @ 1V)	Vf (Max) @ If	Package	Product Status
MAZ80430ML	Panasonic	4.3	±7%	150	130	10	1 V @ 10 mA	SOD-323F	Obsolete
BZT52H-C4V3,115	NXP Semiconductors	4.3	±5%	375	95	3	900 mV @ 10 mA	SOD-123F	Active
BZX585-B4V3,115	Nexperia USA Inc.	4.3	±2%	300	90	3	1.1 V @ 100 mA	SOD-523	Active
BZX585-B4V3,135	Nexperia USA Inc.	4.3	±2%	300	90	3	1.1 V @ 100 mA	SOD-523	Active
BZX84J-C4V3,115	Nexperia USA Inc.	4.3	±5%	550	90	3	1.1 V @ 100 mA	SOD-323F	Active
SZMM3Z4V3ST1G	onsemi	4.3	-	300	90	3	900 mV @ 10 mA	SOD-323	Active
TFZGTR4.3B	Rohm Semiconductor	4.3	-	500	40	5	-	TUMD2	Active
UDZSTE-174.3B	Rohm Semiconductor	4.3	±3%	200	100	5	-	SOD-323F	Active
UDZVFHTE-174.3B	Rohm Semiconductor	4.3	±3.02%	200	100	5	-	SOD-323F	Active
UDZVTE-174.3B	Rohm Semiconductor	4.3	-	200	100	5	-	SOD-323F	Active

Engineering Selection Recommendations

Active Product Status Priority: All substitute parts listed maintain active product status with established supply chains and manufacturing continuity. The MAZ80430ML obsolete status necessitates transition to one of these active alternatives.

Compliance and Certification:

Automotive Grade Components: BZT52H-C4V3,115 (AEC-Q101), BZX585-B4V3,115 (AEC-Q100), BZX585-B4V3,135 (AEC-Q100), BZX84J-C4V3,115 (AEC-Q101), SZMM3Z4V3ST1G (AEC-Q101), and UDZVFHTE-174.3B (AEC-Q101) carry automotive-grade qualifications suitable for applications requiring enhanced reliability standards.
RoHS3 Compliance: All substitute parts except TFZGTR4.3B explicitly declare ROHS3 compliance status.
REACH Unaffected Status: All substitute parts maintain REACH unaffected status, ensuring regulatory compliance across global markets.

Package Compatibility Considerations:

SOD-323F Package Match: UDZSTE-174.3B, UDZVFHTE-174.3B, and UDZVTE-174.3B maintain the original SOD-323F package form factor, enabling direct board-level substitution with minimal layout modifications.
Alternative Surface Mount Packages: BZT52H-C4V3,115 (SOD-123F), BZX585-B4V3,115 and BZX585-B4V3,135 (SOD-523), BZX84J-C4V3,115 (SOD-323F), SZMM3Z4V3ST1G (SOD-323), and TFZGTR4.3B (TUMD2) require PCB layout evaluation for footprint compatibility.

Voltage Regulation Performance:

Tighter Tolerance Options: BZX585-B4V3,115 and BZX585-B4V3,135 offer ±2% tolerance, providing superior voltage regulation compared to the MAZ80430ML ±7% specification.
Moderate Tolerance Options: BZT52H-C4V3,115, BZX84J-C4V3,115, UDZSTE-174.3B, and UDZVFHTE-174.3B provide ±3% to ±5% tolerance ranges.

Power Dissipation Margin: All substitute parts exceed or match the 150 mW power rating of the original part, with options ranging from 200 mW (Rohm UMD2 series) to 550 mW (BZX84J-C4V3,115), providing design margin for thermal management.

Frequently Asked Questions (FAQ)

Q: Can the MAZ80430ML be directly replaced with any of the listed substitute parts?

A: Direct replacement depends on package compatibility. UDZSTE-174.3B, UDZVFHTE-174.3B, and UDZVTE-174.3B maintain the SOD-323F package and enable direct substitution. Other substitutes require PCB layout evaluation due to different package form factors (SOD-123F, SOD-523, TUMD2, SOD-323).

Q: What is the primary criterion for selecting a substitute part?

A: The Zener voltage specification of 4.3 V is the primary matching criterion. All listed substitutes maintain this exact voltage specification. Secondary selection criteria include package compatibility, power rating requirements, tolerance specifications, and compliance certifications.

Q: Are all substitute parts suitable for automotive applications?

A: Automotive-grade substitutes with AEC-Q101 or AEC-Q100 qualifications include BZT52H-C4V3,115, BZX585-B4V3,115, BZX585-B4V3,135, BZX84J-C4V3,115, SZMM3Z4V3ST1G, and UDZVFHTE-174.3B. Non-automotive-qualified substitutes include UDZSTE-174.3B, UDZVTE-174.3B, TFZGTR4.3B, and SZMM3Z4V3ST1G (verify application requirements).

Q: How do tolerance specifications affect part selection?

A: Tolerance specifications determine voltage regulation accuracy. The MAZ80430ML specifies ±7% tolerance. Substitute parts with tighter tolerances (±2% to ±5%) provide improved voltage stability and reduced circuit performance variation. Selection depends on circuit voltage regulation requirements.

Q: What is the significance of impedance values in the parameter comparison?

A: Impedance (Zzt) affects dynamic response characteristics. Lower impedance values (90 Ohms in BZX585 and BZX84J series) compared to the MAZ80430ML (130 Ohms) provide faster transient response and improved load regulation performance.

Q: Are there inventory considerations for substitute part selection?

A: Inventory availability varies across substitute parts. UDZSTE-174.3B (47,400 pcs), UDZVTE-174.3B (11,008 pcs), and SZMM3Z4V3ST1G (9,718 pcs) maintain substantial stock levels. BZX585-B4V3,135 (1,094 pcs) and UDZVFHTE-174.3B (7,054 pcs) have more limited availability.

Q: What package considerations apply when transitioning from MAZ80430ML?

A: The MAZ80430ML uses the SMini2-F1 package (SC-90, SOD-323F). Substitutes maintaining this package include Rohm UMD2 series parts. Alternative packages (SOD-123F, SOD-523, TUMD2, SOD-323) require PCB footprint verification and potential layout modifications. Consult PCB design guidelines for package-specific land pattern requirements.

Q: Do all substitute parts meet RoHS and REACH compliance requirements?

A: All substitute parts maintain REACH unaffected status. RoHS3 compliance is explicitly declared for all parts except TFZGTR4.3B. Verify specific regulatory requirements for your application jurisdiction.

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