MAZS047GML Zener Diode 4.7V 150mW Equivalent & Substitute Parts

Part Overview

The MAZS047GML is a 4.7V Zener diode manufactured by Panasonic Electronic Components, rated for 150mW power dissipation in a surface mount SSMini2-F4 package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part operates as a voltage regulation and protection element in electronic circuits requiring precise 4.7V reference voltage control.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	4.7	V
Tolerance	±3%	-
Power - Max	150	mW
Impedance (Max)	80	Ohms
Current - Reverse Leakage @ Vr	2	µA @ 1V
Voltage - Forward (Max) @ If	1	V @ 10mA
Mounting Type	Surface Mount	-
Package / Case	SC-79, SOD-523	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution eligibility for the MAZS047GML is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 4.7V nominal (tolerance range acceptable within ±5%)
Power rating: minimum 150mW (equal or greater)
Mounting type: Surface Mount
Package compatibility: SOD-523 or equivalent footprint (SC-79)
Moisture sensitivity: MSL 1 (Unlimited)

Secondary Compatibility Factors:

Impedance (Zzt): 80 Ohms maximum
Reverse leakage current: 2-3 µA range acceptable
Forward voltage: 1V or less at specified current

The substitute parts listed below meet these criteria with variations in power rating, tolerance, and package designation. Parts with higher power ratings (300mW, 375mW, 550mW) provide enhanced thermal margin and are functionally compatible. Tolerance variations (±2%, ±2.15%, ±5%) remain within acceptable engineering limits for voltage reference applications.

Parameter Comparison

Parameter	MAZS047GML (Main)	BZX585-B4V7,115	BZX585-B4V7,135	BZX84J-C4V7,115	BZT52H-C4V7,115	EDZVFHT2R4.7B
Manufacturer	Panasonic	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.	NXP Semiconductors	Rohm Semiconductor
Voltage - Zener (Nom)	4.7V	4.7V	4.7V	4.7V	4.7V	4.65V
Tolerance	±3%	±2%	±2%	±5%	±5%	±2.15%
Power - Max	150mW	300mW	300mW	550mW	375mW	150mW
Impedance (Max)	80Ω	80Ω	80Ω	80Ω	78Ω	100Ω
Current - Reverse Leakage @ Vr	2µA @ 1V	3µA @ 2V	3µA @ 2V	3µA @ 2V	3µA @ 2V	2µA @ 1V
Voltage - Forward (Max) @ If	1V @ 10mA	1.1V @ 100mA	1.1V @ 100mA	1.1V @ 100mA	900mV @ 10mA	-
Operating Temperature	-	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 150°C	150°C (TJ)
Package / Case	SC-79, SOD-523	SC-79, SOD-523	SC-79, SOD-523	SC-90, SOD-323F	SOD-123F	SC-79, SOD-523
Product Status	Obsolete	Active	Active	Active	Active	Active
Grade	-	Automotive	Automotive	Automotive	Automotive	Automotive
Qualification	-	AEC-Q100	AEC-Q100	AEC-Q101	AEC-Q101	AEC-Q101
RoHS Status	-	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	-	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Footprint Compatibility (Preferred):

BZX585-B4V7,115 and BZX585-B4V7,135 are the primary substitutes for MAZS047GML. Both parts maintain identical SOD-523 package geometry, 80Ω impedance specification, and 4.7V nominal voltage. The 300mW power rating provides 2x thermal margin over the original 150mW specification. Both parts carry AEC-Q100 automotive qualification and ROHS3 compliance. The ±2% tolerance offers improved voltage regulation precision compared to the original ±3% specification.

Alternative with Enhanced Power Rating:

BZX84J-C4V7,115 provides 550mW power dissipation in a SOD-323F package (SC-90). This part requires PCB layout modification due to different package footprint but delivers superior thermal performance. AEC-Q101 qualification and ROHS3 compliance are maintained. The ±5% tolerance is acceptable for general voltage reference applications.

