MAZ80680ML Equivalent & Substitute Parts

Part Overview

The MAZ80680ML is a 6.8 V Zener diode manufactured by Panasonic Electronic Components, rated for 150 mW power dissipation in a surface mount SMini2-F1 package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates with ±6% voltage tolerance and features a maximum impedance of 20 Ohms. Substitute parts must maintain the 6.8 V nominal zener voltage while accommodating variations in power rating, package type, and electrical characteristics based on application requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	6.8	V
Tolerance	±6%	-
Power - Max	150	mW
Impedance (Max)	20	Ohms
Current - Reverse Leakage @ Vr	100 nA @ 4 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 MAZ80680ML is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - Zener (Nom): Must be 6.8 V or 6.79 V (within manufacturing tolerance)
Mounting Type: Surface Mount required
Package Compatibility: SC-90, SOD-323F, or equivalent footprints

Secondary Substitution Criteria:

Power - Max: Substitute parts rated at 150 mW or higher are acceptable
Impedance (Max): Values of 20 Ohms or lower are preferred
Current - Reverse Leakage: Lower values indicate better performance
Voltage - Forward (Vf): Values at or below 1 V @ 10 mA are acceptable
Tolerance: ±6% or tighter tolerance is acceptable
Moisture Sensitivity Level: MSL 1 (Unlimited) required

Substitute parts are grouped based on power rating capability and package type. Parts with higher power ratings (200 mW to 550 mW) provide design margin for applications requiring increased thermal headroom. All listed substitutes maintain the 6.8 V nominal zener voltage and surface mount configuration.

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Impedance (Max)	Package	Status
MAZ80680ML	Panasonic	6.8 V	±6%	150 mW	20 Ω	SC-90, SOD-323F	Obsolete
BZT52H-C6V8,115	NXP Semiconductors	6.8 V	±5%	375 mW	8 Ω	SOD-123F	Active
BZX84J-B6V8,115	Nexperia USA Inc.	6.8 V	±2%	550 mW	15 Ω	SC-90, SOD-323F	Active
BZX84J-C6V8,115	Nexperia USA Inc.	6.8 V	±5%	550 mW	15 Ω	SC-90, SOD-323F	Active
MM3Z6V8ST1G	onsemi	6.8 V	±2%	300 mW	15 Ω	SC-76, SOD-323	Active
PZU6.8B2,115	Nexperia USA Inc.	6.8 V	±2%	310 mW	20 Ω	SC-90, SOD-323F	Active
TDZTR6.8	Rohm Semiconductor	6.8 V	±10%	500 mW	-	2-SMD, Flat Lead	Active
UDZSTE-176.8B	Rohm Semiconductor	6.8 V	±2%	200 mW	40 Ω	SC-90, SOD-323F	Active
UDZVFHTE-176.8B	Rohm Semiconductor	6.79 V	±2.06%	200 mW	40 Ω	SC-90, SOD-323F	Active
UDZVTE-176.8B	Rohm Semiconductor	6.8 V	-	200 mW	40 Ω	SC-90, SOD-323F	Active

Engineering Selection Recommendations

Direct Package Compatibility: Parts BZX84J-B6V8,115, BZX84J-C6V8,115, PZU6.8B2,115, UDZSTE-176.8B, UDZVFHTE-176.8B, and UDZVTE-176.8B maintain the SC-90 or SOD-323F package footprint, enabling direct board-level substitution without layout modifications. These parts are all active products with current manufacturing support.

Higher Power Rating Substitutes: BZX84J-B6V8,115 and BZX84J-C6V8,115 offer 550 mW power ratings, providing significant thermal margin over the original 150 mW specification. Both parts carry AEC-Q101 automotive qualification and ROHS3 compliance. The ±2% tolerance of BZX84J-B6V8,115 provides tighter voltage regulation compared to the original ±6% specification.

Minimal Power Increase Substitutes: UDZSTE-176.8B, UDZVTE-176.8B, and UDZVFHTE-176.8B offer 200 mW ratings with impedance values of 40 Ohms. These parts maintain close electrical characteristics to the original component while providing modest power headroom. UDZVFHTE-176.8B carries AEC-Q101 automotive qualification.

