CLL4683 BK Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4683 BK is a 3 V, 500 mW Zener diode manufactured by Central Semiconductor Corp in SOD-80 (DO-213AC, MINI-MELF) surface mount package. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design requirements and production continuity. The part operates across a temperature range of -65°C to 200°C with ±5% voltage tolerance and 800 nA reverse leakage current at 1 V.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	3	V
Power - Max	500	mW
Tolerance	±5%	-
Current - Reverse Leakage @ Vr	800	nA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.5	V @ 100 mA
Operating Temperature Range	-65 to 200	°C
Mounting Type	Surface Mount	-
Package / Case	DO-213AC, MINI-MELF, SOD-80	-
Product Status	Obsolete	-

Substitute Part Grouping Explanation

Substitution of the CLL4683 BK is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 3 V nominal
Maximum power dissipation: 500 mW
Mounting type: Surface Mount
Package compatibility: SOD-80 (DO-213AC, MINI-MELF)

Secondary Compatibility Factors:

Voltage tolerance (±5% preferred for direct replacement)
Operating temperature range (minimum -65°C to 175°C acceptable; original extends to 200°C)
Reverse leakage current characteristics
Forward voltage characteristics

Substitute parts are grouped into two categories:

Category 1: Same Package, Same Voltage Rating (SOD-80 MiniMELF) Parts maintaining identical package and electrical specifications enable direct board-level substitution without layout modifications. This includes Vishay TLZ and TZM series components.

Category 2: Alternative Package, Same Electrical Specifications (SOD-123) The CMHZ4683 BK provides equivalent electrical performance in SOD-123 package, requiring PCB layout adjustment but maintaining functional compatibility.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Power (mW)	Tolerance	Package	Vf Max @ If	Temp Range (°C)	Status	RoHS
CLL4683 BK	Central Semiconductor	3	500	±5%	SOD-80	1.5 V @ 100 mA	-65 to 200	Obsolete	-
CMHZ4683 BK	Central Semiconductor	3	500	±5%	SOD-123	1.5 V @ 100 mA	-65 to 150	Active	-
TLZ3V0-GS08	Vishay	3	500	-	SOD-80	1.5 V @ 200 mA	-65 to 175	Active	ROHS3
TLZ3V0-GS18	Vishay	3	500	-	SOD-80	1.5 V @ 200 mA	-65 to 175	Active	ROHS3
TLZ3V0A-GS08	Vishay	3	500	-	SOD-80	1.5 V @ 200 mA	-65 to 175	Active	ROHS3
TLZ3V0A-GS18	Vishay	3	500	-	SOD-80	1.5 V @ 200 mA	-65 to 175	Active	ROHS3
TLZ3V0B-GS08	Vishay	3	500	-	SOD-80	1.5 V @ 200 mA	-65 to 175	Active	ROHS3
TLZ3V0B-GS18	Vishay	3	500	-	SOD-80	1.5 V @ 200 mA	-65 to 175	Active	ROHS3
TZMC3V0-GS08	Vishay	3	500	±5%	SOD-80	1.5 V @ 200 mA	-65 to 175	Active	ROHS3
TZMC3V0-GS18	Vishay	3	500	±5%	SOD-80	1.5 V @ 200 mA	-65 to 175	Active	ROHS3
TZMC3V0-M-08	Vishay	3	500	±5%	SOD-80	1.5 V @ 200 mA	-65 to 175	Active	ROHS3

Engineering Selection Recommendations

Direct Substitutes (SOD-80 Package, No Layout Changes Required):

The Vishay TZMC3V0 series (TZMC3V0-GS08, TZMC3V0-GS18, TZMC3V0-M-08) provides the closest functional equivalence to CLL4683 BK. These parts maintain identical zener voltage (3 V), power rating (500 mW), ±5% tolerance, and SOD-80 package. All TZMC variants are active products with ROHS3 compliance and AEC-Q101 automotive qualification. The TZMC3V0-GS08 offers the highest inventory availability (8,300 pcs) among direct substitutes.

