CLL4693 TR Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4693 TR is a 7.5 V, 500 mW Zener diode manufactured by Central Semiconductor Corp in SOD-80 (MINI-MELF) surface mount package. This component is classified as obsolete, indicating discontinued production and limited availability. The part operates across a temperature range of -65°C to 200°C with ±5% voltage tolerance and exhibits reverse leakage current of 10 µA at 5.7 V. Identification of equivalent and substitute parts is necessary due to the obsolete product status and to ensure design continuity and procurement reliability.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	7.5	V
Power - Max	500	mW
Tolerance	±5%	-
Current - Reverse Leakage @ Vr	10	µA @ 5.7 V
Voltage - Forward (Vf) (Max) @ If	1.5	V @ 100 mA
Operating Temperature Range	-65 to 200	°C
Mounting Type	Surface Mount	-
Package / Case	SOD-80, DO-213AC, MINI-MELF	-

Substitute Part Grouping Explanation

Substitution of the CLL4693 TR is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 7.5 V nominal
Power dissipation: 500 mW maximum
Voltage tolerance: ±5%
Package type: SOD-80 (MINI-MELF, DO-213AC)
Mounting configuration: Surface mount

Secondary Compatibility Factors:

Reverse leakage current characteristics
Forward voltage drop specifications
Operating temperature range
Impedance (Zzt) maximum values

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

Category 1: SOD-80 Package (Direct Package Compatibility) Parts maintaining the SOD-80 MINI-MELF package format with identical zener voltage and power ratings. These include Vishay TLZ and TZM series components and the Central Semiconductor CMHZ4693 TR variant.

Category 2: Alternative Package (SOD-123) The CMHZ4693 TR represents a package variant in SOD-123 format with identical electrical specifications but different thermal and mechanical characteristics.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Power (mW)	Tolerance	Package	Temp Range (°C)	Product Status	Reverse Leakage @ Vr	Vf (Max) @ If
CLL4693 TR	Central Semiconductor	7.5	500	±5%	SOD-80	-65 to 200	Obsolete	10 µA @ 5.7 V	1.5 V @ 100 mA
CMHZ4693 TR	Central Semiconductor	7.5	500	±5%	SOD-123	-65 to 150	Active	10 µA @ 5.7 V	1.5 V @ 100 mA
TLZ7V5A-GS08	Vishay	7.5	500	-	SOD-80	-65 to 175	Active	3 µA @ 6.5 V	1.5 V @ 200 mA
TLZ7V5B-GS18	Vishay	7.5	500	-	SOD-80	-65 to 175	Active	3 µA @ 6.73 V	1.5 V @ 200 mA
TLZ7V5C-GS08	Vishay	7.5	500	-	SOD-80	-65 to 175	Active	3 µA @ 6.93 V	1.5 V @ 200 mA
TLZ7V5C-GS18	Vishay	7.5	500	-	SOD-80	-65 to 175	Active	3 µA @ 6.93 V	1.5 V @ 200 mA
TZM5236B-GS08	Vishay	7.5	500	±5%	SOD-80	-65 to 175	Active	3 µA @ 6 V	1.1 V @ 200 mA
TZM5236B-GS18	Vishay	7.5	500	±5%	SOD-80	-65 to 175	Active	3 µA @ 6 V	1.1 V @ 200 mA
TZMC7V5-M-08	Vishay	7.5	500	±5%	SOD-80	-65 to 175	Active	100 nA @ 5 V	1.5 V @ 200 mA

Engineering Selection Recommendations

For Direct Replacement (SOD-80 Package Compatibility):

The Vishay TLZ7V5C-GS08 and TLZ7V5C-GS18 are recommended as primary substitutes. Both parts maintain SOD-80 package compatibility, identical 7.5 V zener voltage, and 500 mW power rating. These components are in active production status with ROHS3 compliance and REACH unaffected designation. The operating temperature range extends to 175°C, which covers the majority of applications within the original part's -65°C to 200°C specification. Reverse leakage current is reduced to 3 µA, representing improved performance characteristics.

