CLL5233B BK Equivalent & Substitute Parts

Part Overview

The CLL5233B BK is a Zener diode rated at 6 V, 500 mW, manufactured by Central Semiconductor Corp in SOD-80 surface mount packaging. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. The part operates across a temperature range of -65°C to 200°C with ±5% voltage tolerance and is suitable for voltage regulation and protection applications in surface mount assemblies.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	6	V
Power - Maximum	500	mW
Tolerance	±5	%
Impedance (Maximum)	7	Ohms
Current - Reverse Leakage @ Vr	5	µA @ 3.5 V
Voltage - Forward (Maximum) @ If	1.25	V @ 200 mA
Operating Temperature Range	-65 to 200	°C
Mounting Type	Surface Mount	—
Package / Case	DO-213AC, MINI-MELF, SOD-80	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the CLL5233B BK is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

Zener voltage: 6 V nominal
Power dissipation: 500 mW maximum
Voltage tolerance: ±5%
Impedance (maximum): 7 Ohms
Reverse leakage current: 5 µA @ 3.5 V
Package type: SOD-80 (DO-213AC, MINI-MELF)
Mounting configuration: Surface mount

The substitute part TZM5233B-GS08 meets all critical electrical parameters and maintains identical package specifications. Substitution is valid where these parameters are matched. No additional performance criteria beyond those listed determine substitutability for this component category.

Parameter Comparison

Parameter	CLL5233B BK	TZM5233B-GS08	Match Status
Manufacturer	Central Semiconductor Corp	Vishay General Semiconductor - Diodes Division	Different
Voltage - Zener (Nominal)	6 V	6 V	Equivalent
Tolerance	±5%	±5%	Equivalent
Power - Maximum	500 mW	500 mW	Equivalent
Impedance (Maximum)	7 Ohms	7 Ohms	Equivalent
Current - Reverse Leakage @ Vr	5 µA @ 3.5 V	5 µA @ 3.5 V	Equivalent
Voltage - Forward (Maximum) @ If	1.25 V @ 200 mA	1.1 V @ 200 mA	TZM5233B-GS08 Lower
Operating Temperature Range	-65°C to 200°C	-65°C to 175°C	CLL5233B BK Extended
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	Equivalent
Product Status	Obsolete	Active	Substitute Active
RoHS Status	Request inventory verification	ROHS3 Compliant	Substitute Compliant
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent

Engineering Selection Recommendations

The TZM5233B-GS08 manufactured by Vishay General Semiconductor - Diodes Division is the designated substitute for the obsolete CLL5233B BK. Selection is based on the following factors:

Product Status: The CLL5233B BK is classified as obsolete. The TZM5233B-GS08 maintains active product status, ensuring long-term availability and manufacturing support.

Electrical Equivalence: All critical electrical parameters match specification: 6 V zener voltage, 500 mW power rating, ±5% tolerance, 7 Ohms maximum impedance, and 5 µA reverse leakage current at 3.5 V.

Package Compatibility: Both components use identical SOD-80 (DO-213AC, MINI-MELF) surface mount packaging, enabling direct board-level substitution without layout modification.

Compliance Status: The TZM5233B-GS08 is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The CLL5233B BK RoHS status requires inventory verification.

Temperature Operating Range: The CLL5233B BK operates to 200°C maximum; the TZM5233B-GS08 operates to 175°C maximum. Applications requiring operation above 175°C require design review.

Forward Voltage Characteristic: The TZM5233B-GS08 exhibits lower forward voltage (1.1 V @ 200 mA) compared to the CLL5233B BK (1.25 V @ 200 mA), resulting in reduced power dissipation in forward-biased conditions.

Frequently Asked Questions (FAQ)

Q: Can the TZM5233B-GS08 be used as a direct replacement for the CLL5233B BK?

A: Yes. The TZM5233B-GS08 meets all critical electrical specifications (6 V zener voltage, 500 mW power, ±5% tolerance, 7 Ohms impedance) and uses identical SOD-80 surface mount packaging. Direct substitution is valid for applications operating within the TZM5233B-GS08 temperature range of -65°C to 175°C.

Q: What is the difference in operating temperature range between these parts?

A: The CLL5233B BK operates from -65°C to 200°C. The TZM5233B-GS08 operates from -65°C to 175°C. Applications requiring operation above 175°C cannot use the TZM5233B-GS08 as a substitute.

Q: Are there packaging differences between the CLL5233B BK and TZM5233B-GS08?

A: No. Both components use SOD-80 (DO-213AC, MINI-MELF) surface mount packaging. The TZM5233B-GS08 is supplied in Tape & Reel (TR) format, while the CLL5233B BK packaging format is not specified in available data.

Q: What is the significance of the lower forward voltage in the TZM5233B-GS08?

A: The TZM5233B-GS08 exhibits forward voltage of 1.1 V @ 200 mA compared to 1.25 V @ 200 mA for the CLL5233B BK. This 0.15 V difference results in lower power dissipation when the diode conducts in forward bias, which may improve thermal performance in applications with significant forward current.

Q: Is the TZM5233B-GS08 compliant with current regulatory standards?

A: Yes. The TZM5233B-GS08 is ROHS3 compliant and REACH unaffected. The CLL5233B BK RoHS compliance status requires inventory verification.

Q: Why is the CLL5233B BK classified as obsolete?

A: The CLL5233B BK is listed as obsolete by the manufacturer. The TZM5233B-GS08 is the active equivalent, ensuring continued availability and manufacturing support for new designs and production requirements.

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