CLL4116 BK Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4116 BK is a 24 V, 500 mW Zener diode manufactured by Central Semiconductor Corp in the 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 and substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and support ongoing production requirements for applications utilizing this Zener diode specification.

Substiute Parts

CLL4116 BK

Central Semiconductor CorpIn Stock: 868CLL4116 BK Datasheet

Current PartRFQ

CMHZ4116 BK

Central Semiconductor CorpIn Stock: 919CMHZ4116 BK Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CLL4116 BK is determined by electrical parameter equivalence and mechanical compatibility. The primary substitution criteria are:

Electrical Parameters (Must Match):

• Zener voltage: 24 V nominal
• Tolerance: ±5%
• Power rating: 500 mW minimum
• Reverse leakage current: 10 nA @ 18.3 V

Mechanical Parameters (Must Be Compatible):

• Surface mount technology
• Package form factor suitable for PCB integration

The CMHZ4116 BK qualifies as a direct substitute based on identical electrical specifications. Variations in impedance, forward voltage, and operating temperature range do not preclude substitution when the primary electrical and thermal requirements of the application are satisfied within the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

The CMHZ4116 BK is the primary substitute for the obsolete CLL4116 BK. Both components are manufactured by Central Semiconductor Corp and share identical electrical specifications for Zener voltage, tolerance, power rating, and reverse leakage current. The CMHZ4116 BK maintains active product status, ensuring ongoing availability and supply chain support.

The CMHZ4116 BK features a lower maximum impedance (150 Ohms versus 200 Ohms), which provides improved voltage regulation characteristics. The operating temperature range of the CMHZ4116 BK extends to 150°C, which is lower than the CLL4116 BK maximum of 200°C; this difference must be evaluated against specific application thermal requirements.

The package transition from SOD-80 to SOD-123 requires PCB layout modification. Both packages are industry-standard surface mount formats with established manufacturing processes. The SOD-123 package is widely supported by automated assembly equipment and component suppliers.

Selection of the CMHZ4116 BK is appropriate for applications where the 150°C maximum junction temperature satisfies thermal design constraints and where PCB layout can accommodate the SOD-123 package footprint.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4116 BK directly replace the CLL4116 BK without circuit modification?

A: The CMHZ4116 BK provides electrical equivalence in Zener voltage, tolerance, power rating, and reverse leakage specifications. PCB layout modification is required due to package change from SOD-80 to SOD-123. Circuit performance remains equivalent when thermal operating conditions remain within the CMHZ4116 BK specification of -65°C to 150°C junction temperature.

Q: What is the significance of the impedance difference between CLL4116 BK (200 Ohms) and CMHZ4116 BK (150 Ohms)?

A: Lower impedance in the CMHZ4116 BK results in improved voltage regulation and reduced output impedance across the operating current range. This characteristic is beneficial for applications requiring stable voltage reference performance. The lower impedance does not create incompatibility; it represents an improvement in regulation characteristics.

Q: Are there package compatibility considerations when transitioning from SOD-80 to SOD-123?

A: SOD-80 and SOD-123 are distinct surface mount packages with different footprints and land patterns. PCB redesign is required to accommodate the SOD-123 package. Both packages are standard industry formats with established manufacturing support. Verify PCB layout space availability and reflow soldering process compatibility with the new package geometry.

Q: What is the impact of the reduced operating temperature range in the CMHZ4116 BK?

A: The CMHZ4116 BK maximum junction temperature is 150°C compared to 200°C for the CLL4116 BK. Applications operating at junction temperatures above 150°C require thermal analysis to confirm the CMHZ4116 BK is unsuitable. For applications with maximum junction temperatures at or below 150°C, the CMHZ4116 BK operates within specification.

Q: Is the CMHZ4116 BK suitable for new design applications?

A: The CMHZ4116 BK maintains active product status with established supply chain availability. This component is appropriate for new designs requiring 24 V, 500 mW Zener diode functionality in surface mount configuration. Verify thermal and package requirements align with application specifications.