The Vishay TZM5236B-GS08 and TZM5236B-GS18 provide equivalent electrical performance with ±5% tolerance matching the original specification. These parts feature lower forward voltage drop (1.1 V @ 200 mA) and reduced impedance (6 Ohms), offering enhanced efficiency in voltage regulation applications.

The Vishay TZMC7V5-M-08 is suitable for automotive applications requiring AEC-Q101 qualification. This part exhibits significantly lower reverse leakage current (100 nA @ 5 V) and maintains full temperature range operation (-65°C to 175°C).

For Package Variant Substitution (SOD-123):

The Central Semiconductor CMHZ4693 TR provides an active production alternative in SOD-123 package format with identical electrical specifications. This option is applicable when PCB layout accommodates the smaller SOD-123 footprint. Operating temperature range is limited to -65°C to 150°C, which may restrict use in high-temperature applications.

Compliance Considerations:

All recommended Vishay substitutes carry ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with modern manufacturing standards. The TZMC7V5-M-08 includes automotive-grade qualification for applications requiring enhanced reliability documentation.

Frequently Asked Questions (FAQ)

Q: Can the CLL4693 TR be directly replaced with CMHZ4693 TR?

A: Electrical substitution is possible as both parts share identical zener voltage (7.5 V), power rating (500 mW), tolerance (±5%), and reverse leakage characteristics (10 µA @ 5.7 V). However, the package format differs: CLL4693 TR uses SOD-80 while CMHZ4693 TR uses SOD-123. PCB layout modification is required. Additionally, CMHZ4693 TR operating temperature range is limited to -65°C to 150°C compared to the original -65°C to 200°C specification.

Q: What is the primary difference between TLZ and TZM series substitutes?

A: Both series maintain 7.5 V zener voltage and 500 mW power rating in SOD-80 package. The TZM series includes ±5% tolerance specification matching the original CLL4693 TR, while TLZ series does not specify tolerance. TZM5236B variants feature lower forward voltage drop (1.1 V @ 200 mA) and reduced impedance (6 Ohms) compared to TLZ variants (1.5 V @ 200 mA, 8 Ohms impedance).

Q: Is the TZMC7V5-M-08 suitable for all applications?

A: The TZMC7V5-M-08 is qualified for automotive applications (AEC-Q101) and exhibits superior reverse leakage characteristics (100 nA @ 5 V). Operating temperature range is -65°C to 175°C. This part is appropriate for applications requiring automotive-grade reliability. For non-automotive applications, standard TLZ or TZM variants provide equivalent performance at potentially lower cost.

Q: What are the thermal implications of package selection?

A: SOD-80 (MINI-MELF) package provides superior thermal performance compared to SOD-123 due to larger lead surface area. For applications operating near maximum power dissipation (500 mW), SOD-80 package variants (TLZ7V5C-GS08, TZM5236B-GS08, TZMC7V5-M-08) are preferred. SOD-123 package (CMHZ4693 TR) is suitable for lower power applications or designs with thermal management provisions.

Q: Are all substitute parts RoHS compliant?

A: All Vishay substitute parts (TLZ and TZM series, TZMC7V5-M-08) carry ROHS3 compliance designation. The Central Semiconductor CMHZ4693 TR does not specify RoHS status in provided documentation. Verify RoHS compliance requirements with component supplier for CMHZ4693 TR if regulatory compliance is mandatory.

Q: What is the significance of reverse leakage current differences?

A: The original CLL4693 TR specifies 10 µA reverse leakage at 5.7 V. Vishay substitutes reduce this to 3 µA, with TZMC7V5-M-08 achieving 100 nA at 5 V. Lower reverse leakage improves circuit performance in precision voltage regulation and high-impedance applications. For standard voltage regulation circuits, the difference is not functionally significant.

Q: Can substitutes be used in high-temperature applications?

A: The original CLL4693 TR operates to 200°C. Vishay substitutes are rated to 175°C maximum, representing a 25°C reduction. For applications requiring operation above 175°C, the original CLL4693 TR specification cannot be matched by available substitutes. Verify actual operating temperature requirements before selecting alternatives.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message