Matched Power Rating Alternative:

EDZVFHT2R4.7B from Rohm Semiconductor maintains the original 150mW power specification with identical SOD-523 package compatibility. The 4.65V nominal voltage (within ±2.15% tolerance) and 2µA reverse leakage current match the original electrical characteristics precisely. This part is suitable for applications requiring exact power budget matching. AEC-Q101 qualification and ROHS3 compliance are provided.

Package-Constrained Selection:

BZT52H-C4V7,115 operates in SOD-123F package, requiring significant PCB redesign. The 375mW power rating and automotive qualification (AEC-Q101) are acceptable, but footprint incompatibility limits its use to new designs or major board revisions.

Selection Priority:

BZX585-B4V7,115 or BZX585-B4V7,135 for direct replacement
EDZVFHT2R4.7B for matched power specification
BZX84J-C4V7,115 for enhanced thermal margin with layout modification
BZT52H-C4V7,115 only for new designs with package flexibility

Frequently Asked Questions (FAQ)

Q: Can BZX585-B4V7,115 directly replace MAZS047GML without PCB modification?

A: Yes. Both parts use SOD-523 package (SC-79 designation), identical pin configuration, and compatible electrical specifications. No PCB layout changes are required. The higher 300mW power rating is functionally compatible with 150mW circuit requirements.

Q: What is the voltage tolerance impact when substituting with ±2% parts?

A: The BZX585-B4V7 series with ±2% tolerance provides tighter voltage regulation than the original ±3% specification. For a 4.7V nominal reference, this represents ±0.094V versus ±0.141V. This improvement is beneficial for precision voltage regulation circuits and does not create compatibility issues.

Q: Are all substitute parts automotive-grade qualified?

A: Yes. All listed substitutes carry either AEC-Q100 or AEC-Q101 automotive qualification. BZX585-B4V7 series holds AEC-Q100; BZX84J-C4V7,115, BZT52H-C4V7,115, and EDZVFHT2R4.7B hold AEC-Q101. Both qualifications meet automotive reliability standards.

Q: Why does EDZVFHT2R4.7B show 4.65V instead of 4.7V?

A: The 4.65V nominal voltage with ±2.15% tolerance produces a range of 4.55V to 4.75V, which encompasses the 4.7V target. This specification is acceptable for voltage reference applications where the tolerance band is the controlling parameter rather than the nominal value alone.

Q: Can BZX84J-C4V7,115 be used as a drop-in replacement?

A: No. BZX84J-C4V7,115 uses SOD-323F package (SC-90), which has different pin spacing and footprint than the SOD-523 package of MAZS047GML. PCB layout modification is required. This part is suitable only for new designs or major board revisions where package change is acceptable.

Q: What is the difference between BZX585-B4V7,115 and BZX585-B4V7,135?

A: Both parts are electrically identical with 4.7V nominal voltage, ±2% tolerance, 300mW power rating, and SOD-523 package. The suffix difference (115 vs. 135) indicates different packaging reels or tape specifications. Selection between them depends on procurement and assembly equipment compatibility, not electrical performance.

Q: Is the higher power rating of substitute parts a concern?

A: No. Higher power ratings (300mW, 375mW, 550mW) are functionally compatible with 150mW circuit requirements. The power rating indicates maximum dissipation capability; actual dissipation is determined by circuit conditions. Higher ratings provide thermal margin and improved reliability.

Q: Do all substitutes have unlimited moisture sensitivity?

A: Yes. All listed parts carry MSL 1 (Unlimited) rating, matching the original MAZS047GML specification. No special moisture control or baking procedures are required during storage or assembly.

Q: Which substitute offers the closest electrical match to MAZS047GML?

A: EDZVFHT2R4.7B provides the closest match with identical 150mW power rating, 2µA reverse leakage current at 1V, and SOD-523 package compatibility. The 4.65V nominal voltage with ±2.15% tolerance is functionally equivalent to 4.7V ±3%.

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