CLL4686 BK Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4686 BK is a 3.9 V Zener diode rated for 500 mW maximum power dissipation in a surface mount SOD-80 (DO-213AC, MINI-MELF) package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The substitute parts listed maintain electrical equivalence while offering improved product status and availability through active manufacturing channels.

Substiute Parts

CLL4686 BK

Central Semiconductor CorpIn Stock: 1179CLL4686 BK Datasheet

Current PartRFQ

CMHZ4686 BK

Central Semiconductor CorpIn Stock: 882CMHZ4686 BK Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4686 BK is determined by electrical parameter equivalence across the following criteria:

Electrical Equivalence Requirements:

• Zener voltage (Vz) of 3.9 V nominal with ±5% tolerance
• Maximum power dissipation of 500 mW
• Reverse leakage current of 5 µA @ 2 V
• Forward voltage (Vf) maximum of 1.5 V @ 100 mA

Mechanical Compatibility:

• Surface mount technology
• Package form factor compatibility with circuit board layout

The CMHZ4686 BK meets all electrical parameters specified for the CLL4686 BK. The primary difference is the package type (SOD-123 versus SOD-80) and operating temperature range maximum (150°C versus 200°C). The SOD-123 package is a standard surface mount form factor with established supply chain availability.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CMHZ4686 BK

The CMHZ4686 BK is the direct electrical equivalent to the CLL4686 BK, manufactured by the same supplier (Central Semiconductor Corp) with identical electrical specifications. This part is currently in active production status with established supply chain availability (779 pcs in stock).

Package Consideration:

The CMHZ4686 BK uses SOD-123 packaging instead of the SOD-80 package of the original part. Circuit board layout modifications are required to accommodate the different footprint. The SOD-123 package is a widely standardized surface mount form factor with established manufacturing and assembly processes.

Temperature Range Consideration:

The CMHZ4686 BK specifies a maximum operating temperature of 150°C (TJ) compared to 200°C (TJ) for the CLL4686 BK. Applications requiring operation above 150°C junction temperature require evaluation of thermal management and duty cycle conditions.

Compliance Status:

The CMHZ4686 BK carries REACH Unaffected status, confirming compliance with current regulatory requirements for electronic components.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4686 BK directly replace the CLL4686 BK in existing circuit designs?

A: Electrical substitution is direct. Mechanical substitution requires circuit board layout modification due to the different package footprint (SOD-123 versus SOD-80). Both packages are surface mount technologies with similar thermal characteristics.

Q: What is the significance of the operating temperature range difference?

A: The CLL4686 BK specifies -65°C to 200°C (TJ), while the CMHZ4686 BK specifies -65°C to 150°C (TJ). Applications operating at junction temperatures above 150°C require thermal analysis to confirm the CMHZ4686 BK is suitable. Most commercial and industrial applications operate within the 150°C maximum range.

Q: Are the electrical characteristics identical between these parts?

A: Yes. Both parts share identical Zener voltage (3.9 V ±5%), power rating (500 mW), reverse leakage current (5 µA @ 2 V), and forward voltage characteristics (1.5 V @ 100 mA).

Q: Why is the CLL4686 BK classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The CMHZ4686 BK represents the active equivalent part for ongoing procurement and new design implementation.

Q: What package types are available for 3.9 V 500 mW Zener diodes?

A: The CLL4686 BK uses SOD-80 (DO-213AC, MINI-MELF) packaging. The CMHZ4686 BK uses SOD-123 packaging. Both are surface mount technologies. Package selection depends on circuit board layout requirements and assembly process capabilities.

Q: Is the CMHZ4686 BK suitable for high-reliability applications?

A: The CMHZ4686 BK carries REACH Unaffected compliance status. Suitability for specific high-reliability applications depends on additional qualification requirements such as military specifications, automotive standards, or medical device classifications, which are not specified in the provided parameters.