MAZ30430ML Equivalent & Substitute Parts

Part Overview

The MAZ30430ML is a Zener diode manufactured by Panasonic Electronic Components, rated at 4.3 V nominal with 200 mW maximum power dissipation. This component is designed for surface mount applications in the TO-236-3 (SOT-23-3) package. The MAZ30430ML is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

MAZ30430ML

Panasonic Electronic ComponentsIn Stock: 760MAZ30430ML Datasheet

Current PartRFQ

BZX84-A4V3,215

NXP SemiconductorsIn Stock: 3979BZX84-A4V3,215 Datasheet

SimilarRFQ

BZX84C4V3LT1G

onsemiIn Stock: 59112BZX84C4V3LT1G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MAZ30430ML is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

• Zener voltage nominal rating: 4.3 V
• Package type: TO-236-3 / SOT-23-3 / SC-59 (identical physical form factor)
• Mounting technology: Surface Mount
• Forward voltage characteristic: 900 mV @ 10 mA
• Moisture sensitivity level: 1 (Unlimited)

Allowable Variation Parameters:

• Power dissipation: Substitute parts must equal or exceed 200 mW
• Zener voltage tolerance: ±7% or tighter
• Impedance: Lower impedance values are acceptable
• Reverse leakage current: Lower values are acceptable

Both identified substitute parts meet these criteria through identical zener voltage, package compatibility, and surface mount configuration, while offering equal or superior electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

BZX84-A4V3,215 (NXP Semiconductors)

This substitute offers superior electrical performance with tighter zener voltage tolerance (±1% versus ±7%), lower impedance (90 Ohms versus 130 Ohms), and reduced reverse leakage current (3 µA versus 10 µA). Power rating is increased to 250 mW. The part carries AEC-Q101 automotive qualification and operates across -65°C to 150°C. Product status is active with established supply chain availability. This option is suitable for applications requiring automotive-grade reliability and enhanced performance margins.

BZX84C4V3LT1G (onsemi)

This substitute maintains the original ±7% zener voltage tolerance while providing increased power dissipation (225 mW versus 200 mW) and improved impedance characteristics (90 Ohms versus 130 Ohms). Reverse leakage current is reduced to 3 µA. The part is RoHS3 compliant and REACH unaffected, with active product status and extensive inventory availability (59,010 units). Operating temperature range is -65°C to 150°C. This option provides direct functional equivalence with enhanced environmental compliance and superior supply continuity.

Both substitutes are electrically and mechanically compatible with the MAZ30430ML within the TO-236-3 package footprint and surface mount assembly process.

Frequently Asked Questions (FAQ)

Q: Can BZX84-A4V3,215 or BZX84C4V3LT1G be used as direct replacements for MAZ30430ML?

A: Yes. Both substitute parts share identical zener voltage (4.3 V), package type (TO-236-3 / SOT-23-3), mounting technology (surface mount), and forward voltage characteristics (900 mV @ 10 mA). Electrical performance is equal or superior across all specified parameters.

Q: What is the difference in zener voltage tolerance between the options?

A: The MAZ30430ML and BZX84C4V3LT1G both specify ±7% tolerance. The BZX84-A4V3,215 offers tighter tolerance at ±1%, providing more precise voltage regulation in applications sensitive to zener voltage variation.

Q: Are there power dissipation differences that affect circuit design?

A: The MAZ30430ML is rated at 200 mW. Both substitutes exceed this rating: BZX84-A4V3,215 at 250 mW and BZX84C4V3LT1G at 225 mW. Existing circuit designs require no modification; the higher power ratings provide additional thermal margin.

Q: Do the substitute parts fit the same PCB footprint?

A: Yes. All three parts use the TO-236-3 (SOT-23-3) package with identical physical dimensions and pin configuration. No PCB layout changes are required.

Q: What is the significance of the impedance difference?

A: The MAZ30430ML specifies 130 Ohms maximum impedance. Both substitutes reduce this to 90 Ohms, resulting in lower dynamic impedance and improved voltage regulation performance under transient conditions.

Q: Which substitute is recommended for new designs?

A: Selection depends on application requirements. For automotive applications requiring AEC-Q101 qualification, use BZX84-A4V3,215. For general industrial applications with RoHS3 compliance requirements and maximum supply availability, use BZX84C4V3LT1G.

Q: Are there compliance or certification differences?

A: The MAZ30430ML is RoHS non-compliant. BZX84C4V3LT1G is RoHS3 compliant and REACH unaffected. BZX84-A4V3,215 carries AEC-Q101 automotive qualification. Select based on end-product compliance requirements.

Q: What is the reverse leakage current significance?

A: The MAZ30430ML specifies 10 µA @ 1 V. Both substitutes reduce this to 3 µA, resulting in lower standby current consumption and improved circuit efficiency in applications with continuous reverse bias conditions.