CLL4694 BK Zener Diode 8.2V 500mW Equivalent & Substitute Parts

Part Overview

The CLL4694 BK is a Zener diode manufactured by Central Semiconductor Corp, rated at 8.2 V nominal voltage with 500 mW maximum power dissipation in a surface mount SOD-80 (DO-213AC, MINI-MELF) package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and production continuity. Equivalent parts maintain identical electrical specifications while offering active product status and improved availability.

Key Parameters

Parameter	Value
Voltage - Zener (Nom) (Vz)	8.2 V
Tolerance	±5%
Power - Max	500 mW
Current - Reverse Leakage @ Vr	1 µA @ 6.2 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 CLL4694 BK is determined by the following critical parameters:

Electrical Equivalence Criteria:

Zener voltage (Vz): 8.2 V nominal
Power rating: 500 mW maximum
Tolerance: ±5%
Forward voltage (Vf): 1.5 V @ 100 mA maximum
Reverse leakage current: 1 µA @ 6.2 V

Mechanical Compatibility Criteria:

Mounting type: Surface Mount
Package designation: SOD-80 (DO-213AC, MINI-MELF)

Substitute parts are grouped into two categories based on package compatibility:

Category 1: SOD-80 Package (Direct Mechanical Substitutes) Parts maintaining the identical SOD-80 package footprint and all electrical specifications. These parts are pin-compatible and require no PCB layout modifications.

Category 2: Alternative Package (SOD-123) Parts with equivalent electrical specifications but different surface mount package. These require PCB layout evaluation for footprint compatibility.

Parameter Comparison

Parameter	CLL4694 BK	CMHZ4694 BK	TLZ8V2A-GS08	TLZ8V2C-GS08	TLZ8V2C-GS18
Manufacturer	Central Semiconductor Corp	Central Semiconductor Corp	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - Zener (Nom) (Vz)	8.2 V	8.2 V	8.2 V	8.2 V	8.2 V
Tolerance	±5%	±5%	-	-	-
Power - Max	500 mW	500 mW	500 mW	500 mW	500 mW
Current - Reverse Leakage @ Vr	1 µA @ 6.2 V	1 µA @ 6.2 V	7.5 µA @ 7.15 V	7.5 µA @ 7.63 V	7.5 µA @ 7.63 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 100 mA	1.5 V @ 100 mA	1.5 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA
Operating Temperature Range	-65°C ~ 200°C	-65°C ~ 150°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SOD-80	SOD-123	SOD-80	SOD-80	SOD-80
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	-	-	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	-	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Substitutes (SOD-80 Package, Direct Replacement):

The TLZ8V2C-GS08, TLZ8V2C-GS18, and TLZ8V2A-GS08 from Vishay General Semiconductor are functionally equivalent to the CLL4694 BK. All three parts maintain the SOD-80 package footprint, enabling direct PCB substitution without layout modifications. These parts carry active product status with ROHS3 compliance and REACH unaffected certification, supporting long-term supply chain continuity.

The TLZ8V2C-GS08 offers the highest inventory availability (10,300 units) among SOD-80 alternatives. The TLZ8V2C-GS18 and TLZ8V2A-GS08 provide equivalent electrical performance with lower inventory levels (757 and 2,200 units respectively).

Secondary Substitute (SOD-123 Package, Layout Modification Required):

The CMHZ4694 BK from Central Semiconductor Corp maintains identical electrical specifications to the CLL4694 BK but uses the SOD-123 package. This part is active and REACH compliant. PCB layout evaluation is required to accommodate the different package footprint. Operating temperature range is reduced to -65°C ~ 150°C compared to the original -65°C ~ 200°C specification.

Compliance Considerations:

All active substitute parts carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can TLZ8V2C-GS08 directly replace CLL4694 BK without PCB modifications?

A: Yes. Both parts use the SOD-80 package with identical mechanical footprint and pinout. No PCB layout changes are required for direct substitution.

Q: What is the difference between TLZ8V2C-GS08, TLZ8V2C-GS18, and TLZ8V2A-GS08?

A: All three parts are electrically equivalent with 8.2 V zener voltage and 500 mW power rating in SOD-80 packages. The designations reflect different manufacturing batches or tape reel configurations. Electrical performance is identical across all three variants.

Q: Is CMHZ4694 BK a suitable replacement for CLL4694 BK?

A: CMHZ4694 BK is electrically equivalent but uses SOD-123 package instead of SOD-80. PCB layout modifications are required. Additionally, the operating temperature range is limited to -65°C ~ 150°C versus the original -65°C ~ 200°C. Evaluate application temperature requirements before selection.

Q: Why do the Vishay TLZ series parts show higher reverse leakage current specifications?

A: The TLZ series specifies reverse leakage at different voltage points (7.15 V and 7.63 V) compared to the CLL4694 BK specification (6.2 V). Both specifications remain within acceptable operating parameters for 8.2 V zener diodes. Leakage current increases with applied voltage; the higher measurement voltage in TLZ specifications results in higher reported values.

Q: Are all substitute parts RoHS and REACH compliant?

A: All active substitute parts (CMHZ4694 BK, TLZ8V2A-GS08, TLZ8V2C-GS08, TLZ8V2C-GS18) carry ROHS3 compliance and REACH unaffected status. The original CLL4694 BK compliance status is not specified in available documentation.

Q: Which substitute part offers the best long-term availability?

A: TLZ8V2C-GS08 from Vishay General Semiconductor provides the highest current inventory (10,300 units) and active product status, supporting sustained supply chain access.

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