CLL4694C BK Equivalent & Substitute Parts

Part Overview

The CLL4694C BK 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. Zener diodes in this power class are used for voltage regulation, overvoltage protection, and reference voltage applications in electronic circuits. Due to obsolete status, identification of functionally equivalent substitute parts is necessary for design continuity, repair operations, and component sourcing.

Substiute Parts

CLL4694C BK

Central Semiconductor CorpIn Stock: 792CLL4694C BK Datasheet

Current PartRFQ

CMHZ4694C BK

Central Semiconductor CorpIn Stock: 799CMHZ4694C BK Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4694C BK is evaluated based on the following critical parameters:

Mounting Type & Package Compatibility: Both the main part and substitute must be surface mount devices. The CLL4694C BK uses SOD-80 packaging. Substitute parts must accommodate the same or compatible PCB footprint requirements.

Power Dissipation Rating: The CLL4694C BK is rated for 5 W maximum power dissipation. Substitute parts must meet or exceed this power rating to ensure thermal performance in the application circuit.

Forward Voltage Characteristics: The CLL4694C BK specifies a maximum forward voltage of 1.2 V at 1 A forward current. Substitute parts must maintain compatible forward voltage performance to preserve circuit operation.

Operating Temperature Range: The CLL4694C BK operates from -65°C to 200°C junction temperature. Substitute parts must support this temperature envelope or a compatible subset.

Tolerance & Voltage Regulation: The ±5% tolerance specification indicates precision voltage regulation capability. Substitute parts must maintain equivalent tolerance performance.

The CMHZ4694C BK is identified as a substitute part from the same manufacturer. However, this part exhibits significant differences in power rating (500 mW versus 5 W) and package type (SOD-123 versus SOD-80), which represent material deviations from the original specification.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The CLL4694C BK is obsolete, while the CMHZ4694C BK is active. Active product status indicates ongoing manufacturer support, availability, and compliance with current regulatory standards.

Compliance & Certification: Both parts share identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications, indicating equivalent export control and tariff treatment.

Power Rating Mismatch: The CMHZ4694C BK is rated at 500 mW maximum power dissipation, which is 10 times lower than the CLL4694C BK specification of 5 W. This represents a fundamental limitation in thermal capacity and is not suitable for applications requiring the full 5 W power handling capability of the original part.

Package Incompatibility: The CLL4694C BK uses SOD-80 packaging while the CMHZ4694C BK uses SOD-123 packaging. These packages have different physical dimensions and PCB footprints, requiring circuit board redesign for mechanical compatibility.

Temperature Range Reduction: The CMHZ4694C BK operates to 150°C maximum junction temperature, compared to 200°C for the CLL4694C BK. This represents a 50°C reduction in the upper operating limit.

Forward Voltage Deviation: The CMHZ4694C BK exhibits 1.5 V maximum forward voltage at 100 mA, compared to 1.2 V at 1 A for the CLL4694C BK. This difference affects circuit performance in applications sensitive to forward voltage characteristics.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4694C BK directly replace the CLL4694C BK in existing designs?

A: No. The CMHZ4694C BK differs in three critical areas: package type (SOD-123 vs. SOD-80), power rating (500 mW vs. 5 W), and maximum operating temperature (150°C vs. 200°C). Direct substitution requires PCB redesign and circuit re-evaluation.

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

A: The power dissipation rating of 500 mW is insufficient for applications requiring 5 W thermal capacity. This part is suitable only for low-power applications with reduced current and power requirements.

Q: Are the electrical characteristics compatible between these parts?

A: Both parts share ±5% tolerance and are manufactured by Central Semiconductor Corp. However, forward voltage specifications differ (1.2 V vs. 1.5 V), and the CMHZ4694C BK is specified at lower current levels (100 mA vs. 1 A).

Q: Does the package difference affect PCB layout?

A: Yes. SOD-80 and SOD-123 packages have different physical dimensions and land patterns. PCB footprint modification is required for mechanical and electrical compatibility.

Q: Is the CMHZ4694C BK suitable for high-temperature applications?

A: The CMHZ4694C BK operates to 150°C junction temperature, which is 50°C lower than the CLL4694C BK. Applications requiring operation above 150°C cannot use this substitute.

Q: What is the significance of active versus obsolete product status?

A: Active status (CMHZ4694C BK) indicates ongoing production, manufacturer support, and compliance with current standards. Obsolete status (CLL4694C BK) indicates discontinued production and limited future availability.

Q: Are export control classifications identical?

A: Yes. Both parts carry ECCN EAR99 and HTSUS 8541.10.0050 classifications, indicating equivalent regulatory treatment for export purposes.