CLL4690 BK Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4690 BK is a 5.6 V, 500 mW surface mount zener diode manufactured by Central Semiconductor Corp in SOD-80 (DO-213AC, MINI-MELF) package. This part is classified as obsolete, making equivalent and substitute components necessary for new designs and ongoing production requirements. The CLL4690 BK operates across a temperature range of -65°C to 200°C with ±5% voltage tolerance and 10 µA reverse leakage current at 4 V.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	5.6	V
Tolerance	±5%	-
Power - Max	500	mW
Current - Reverse Leakage @ Vr	10	µA @ 4 V
Voltage - Forward (Vf) (Max) @ If	1.5	V @ 100 mA
Operating Temperature	-65 to 200	°C
Mounting Type	Surface Mount	-
Package / Case	SOD-80, DO-213AC, MINI-MELF	-
Product Status	Obsolete	-

Substitute Part Grouping Explanation

Substitution of the CLL4690 BK is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 5.6 V nominal
Power dissipation: 500 mW maximum
Package type: SOD-80 (DO-213AC, MINI-MELF) surface mount
Voltage tolerance: ±5% or tighter
Operating temperature range: minimum -65°C to 175°C (acceptable for most applications requiring -65°C to 200°C operation)

Secondary Compatibility Factors:

Forward voltage (Vf) at specified current
Reverse leakage current characteristics
Impedance specifications
RoHS and REACH compliance status

All substitute parts listed maintain the core electrical specifications (5.6 V zener voltage, 500 mW power rating) and identical package form factor. Substitutes are grouped by manufacturer and tolerance grade, with active product status preferred over obsolete components.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Tolerance	Power (mW)	Package	Vf @ If (V)	Ir @ Vr (µA)	Temp Range (°C)	Status
CLL4690 BK	Central Semiconductor	5.6	±5%	500	SOD-80	1.5 @ 100 mA	10 @ 4 V	-65 to 200	Obsolete
CMHZ4690 BK	Central Semiconductor	5.6	±5%	500	SOD-123	1.5 @ 100 mA	10 @ 4 V	-65 to 150	Active
TLZ5V6-GS08	Vishay	5.6	-	500	SOD-80	1.5 @ 200 mA	-	-65 to 175	Active
TLZ5V6-GS18	Vishay	5.6	-	500	SOD-80	1.5 @ 200 mA	-	-65 to 175	Active
TZM5232B-GS08	Vishay	5.6	±5%	500	SOD-80	1.1 @ 200 mA	5 @ 3 V	-	Active
TZM5232B-GS18	Vishay	5.6	±5%	500	SOD-80	1.1 @ 200 mA	5 @ 3 V	-65 to 175	Active
TZMB5V6-GS08	Vishay	5.6	±2%	500	SOD-80	1.5 @ 200 mA	100 nA @ 1 V	-65 to 175	Active
TZMB5V6-GS18	Vishay	5.6	±2%	500	SOD-80	1.5 @ 200 mA	100 nA @ 1 V	-65 to 175	Active
TZMC5V6-GS08	Vishay	5.6	±5%	500	SOD-80	1.5 @ 200 mA	100 nA @ 1 V	-65 to 175	Active
TZMC5V6-GS18	Vishay	5.6	±5%	500	SOD-80	1.5 @ 200 mA	100 nA @ 1 V	-65 to 175	Active
TZMC5V6-M-08	Vishay	5.6	±5%	500	SOD-80	1.5 @ 200 mA	100 nA @ 1 V	-65 to 175	Active

Engineering Selection Recommendations

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

The Vishay TZMC5V6-GS08, TZMC5V6-GS18, and TZMC5V6-M-08 series provide direct electrical and mechanical compatibility with the CLL4690 BK. These parts maintain 5.6 V nominal zener voltage, 500 mW power rating, SOD-80 package form factor, and ±5% tolerance matching. All three are active products with ROHS3 compliance and AEC-Q101 automotive qualification. Operating temperature range extends to -65°C to 175°C, suitable for applications not requiring the full 200°C upper limit of the original part.

