CLL4685 BK TIN/LEAD Equivalent & Substitute Parts

Part Overview

The CLL4685 BK TIN/LEAD is a surface mount Zener diode manufactured by Central Semiconductor Corp, rated at 3.6 V nominal with 500 mW maximum power dissipation. This component is classified as obsolete, with 3,556 units currently in stock. Due to its obsolete status, identifying equivalent and substitute parts is necessary for ongoing design support, production continuity, and long-term component availability planning.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	3.6	V
Tolerance	±5%	%
Power - Max	500	mW
Current - Reverse Leakage @ Vr	7.5	µA @ 2 V
Voltage - Forward (Vf) (Max) @ If	1.5	V @ 100 mA
Operating Temperature Range	-65°C ~ 200°C	TJ
Mounting Type	Surface Mount	—
Package / Case	DO-213AC, MINI-MELF, SOD-80	—

Substitute Part Grouping Explanation

Substitution of the CLL4685 BK TIN/LEAD is determined by electrical and mechanical parameter alignment within the Zener diode category. The critical parameters for substitution are:

Voltage - Zener (Nom): Must equal 3.6 V
Tolerance: Must equal ±5%
Power - Max: Must equal 500 mW
Current - Reverse Leakage @ Vr: Must equal 7.5 µA @ 2 V
Voltage - Forward (Vf) (Max) @ If: Must equal 1.5 V @ 100 mA
Mounting Type: Must be Surface Mount
Package / Case: Must be compatible with surface mount footprints

The CMHZ4685 BK TIN/LEAD meets all electrical parameter requirements and maintains surface mount compatibility, though with a different package designation (SOD-123 versus SOD-80). This substitution is valid where PCB layout and footprint design accommodate the SOD-123 package format.

Parameter Comparison

Parameter	CLL4685 BK TIN/LEAD	CMHZ4685 BK TIN/LEAD	Match
Manufacturer	Central Semiconductor Corp	Central Semiconductor Corp	Yes
Category	Diodes, Zener	Diodes, Zener	Yes
Voltage - Zener (Nom)	3.6 V	3.6 V	Yes
Tolerance	±5%	±5%	Yes
Power - Max	500 mW	500 mW	Yes
Current - Reverse Leakage @ Vr	7.5 µA @ 2 V	7.5 µA @ 2 V	Yes
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 100 mA	1.5 V @ 100 mA	Yes
Mounting Type	Surface Mount	Surface Mount	Yes
Package / Case	DO-213AC, MINI-MELF, SOD-80	SOD-123	Different
Operating Temperature Range	-65°C ~ 200°C (TJ)	-65°C ~ 150°C (TJ)	Partial
Product Status	Obsolete	Active	Upgrade

Engineering Selection Recommendations

The CMHZ4685 BK TIN/LEAD is the primary substitute for the obsolete CLL4685 BK TIN/LEAD. Both components are manufactured by Central Semiconductor Corp and share identical electrical specifications across all critical parameters: Zener voltage, tolerance, power rating, reverse leakage current, and forward voltage characteristics.

Key Considerations:

Package Compatibility: The CLL4685 uses SOD-80 (MINI-MELF) packaging, while the CMHZ4685 uses SOD-123 packaging. PCB layout and footprint design must accommodate the SOD-123 package format for successful substitution.
Operating Temperature: The CLL4685 operates across -65°C to 200°C, while the CMHZ4685 operates across -65°C to 150°C. Applications requiring operation above 150°C cannot use the CMHZ4685 as a substitute.
Product Status: The CMHZ4685 is active and in production, with 799 units in stock, providing long-term availability compared to the obsolete CLL4685 status.
Compliance: The CLL4685 is RoHS non-compliant, while the CMHZ4685 is REACH Unaffected. Design requirements for RoHS compliance should be evaluated against application needs.

Frequently Asked Questions (FAQ)

Q: Can the CMHZ4685 BK TIN/LEAD directly replace the CLL4685 BK TIN/LEAD?

A: Electrical substitution is valid. The CMHZ4685 matches all electrical parameters of the CLL4685. However, the package format differs (SOD-123 versus SOD-80), requiring PCB footprint modification. Additionally, the maximum operating temperature is reduced from 200°C to 150°C.

Q: What is the primary difference between these two parts?

A: The main differences are package format (SOD-80 versus SOD-123) and maximum operating temperature (200°C versus 150°C). All electrical specifications are identical.

Q: Is the SOD-123 package smaller or larger than SOD-80?

A: SOD-123 and SOD-80 (MINI-MELF) are different package formats with distinct footprint dimensions. PCB design must accommodate the specific package selected.

Q: Can I use the CMHZ4685 in applications requiring operation above 150°C?

A: No. The CMHZ4685 is rated for operation up to 150°C maximum junction temperature. Applications requiring operation above 150°C require the CLL4685 or an alternative component rated for higher temperatures.

Q: Are there any compliance differences between these parts?

A: The CLL4685 is RoHS non-compliant, while the CMHZ4685 is REACH Unaffected. Applications subject to RoHS requirements should use the CMHZ4685 or verify compliance requirements with design specifications.

Q: What inventory levels are available for each part?

A: The CLL4685 has 3,556 units in stock (obsolete status). The CMHZ4685 has 799 units in stock (active production status).

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message