CMPZ5253B TR PBFREE Equivalent & Substitute Parts

Part Overview

The CMPZ5253B TR PBFREE is a surface mount Zener diode manufactured by Central Semiconductor Corp, rated at 25 V nominal Zener voltage with 350 mW maximum power dissipation. The device is packaged in SOT-23 (TO-236-3) configuration and is ROHS3 compliant with unlimited moisture sensitivity level. This part is currently in active production status with 1558 pieces available in inventory. Equivalent and substitute parts are identified based on matching electrical specifications and mechanical compatibility within the Zener diode category.

Substiute Parts

CMPZ5253B TR PBFREE

Central Semiconductor CorpIn Stock: 1610CMPZ5253B TR PBFREE Datasheet

Current PartRFQ

MMBZ5253BLT1G

onsemiIn Stock: 3116MMBZ5253BLT1G Datasheet

MFR RecommendedRFQ

SZMMBZ5253BLT1G

onsemiIn Stock: 13127SZMMBZ5253BLT1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMPZ5253B TR PBFREE are identified based on the following critical parameters that determine functional equivalence:

Matching Criteria:

• Zener voltage (Nom): 25 V
• Voltage tolerance: ±5%
• Impedance (Max): 35 Ohms
• Reverse leakage current: 100 nA @ 19 V
• Forward voltage: 900 mV @ 10 mA
• Operating temperature range: -65°C to 150°C
• Package type: SOT-23-3 (TO-236-3)
• Mounting type: Surface Mount
• RoHS compliance: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

Substitution Constraint: The CMPZ5253B TR PBFREE has a maximum power rating of 350 mW. Substitute parts with lower maximum power ratings (225 mW) remain functionally equivalent when the application circuit does not require power dissipation exceeding the substitute part's rating. All identified substitutes maintain identical electrical characteristics for Zener voltage, tolerance, impedance, leakage current, and forward voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

MMBZ5253BLT1G (onsemi): This substitute part is suitable for applications where the 225 mW power rating is sufficient. The part maintains all critical electrical parameters identical to the CMPZ5253B TR PBFREE, including Zener voltage, tolerance, impedance, and leakage characteristics. ROHS3 compliance and unlimited MSL rating ensure compatibility with standard manufacturing and storage conditions. This part is in active production with 3080 pieces in inventory.

SZMMBZ5253BLT1G (onsemi): This substitute part is qualified to AEC-Q101 automotive standard and carries automotive grade designation. Electrical specifications are identical to MMBZ5253BLT1G, with 225 mW maximum power rating. The automotive qualification provides additional process and reliability assurance for applications requiring automotive-grade components. This part is in active production with 13021 pieces in inventory, providing the highest stock availability among all options.

Selection Basis:

• All parts maintain identical Zener voltage (25 V) and tolerance (±5%)
• All parts maintain identical impedance (35 Ohms) and leakage current specifications
• All parts are ROHS3 compliant with unlimited MSL rating
• All parts use identical SOT-23-3 package configuration
• All parts operate across the same temperature range (-65°C to 150°C)
• Power rating differences (350 mW vs. 225 mW) determine suitability based on circuit requirements
• Automotive qualification of SZMMBZ5253BLT1G applies only to applications requiring AEC-Q101 compliance

Frequently Asked Questions (FAQ)

Q: Can MMBZ5253BLT1G or SZMMBZ5253BLT1G replace CMPZ5253B TR PBFREE in any application?

A: Substitution is valid when the application circuit does not require power dissipation exceeding 225 mW. The substitute parts maintain identical electrical specifications for Zener voltage, tolerance, impedance, leakage current, and forward voltage. If the circuit design requires the full 350 mW power rating of the CMPZ5253B TR PBFREE, substitutes with 225 mW rating are not suitable.

Q: Are the package dimensions identical between CMPZ5253B TR PBFREE and the substitute parts?

A: Yes. All parts use the SOT-23-3 package configuration, also designated as TO-236-3 or SC-59. Package dimensions and pin configurations are identical, allowing direct PCB footprint compatibility.

Q: What is the difference between MMBZ5253BLT1G and SZMMBZ5253BLT1G?

A: Both parts have identical electrical specifications and power ratings (225 mW). The primary difference is that SZMMBZ5253BLT1G carries AEC-Q101 automotive qualification and automotive grade designation. SZMMBZ5253BLT1G is required for applications subject to automotive reliability and process standards. MMBZ5253BLT1G is suitable for standard industrial and commercial applications.

Q: Are all parts ROHS3 compliant?

A: Yes. CMPZ5253B TR PBFREE, MMBZ5253BLT1G, and SZMMBZ5253BLT1G are all ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q: What is the inventory status for each part?

A: CMPZ5253B TR PBFREE has 1558 pieces in stock. MMBZ5253BLT1G has 3080 pieces in stock. SZMMBZ5253BLT1G has 13021 pieces in stock, providing the highest availability.

Q: Can I use a substitute part with lower power rating if my circuit only dissipates 150 mW?

A: Yes. If the maximum power dissipation in your circuit is 150 mW, both MMBZ5253BLT1G and SZMMBZ5253BLT1G with 225 mW ratings are suitable substitutes. The substitute part's power rating must equal or exceed the circuit's maximum power dissipation requirement.

Q: Are the forward voltage and reverse leakage specifications identical across all three parts?

A: Yes. All three parts specify 900 mV maximum forward voltage at 10 mA and 100 nA reverse leakage current at 19 V. These parameters are identical and do not vary between the main part and substitutes.