MAZ80510ML Equivalent & Substitute Parts

Part Overview

The MAZ80510ML is a Zener diode manufactured by Panasonic Electronic Components, rated at 5.1 V nominal with 150 mW maximum power dissipation in a SMini2-F1 surface mount package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives from active manufacturers. Substitute parts must maintain the core electrical characteristics—5.1 V Zener voltage, surface mount configuration, and compatible package footprints—while accommodating variations in power rating, tolerance, and thermal specifications based on application requirements.

Key Parameters

Parameter	MAZ80510ML Value	Unit
Voltage - Zener (Nom)	5.1	V
Tolerance	±6%	%
Power - Max	150	mW
Impedance (Max)	60	Ohms
Current - Reverse Leakage @ Vr	1	µA @ 2 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 MAZ80510ML is determined by strict adherence to the following electrical and mechanical parameters:

Primary Matching Criteria:

Zener voltage: 5.1 V nominal (tolerance variations acceptable within application circuit design margins)
Mounting type: Surface mount configuration required
Package compatibility: SC-90 or SOD-323F footprints, or equivalent mechanical dimensions
Impedance (Zzt): Maximum 60 Ohms or higher (higher impedance acceptable for most applications)
Moisture sensitivity: MSL 1 (Unlimited) preferred for manufacturing compatibility

Secondary Considerations:

Power rating: Minimum 150 mW; higher ratings provide design margin and thermal headroom
Reverse leakage current: Specified at rated voltage; variations acceptable within circuit tolerance
Forward voltage: Specified at rated current; minor variations acceptable
Operating temperature range: Must encompass application requirements

All substitute parts listed maintain 5.1 V Zener voltage and surface mount configuration. Variations in power dissipation, tolerance, and package designation reflect active product availability and manufacturing standards from qualified suppliers.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Tolerance (%)	Power (mW)	Zzt (Ohms)	Ir @ Vr (µA)	Package	Status
MAZ80510ML	Panasonic	5.1	±6	150	60	1 @ 2V	SC-90, SOD-323F	Obsolete
BZT52H-C5V1,115	Nexperia USA Inc.	5.1	±5	375	60	2 @ 2V	SOD-123F	Active
BZX84J-C5V1,115	Nexperia USA Inc.	5.1	±5	550	60	2 @ 2V	SC-90, SOD-323F	Active
MM3Z5V1ST1G	onsemi	5.1	±2	300	60	2 @ 2V	SC-76, SOD-323	Active
PZU5.1B2,115	Nexperia USA Inc.	5.1	±2	310	60	2 @ 1.5V	SC-90, SOD-323F	Active
TDZTR5.1	Rohm Semiconductor	5.1	±10	500	—	10 @ 1.5V	2-SMD, Flat Lead	Active
UDZSTE-175.1B	Rohm Semiconductor	5.1	±2	200	80	2 @ 1.5V	SC-90, SOD-323F	Active
UDZVFHTE-175.1B	Rohm Semiconductor	5.09	±2.16	200	80	2 @ 1.5V	SC-90, SOD-323F	Active
UDZVTE-175.1B	Rohm Semiconductor	5.1	—	200	80	2 @ 1.5V	SC-90, SOD-323F	Active

Engineering Selection Recommendations

Direct Package Footprint Compatibility:

The BZX84J-C5V1,115 (Nexperia) and PZU5.1B2,115 (Nexperia) provide the closest mechanical compatibility with the MAZ80510ML, both utilizing SC-90 and SOD-323F package designations. The BZX84J-C5V1,115 offers 550 mW power rating with ±5% tolerance and AEC-Q101 automotive qualification. The PZU5.1B2,115 provides 310 mW with tighter ±2% tolerance and AEC-Q100 automotive qualification.

Alternative Package Compatibility:

The UDZSTE-175.1B and UDZVTE-175.1B (Rohm Semiconductor) maintain SC-90 and SOD-323F package compatibility with 200 mW power rating and ±2% tolerance. These parts are suitable for applications where the original 150 mW specification provides adequate margin. The UDZVFHTE-175.1B variant offers automotive-grade qualification (AEC-Q101) with 5.09 V nominal Zener voltage, acceptable for applications tolerating ±2.16% voltage variation.

Higher Power Alternatives:

The MM3Z5V1ST1G (onsemi) delivers 300 mW with ±2% tolerance in SOD-323 package, providing enhanced thermal performance. The TDZTR5.1 (Rohm Semiconductor) offers 500 mW in TUMD2 package with ±10% tolerance, suitable for applications requiring significant power dissipation margin but tolerating wider voltage tolerance.

Compliance and Qualification:

All substitute parts maintain MSL 1 (Unlimited) moisture sensitivity and RoHS3 compliance. Nexperia and Rohm parts with AEC-Q100 or AEC-Q101 qualification are suitable for automotive and industrial applications requiring formal qualification documentation.

Frequently Asked Questions (FAQ)

Q: Can the BZX84J-C5V1,115 directly replace the MAZ80510ML?

A: Yes. Both parts maintain 5.1 V Zener voltage, 60 Ohm maximum impedance, and compatible SC-90/SOD-323F package footprints. The BZX84J-C5V1,115 provides higher power rating (550 mW vs. 150 mW) and tighter tolerance (±5% vs. ±6%), making it functionally equivalent with improved performance margin.

Q: What is the difference between PZU5.1B2,115 and UDZSTE-175.1B?

A: Both parts maintain 5.1 V Zener voltage and SC-90/SOD-323F package compatibility. The PZU5.1B2,115 (Nexperia) provides 310 mW power rating with ±2% tolerance and AEC-Q100 qualification. The UDZSTE-175.1B (Rohm) provides 200 mW power rating with ±2% tolerance. Selection depends on power dissipation requirements and preferred supplier qualification status.

Q: Is the MM3Z5V1ST1G compatible with the original MAZ80510ML footprint?

A: The MM3Z5V1ST1G uses SOD-323 package (SC-76 designation), which is mechanically compatible with SOD-323F footprints. Verify PCB layout compatibility with your design. The part maintains 5.1 V Zener voltage and 60 Ohm impedance, ensuring electrical equivalence.

Q: Why do some substitute parts have higher impedance (80 Ohms vs. 60 Ohms)?

A: Impedance variation reflects manufacturing process differences between suppliers. Higher impedance (80 Ohms) remains acceptable for most circuit applications, as it represents a minor deviation from the original 60 Ohm specification. Verify impedance impact on circuit regulation performance if operating near maximum current limits.

Q: Can the UDZVFHTE-175.1B be used if the circuit requires exactly 5.1 V?

A: The UDZVFHTE-175.1B nominal Zener voltage is 5.09 V with ±2.16% tolerance, resulting in a range of approximately 4.98 V to 5.20 V. This is acceptable for most applications tolerating ±2% to ±3% voltage variation. Verify circuit tolerance specifications before selection.

Q: What is the advantage of selecting an AEC-Q101 qualified part?

A: AEC-Q101 qualification indicates the part meets automotive industry reliability and qualification standards. Selection of qualified parts (BZT52H-C5V1,115, BZX84J-C5V1,115, UDZVFHTE-175.1B) is required for automotive applications and provides documented reliability data for industrial and mission-critical applications.

Q: Is the TDZTR5.1 suitable for direct replacement?

A: The TDZTR5.1 maintains 5.1 V Zener voltage but uses TUMD2 package (2-SMD, Flat Lead), which differs from the original SC-90/SOD-323F footprint. This part is suitable only if PCB layout can accommodate the alternative package. The ±10% tolerance is wider than the original ±6%, requiring circuit tolerance verification.

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