MMSZ5232C-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The MMSZ5232C-TP is a 5.6 V, 500 mW Zener diode manufactured by Micro Commercial Co, designed for surface mount applications in the SOD-123 package. This component is classified as an interface diode and maintains active product status with 1086 units in current inventory. Equivalent and substitute parts are identified based on matching or compatible electrical specifications and mechanical packaging requirements for direct circuit board replacement or design flexibility.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	5.6	V
Tolerance	±2%	-
Power - Max	500	mW
Impedance (Max)	11	Ohms
Current - Reverse Leakage @ Vr	5	µA @ 3 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	-
Package / Case	SOD-123	-

Substitute Part Grouping Explanation

Substitute parts for the MMSZ5232C-TP are categorized based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

Zener voltage: 5.6 V nominal
Package type: SOD-123 (surface mount)
Mounting type: Surface mount

Secondary Compatibility Factors:

Power dissipation rating (500 mW preferred; lower ratings acceptable for reduced power applications)
Voltage tolerance (±2% preferred; ±3%, ±5%, ±7% acceptable with design verification)
Impedance (11 Ohms preferred; higher impedance acceptable for non-critical applications)
Operating temperature range (-55°C to 150°C preferred; -65°C to 150°C acceptable)

Substitutes are grouped into two categories: Direct Equivalents (matching all primary and secondary parameters) and Compatible Alternatives (matching primary criteria with acceptable parameter variations).

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Zzt (Ohms)	Ir @ Vr	Vf @ If	Temp Range (°C)	Package	Status
MMSZ5232C-TP	Micro Commercial Co	5.6	±2%	500	11	5 µA @ 3 V	900 mV @ 10 mA	-55 to 150	SOD-123	Active
MMSZ5232C-E3-08	Vishay General Semiconductor	5.6	±2%	500	11	5 µA @ 3 V	900 mV @ 10 mA	-55 to 150	SOD-123	Active
BZT52C5V6-13-F	Diodes Incorporated	5.6	±7%	370	40	1 µA @ 2 V	900 mV @ 10 mA	-65 to 150	SOD-123	Active
BZT52C5V6-7-F	Diodes Incorporated	5.6	±7%	500	40	1 µA @ 2 V	900 mV @ 10 mA	-65 to 150	SOD-123	Active
BZT52C5V6-HE3-08	Vishay General Semiconductor	5.6	±5%	410	40	100 nA @ 1 V	-	-55 to 150	SOD-123	Obsolete
BZT52C5V6-HE3-18	Vishay General Semiconductor	5.6	±5%	410	40	100 nA @ 1 V	-	-55 to 150	SOD-123	Obsolete
BZT52C5V6LP-7	Diodes Incorporated	5.6	±7%	250	40	1 µA @ 2 V	900 mV @ 10 mA	-65 to 150	0402 (1006 Metric)	Active
BZT52C5V6T-7	Diodes Incorporated	5.6	±7%	300	40	1 µA @ 2 V	900 mV @ 10 mA	-65 to 150	SOD-523	Active
CMHZ5232B TR PBFREE	Central Semiconductor Corp	5.6	±5%	500	11	5 µA @ 3 V	900 mV @ 10 mA	-65 to 150	SOD-123	Active
DDZ5V6B-7	Diodes Incorporated	5.6	±3%	500	11	500 nA @ 2.5 V	900 mV @ 10 mA	-65 to 150	SOD-123	Active
DDZ5V6BQ-7	Diodes Incorporated	5.6	±3%	310	11	500 nA @ 2.5 V	900 mV @ 10 mA	-65 to 150	SOD-123	Active

Engineering Selection Recommendations

Direct Equivalent (Preferred Substitutes):

MMSZ5232C-E3-08 (Vishay General Semiconductor) is the primary direct equivalent, matching all electrical specifications and operating parameters of the MMSZ5232C-TP. Both components feature 5.6 V nominal Zener voltage, ±2% tolerance, 500 mW power rating, 11 Ohms impedance, and SOD-123 packaging. This part is active and ROHS3 compliant with unlimited moisture sensitivity level.

CMHZ5232B TR PBFREE (Central Semiconductor Corp) provides functional equivalence with identical electrical characteristics (5.6 V, 500 mW, 11 Ohms impedance, SOD-123 package). The tolerance specification is ±5%, and the operating temperature range extends to -65°C. This part is active and ROHS3 compliant.

DDZ5V6B-7 (Diodes Incorporated) offers equivalent performance with 5.6 V nominal voltage, 500 mW power rating, and 11 Ohms impedance in SOD-123 package. Tolerance is ±3%, and operating temperature range is -65°C to 150°C. This part is active and ROHS3 compliant.

Compatible Alternatives (Acceptable for Reduced Power Applications):

BZT52C5V6-7-F (Diodes Incorporated) maintains 5.6 V nominal voltage and 500 mW power rating in SOD-123 package but features ±7% tolerance and 40 Ohms impedance. Operating temperature range is -65°C to 150°C. This part is active and ROHS3 compliant.

