CLL4680 BK Equivalent & Substitute Parts

Part Overview

The CLL4680 BK is a Zener diode rated at 2.2 V with 500 mW power dissipation in a SOD-80 (DO-213AC, MINI-MELF) surface mount package. This component is classified as obsolete, indicating discontinued production and limited availability for new designs. Identification of equivalent substitute parts is necessary to maintain supply chain continuity and support ongoing production requirements for applications utilizing this Zener diode specification.

Substiute Parts

CLL4680 BK

Central Semiconductor CorpIn Stock: 816CLL4680 BK Datasheet

Current PartRFQ

CMHZ4680 BK

Central Semiconductor CorpIn Stock: 1171CMHZ4680 BK Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

Electrical Parameters (Must Match):

• Zener voltage: 2.2 V nominal
• Tolerance: ±5%
• Power rating: 500 mW minimum
• Reverse leakage current: 4 µA @ 1 V maximum
• Forward voltage: 1.5 V @ 100 mA maximum

Mechanical Considerations:

• Surface mount technology requirement
• Package form factor (SOD-80 or compatible alternatives)

The CMHZ4680 BK meets all electrical specifications of the CLL4680 BK. The primary difference is the package format: CMHZ4680 BK utilizes SOD-123 packaging instead of SOD-80. This represents a mechanical substitution requiring PCB layout modification. The operating temperature range of CMHZ4680 BK extends to 150°C maximum junction temperature, which is lower than the CLL4680 BK specification of 200°C.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: CMHZ4680 BK

The CMHZ4680 BK is the direct electrical equivalent to the CLL4680 BK, manufactured by the same supplier (Central Semiconductor Corp) and maintains active production status. All critical electrical parameters—Zener voltage, tolerance, power dissipation, reverse leakage, and forward voltage—are identical.

Substitution Constraints:

1. Package Modification Required: The CMHZ4680 BK uses SOD-123 packaging, requiring PCB layout redesign compared to the SOD-80 footprint of the CLL4680 BK. Physical dimensions and land pattern differ between these package types.

2. Operating Temperature Limitation: The CMHZ4680 BK maximum junction temperature is 150°C, compared to 200°C for the CLL4680 BK. Applications requiring operation above 150°C junction temperature cannot use this substitute without thermal analysis confirmation.

3. Supply Availability: The CMHZ4680 BK has 1088 pieces in stock versus 728 pieces for the obsolete CLL4680 BK, providing improved supply continuity.

Compliance Status: Both parts carry ECCN EAR99 classification and HTSUS code 8541.10.0050. The CMHZ4680 BK includes REACH Unaffected status documentation.

Frequently Asked Questions (FAQ)

Q: Can CMHZ4680 BK directly replace CLL4680 BK without PCB modification?

A: No. While electrically equivalent, the CMHZ4680 BK uses SOD-123 packaging versus the SOD-80 package of CLL4680 BK. Different physical dimensions and land patterns require PCB layout redesign.

Q: Are the electrical specifications identical between CLL4680 BK and CMHZ4680 BK?

A: Yes. Both components share identical Zener voltage (2.2 V), tolerance (±5%), power rating (500 mW), reverse leakage current (4 µA @ 1 V), and forward voltage (1.5 V @ 100 mA) specifications.

Q: What is the temperature difference between these parts?

A: The CLL4680 BK operates from -65°C to 200°C junction temperature, while CMHZ4680 BK operates from -65°C to 150°C. Applications with maximum junction temperatures exceeding 150°C require thermal evaluation before substitution.

Q: Why is CLL4680 BK listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The CMHZ4680 BK represents the active production alternative with equivalent electrical performance.

Q: What package types are used by each part?

A: CLL4680 BK uses SOD-80 (also designated DO-213AC or MINI-MELF). CMHZ4680 BK uses SOD-123, a smaller surface mount package format.

Q: Are there cross-references listed for CMHZ4680 BK?

A: Yes. The CMHZ4680 BK substitutes for SZMMSZ4680ET1G, MMSZ4680T1G, and SZMMSZ4680T1G, indicating compatibility with these alternative part numbers from other manufacturers.

Q: What is the inventory status for substitution planning?

A: CLL4680 BK has 728 pieces in stock (obsolete status). CMHZ4680 BK has 1088 pieces available with active production status, providing improved long-term supply security.