CLL4699 BK Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4699 BK is a 12 V, 500 mW Zener diode manufactured by Central Semiconductor Corp, packaged in SOD-80 (DO-213AC, MINI-MELF) surface mount configuration. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The obsolete status of the CLL4699 BK makes substitute part selection critical for procurement continuity and long-term supply chain management.

Substiute Parts

CLL4699 BK

Central Semiconductor CorpIn Stock: 856CLL4699 BK Datasheet

Current PartRFQ

CMHZ4699 BK

Central Semiconductor CorpIn Stock: 909CMHZ4699 BK Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete CLL4699 BK is determined by electrical parameter equivalence and mechanical compatibility. The primary substitution criteria are:

Electrical Parameters (Must Match):

• Zener voltage: 12 V nominal
• Tolerance: ±5%
• Maximum power dissipation: 500 mW
• Reverse leakage current: 50 nA @ 9.1 V
• Forward voltage: 1.5 V @ 100 mA

Mechanical Parameters (Must Match):

• Surface mount configuration
• Package type compatibility

The CMHZ4699 BK satisfies all electrical parameter requirements and maintains surface mount functionality. The primary difference is package format (SOD-123 versus SOD-80) and maximum operating temperature range (-65°C ~ 150°C versus -65°C ~ 200°C). The CMHZ4699 BK carries active product status, ensuring ongoing availability and supply chain support.

Parameter Comparison

Engineering Selection Recommendations

The CMHZ4699 BK is the direct electrical equivalent to the obsolete CLL4699 BK, with identical zener voltage, tolerance, power rating, reverse leakage characteristics, and forward voltage specifications. Both components carry the same ECCN (EAR99) and HTSUS classification.

The CMHZ4699 BK is classified as active product status, providing assured long-term availability and supply chain continuity. This status contrasts with the obsolete classification of the CLL4699 BK.

The primary design consideration is package format transition from SOD-80 to SOD-123. This change requires PCB layout modification and may necessitate footprint redesign. The operating temperature range of the CMHZ4699 BK (-65°C ~ 150°C) is narrower than the CLL4699 BK (-65°C ~ 200°C). Applications requiring operation above 150°C junction temperature require evaluation against specific thermal requirements.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4699 BK directly replace the CLL4699 BK without circuit modification?

A: The CMHZ4699 BK provides electrical equivalence in all specified parameters. However, the package format differs (SOD-123 versus SOD-80), requiring PCB footprint modification. Thermal design must account for the reduced maximum operating temperature range.

Q: What is the primary reason for substituting the CLL4699 BK?

A: The CLL4699 BK is classified as obsolete. The CMHZ4699 BK is an active product with equivalent electrical specifications, ensuring procurement availability and supply chain support.

Q: Are there dimensional differences between SOD-80 and SOD-123 packages?

A: Yes. SOD-80 and SOD-123 are distinct package formats with different physical dimensions and PCB footprints. PCB layout redesign is required when transitioning between these packages.

Q: Does the operating temperature range difference affect substitution suitability?

A: The CMHZ4699 BK maximum junction temperature is 150°C, compared to 200°C for the CLL4699 BK. Applications operating above 150°C junction temperature require thermal analysis to confirm suitability.

Q: Are export compliance classifications identical between the main part and substitute?

A: Yes. Both the CLL4699 BK and CMHZ4699 BK carry ECCN EAR99 and HTSUS 8541.10.0050 classifications.

Q: What additional cross-reference parts are available for the 12 V, 500 mW zener diode specification?

A: The CMHZ4699 BK documentation references cross-compatible parts including DDZ12C-7, BZT52C12S-7-F, BZT52C12-7-F, MMSZ5242B-7-F, and DDZ12CS-7. These parts maintain the 12 V zener voltage and 500 mW power rating specifications.