CLL4680 BK TIN/LEAD Equivalent & Substitute Parts

Part Overview

The CLL4680 BK TIN/LEAD is a surface mount Zener diode manufactured by Central Semiconductor Corp, rated at 2.2 V nominal with 500 mW maximum power dissipation and ±5% tolerance. The device is packaged in DO-213AC (MINI-MELF, SOD-80) configuration and operates across a temperature range of -65°C to 200°C. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

CLL4680 BK TIN/LEAD

Central Semiconductor CorpIn Stock: 3117CLL4680 BK TIN/LEAD Datasheet

Current PartRFQ

CMHZ4680 BK TIN/LEAD

Central Semiconductor CorpIn Stock: 1014CMHZ4680 BK TIN/LEAD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4680 BK TIN/LEAD is determined by electrical parameter equivalence and physical compatibility. The critical parameters governing substitution are:

• Zener Voltage (Vz): 2.2 V nominal with ±5% tolerance
• Power Dissipation: 500 mW maximum
• Reverse Leakage Current: 4 µA @ 1 V
• Forward Voltage: 1.5 V @ 100 mA
• Mounting Type: Surface Mount configuration
• Operating Temperature Range: Minimum -65°C to 200°C

The CMHZ4680 BK TIN/LEAD meets all electrical specifications identically. However, the package configuration differs: the substitute uses SOD-123 instead of SOD-80 (DO-213AC). This package difference requires physical board layout modification and is the primary consideration for substitution feasibility. The substitute operates at a reduced maximum junction temperature of 150°C versus the original 200°C, which may impact thermal performance in high-temperature applications.

Parameter Comparison

Engineering Selection Recommendations

The CMHZ4680 BK TIN/LEAD is electrically equivalent to the CLL4680 BK TIN/LEAD across all specified electrical parameters. Both devices are manufactured by Central Semiconductor Corp and share identical Zener voltage, power rating, tolerance, reverse leakage current, and forward voltage characteristics.

The primary substitution constraint is the package format change from SOD-80 (DO-213AC, MINI-MELF) to SOD-123. This requires physical board layout redesign and footprint modification. The substitute part is currently in active production status, ensuring ongoing availability compared to the obsolete original part.

The reduced maximum junction temperature of the substitute (150°C versus 200°C) must be evaluated against the thermal environment of the application. Applications operating consistently above 150°C junction temperature cannot use the CMHZ4680 as a direct substitute without thermal analysis and potential circuit redesign.

The CLL4680 is RoHS non-compliant, while the CMHZ4680 is REACH Unaffected. Regulatory compliance requirements should be considered in the selection process.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4680 BK TIN/LEAD be used as a direct replacement for the CLL4680 BK TIN/LEAD?

A: The CMHZ4680 is electrically equivalent but requires physical board layout modification due to package format differences (SOD-123 versus SOD-80). Direct socket substitution is not possible without footprint redesign.

Q: What is the primary difference between these two parts?

A: The electrical specifications are identical. The main differences are package configuration (SOD-123 versus SOD-80) and maximum junction temperature rating (150°C versus 200°C).

Q: Does the package change affect circuit performance?

A: Package format does not affect electrical performance. However, SOD-123 and SOD-80 have different physical dimensions and thermal characteristics. Board layout must be modified to accommodate the new package footprint.

Q: Is the CMHZ4680 suitable for high-temperature applications?

A: The CMHZ4680 operates to a maximum junction temperature of 150°C. Applications requiring operation above this temperature must use the original CLL4680 or identify alternative parts with higher temperature ratings.

Q: Why is the CLL4680 listed as obsolete?

A: The CLL4680 is no longer in active production. The CMHZ4680 represents the current active equivalent from the same manufacturer.

Q: Are there any compliance differences between these parts?

A: The CLL4680 is RoHS non-compliant, while the CMHZ4680 is REACH Unaffected. Applications subject to RoHS requirements should use the CMHZ4680.

Q: What are the critical electrical parameters for substitution?

A: Zener voltage (2.2 V), power rating (500 mW), tolerance (±5%), reverse leakage current (4 µA @ 1 V), and forward voltage (1.5 V @ 100 mA) must remain constant for functional equivalence.