CLL4702 TR Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4702 TR is a 15 V, 500 mW Zener diode manufactured by Central Semiconductor Corp in SOD-80 (DO-213AC, MINI-MELF) surface mount packaging. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part operates across a temperature range of -65°C to 200°C and maintains ±5% voltage tolerance with specified reverse leakage characteristics.

Substiute Parts

CLL4702 TR

Central Semiconductor CorpIn Stock: 770CLL4702 TR Datasheet

Current PartRFQ

CMHZ4702 TR

Central Semiconductor CorpIn Stock: 900CMHZ4702 TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4702 TR is determined by electrical parameter equivalence and mechanical compatibility. The primary substitution criteria are:

Electrical Parameters (Must Match):

• Zener voltage: 15 V nominal
• Power dissipation rating: 500 mW minimum
• Voltage tolerance: ±5%
• Reverse leakage current: 50 nA @ 11.4 V
• Forward voltage: 1.5 V @ 100 mA maximum

Mechanical Parameters (Must Be Compatible):

• Surface mount packaging technology
• Package footprint compatibility with design layout

The CMHZ4702 TR qualifies as a direct electrical equivalent with identical zener voltage, power rating, tolerance, and leakage specifications. The primary distinction is packaging format (SOD-123 versus SOD-80) and operating temperature range, which affects mechanical and thermal design considerations.

Parameter Comparison

Engineering Selection Recommendations

The CMHZ4702 TR is the primary active equivalent for the obsolete CLL4702 TR. Both components share identical electrical specifications for zener voltage, power dissipation, tolerance, reverse leakage, and forward voltage characteristics.

Design Considerations:

The CMHZ4702 TR operates across a reduced temperature range (-65°C to 150°C) compared to the CLL4702 TR (-65°C to 200°C). Applications requiring operation above 150°C junction temperature require thermal analysis to confirm the CMHZ4702 TR remains within acceptable operating limits or necessitate alternative component selection.

The SOD-123 package of the CMHZ4702 TR differs mechanically from the SOD-80 package of the CLL4702 TR. PCB layout modifications are required to accommodate the different footprint. Both packages are surface mount technologies suitable for automated assembly processes.

The CMHZ4702 TR maintains active product status with current inventory availability, eliminating supply chain constraints associated with the obsolete CLL4702 TR.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4702 TR directly replace the CLL4702 TR in existing designs?

A: Electrical substitution is valid. The CMHZ4702 TR provides identical zener voltage (15 V), power rating (500 mW), tolerance (±5%), reverse leakage (50 nA @ 11.4 V), and forward voltage (1.5 V @ 100 mA) specifications. Mechanical substitution requires PCB layout modification due to different package formats (SOD-123 versus SOD-80). Temperature range reduction from 200°C to 150°C must be evaluated for specific applications.

Q: What is the primary difference between CLL4702 TR and CMHZ4702 TR?

A: The components are electrically equivalent with identical zener specifications. The primary differences are: (1) package format—SOD-80 versus SOD-123; (2) operating temperature range—-65°C to 200°C versus -65°C to 150°C; (3) product status—obsolete versus active.

Q: Are there package compatibility considerations?

A: Yes. SOD-80 and SOD-123 packages have different physical dimensions and PCB footprints. Design layout must be modified to accommodate the selected package. Both are surface mount packages suitable for reflow soldering processes.

Q: What certifications apply to the CMHZ4702 TR?

A: The CMHZ4702 TR carries REACH Unaffected status and EAR99 export classification, matching the regulatory framework of the CLL4702 TR (EAR99, HTSUS 8541.10.0050).

Q: Is the CMHZ4702 TR suitable for high-temperature applications?

A: The CMHZ4702 TR operates to 150°C junction temperature. Applications requiring sustained operation above 150°C require thermal design verification or alternative component selection. The obsolete CLL4702 TR specified operation to 200°C, which may be necessary for specific high-temperature applications.