CLL4694C TR Equivalent & Substitute Parts

Part Overview

The CLL4694C TR is a 5 W Zener diode manufactured by Central Semiconductor Corp in SOD-80 (DO-213AC, MINI-MELF) surface mount packaging. This component is classified as obsolete, indicating discontinued production and limited availability for new designs. The part operates across a temperature range of -65°C to 200°C (TJ) with ±5% tolerance specifications. Due to its obsolete status, identification of functionally equivalent substitute components is necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

CLL4694C TR

Central Semiconductor CorpIn Stock: 1117CLL4694C TR Datasheet

Current PartRFQ

CMHZ4694C TR

Central Semiconductor CorpIn Stock: 807CMHZ4694C TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4694C TR requires evaluation based on the following critical parameters:

Power Dissipation Capability: The main part is rated for 5 W maximum power. Substitute components must meet or exceed this power rating to ensure thermal stability and prevent premature failure.

Mounting Technology: Both the main part and substitute must utilize surface mount technology to maintain compatibility with existing PCB layouts and assembly processes.

Package Form Factor: The CLL4694C TR uses SOD-80 (DO-213AC, MINI-MELF) packaging. Substitute parts must use compatible surface mount packages that fit the designated PCB footprint.

Operating Temperature Range: The main part operates from -65°C to 200°C (TJ). Substitute components must support the full operating temperature envelope required by the application.

Tolerance Specification: The ±5% tolerance specification must be maintained in substitute components to preserve circuit performance and design margins.

Regulatory Compliance: Both the main part and substitutes are classified under ECCN EAR99 and HTSUS 8541.10.0050, indicating equivalent export control and tariff classifications.

The identified substitute part (CMHZ4694C TR) shares the same manufacturer, category classification, tolerance, and regulatory status. However, critical differences exist in power rating, package form factor, and maximum operating temperature that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The CLL4694C TR is classified as obsolete, while the CMHZ4694C TR is in active production status. For applications requiring long-term component availability and supply chain continuity, the active status of the substitute part provides a significant advantage.

Power Rating Evaluation: The substitute part (CMHZ4694C TR) is rated at 500 mW, which represents a 90% reduction in maximum power dissipation compared to the 5 W main part. Applications requiring the full 5 W power handling capability cannot use this substitute without thermal management modifications or circuit redesign.

Package Compatibility: The main part uses SOD-80 packaging while the substitute uses SOD-123 packaging. These are distinct form factors with different PCB footprints. Direct substitution on existing PCBs is not possible without layout modifications and re-qualification of the assembly process.

Temperature Range Limitation: The substitute part operates to a maximum junction temperature of 150°C, compared to 200°C for the main part. Applications operating near the upper temperature limit of the original design may exceed the thermal specifications of the substitute.

Regulatory Alignment: Both parts share identical ECCN and HTSUS classifications, ensuring equivalent compliance status for export control and tariff purposes.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4694C TR be used as a direct replacement for the CLL4694C TR on existing PCBs?

A: No. The CMHZ4694C TR uses SOD-123 packaging while the CLL4694C TR uses SOD-80 packaging. These packages have different physical dimensions and PCB footprints. Direct substitution requires PCB layout modification and re-qualification of the assembly process.

Q: What is the primary limitation of using CMHZ4694C TR as a substitute?

A: The substitute part has a maximum power rating of 500 mW compared to 5 W for the main part. Applications requiring full 5 W power dissipation capability cannot use this substitute without circuit redesign or additional thermal management measures.

Q: Does the substitute part operate across the same temperature range as the main part?

A: No. The CMHZ4694C TR operates from -65°C to 150°C (TJ), while the CLL4694C TR operates from -65°C to 200°C (TJ). The substitute has a 50°C lower maximum junction temperature rating. Applications requiring operation above 150°C cannot use this substitute.

Q: Are the tolerance specifications identical between the main part and substitute?

A: Yes. Both the CLL4694C TR and CMHZ4694C TR maintain ±5% tolerance specifications, ensuring equivalent precision in voltage regulation and circuit performance.

Q: What is the significance of the product status difference?

A: The CLL4694C TR is obsolete (discontinued production), while the CMHZ4694C TR is active (in current production). The active status of the substitute provides better long-term availability and supply chain reliability for new applications and ongoing support.

Q: Are the forward voltage characteristics comparable between these parts?

A: The forward voltage specifications are measured under different conditions. The main part specifies 1.2 V @ 1 A, while the substitute specifies 1.5 V @ 100 mA. Direct comparison requires evaluation under identical test conditions and application current levels.

Q: Do both parts share the same regulatory classifications?

A: Yes. Both the CLL4694C TR and CMHZ4694C TR are classified under ECCN EAR99 and HTSUS 8541.10.0050, indicating identical export control and tariff treatment.