MMSZ4693-TP Zener Diode 7.5V 500mW SOD-123 Equivalent & Substitute Parts

Part Overview

The MMSZ4693-TP is a surface mount zener diode rated at 7.5 V nominal with 500 mW maximum power dissipation in SOD-123 package. Manufactured by Micro Commercial Co, this component is classified as Active and RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility. Alternative part numbers may be required due to inventory availability, manufacturer preference, packaging format variations, or supply chain considerations.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	7.5	V
Tolerance	±5%	—
Power - Max	500	mW
Current - Reverse Leakage @ Vr	10	µA @ 5.7 V
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOD-123	—
RoHS Status	ROHS3 Compliant	—
MSL Rating	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts are classified into two categories based on electrical and mechanical compatibility with the MMSZ4693-TP:

Direct Equivalents maintain identical or functionally equivalent specifications across all critical parameters: 7.5 V nominal zener voltage, ±5% tolerance, 500 mW maximum power, SOD-123 package, -55°C to 150°C operating temperature range, and RoHS3 compliance. These parts differ only in manufacturer, packaging format (Tape & Reel versus Cut Tape), or internal device designation suffix.

Similar Alternatives share the same zener voltage (7.5 V), package (SOD-123), and operating temperature range but differ in one or more of the following parameters: maximum power rating (410 mW or 250 mW instead of 500 mW), tolerance specification (±2% or ±6% instead of ±5%), reverse leakage current characteristics, impedance rating, or package footprint variant (X1-DFN1006-2 instead of SOD-123). These parts require design verification for power dissipation and leakage current compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vz (V)	Tolerance	Power Max (mW)	Ir @ Vr (µA)	Temp Range (°C)	Package	Status
MMSZ4693-TP	Micro Commercial Co	7.5	±5%	500	10 @ 5.7V	-55 to 150	SOD-123	Active
MMSZ4693-E3-08	Vishay General Semiconductor	7.5	±5%	500	10 @ 5.7V	-55 to 150	SOD-123	Active
MMSZ4693-E3-18	Vishay General Semiconductor	7.5	±5%	500	10 @ 5.7V	-55 to 150	SOD-123	Active
MMSZ4693T1G	onsemi	7.5	±5%	500	10 @ 5.7V	-55 to 150	SOD-123	Active
MMSZ4693T3G	onsemi	7.5	±5%	500	10 @ 5.7V	-55 to 150	SOD-123	Active
MMSZ5236B-E3-08	Vishay General Semiconductor	7.5	±5%	500	3 @ 6V	-55 to 150	SOD-123	Active
MMSZ5236BT1G	onsemi	7.5	±5%	500	3 @ 6V	-55 to 150	SOD-123	Active
BZT52B7V5-E3-08	Vishay General Semiconductor	7.5	±2%	410	0.1 @ 5V	-55 to 150	SOD-123	Active
BZT52C7V5-E3-08	Vishay General Semiconductor	7.5	±5%	410	0.1 @ 5V	-55 to 150	SOD-123	Active
BZT52C7V5-HE3-08	Vishay General Semiconductor	7.5	±5%	410	0.1 @ 5V	-55 to 150	SOD-123	Obsolete
BZT52C7V5LP-7	Diodes Incorporated	7.5	±6%	250	1 @ 5V	-65 to 150	X1-DFN1006-2	Active

Engineering Selection Recommendations

Direct Equivalents for Pin-Compatible Replacement:

MMSZ4693-E3-08, MMSZ4693-E3-18, MMSZ4693T1G, and MMSZ4693T3G are direct functional equivalents to MMSZ4693-TP. All maintain 7.5 V nominal voltage, ±5% tolerance, 500 mW power rating, and SOD-123 package geometry. These parts are interchangeable at the circuit level. Selection among these options depends on packaging format preference (Tape & Reel versus Cut Tape) and manufacturer availability. All are Active status and RoHS3 compliant.

Enhanced Leakage Performance Alternatives:

MMSZ5236B-E3-08 and MMSZ5236BT1G provide superior reverse leakage characteristics (3 µA @ 6V versus 10 µA @ 5.7V) while maintaining identical voltage, tolerance, power rating, package, and temperature range. These parts are suitable for applications requiring lower leakage current. Both are Active status and RoHS3 compliant.

Lower Power Alternatives:

BZT52B7V5-E3-08 and BZT52C7V5-E3-08 reduce maximum power dissipation to 410 mW. BZT52B7V5-E3-08 offers tighter tolerance (±2%) with significantly lower leakage (100 nA @ 5V). BZT52C7V5-E3-08 maintains ±5% tolerance with equivalent leakage performance. These parts are suitable for applications with reduced power requirements. Both are Active status and RoHS3 compliant.

Compact Package Alternative:

BZT52C7V5LP-7 uses X1-DFN1006-2 package (0402 metric footprint) instead of SOD-123, enabling smaller board area. This part reduces power to 250 mW and increases tolerance to ±6%. Operating temperature extends to -65°C minimum. This option requires PCB layout modification and is suitable only for space-constrained designs with compatible power budgets.

Obsolete Part Avoidance:

BZT52C7V5-HE3-08 is marked Obsolete and should not be selected for new designs despite functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can MMSZ4693-E3-08 directly replace MMSZ4693-TP without circuit modification?

A: Yes. MMSZ4693-E3-08 is a direct equivalent with identical electrical specifications (7.5 V, ±5%, 500 mW) and SOD-123 package. No circuit modification is required. The difference is manufacturer (Vishay versus Micro Commercial Co) and packaging format (Tape & Reel).

Q: What is the difference between MMSZ4693T1G and MMSZ4693T3G?

A: Both are onsemi equivalents with identical electrical specifications. The primary difference is packaging format: MMSZ4693T1G uses Cut Tape & Digi-Reel format, while MMSZ4693T3G uses Tape & Reel format. Electrical performance is equivalent.

Q: Can MMSZ5236B-E3-08 be used instead of MMSZ4693-TP?

A: Yes, with design verification. MMSZ5236B-E3-08 maintains 7.5 V voltage, ±5% tolerance, 500 mW power, and SOD-123 package. The key difference is lower reverse leakage current (3 µA @ 6V versus 10 µA @ 5.7V), which is beneficial for most applications. No circuit modification is required.

Q: Why would I choose BZT52C7V5-E3-08 over MMSZ4693-TP?

A: BZT52C7V5-E3-08 offers superior reverse leakage performance (100 nA @ 5V versus 10 µA @ 5.7V) and tighter impedance specification (7 Ohms). However, it reduces maximum power to 410 mW. Selection depends on application power requirements and leakage sensitivity.

Q: Is BZT52C7V5LP-7 compatible with MMSZ4693-TP?

A: BZT52C7V5LP-7 is electrically compatible (7.5 V, ±6% tolerance) but uses different package (X1-DFN1006-2 versus SOD-123). This requires PCB layout redesign and is suitable only for new designs. Power rating is reduced to 250 mW, requiring design verification for power dissipation compatibility.

Q: Are all listed parts RoHS3 compliant?

A: Yes. All parts listed are RoHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

Q: What does MSL 1 (Unlimited) mean?

A: MSL 1 indicates Moisture Sensitivity Level 1, meaning the component has unlimited shelf life without moisture bake-out requirements. All listed parts carry this rating.

Q: Can I use BZT52C7V5-HE3-08 in a new design?

A: No. BZT52C7V5-HE3-08 is marked Obsolete and should not be selected for new designs. Use Active alternatives such as BZT52C7V5-E3-08 instead.

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