CMKZ5259B TR Equivalent & Substitute Parts

Part Overview

The CMKZ5259B TR is a Zener diode array manufactured by Central Semiconductor Corp, configured with 3 independent 39 V Zener diodes in a SOT-363 surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The part delivers 200 mW maximum power dissipation with ±5% voltage tolerance and is suitable for voltage regulation and protection applications requiring multiple independent Zener channels.

Substiute Parts

CMKZ5259B TR

Central Semiconductor CorpIn Stock: 1169CMKZ5259B TR Datasheet

Current PartRFQ

MMBZ5259BTS-7-F

Diodes IncorporatedIn Stock: 3131MMBZ5259BTS-7-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CMKZ5259B TR is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Criteria:

• Configuration: 3 Independent Zener diodes
• Nominal Zener voltage: 39 V
• Voltage tolerance: ±5%
• Maximum power dissipation: 200 mW
• Impedance (Max): 80 Ohms
• Reverse leakage current: 100 nA @ 30 V
• Forward voltage: 900 mV @ 10 mA
• Operating temperature range: -65°C ~ 150°C
• Package: SOT-363 (6-TSSOP, SC-88)
• Mounting: Surface Mount
• Compliance: ROHS3 Compliant, MSL 1

The MMBZ5259BTS-7-F from Diodes Incorporated meets all specified electrical and mechanical parameters, enabling direct functional substitution in applications requiring the CMKZ5259B TR.

Parameter Comparison

Engineering Selection Recommendations

The MMBZ5259BTS-7-F is a direct functional equivalent to the CMKZ5259B TR. Selection of the substitute part is supported by:

Product Status: The MMBZ5259BTS-7-F maintains Active product status, ensuring long-term availability and supply chain continuity compared to the Obsolete CMKZ5259B TR.

Compliance Certifications: Both parts are ROHS3 Compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting environmental and handling requirements.

Electrical Equivalence: All electrical parameters—Zener voltage, tolerance, power rating, impedance, leakage current, and forward voltage—are identical between the two parts.

Mechanical Compatibility: Both parts use the SOT-363 package with identical pinout and surface mount configuration, enabling direct PCB layout compatibility without redesign.

Regulatory Alignment: Both parts carry identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications.

Frequently Asked Questions (FAQ)

Q: Can the MMBZ5259BTS-7-F replace the CMKZ5259B TR in existing designs?

A: Yes. The MMBZ5259BTS-7-F is electrically and mechanically equivalent across all specified parameters. No circuit modifications or PCB layout changes are required for substitution.

Q: What is the difference between the CMKZ5259B TR and MMBZ5259BTS-7-F?

A: The primary difference is manufacturer and product status. The CMKZ5259B TR (Central Semiconductor) is obsolete, while the MMBZ5259BTS-7-F (Diodes Incorporated) is active. All electrical and mechanical specifications are identical.

Q: Are the packages physically identical?

A: Yes. Both parts use the SOT-363 package (6-TSSOP, SC-88). Pin configuration, lead spacing, and footprint are identical, enabling direct PCB compatibility.

Q: Does the MMBZ5259BTS-7-F meet the same compliance standards?

A: Yes. Both parts are ROHS3 Compliant with MSL 1 (Unlimited) rating. Both carry identical ECCN and HTSUS classifications.

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

A: The MMBZ5259BTS-7-F operates across -65°C to 150°C, matching the CMKZ5259B TR specification.

Q: Is the Zener voltage tolerance the same?

A: Yes. Both parts maintain ±5% Zener voltage tolerance at 39 V nominal.

Q: Can I use the MMBZ5259BTS-7-F in new designs?

A: Yes. The active product status of the MMBZ5259BTS-7-F makes it suitable for new designs requiring a 3-independent Zener diode array at 39 V, 200 mW in SOT-363 packaging.