Alternative Package Options: MM3Z6V8ST1G (onsemi) provides 300 mW in SOD-323 package with ±2% tolerance and ROHS3 compliance. BZT52H-C6V8,115 (NXP) offers 375 mW in SOD-123F package with AEC-Q101 qualification, though this package differs from the original footprint. TDZTR6.8 (Rohm) provides 500 mW in TUMD2 package with ±10% tolerance and ROHS3 compliance.

Compliance and Qualification: All substitute parts carry ROHS3 compliance and REACH Unaffected status. Multiple substitutes (BZX84J-B6V8,115, BZX84J-C6V8,115, PZU6.8B2,115, UDZVFHTE-176.8B) include automotive-grade qualifications (AEC-Q101 or AEC-Q100), suitable for applications requiring automotive-level reliability.

Frequently Asked Questions (FAQ)

Q: Can BZX84J-B6V8,115 directly replace MAZ80680ML without circuit modifications?

A: Yes. Both parts maintain 6.8 V nominal zener voltage, surface mount configuration, and compatible SC-90/SOD-323F packages. The higher 550 mW power rating of BZX84J-B6V8,115 is backward compatible with circuits designed for 150 mW operation. The ±2% tolerance provides improved voltage regulation compared to the original ±6% specification.

Q: What is the difference between UDZSTE-176.8B and UDZVTE-176.8B?

A: Both parts are 6.8 V, 200 mW Zener diodes in SC-90/SOD-323F packages from Rohm Semiconductor. UDZSTE-176.8B specifies ±2% tolerance, while UDZVTE-176.8B does not specify tolerance in the provided data. Both feature 40 Ohms maximum impedance and 500 nA reverse leakage current at 3.5 V. UDZSTE-176.8B is packaged in Cut Tape format, while UDZVTE-176.8B is available in Cut Tape & Digi-Reel format.

Q: Is UDZVFHTE-176.8B suitable for automotive applications?

A: Yes. UDZVFHTE-176.8B carries AEC-Q101 automotive qualification and operates across -55°C to 150°C temperature range. The part maintains 6.79 V nominal zener voltage (within 6.8 V specification tolerance) and 200 mW power rating with ±2.06% tolerance.

Q: Why does TDZTR6.8 have ±10% tolerance compared to other substitutes?

A: TDZTR6.8 from Rohm Semiconductor is specified with ±10% tolerance, which is wider than the original MAZ80680ML (±6%) and most active substitutes (±2% to ±5%). This part is suitable for applications where voltage regulation tolerance is not critical. The 500 mW power rating provides significant thermal margin.

Q: Can MM3Z6V8ST1G replace MAZ80680ML in existing PCB layouts?

A: MM3Z6V8ST1G uses SOD-323 package, which is compatible with SC-90/SOD-323F footprints. The part maintains 6.8 V nominal voltage and provides 300 mW power rating. Verify PCB pad dimensions and solder reflow profiles are compatible with the specific package variant before implementation.

Q: What is the advantage of BZT52H-C6V8,115 over other substitutes?

A: BZT52H-C6V8,115 offers 375 mW power rating with ±5% tolerance and 8 Ohms maximum impedance, providing the lowest impedance among all listed substitutes. This results in superior voltage regulation characteristics. The part carries AEC-Q101 automotive qualification. The SOD-123F package differs from the original footprint and requires PCB layout verification.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts carry ROHS3 compliance status. The original MAZ80680ML does not specify RoHS status in the provided data. All substitutes also carry REACH Unaffected status, indicating no restricted substances of concern.

Q: Which substitute offers the closest electrical match to MAZ80680ML?

A: PZU6.8B2,115 provides the closest match with identical 20 Ohms maximum impedance, ±2% tolerance (tighter than original ±6%), 310 mW power rating (exceeding original 150 mW), and SC-90/SOD-323F package compatibility. This part carries AEC-Q100 automotive qualification and ROHS3 compliance.

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