Equivalent & Substitute Parts for CZ5386C BK Zener Diode

Part Overview

The CZ5386C BK is a 180 V, 5 W Zener diode manufactured by Central Semiconductor Corp in DO-201AA axial through-hole packaging. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The CZ5386C BK serves as a voltage regulation and transient protection element in electronic circuits requiring 180 V nominal Zener voltage with 5 W power dissipation capability.

Substiute Parts

CZ5386C BK

Central Semiconductor CorpIn Stock: 760CZ5386C BK Datasheet

Current PartRFQ

1N5386BG

onsemiIn Stock: 26301N5386BG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete CZ5386C BK is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Nominal Zener voltage: 180 V
• Maximum power dissipation: 5 W
• Mounting type: Through Hole
• Package style: Axial configuration
• Impedance (Max): 430 Ohms
• Reverse leakage current: 500 nA @ 137 V
• Forward voltage: 1.2 V @ 1 A
• Operating temperature range: -65°C to 200°C

The 1N5386BG from onsemi meets all electrical and mechanical parameters required for direct substitution. Both components share identical nominal Zener voltage, maximum power rating, impedance characteristics, leakage current specifications, and operating temperature range. The primary difference is tolerance specification (±2% for CZ5386C BK versus ±5% for 1N5386BG) and product status (obsolete versus active).

Parameter Comparison

Engineering Selection Recommendations

The 1N5386BG from onsemi is the direct electrical and mechanical equivalent for the obsolete CZ5386C BK. Selection of the 1N5386BG is supported by the following factors:

Product Status: The 1N5386BG maintains active product status with current manufacturing and distribution support, eliminating supply chain risk associated with the obsolete CZ5386C BK.

Electrical Equivalence: All critical electrical parameters match specification: 180 V nominal Zener voltage, 5 W maximum power dissipation, 430 Ohms maximum impedance, 500 nA reverse leakage current at 137 V, and 1.2 V forward voltage at 1 A. Operating temperature range is identical at -65°C to 200°C.

Mechanical Compatibility: Both components utilize axial through-hole packaging compatible with standard PCB mounting practices. The T-18 package designation for 1N5386BG corresponds to standard axial lead configuration.

Compliance: The 1N5386BG carries ROHS3 compliance certification and REACH unaffected status, meeting modern regulatory requirements.

Tolerance Consideration: The 1N5386BG specifies ±5% Zener voltage tolerance compared to ±2% for the CZ5386C BK. Circuit designs dependent on the tighter ±2% tolerance must evaluate whether the ±5% tolerance of the substitute is acceptable for the application.

Frequently Asked Questions (FAQ)

Q: Can the 1N5386BG directly replace the CZ5386C BK without circuit modification?

A: The 1N5386BG meets all electrical and mechanical parameters of the CZ5386C BK. Direct substitution is possible from an electrical standpoint. However, the tolerance specification differs (±5% versus ±2%). Circuits requiring the tighter tolerance must evaluate whether ±5% tolerance is acceptable.

Q: What is the difference between DO-201AA and T-18 axial packages?

A: Both designations refer to axial through-hole diode packages with leads extending from opposite ends of the component body. DO-201AA and T-18 are equivalent package styles suitable for identical PCB mounting configurations.

Q: Why is the CZ5386C BK classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The 1N5386BG provides an active alternative with equivalent electrical and mechanical specifications.

Q: Are there any compliance differences between the two parts?

A: The 1N5386BG carries ROHS3 compliance and REACH unaffected certification. The CZ5386C BK compliance status is not specified in available documentation. Both components share identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications.

Q: What inventory considerations apply to this substitution?

A: The 1N5386BG has 2600 pieces in stock versus 750 pieces for the CZ5386C BK. The active status and higher inventory of the 1N5386BG support improved procurement reliability.

Q: How does the ±5% tolerance of 1N5386BG affect circuit performance?

A: At 180 V nominal, ±5% tolerance results in a Zener voltage range of 171 V to 189 V. Circuit designs must confirm this range is acceptable for the intended voltage regulation or transient protection function.