MMBZ5225B-TP Equivalent & Substitute Parts

Part Overview

The MMBZ5225B-TP is a Zener diode manufactured by Micro Commercial Co, rated at 3 V nominal Zener voltage with 350 mW maximum power dissipation in a surface mount SOT-23 package. This component is classified as Active and maintains full RoHS3 compliance. Substitute parts are identified to provide alternative sourcing options when the primary part number becomes unavailable or when inventory constraints require component alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

MMBZ5225B-TP

Micro Commercial CoIn Stock: 3846MMBZ5225B-TP Datasheet

Current PartRFQ

MMBZ5225BLT1G

onsemiIn Stock: 29403MMBZ5225BLT1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MMBZ5225B-TP are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Electrical Compatibility Criteria:

• Zener voltage (Vz) must equal 3 V nominal
• Impedance (Zzt) must equal 29 Ohms maximum
• Reverse leakage current must equal 50 µA @ 1 V
• Forward voltage (Vf) must equal 900 mV @ 10 mA maximum

Mechanical Compatibility Criteria:

• Package type must be SOT-23-3 (TO-236-3, SC-59)
• Mounting type must be Surface Mount
• Moisture Sensitivity Level must be 1 (Unlimited)

Compliance Criteria:

• RoHS3 compliance required
• REACH Unaffected status required

The MMBZ5225BLT1G from onsemi qualifies as a substitute part. While its maximum power rating (225 mW) is lower than the primary part (350 mW), all critical electrical parameters match exactly, and the package, mounting type, and compliance certifications are identical. The lower power rating represents a more conservative specification within the same functional class.

Parameter Comparison

Engineering Selection Recommendations

Both the MMBZ5225B-TP and MMBZ5225BLT1G are Active product status components with full RoHS3 compliance and REACH Unaffected designation. Selection between these parts depends on application power dissipation requirements:

MMBZ5225B-TP (Micro Commercial Co) is suitable for applications requiring the full 350 mW power rating specification.

MMBZ5225BLT1G (onsemi) is suitable for applications where power dissipation does not exceed 225 mW. This part provides an extended operating temperature range (-65°C minimum versus -55°C minimum) and includes specified Zener voltage tolerance of ±5%.

Both parts share identical electrical characteristics for Zener voltage, impedance, reverse leakage, and forward voltage. Both are packaged in SOT-23-3 surface mount configuration with unlimited moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can MMBZ5225BLT1G replace MMBZ5225B-TP in all applications?

A: MMBZ5225BLT1G can replace MMBZ5225B-TP when circuit power dissipation does not exceed 225 mW. The lower power rating of the onsemi part is the limiting factor. All other electrical parameters (Zener voltage, impedance, leakage current, forward voltage) are identical.

Q: What is the difference in power rating between these parts?

A: MMBZ5225B-TP is rated at 350 mW maximum power dissipation. MMBZ5225BLT1G is rated at 225 mW maximum power dissipation. The 125 mW difference represents the primary distinction between these otherwise equivalent components.

Q: Are the packages identical?

A: Yes. Both parts use the SOT-23-3 package (also designated TO-236-3 or SC-59). Both are surface mount components with identical pinout and footprint compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both MMBZ5225B-TP and MMBZ5225BLT1G are RoHS3 compliant and REACH Unaffected. Both have Moisture Sensitivity Level 1 (Unlimited).

Q: What is the operating temperature range for each part?

A: MMBZ5225B-TP operates from -55°C to 150°C. MMBZ5225BLT1G operates from -65°C to 150°C. The onsemi part provides a 10°C lower minimum operating temperature.

Q: Are the Zener voltage specifications identical?

A: Both parts have a nominal Zener voltage of 3 V. MMBZ5225BLT1G specifies ±5% tolerance. MMBZ5225B-TP does not specify tolerance in the provided data.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes, from a mechanical and electrical standpoint. Both use identical SOT-23-3 packages and share the same pinout. Circuit design must account for the 225 mW power limit when using MMBZ5225BLT1G.