Alternative Substitutes (SOD-80 Package, Tolerance Differences):

The Vishay TLZ3V0 series (TLZ3V0-GS08, TLZ3V0-GS18, TLZ3V0A-GS08, TLZ3V0A-GS18, TLZ3V0B-GS08, TLZ3V0B-GS18) maintains SOD-80 package compatibility and 3 V zener voltage with 500 mW power rating. These parts lack specified tolerance values but are active products with ROHS3 compliance. Reverse leakage current varies across the TLZ series: standard TLZ3V0 (800 nA @ 1 V), TLZ3V0A (50 µA @ 1 V), and TLZ3V0B (10 µA @ 1 V).

Package Alternative (Different Layout Required):

The CMHZ4683 BK from Central Semiconductor provides equivalent electrical specifications (3 V, 500 mW, ±5% tolerance) in SOD-123 package. This part is active and maintains the same manufacturer as the original component. Operating temperature range is reduced to -65°C to 150°C compared to the original -65°C to 200°C specification.

Temperature Consideration:

Applications requiring operation above 175°C must retain the original CLL4683 BK or identify alternative solutions, as all active substitutes operate to maximum 175°C.

Frequently Asked Questions (FAQ)

Q: Can TLZ3V0 series parts directly replace CLL4683 BK without circuit modifications?

A: Yes, TLZ3V0 series parts in SOD-80 package (TLZ3V0-GS08, TLZ3V0-GS18, TLZ3V0A-GS08, TLZ3V0A-GS18, TLZ3V0B-GS08, TLZ3V0B-GS18) are pin-compatible and footprint-compatible with CLL4683 BK. No PCB layout changes are required. Electrical specifications for zener voltage (3 V) and power rating (500 mW) are identical.

Q: What is the difference between TZMC3V0-GS08 and TLZ3V0-GS08?

A: Both parts share identical zener voltage (3 V), power rating (500 mW), and SOD-80 package. The TZMC3V0 series includes ±5% voltage tolerance specification and AEC-Q101 automotive qualification, while TLZ3V0 series does not specify tolerance. TZMC3V0 impedance is 90 Ohms maximum; TLZ3V0 impedance is 80 Ohms maximum. TZMC3V0 reverse leakage is 4 µA @ 1 V; TLZ3V0 reverse leakage is 800 nA @ 1 V.

Q: Is CMHZ4683 BK a suitable replacement if PCB redesign is acceptable?

A: CMHZ4683 BK provides equivalent electrical performance (3 V, 500 mW, ±5% tolerance) and is an active product from the same manufacturer. However, it uses SOD-123 package instead of SOD-80, requiring PCB footprint modification. Operating temperature range is limited to -65°C to 150°C versus the original -65°C to 200°C.

Q: Which substitute part has the highest inventory availability?

A: TZMC3V0-GS08 has the highest inventory with 8,300 pcs in stock, followed by TLZ3V0A-GS08 with 6,530 pcs.

Q: Are all substitute parts RoHS compliant?

A: All Vishay substitute parts (TLZ and TZMC series) are ROHS3 compliant. CMHZ4683 BK does not specify RoHS status in the provided data.

Q: What is the temperature limitation when selecting substitutes?

A: All active substitute parts operate to maximum 175°C. The original CLL4683 BK operates to 200°C. Applications requiring operation above 175°C cannot use the listed substitutes.

Q: Do TLZ3V0A and TLZ3V0B variants differ in performance?

A: TLZ3V0A and TLZ3V0B variants differ in reverse leakage current specifications. TLZ3V0A specifies 50 µA @ 1 V, while TLZ3V0B specifies 10 µA @ 1 V. Both maintain identical zener voltage (3 V), power rating (500 mW), and SOD-80 package. The -GS08 and -GS18 suffixes indicate different tape reel configurations.

Q: Can TZMC3V0-M-08 be used interchangeably with TZMC3V0-GS08?

A: Yes, TZMC3V0-M-08 and TZMC3V0-GS08 share identical electrical specifications (3 V zener voltage, 500 mW power, ±5% tolerance, SOD-80 package, AEC-Q101 qualification). Both are active products with ROHS3 compliance. The -M- designation indicates a different series variant (TZM-M) but maintains full compatibility.

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