Secondary Substitutes (Tighter Tolerance):

The Vishay TZMB5V6-GS08 and TZMB5V6-GS18 offer ±2% voltage tolerance with improved reverse leakage characteristics (100 nA @ 1 V versus 10 µA @ 4 V). These components are AEC-Q101 qualified automotive-grade parts with identical SOD-80 packaging and -65°C to 175°C operating range. The tighter tolerance provides enhanced voltage regulation performance in precision applications.

Alternative Package Option:

The Central Semiconductor CMHZ4690 BK maintains manufacturer continuity with identical electrical specifications but uses SOD-123 package instead of SOD-80. This part is active and suitable only for applications where package footprint change is acceptable. Operating temperature range is -65°C to 150°C.

Compliance Status:

All recommended Vishay substitutes carry ROHS3 compliance and REACH Unaffected status. Moisture sensitivity level is 1 (Unlimited) for all active alternatives, indicating no special handling requirements during storage or assembly.

Frequently Asked Questions (FAQ)

Q: Can CMHZ4690 BK replace CLL4690 BK directly on the PCB?

A: No. While CMHZ4690 BK maintains identical electrical specifications (5.6 V, 500 mW, ±5%), it uses SOD-123 package instead of SOD-80. PCB footprint and land pattern are different. This part is suitable only for new designs where package change is acceptable.

Q: What is the difference between TLZ5V6-GS08 and TZMC5V6-GS08?

A: Both are 5.6 V, 500 mW SOD-80 zener diodes from Vishay. TLZ5V6-GS08 does not specify voltage tolerance or impedance. TZMC5V6-GS08 specifies ±5% tolerance, 40 Ohms maximum impedance, and AEC-Q101 automotive qualification. TZMC5V6-GS08 is the preferred choice for applications requiring defined tolerance and automotive-grade reliability.

Q: Are the Vishay TZMC5V6 variants (GS08, GS18, M-08) electrically interchangeable?

A: Yes. TZMC5V6-GS08, TZMC5V6-GS18, and TZMC5V6-M-08 are electrically identical with 5.6 V nominal voltage, ±5% tolerance, 500 mW power, and SOD-80 package. Differences are in packaging format (Tape & Reel versus Cut Tape) and reel size designation. Selection depends on procurement and assembly requirements, not electrical performance.

Q: Does the CLL4690 BK require replacement due to obsolescence?

A: Yes. The CLL4690 BK is classified as obsolete. While 931 pieces are currently in stock, long-term availability is not guaranteed. For new designs and production continuity, transition to active alternatives such as TZMC5V6-GS08 or TZMB5V6-GS08 is recommended.

Q: What is the operating temperature limitation when substituting with Vishay parts?

A: The CLL4690 BK operates to 200°C maximum junction temperature. Vishay substitutes (TLZ, TZM, TZMB series) operate to 175°C maximum. For applications requiring operation above 175°C, the original CLL4690 BK or equivalent 200°C-rated components must be used. For standard industrial and automotive applications (-65°C to 150°C), the 175°C upper limit of Vishay parts is sufficient.

Q: What does AEC-Q101 qualification mean for zener diode selection?

A: AEC-Q101 is the automotive electronics council qualification standard for discrete semiconductors. Parts carrying this qualification (TZMB5V6 and TZMC5V6 series) have undergone rigorous testing for reliability, temperature cycling, and performance consistency. These parts are suitable for automotive and high-reliability applications. Non-qualified parts (TLZ series) are suitable for general industrial applications.

Q: Can I use TZMB5V6-GS08 (±2% tolerance) in place of CLL4690 BK (±5% tolerance)?

A: Yes. TZMB5V6-GS08 provides tighter voltage tolerance (±2% versus ±5%), making it a superior substitute. The part maintains 5.6 V nominal voltage, 500 mW power rating, and SOD-80 package compatibility. The improved tolerance provides better voltage regulation and is fully backward compatible with designs specified for ±5% tolerance.

Q: What is the difference between reverse leakage specifications across substitute parts?

A: CLL4690 BK specifies 10 µA @ 4 V. TZM5232B series specifies 5 µA @ 3 V. TZMB and TZMC series specify 100 nA @ 1 V. Lower leakage current indicates better reverse bias performance and lower power consumption in standby conditions. Parts with lower leakage (100 nA) are preferred for low-power and precision applications.

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