MMSZ5236C-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The MMSZ5236C-TP is a 7.5 V Zener diode manufactured by Micro Commercial Co, rated for 500 mW power dissipation with ±2% voltage tolerance. This surface mount component in SOD-123 packaging is designed for interface applications requiring precise voltage regulation and protection. The part maintains Active product status with 950 units in current inventory.

Equivalent and substitute parts are identified to address supply chain requirements, packaging preferences, and application-specific performance needs while maintaining electrical and mechanical compatibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	7.5	V
Tolerance	±2%	—
Power - Maximum	500	mW
Impedance (Maximum)	6	Ohms
Current - Reverse Leakage @ Vr	3	µA @ 6 V
Voltage - Forward (Maximum) @ If	900	mV @ 10 mA
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	SOD-123	—

Substitute Part Grouping Explanation

Substitution eligibility for the MMSZ5236C-TP is determined by the following critical parameters:

Primary Matching Criteria:

Zener voltage: 7.5 V nominal
Package type: SOD-123 surface mount
Operating temperature range: -55°C to 150°C minimum
Mounting type: Surface mount

Secondary Compatibility Factors:

Power rating: 500 mW or greater
Voltage tolerance: ±2% or ±5% acceptable
Impedance and reverse leakage characteristics within application limits

Substitute parts are grouped into two categories based on electrical performance alignment:

Category A - Direct Electrical Equivalents (±2% Tolerance): Parts matching the ±2% voltage tolerance specification of the main part, ensuring tighter voltage regulation performance.

Category B - Functional Equivalents (±5% Tolerance): Parts with ±5% voltage tolerance that maintain the same 7.5 V nominal rating and 500 mW power capability, suitable for applications with broader tolerance requirements.

Package Variant: One substitute (DDZ9693S-7) uses SOD-323 packaging instead of SOD-123, requiring PCB layout modification and is listed for reference only.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Zzt (Ω)	Ir @ Vr (µA)	Package	Temp Range (°C)
MMSZ5236C-TP	Micro Commercial Co	7.5	±2%	500	6	3 @ 6V	SOD-123	-55 to 150
BZT52B7V5-E3-08	Vishay	7.5	±2%	410	7	0.1 @ 5V	SOD-123	-55 to 150
DDZ9693Q-7	Diodes Incorporated	7.5	±5%	500	—	0.1 @ 5.7V	SOD-123	-65 to 150
DDZ9693S-7	Diodes Incorporated	7.5	±5%	200	—	0.1 @ 5.7V	SOD-323	-65 to 150
MMSZ4693-E3-08	Vishay	7.5	±5%	500	—	10 @ 5.7V	SOD-123	-55 to 150
MMSZ4693-E3-18	Vishay	7.5	±5%	500	—	10 @ 5.7V	SOD-123	-55 to 150
MMSZ4693T1G	onsemi	7.5	±5%	500	—	10 @ 5.7V	SOD-123	-55 to 150
MMSZ4693T3G	onsemi	7.5	±5%	500	—	10 @ 5.7V	SOD-123	-55 to 150
MMSZ5236B-E3-08	Vishay	7.5	±5%	500	6	3 @ 6V	SOD-123	-55 to 150

Engineering Selection Recommendations

For ±2% Voltage Tolerance Applications:

BZT52B7V5-E3-08 (Vishay) is the primary equivalent when ±2% tolerance matching is required. This part maintains identical voltage tolerance and operating temperature range. Power rating is 410 mW, which is lower than the main part; applications requiring full 500 mW dissipation should verify thermal headroom. RoHS3 compliance and MSL-1 rating are confirmed. Tape & Reel packaging is standard for production volumes.

MMSZ5236B-E3-08 (Vishay) provides an alternative with matching ±5% tolerance, identical impedance (6 Ohms), and reverse leakage characteristics (3 µA @ 6 V) to the main part. This part maintains 500 mW power rating and is RoHS3 compliant with MSL-1 rating.

For ±5% Voltage Tolerance Applications:

DDZ9693Q-7 (Diodes Incorporated) matches the 500 mW power rating and SOD-123 package with extended temperature range (-65°C to 150°C). AEC-Q101 automotive qualification is available. RoHS3 compliant with MSL-1 rating.

MMSZ4693T1G and MMSZ4693T3G (onsemi) both provide 500 mW power in SOD-123 packaging with ±5% tolerance. Inventory availability is high (875,200 and 19,246 units respectively). Both are RoHS3 compliant with MSL-1 rating. Packaging differs: T1G uses Cut Tape & Digi-Reel, T3G uses Tape & Reel.

MMSZ4693-E3-08 and MMSZ4693-E3-18 (Vishay) offer 500 mW power with ±5% tolerance. E3-08 is Tape & Reel; E3-18 is Cut Tape & Digi-Reel. Both are RoHS3 compliant with MSL-1 rating.

Package Consideration:

DDZ9693S-7 uses SOD-323 packaging instead of SOD-123. This part is not recommended as a direct substitute due to different footprint requirements. Power rating is also reduced to 200 mW.

Compliance Status:

All substitute parts maintain REACH Unaffected status and EAR99 ECCN classification matching the main part. RoHS3 compliance is confirmed for all substitutes.

Frequently Asked Questions (FAQ)

Q: Can BZT52B7V5-E3-08 replace MMSZ5236C-TP in all applications?

A: BZT52B7V5-E3-08 is electrically compatible with matching ±2% tolerance and operating temperature range. However, power rating is 410 mW versus 500 mW for the main part. Applications operating near maximum power dissipation must verify thermal performance with the lower rating.

Q: What is the difference between MMSZ4693T1G and MMSZ4693T3G?

A: Both parts are electrically identical with 7.5 V nominal, ±5% tolerance, and 500 mW power rating. The difference is packaging: T1G uses Cut Tape & Digi-Reel format, while T3G uses standard Tape & Reel. Selection depends on assembly process requirements.

Q: Why does DDZ9693S-7 have lower power rating?

A: DDZ9693S-7 uses SOD-323 packaging, which has lower thermal capability than SOD-123. Power rating is 200 mW. This part requires PCB layout modification and is not recommended as a direct substitute.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant with MSL-1 (Unlimited) moisture sensitivity level, matching the compliance profile of the main part.

Q: What is the significance of ±2% versus ±5% tolerance?

A: ±2% tolerance provides tighter voltage regulation, ensuring the Zener voltage remains within 7.35 V to 7.65 V. ±5% tolerance allows 7.125 V to 7.875 V variation. Applications requiring precise voltage reference should use ±2% parts. General protection applications accept ±5% tolerance.

Q: Can I use DDZ9693Q-7 in automotive applications?

A: DDZ9693Q-7 carries AEC-Q101 automotive qualification and extended temperature range (-65°C to 150°C). It is suitable for automotive applications requiring these certifications.

Q: What packaging options are available?

A: All recommended substitutes use SOD-123 surface mount packaging matching the main part, except DDZ9693S-7 which uses SOD-323. Packaging format options include Tape & Reel (TR), Cut Tape (CT) & Digi-Reel, and Bulk. Selection depends on assembly volume and process requirements.

Q: Is MMSZ5236B-E3-08 a direct equivalent to MMSZ5236C-TP?

A: MMSZ5236B-E3-08 shares the same base product number (MMSZ5236) and maintains identical impedance (6 Ohms) and reverse leakage (3 µA @ 6 V). Tolerance differs: C-TP is ±2%, B-E3-08 is ±5%. Both support 500 mW power and -55°C to 150°C operating range.

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