CLL4680 TR Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4680 TR is a 2.2 V Zener diode rated for 500 mW maximum power dissipation in a surface mount SOD-80 (DO-213AC, MINI-MELF) package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The electrical characteristics and thermal operating range define the substitution criteria for this device category.

Substiute Parts

CLL4680 TR

Central Semiconductor CorpIn Stock: 762CLL4680 TR Datasheet

Current PartRFQ

CMHZ4680 TR

Central Semiconductor CorpIn Stock: 1003CMHZ4680 TR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4680 TR is determined by electrical parameter equivalence and package compatibility. The primary substitution criteria are:

Electrical Parameters (Must Match):

• Zener voltage: 2.2 V nominal with ±5% tolerance
• Maximum power dissipation: 500 mW
• Reverse leakage current: 4 µA @ 1 V
• Forward voltage: 1.5 V maximum @ 100 mA

Mechanical Parameters (Must Be Compatible):

• Surface mount technology
• Package form factor (SOD-80 or equivalent surface mount packages)

Product Status Consideration: The CLL4680 TR is obsolete. Active equivalent parts are required for continued component sourcing and design continuity.

Parameter Comparison

Engineering Selection Recommendations

CMHZ4680 TR as Primary Substitute:

The CMHZ4680 TR is an active equivalent from Central Semiconductor Corp with identical electrical specifications across all critical parameters: 2.2 V nominal Zener voltage, ±5% tolerance, 500 mW power rating, 4 µA reverse leakage current, and 1.5 V forward voltage. The component maintains full electrical compatibility with the obsolete CLL4680 TR.

Package Consideration:

The CMHZ4680 TR uses SOD-123 packaging instead of the original SOD-80 (MINI-MELF) package. Both are surface mount form factors with different physical dimensions and footprints. PCB layout modification is required for package transition.

Temperature Range Limitation:

The CMHZ4680 TR operates over -65°C to 150°C, compared to the CLL4680 TR range of -65°C to 200°C. Applications requiring operation above 150°C junction temperature require alternative sourcing.

Product Status:

The CMHZ4680 TR is in active production status with confirmed inventory availability (897 pieces), ensuring long-term supply continuity compared to the obsolete CLL4680 TR.

Cross-Reference Compatibility:

The CMHZ4680 TR documentation references additional equivalent part numbers: SZMMSZ4680ET1G, MMSZ4680T1G, and SZMMSZ4680T1G. These parts share identical electrical specifications and may be sourced from alternative manufacturers.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4680 TR directly replace the CLL4680 TR in existing designs?

A: Electrical substitution is direct. The CMHZ4680 TR matches all electrical parameters. However, the package change from SOD-80 to SOD-123 requires PCB footprint modification. Verify that the reduced operating temperature range (-65°C to 150°C versus -65°C to 200°C) is acceptable for the application.

Q: What is the primary difference between CLL4680 TR and CMHZ4680 TR?

A: The parts are electrically identical. The main differences are product status (obsolete versus active) and package form factor (SOD-80 versus SOD-123). The CMHZ4680 TR also has a reduced maximum junction temperature rating.

Q: Are there other manufacturers offering equivalent 2.2 V, 500 mW Zener diodes?

A: Yes. The cross-reference list includes SZMMSZ4680ET1G, MMSZ4680T1G, and SZMMSZ4680T1G, which are equivalent parts from other manufacturers with identical electrical specifications.

Q: What is the impact of the SOD-123 package change?

A: SOD-123 is a smaller surface mount package compared to SOD-80 (MINI-MELF). The physical dimensions differ, requiring new PCB footprint design. Electrical performance is unaffected. Verify component placement and thermal management in the new layout.

Q: Is the CMHZ4680 TR suitable for high-temperature applications above 150°C?

A: No. The CMHZ4680 TR maximum junction temperature is 150°C. Applications requiring operation above this temperature must source alternative parts with higher temperature ratings or use the original CLL4680 TR if available from inventory.

Q: What certifications apply to the CMHZ4680 TR?

A: The CMHZ4680 TR carries REACH Unaffected status and EAR99 export classification, matching the regulatory profile of the original CLL4680 TR.