CZ5386B BK Zener Diode Equivalent & Substitute Parts

Part Overview

The CZ5386B BK is a 180 V, 5 W Zener diode manufactured by Central Semiconductor Corp in a through-hole DO-201 axial package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The substitute part 1N5386BG, manufactured by onsemi, provides electrical and mechanical compatibility for applications requiring this voltage regulation specification.

Substiute Parts

CZ5386B BK

Central Semiconductor CorpIn Stock: 1004CZ5386B BK Datasheet

Current PartRFQ

1N5386BG

onsemiIn Stock: 26301N5386BG Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CZ5386B BK with the 1N5386BG is based on matching the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Zener voltage (Vz): 180 V nominal
• Voltage tolerance: ±5%
• Maximum power dissipation: 5 W
• Impedance (Zzt): 430 Ohms maximum
• Reverse leakage current: 500 nA @ 137 V
• Forward voltage: 1.2 V maximum @ 1 A
• Operating temperature range: -65°C to 200°C

Mechanical Compatibility:

• Mounting type: Through hole
• Package configuration: Axial lead

Both parts satisfy these parameters identically, establishing functional equivalence for voltage regulation applications within the specified operating conditions.

Parameter Comparison

Engineering Selection Recommendations

The 1N5386BG manufactured by onsemi is the direct functional equivalent for the obsolete CZ5386B BK. Selection of the onsemi part is supported by the following factors:

Product Status: The 1N5386BG maintains active product status, ensuring ongoing availability and manufacturing support. The CZ5386B BK is obsolete, limiting future procurement options.

Compliance and Certifications: The 1N5386BG is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement. Both parts share identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications.

Electrical and Mechanical Compatibility: All specified electrical parameters and mechanical dimensions are identical between the two parts, enabling direct substitution without circuit redesign or performance degradation.

Inventory Availability: The 1N5386BG is available in higher quantities (2600 pcs) compared to the CZ5386B BK (936 pcs), supporting production continuity and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the 1N5386BG directly replace the CZ5386B BK in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including zener voltage, power rating, impedance, leakage current, forward voltage, and operating temperature range. Direct substitution is supported without circuit modification.

Q: What is the difference between the DO-201AA and T-18 package designations?

A: Both designations refer to axial lead through-hole packages with identical mechanical and electrical performance. The DO-201AA and T-18 are equivalent package standards for this component category.

Q: Why is the CZ5386B BK listed as obsolete?

A: Obsolescence indicates that Central Semiconductor Corp has discontinued manufacturing this part. The 1N5386BG provides continued access to equivalent functionality from an active manufacturer.

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

A: The 1N5386BG includes explicit RoHS3 compliance and REACH unaffected status certifications. Both parts share identical ECCN and HTSUS classifications. Current procurement standards favor the 1N5386BG due to documented compliance status.

Q: What is the significance of the ±5% tolerance specification?

A: The ±5% tolerance defines the acceptable variation range of the zener voltage from the nominal 180 V specification. Both parts maintain this tolerance, ensuring consistent voltage regulation performance across the specified operating range.

Q: Can these parts be used in high-temperature applications?

A: Yes. Both parts are rated for operating temperatures up to 200°C (TJ), supporting applications requiring elevated temperature operation within the specified range.