MMSZ4697ET1 Equivalent & Substitute Parts

Part Overview

The MMSZ4697ET1 is a Zener diode rated at 10 V nominal voltage with 500 mW power dissipation in a surface mount SOD-123 package. Manufactured by onsemi, this component is classified as obsolete product status. Due to its obsolete designation, locating direct inventory from original manufacturing channels may present supply chain challenges. Equivalent and substitute parts with active product status provide viable alternatives for new designs and ongoing production requirements while maintaining electrical and mechanical compatibility within specified parameters.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	10	V
Tolerance	±5%	—
Power - Max	500	mW
Current - Reverse Leakage @ Vr	1	µA @ 7.6 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOD-123	—
RoHS Status	RoHS non-compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the MMSZ4697ET1 is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage (Nom): 10 V
Tolerance: ±5%
Mounting type: Surface Mount
Operating temperature range: Minimum -55°C to maximum 150°C

Secondary Compatibility Factors:

Power dissipation rating: Equal to or greater than 500 mW
Forward voltage (Vf): Maximum 900 mV @ 10 mA
Reverse leakage current: Specified at comparable voltage reference
Package form factor: SOD-123 or equivalent surface mount package

Parts are grouped into two categories:

Direct Equivalent: MMSZ4697T1G maintains identical electrical specifications and SOD-123 packaging with active product status and RoHS3 compliance.

Functional Substitutes: BZT52H-C10,115 and PZU10BA,115 meet the core zener voltage and tolerance requirements but operate within different power dissipation ratings and package variants (SOD-123F and SOD-323 respectively). These parts satisfy the 10 V zener specification and forward voltage characteristics while accommodating alternative thermal and spatial constraints.

Parameter Comparison

Parameter	MMSZ4697ET1 (Main)	MMSZ4697T1G (Direct)	BZT52H-C10,115 (Substitute)	PZU10BA,115 (Substitute)
Manufacturer	onsemi	onsemi	Nexperia USA Inc.	Nexperia USA Inc.
Voltage - Zener (Nom)	10 V	10 V	10 V	10 V
Tolerance	±5%	±5%	±5%	±5%
Power - Max	500 mW	500 mW	375 mW	320 mW
Current - Reverse Leakage @ Vr	1 µA @ 7.6 V	1 µA @ 7.6 V	200 nA @ 7 V	100 nA @ 7 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	1.1 V @ 100 mA
Operating Temperature Range	-55 to 150°C	-55 to 150°C	-65 to 150°C	-55 to 150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-123	SOD-123	SOD-123F	SOD-323
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant

Engineering Selection Recommendations

MMSZ4697T1G (Direct Equivalent - Preferred for Direct Replacement)

The MMSZ4697T1G is the primary equivalent for the MMSZ4697ET1. This part maintains identical electrical specifications across all critical parameters: 10 V zener voltage, ±5% tolerance, 500 mW power rating, and SOD-123 packaging. The MMSZ4697T1G carries active product status with RoHS3 compliance and significantly higher inventory availability (70,200 units in stock versus 2,620 for the original part). This part is suitable for direct substitution in existing designs without circuit modification.

BZT52H-C10,115 (Functional Substitute - Reduced Power Rating)

The BZT52H-C10,115 manufactured by Nexperia meets the 10 V zener voltage and ±5% tolerance specifications. This part operates at 375 mW maximum power dissipation, representing a 25% reduction from the MMSZ4697ET1 specification. The BZT52H-C10,115 features an SOD-123F package variant and includes automotive-grade qualification (AEC-Q101) with extended temperature range (-65 to 150°C). Selection of this part requires verification that circuit power dissipation requirements do not exceed 375 mW. This part is suitable for applications with reduced thermal budgets or automotive qualification requirements.

PZU10BA,115 (Functional Substitute - Reduced Power Rating and Alternate Package)

The PZU10BA,115 manufactured by Nexperia meets the 10 V zener voltage and ±5% tolerance specifications. This part operates at 320 mW maximum power dissipation and uses an SOD-323 package form factor. The SOD-323 package is physically smaller than SOD-123, requiring PCB layout modification. The forward voltage specification differs at 1.1 V @ 100 mA (versus 900 mV @ 10 mA for the main part). Selection of this part requires verification that circuit power dissipation requirements do not exceed 320 mW and that PCB layout accommodates the SOD-323 footprint.

Frequently Asked Questions (FAQ)

Q: Can MMSZ4697T1G be used as a direct replacement for MMSZ4697ET1?

A: Yes. The MMSZ4697T1G is a direct equivalent with identical electrical specifications and SOD-123 packaging. Both parts share the same base product number (MMSZ4697) and differ only in product status (active versus obsolete) and RoHS compliance. No circuit modification is required.

Q: What is the primary difference between MMSZ4697T1G and BZT52H-C10,115?

A: The primary difference is power dissipation rating. MMSZ4697T1G is rated at 500 mW, while BZT52H-C10,115 is rated at 375 mW. Both maintain 10 V zener voltage and ±5% tolerance. The BZT52H-C10,115 uses an SOD-123F package variant and includes automotive qualification. Selection depends on circuit power requirements and whether automotive-grade components are specified.

Q: Can BZT52H-C10,115 be used in place of MMSZ4697ET1 if power dissipation is below 375 mW?

A: Yes, provided circuit power dissipation does not exceed 375 mW. The BZT52H-C10,115 meets the 10 V zener voltage and ±5% tolerance requirements. The SOD-123F package is mechanically compatible with SOD-123 footprints in most applications. Verify that the reduced power rating accommodates your specific circuit thermal requirements.

Q: Why does PZU10BA,115 have a different forward voltage specification?

A: The PZU10BA,115 forward voltage is specified at 1.1 V @ 100 mA, while MMSZ4697ET1 is specified at 900 mV @ 10 mA. These measurements occur at different current levels. The PZU10BA,115 specification reflects measurement at higher current (100 mA versus 10 mA). Both parts meet the 10 V zener voltage requirement and are suitable for zener regulation applications.

Q: Is PCB layout modification required when substituting with PZU10BA,115?

A: Yes. The PZU10BA,115 uses an SOD-323 package, which is physically smaller than the SOD-123 package used by MMSZ4697ET1. PCB footprint modification is required. Additionally, circuit power dissipation must not exceed 320 mW. Verify both thermal and spatial constraints before implementation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. MMSZ4697T1G, BZT52H-C10,115, and PZU10BA,115 are all RoHS3 compliant. The original MMSZ4697ET1 is RoHS non-compliant. If RoHS compliance is a design requirement, all three substitute parts satisfy this criterion.

Q: What is the inventory status of each part?

A: MMSZ4697T1G has 70,200 units in stock (highest availability). BZT52H-C10,115 has 7,380 units in stock. PZU10BA,115 has 4,075 units in stock. The original MMSZ4697ET1 has 2,620 units in stock. For long-term supply chain stability, MMSZ4697T1G is the recommended choice.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message