Equivalent & Substitute Parts Reference: CLL4617 BK

Part Overview

The Central Semiconductor Corp CLL4617 BK is a Zener diode designed for surface mount applications requiring a nominal Zener voltage of 2.4 V, a maximum power rating of 500 mW, and ±5% tolerance. The component features a maximum impedance of 1400 Ohms, reverse leakage current of 2 µA at 1 V, and maximum forward voltage of 1 V at 200 mA. Its operating temperature range is -65°C to 200°C. Housed in the SOD-80 package, the CLL4617 BK is currently classified as Obsolete. Due to obsolescence, alternative models with matching electrical and mechanical parameters are necessary for designs requiring ongoing manufacturing support or maintenance.

Key Parameters

Parameter	Value
Manufacturer	Central Semiconductor Corp
Category	Diodes, Zener
Voltage - Zener (Nom) (Vz)	2.4 V
Tolerance	±5%
Power - Max	500 mW
Impedance (Max) (Zzt)	1400 Ohms
Current - Reverse Leakage @ Vr	2 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1 V @ 200 mA
Operating Temperature (TJ)	-65°C ~ 200°C
Mounting Type	Surface Mount
Package / Case	DO-213AC, MINI-MELF, SOD-80
Supplier Device Package	SOD-80
Product Status	Obsolete
Inventory	688 Pcs New Original In Stock

Substitute Part Grouping Explanation

Substitute parts for Zener diodes must strictly match the following electrical and mechanical parameters: Zener voltage (2.4 V), tolerance (±5%), maximum power (500 mW), impedance (1400 Ohms), reverse leakage current (2 µA @ 1 V), and mounting type (Surface Mount). The package/case should provide equivalent mounting and board compatibility. Only parts matching these parameters are listed as substitute options for CLL4617 BK.

Parameter Comparison

Part Number	Manufacturer	Voltage - Zener (Nom) (Vz)	Tolerance	Power - Max	Impedance (Max) (Zzt)	Current - Reverse Leakage @ Vr	Voltage - Forward (Vf) (Max) @ If	Operating Temperature (TJ)	Mounting Type	Package / Case	Supplier Device Package	Product Status
CLL4617 BK	Central Semiconductor Corp	2.4 V	±5%	500 mW	1400 Ohms	2 µA @ 1 V	1 V @ 200 mA	-65°C ~ 200°C	Surface Mount	DO-213AC, MINI-MELF, SOD-80	SOD-80	Obsolete
CMHZ4617 BK	Central Semiconductor Corp	2.4 V	±5%	500 mW	1400 Ohms	2 µA @ 1 V	1.5 V @ 100 mA	-65°C ~ 150°C	Surface Mount	SOD-123	SOD-123	Active

Engineering Selection Recommendations

Selection between obsolete and active Zener diode models should be based on product status and packaging requirements. CMHZ4617 BK is listed as Active and meets REACH compliance criteria, making it suitable for ongoing designs and new production. The CLL4617 BK, being Obsolete, should only be used for legacy maintenance where original package compatibility is mandatory.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for substituting CLL4617 BK with CMHZ4617 BK?
A1: Substitution requires matching electrical parameters—Zener voltage (2.4 V), tolerance (±5%), power rating (500 mW), maximum impedance (1400 Ohms), reverse leakage (2 µA @ 1 V), and surface mount capability.

Q2: Is there a difference in mounting type or package?
A2: The CLL4617 BK uses a SOD-80 package, while the CMHZ4617 BK uses a SOD-123 package. Mechanical compatibility with the intended PCB layout should be verified.

Q3: Does the substitute part meet required compliance statuses?
A3: The CMHZ4617 BK is listed as REACH Unaffected and is Active. CLL4617 BK does not specify compliance and is Obsolete.

Q4: Should forward voltage or operating temperature differences impact selection?
A4: Only specified parameters should be used for substitution. Forward voltage and operating temperature differences are provided for reference and must match application requirements when relevant.

Q5: Why are additional part numbers (MMSZ5221B-TP, BZT52C2V4-E3-18, BZT52B2V4-E3-18, SZMMSZ4681T1G, DDZ9681Q-7) listed as substitutes?
A5: These part numbers are provided as alternatives meeting the explicit substitution parameters for this product category, based strictly on the supplied criteria.

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