MMSZ5254C-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The MMSZ5254C-TP is a 27 V, 500 mW Zener diode manufactured by Micro Commercial Co, designed for surface mount applications in SOD-123 packaging. This component is classified as an interface diode and maintains active product status. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and operational parameters to ensure direct functional replacement in circuit designs.

Substiute Parts

MMSZ5254C-TP

Micro Commercial CoIn Stock: 781MMSZ5254C-TP Datasheet

Current PartRFQ

BZT52C27-7-F

Diodes IncorporatedIn Stock: 3441BZT52C27-7-F Datasheet

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MMSZ5254B-7-F

Diodes IncorporatedIn Stock: 38239MMSZ5254B-7-F Datasheet

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SZMMSZ4711T1G

onsemiIn Stock: 6137SZMMSZ4711T1G Datasheet

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SZMMSZ4711T3G

onsemiIn Stock: 752SZMMSZ4711T3G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MMSZ5254C-TP is determined by the following critical parameters:

Primary Matching Criteria:

• Zener voltage: 27 V nominal
• Maximum power dissipation: 500 mW
• Package type: SOD-123 surface mount
• Mounting type: Surface mount
• Forward voltage: 900 mV @ 10 mA

Secondary Compatibility Factors:

• Voltage tolerance (±2% to ±7% acceptable range)
• Impedance characteristics (41 to 80 Ohms maximum)
• Reverse leakage current specifications
• Operating temperature range (-55°C to -65°C minimum, 150°C maximum)

All identified substitute parts maintain the core electrical specifications and physical form factor required for direct circuit replacement. Variations in tolerance and impedance remain within acceptable operational parameters for interface diode applications.

Parameter Comparison

Engineering Selection Recommendations

MMSZ5254B-7-F (Diodes Incorporated) provides the closest electrical match to the MMSZ5254C-TP with identical impedance (41 Ohms) and reverse leakage specifications. This part carries ROHS3 compliance and is available in high inventory quantities (38,200 units). The ±5% tolerance represents a minor deviation from the original ±2% specification.

BZT52C27-7-F (Diodes Incorporated) maintains all critical electrical parameters with identical power rating and forward voltage characteristics. The ±7% tolerance and higher impedance (80 Ohms) represent acceptable variations for interface applications. ROHS3 compliance and extended temperature range (-65°C minimum) provide additional operational margin.

SZMMSZ4711T1G and SZMMSZ4711T3G (onsemi) are automotive-grade alternatives qualified to AEC-Q101 standards. Both parts feature superior reverse leakage characteristics (10 nA versus 100 nA) and maintain ±5% tolerance. These components are suitable for applications requiring automotive-level reliability and qualification.

All substitute parts maintain active product status and REACH compliance equivalent to the original component.

Frequently Asked Questions (FAQ)

Q: Can MMSZ5254B-7-F directly replace MMSZ5254C-TP in existing designs?

A: Yes. Both parts share identical 27 V nominal voltage, 500 mW power rating, 41 Ohms impedance, and SOD-123 packaging. The ±5% tolerance of MMSZ5254B-7-F is within acceptable operational parameters for interface diode applications.

Q: What is the significance of the ±2% tolerance on the original MMSZ5254C-TP?

A: The ±2% tolerance specifies the maximum deviation of the Zener voltage from the 27 V nominal value. Substitute parts with ±5% or ±7% tolerance maintain functional compatibility but allow greater voltage variation. Selection depends on circuit requirements for voltage regulation precision.

Q: Are the onsemi SZMMSZ4711 variants suitable for non-automotive applications?

A: Yes. The SZMMSZ4711T1G and SZMMSZ4711T3G are automotive-qualified components that exceed standard requirements. AEC-Q101 qualification and superior reverse leakage characteristics (10 nA) make these parts suitable for any application requiring enhanced reliability.

Q: How does impedance variation affect substitution compatibility?

A: Impedance (Zzt) affects dynamic resistance and voltage regulation characteristics. The original MMSZ5254C-TP specifies 41 Ohms maximum. BZT52C27-7-F specifies 80 Ohms maximum. Both values are acceptable for interface applications; selection depends on specific circuit impedance requirements.

Q: What packaging options are available for these substitute parts?

A: MMSZ5254B-7-F is supplied in Tape & Reel (TR) format with 38,200 units in stock. BZT52C27-7-F is available in Cut Tape (CT) and Digi-Reel format with 3,412 units in stock. SZMMSZ4711T1G and SZMMSZ4711T3G are supplied in Tape & Reel format with 6,065 and 709 units respectively. All maintain SOD-123 surface mount compatibility.

Q: Do substitute parts maintain the same operating temperature range?

A: The original MMSZ5254C-TP operates from -55°C to 150°C. Diodes Incorporated substitutes extend the minimum temperature to -65°C, providing additional cold-temperature margin. onsemi parts maintain the -55°C to 150°C range. All parts support the full 150°C maximum operating temperature.

Q: What compliance certifications apply to these substitute parts?

A: All substitute parts maintain REACH compliance and EAR99 export classification equivalent to the original component. Diodes Incorporated parts carry ROHS3 compliance. onsemi parts carry ROHS3 compliance and AEC-Q101 automotive qualification. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all substitute parts.