BZT52C5V6-13-F (Diodes Incorporated) provides 5.6 V nominal voltage in SOD-123 package with 370 mW power rating, ±7% tolerance, and 40 Ohms impedance. Operating temperature range is -65°C to 150°C. This part is active and ROHS3 compliant.

DDZ5V6BQ-7 (Diodes Incorporated) is AEC-Q101 qualified for automotive applications, featuring 5.6 V nominal voltage, 310 mW power rating, ±3% tolerance, and 11 Ohms impedance in SOD-123 package. Operating temperature range is -65°C to 150°C. This part is active and ROHS3 compliant.

Obsolete Parts (Not Recommended for New Designs):

BZT52C5V6-HE3-08 and BZT52C5V6-HE3-18 (Vishay General Semiconductor) are marked as obsolete and should not be selected for new circuit designs, despite AEC-Q101 automotive qualification.

Package Variants (Different Mechanical Form Factors):

BZT52C5V6LP-7 (Diodes Incorporated) uses 0402 (1006 Metric) package instead of SOD-123, suitable only for applications where this smaller package is mechanically compatible.

BZT52C5V6T-7 (Diodes Incorporated) uses SOD-523 package instead of SOD-123, suitable only for applications where this alternative package is mechanically compatible.

Frequently Asked Questions (FAQ)

Q: Can MMSZ5232C-E3-08 be used as a direct replacement for MMSZ5232C-TP?

A: Yes. MMSZ5232C-E3-08 is a direct equivalent with identical electrical specifications: 5.6 V nominal Zener voltage, ±2% tolerance, 500 mW power rating, 11 Ohms impedance, and SOD-123 surface mount package. Both parts are active and ROHS3 compliant.

Q: What is the difference between the MMSZ5232C-TP and BZT52C5V6-7-F?

A: Both parts share 5.6 V nominal voltage, 500 mW power rating, and SOD-123 packaging. Key differences are: MMSZ5232C-TP has ±2% tolerance and 11 Ohms impedance, while BZT52C5V6-7-F has ±7% tolerance and 40 Ohms impedance. The higher impedance of the BZT52 series may affect circuit performance in precision applications.

Q: Can I use BZT52C5V6-13-F as a substitute if the MMSZ5232C-TP is unavailable?

A: BZT52C5V6-13-F is compatible for applications where 370 mW power dissipation is sufficient. However, it features ±7% voltage tolerance and 40 Ohms impedance compared to the MMSZ5232C-TP's ±2% tolerance and 11 Ohms impedance. Circuit performance verification is required for precision voltage regulation applications.

Q: Are BZT52C5V6-HE3-08 and BZT52C5V6-HE3-18 suitable for new designs?

A: No. Both parts are marked as obsolete and should not be selected for new circuit designs. Active alternatives with equivalent or superior specifications are available.

Q: What is the significance of the SOD-123 package specification?

A: SOD-123 is the surface mount package form factor for the MMSZ5232C-TP. Substitute parts must use SOD-123 packaging for direct mechanical compatibility on the circuit board. Parts using alternative packages (such as 0402 or SOD-523) require board layout modifications and are not direct mechanical replacements.

Q: Why do some substitute parts have higher impedance values (40 Ohms vs. 11 Ohms)?

A: Impedance (Zzt) affects the dynamic resistance of the Zener diode. Lower impedance (11 Ohms) provides better voltage regulation and lower noise in precision applications. Higher impedance (40 Ohms) is acceptable for general-purpose applications but may result in greater voltage variation under load changes.

Q: Is CMHZ5232B TR PBFREE equivalent to MMSZ5232C-TP?

A: CMHZ5232B TR PBFREE is functionally equivalent with identical electrical characteristics (5.6 V, 500 mW, 11 Ohms impedance, SOD-123 package). The tolerance is ±5% compared to ±2% for the MMSZ5232C-TP, and the operating temperature range extends to -65°C. Both are active and ROHS3 compliant.

Q: What does AEC-Q101 qualification mean for DDZ5V6BQ-7?

A: AEC-Q101 qualification indicates that DDZ5V6BQ-7 meets automotive industry reliability and performance standards. This part is suitable for automotive applications requiring certified component qualification. It is not required for general industrial or consumer applications.

Q: Can I substitute a 250 mW Zener diode (BZT52C5V6LP-7) for the 500 mW MMSZ5232C-TP?

A: Substitution is possible only if the circuit design requires less than 250 mW power dissipation. The BZT52C5V6LP-7 also uses a different package (0402 Metric) instead of SOD-123, requiring board layout modifications. Verify power requirements before substitution.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel (TR) packaging is supplied on continuous reels for automated assembly processes. Cut Tape (CT) is supplied in shorter tape segments for manual or small-batch assembly. Both contain identical components; packaging format affects procurement and assembly methods only.

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