CLL4704 BK Zener Diode 17V 500mW Equivalent & Substitute Parts

Part Overview

The CLL4704 BK is a Zener diode rated at 17 V nominal voltage with 500 mW maximum power dissipation, manufactured by Central Semiconductor Corp in the SOD-80 (DO-213AC, MINI-MELF) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The substitute part CMHZ4704 BK maintains identical electrical specifications while offering active product status and improved availability.

Substiute Parts

CLL4704 BK

Central Semiconductor CorpIn Stock: 1145CLL4704 BK Datasheet

Current PartRFQ

CMHZ4704 BK

Central Semiconductor CorpIn Stock: 873CMHZ4704 BK Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4704 BK is determined by strict equivalence across the following electrical parameters:

• Zener voltage: 17 V nominal
• Tolerance: ±5%
• Maximum power dissipation: 500 mW
• Reverse leakage current: 50 nA @ 12.9 V
• Forward voltage: 1.5 V @ 100 mA

The primary substitute, CMHZ4704 BK, satisfies all electrical requirements with identical specifications. The difference between these parts is limited to package format (SOD-80 versus SOD-123) and maximum operating temperature range (200°C versus 150°C). Both parts are surface mount Zener diodes within the same product family from Central Semiconductor Corp.

Parameter Comparison

Engineering Selection Recommendations

The CMHZ4704 BK is the direct electrical equivalent to the obsolete CLL4704 BK. Selection of CMHZ4704 BK is appropriate for applications where the SOD-123 package footprint is compatible with circuit board layout requirements. The CMHZ4704 BK offers active product status and REACH compliance, ensuring long-term supply chain viability.

Applications operating within the -65°C to 150°C temperature range will experience identical performance between both parts. Designs requiring operation above 150°C junction temperature must retain the CLL4704 BK or identify alternative solutions, as the CMHZ4704 BK maximum operating temperature is limited to 150°C.

Both parts carry identical export classification (EAR99) and tariff codes (8541.10.0050), presenting no regulatory differentiation for procurement purposes.

Frequently Asked Questions (FAQ)

Q: Can CMHZ4704 BK directly replace CLL4704 BK in existing designs?

A: Electrical replacement is direct when circuit board layout accommodates the SOD-123 package. The SOD-123 package is smaller than SOD-80, requiring verification of PCB footprint compatibility. All electrical parameters remain identical.

Q: What is the primary difference between CLL4704 BK and CMHZ4704 BK?

A: The parts differ in package format (SOD-80 versus SOD-123) and maximum operating temperature (200°C versus 150°C). Electrical specifications for Zener voltage, power rating, and leakage current are identical.

Q: Is CMHZ4704 BK suitable for high-temperature applications?

A: CMHZ4704 BK operates to 150°C junction temperature. Applications requiring operation above 150°C must use CLL4704 BK or identify alternative components rated for higher temperatures.

Q: What is the inventory status of these parts?

A: CLL4704 BK (obsolete status) has 1055 pieces in stock. CMHZ4704 BK (active status) has 794 pieces in stock. Active product status indicates ongoing manufacturing availability for CMHZ4704 BK.

Q: Are there compliance or regulatory differences between these parts?

A: Both parts carry identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications. CMHZ4704 BK includes REACH Unaffected status, confirming compliance with EU chemical regulations.

Q: What package considerations apply to substitution?

A: CLL4704 BK uses SOD-80 (DO-213AC, MINI-MELF) package. CMHZ4704 BK uses SOD-123 package. SOD-123 is a smaller package requiring PCB footprint redesign. Verify land pattern compatibility before implementation.