CLL4709C TR Equivalent & Substitute Parts

Part Overview

The CLL4709C 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 wide temperature range of -65°C to 200°C and features ±5% tolerance specifications. Due to its obsolete status, identification of functionally equivalent substitute components is necessary for ongoing maintenance, repair, and design continuity in applications requiring Zener diode functionality.

Substiute Parts

CLL4709C TR

Central Semiconductor CorpIn Stock: 1127CLL4709C TR Datasheet

Current PartRFQ

CMHZ4709C TR

Central Semiconductor CorpIn Stock: 645CMHZ4709C TR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4709C TR is constrained by the following critical parameters:

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

Package and Mounting Compatibility: The CLL4709C TR uses SOD-80 (DO-213AC, MINI-MELF) surface mount packaging. Substitute parts must be compatible with existing PCB layouts and soldering processes, or layout modifications must be acceptable.

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

Tolerance Specification: The ±5% tolerance specification defines the acceptable deviation in electrical characteristics. Substitute parts must maintain equivalent tolerance levels.

Surface Mount Technology: Both the main part and substitutes must be surface mount devices to maintain manufacturing process compatibility.

The CMHZ4709C TR does not meet the power dissipation requirement (500 mW versus 5 W) and therefore cannot serve as a direct functional substitute for the CLL4709C TR in applications requiring the full 5 W power rating.

Parameter Comparison

Engineering Selection Recommendations

The CMHZ4709C TR cannot be selected as a substitute for the CLL4709C TR based on the following engineering constraints:

Power Rating Mismatch: The substitute part is rated for 500 mW maximum power dissipation, while the main part is rated for 5 W. This represents a 90% reduction in power handling capability and disqualifies the substitute for applications requiring the full 5 W rating.

Package Incompatibility: The main part uses SOD-80 packaging while the substitute uses SOD-123 packaging. These packages have different physical dimensions, pin configurations, and PCB footprints, requiring circuit board redesign for implementation.

Operating Temperature Range Limitation: The substitute part operates only to 150°C maximum junction temperature, compared to 200°C for the main part. This 50°C reduction in upper temperature limit restricts use in high-temperature applications.

Active Product Status: While the substitute part maintains active product status (indicating continued availability), the combination of power rating, package, and temperature range incompatibilities prevents its use as a direct replacement.

For applications requiring a 5 W Zener diode in SOD-80 packaging with -65°C to 200°C operating range, alternative sources or equivalent parts from other manufacturers must be evaluated based on identical electrical and mechanical specifications.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4709C TR replace the CLL4709C TR in my circuit?

A: No. The CMHZ4709C TR has a maximum power rating of 500 mW compared to 5 W for the CLL4709C TR. This 90% reduction in power dissipation capability makes it unsuitable for applications requiring the full 5 W rating. Additionally, the package types differ (SOD-123 versus SOD-80), requiring PCB redesign.

Q: What is the primary reason these parts are not interchangeable?

A: The primary incompatibility is power dissipation rating. The CLL4709C TR is designed for 5 W applications, while the CMHZ4709C TR is limited to 500 mW. Using an undersized component in a high-power application results in thermal stress, reduced reliability, and potential device failure.

Q: Are there package compatibility issues between these parts?

A: Yes. The CLL4709C TR uses SOD-80 (DO-213AC, MINI-MELF) packaging, while the CMHZ4709C TR uses SOD-123 packaging. These packages have different physical dimensions and footprints, requiring circuit board layout modifications for implementation.

Q: Does the operating temperature range differ between these parts?

A: Yes. The CLL4709C TR operates from -65°C to 200°C, while the CMHZ4709C TR operates from -65°C to 150°C. The 50°C reduction in maximum junction temperature limits the substitute part in high-temperature applications.

Q: What should I do if I need to replace an obsolete CLL4709C TR?

A: Identify the specific Zener voltage rating and power dissipation requirements of your application. Source equivalent 5 W Zener diodes in SOD-80 packaging with matching voltage specifications and -65°C to 200°C operating range from alternative manufacturers or authorized distributors.

Q: Is the tolerance specification the same for both parts?

A: Yes. Both the CLL4709C TR and CMHZ4709C TR maintain ±5% tolerance specifications. However, tolerance equivalence does not overcome the power rating, package, and temperature range incompatibilities.