MMSZ4690-TP Zener Diode 5.6V 500mW SOD-123 Equivalent & Substitute Parts

Part Overview

The MMSZ4690-TP is an active-status Zener diode manufactured by Micro Commercial Co, rated for 5.6 V nominal voltage and 500 mW maximum power dissipation in a surface-mount SOD-123 package. This component is supplied in Tape & Reel packaging and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, inventory availability, packaging formats, or manufacturer options while maintaining electrical and mechanical compatibility within specified tolerance ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	5.6	V
Tolerance	±5%	—
Power - Max	500	mW
Current - Reverse Leakage @ Vr	10	µA @ 4 V
Voltage - Forward (Vf) (Max) @ If	950	mV @ 10 mA
Operating Temperature Range	-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 for the MMSZ4690-TP are classified into two categories based on electrical and mechanical parameter alignment:

Direct Equivalents maintain identical or functionally equivalent specifications across all critical parameters: 5.6 V nominal Zener voltage, ±5% tolerance, 500 mW maximum power rating, SOD-123 package, surface-mount configuration, and ROHS3 compliance. These parts differ only in manufacturer identity, packaging format (Cut Tape vs. Tape & Reel), or automotive-grade qualification.

Similar Alternatives share the core 5.6 V Zener voltage and SOD-123 package footprint but deviate in one or more secondary parameters including power rating (300 mW or 310 mW), voltage tolerance (±3% or ±7%), reverse leakage current specifications, or package variant (SOD-523). These parts are suitable when design margins accommodate reduced power dissipation or tighter tolerance requirements.

Substitution eligibility is determined by: (1) matching Zener voltage (5.6 V nominal), (2) compatible package/case type, (3) power rating equal to or exceeding application requirements, (4) operating temperature range coverage, and (5) compliance certifications (ROHS3, REACH Unaffected, EAR99).

Parameter Comparison

Part Number	Manufacturer	Vz (Nom)	Tolerance	Power (Max)	Vf (Max) @ If	Package	Packaging Format	Automotive Grade
MMSZ4690-TP	Micro Commercial Co	5.6 V	±5%	500 mW	950 mV @ 10 mA	SOD-123	Tape & Reel	—
MMSZ4690T1G	onsemi	5.6 V	±5%	500 mW	900 mV @ 10 mA	SOD-123	Cut Tape & Digi-Reel	—
SZMMSZ4690T1G	onsemi	5.6 V	±5%	500 mW	900 mV @ 10 mA	SOD-123	Tape & Reel	AEC-Q101
DDZ9690-7	Diodes Incorporated	5.6 V	±5%	500 mW	900 mV @ 10 mA	SOD-123	Tape & Reel	—
MMSZ5232B-7-F	Diodes Incorporated	5.6 V	±5%	500 mW	900 mV @ 10 mA	SOD-123	Cut Tape & Digi-Reel	—
BZT52C5V6T-7	Diodes Incorporated	5.6 V	±7%	300 mW	900 mV @ 10 mA	SOD-523	Cut Tape & Digi-Reel	—
DDZ5V6BQ-7	Diodes Incorporated	5.6 V	±3%	310 mW	900 mV @ 10 mA	SOD-123	Tape & Reel	AEC-Q101

Engineering Selection Recommendations

Direct Equivalent Selection: MMSZ4690T1G, SZMMSZ4690T1G, DDZ9690-7, and MMSZ5232B-7-F are functionally equivalent to MMSZ4690-TP. All maintain 5.6 V nominal voltage, ±5% tolerance, 500 mW power rating, and SOD-123 package compatibility. All substitute parts are active-status products with ROHS3 compliance and REACH Unaffected status. SZMMSZ4690T1G and DDZ5V6BQ-7 carry AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade components.

Packaging Considerations: MMSZ4690-TP is supplied in Tape & Reel format. Direct equivalents SZMMSZ4690T1G and DDZ9690-7 maintain identical packaging. MMSZ4690T1G and MMSZ5232B-7-F are available in Cut Tape & Digi-Reel format, appropriate for lower-volume or mixed-component assembly processes.

Reduced Power Rating Alternatives: BZT52C5V6T-7 (300 mW) and DDZ5V6BQ-7 (310 mW) are suitable only when application power dissipation requirements are confirmed below 300 mW. BZT52C5V6T-7 uses SOD-523 package, requiring PCB layout modification. DDZ5V6BQ-7 maintains SOD-123 footprint compatibility and offers tighter ±3% tolerance.

Inventory and Availability: DDZ9690-7 (47,200 pcs), MMSZ4690T1G (965,200 pcs), and MMSZ5232B-7-F (24,991 pcs) offer substantial stock availability. SZMMSZ4690T1G (25,217 pcs) provides automotive-qualified inventory in Tape & Reel format.

Frequently Asked Questions (FAQ)

Q: Can MMSZ4690T1G replace MMSZ4690-TP directly?

A: Yes. Both parts share identical electrical specifications: 5.6 V nominal voltage, ±5% tolerance, 500 mW power rating, and SOD-123 package. The primary difference is packaging format (Cut Tape & Digi-Reel vs. Tape & Reel) and manufacturer (onsemi vs. Micro Commercial Co). Electrical performance and PCB footprint compatibility are equivalent.

Q: What is the difference between SZMMSZ4690T1G and MMSZ4690T1G?

A: Both are onsemi-manufactured 5.6 V, 500 mW SOD-123 Zener diodes with identical electrical specifications. SZMMSZ4690T1G carries AEC-Q101 automotive qualification and is supplied in Tape & Reel format. MMSZ4690T1G is supplied in Cut Tape & Digi-Reel format without automotive certification. Selection depends on application requirements and packaging compatibility.

Q: Is BZT52C5V6T-7 a suitable substitute?

A: BZT52C5V6T-7 is a similar alternative only if application power dissipation is confirmed below 300 mW. This part differs in three parameters: reduced power rating (300 mW vs. 500 mW), wider tolerance (±7% vs. ±5%), and different package (SOD-523 vs. SOD-123). SOD-523 package requires PCB layout modification and is not pin-compatible with SOD-123 footprints.

Q: Why does DDZ5V6BQ-7 show lower power rating (310 mW) but tighter tolerance (±3%)?

A: DDZ5V6BQ-7 is a different product line optimized for precision voltage regulation with tighter tolerance specification. The 310 mW rating is sufficient for applications requiring voltage accuracy over power dissipation capacity. This part includes AEC-Q101 automotive qualification and is suitable for automotive or precision applications where ±3% tolerance is specified.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (MMSZ4690T1G, SZMMSZ4690T1G, DDZ9690-7, MMSZ5232B-7-F, BZT52C5V6T-7, and DDZ5V6BQ-7) are ROHS3 compliant with REACH Unaffected status, matching the compliance profile of MMSZ4690-TP.

Q: What is the operating temperature range for substitute parts?

A: MMSZ4690-TP operates from -55°C to 150°C. Direct equivalents MMSZ4690T1G and SZMMSZ4690T1G maintain this range. Alternative suppliers (Diodes Incorporated parts: DDZ9690-7, MMSZ5232B-7-F, BZT52C5V6T-7, DDZ5V6BQ-7) extend the lower limit to -65°C, providing wider temperature coverage.

Q: Can I use DDZ9690-7 in place of MMSZ4690-TP?

A: Yes. DDZ9690-7 is a direct electrical equivalent with matching 5.6 V nominal voltage, ±5% tolerance, 500 mW power rating, and SOD-123 package. Both are supplied in Tape & Reel format. The manufacturer difference (Diodes Incorporated vs. Micro Commercial Co) does not affect electrical or mechanical compatibility.

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