CLL4689 BK Zener Diode Equivalent & Substitute Parts

Part Overview

The CLL4689 BK is a 5.1 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 new designs and ongoing production requirements. The part operates across a temperature range of -65°C to 200°C with ±5% voltage tolerance and specified reverse leakage characteristics suitable for voltage regulation and protection applications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	5.1	V
Power - Maximum	500	mW
Tolerance	±5%	-
Current - Reverse Leakage @ Vr	10	µA @ 3 V
Voltage - Forward (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 CLL4689 BK is determined by the following critical parameters:

Primary Substitution Criteria:

Zener voltage: 5.1 V nominal
Maximum power dissipation: 500 mW
Voltage tolerance: ±5%
Package type: SOD-80 (DO-213AC, MINI-MELF) surface mount
Reverse leakage current: 10 µA @ 3 V or lower

Secondary Compatibility Factors:

Forward voltage drop at specified current
Operating temperature range capability
Product status (active vs. obsolete)
Compliance certifications (RoHS, REACH)

Substitute parts are grouped into two categories:

Category 1: Same Manufacturer, Different Package CMHZ4689 BK operates at identical electrical specifications but uses SOD-123 package, requiring PCB layout modification.

Category 2: Alternative Manufacturers, Same Package Vishay General Semiconductor parts (TLZ5V1 series, TZM5231B series, TZMC5V1 series) maintain SOD-80 package compatibility with equivalent or superior electrical performance and active product status.

Parameter Comparison

Part Number	Manufacturer	Vz (V)	Power (mW)	Tolerance	Package	Reverse Leakage @ Vr	Vf (Max) @ If	Operating Temp (°C)	Product Status
CLL4689 BK	Central Semiconductor	5.1	500	±5%	SOD-80	10 µA @ 3 V	1.5 V @ 100 mA	-65 to 200	Obsolete
CMHZ4689 BK	Central Semiconductor	5.1	500	±5%	SOD-123	10 µA @ 3 V	1.5 V @ 100 mA	-65 to 150	Active
TLZ5V1B-GS18	Vishay	5.1	500	-	SOD-80	2 µA @ 2 V	1.5 V @ 200 mA	-65 to 175	Active
TLZ5V1C-GS08	Vishay	5.1	500	-	SOD-80	2 µA @ 2 V	1.5 V @ 200 mA	-65 to 175	Active
TLZ5V1C-GS18	Vishay	5.1	500	-	SOD-80	2 µA @ 2 V	1.5 V @ 200 mA	-65 to 175	Active
TZM5231B-GS08	Vishay	5.1	500	±5%	SOD-80	5 µA @ 2 V	1.1 V @ 200 mA	-65 to 175	Active
TZM5231B-GS18	Vishay	5.1	500	±5%	SOD-80	5 µA @ 2 V	1.1 V @ 200 mA	-65 to 175	Active
TZMC5V1-M-08	Vishay	5.1	500	±5%	SOD-80	100 nA @ 1 V	1.5 V @ 200 mA	-65 to 175	Active
TZMC5V1-M-18	Vishay	5.1	500	±5%	SOD-80	100 nA @ 1 V	1.5 V @ 200 mA	-65 to 175	Active

Engineering Selection Recommendations

For Direct Replacement (Same Package, Same Manufacturer): CMHZ4689 BK is the direct Central Semiconductor equivalent with active product status. This part maintains identical electrical specifications and SOD-80 package footprint compatibility. The operating temperature range is reduced to -65°C to 150°C compared to the original -65°C to 200°C specification.

For SOD-80 Package Compatibility with Active Status: Vishay General Semiconductor parts provide multiple options with active product status and SOD-80 package compatibility:

TZM5231B-GS08 and TZM5231B-GS18 maintain ±5% tolerance matching the original specification with improved reverse leakage characteristics (5 µA @ 2 V) and lower forward voltage (1.1 V @ 200 mA). These parts are RoHS3 compliant and REACH unaffected.
TZMC5V1-M-08 and TZMC5V1-M-18 are automotive-grade parts with AEC-Q101 qualification, featuring significantly lower reverse leakage (100 nA @ 1 V) and ±5% tolerance. These are suitable for applications requiring automotive-level reliability.
TLZ5V1B-GS18, TLZ5V1C-GS08, and TLZ5V1C-GS18 provide SOD-80 package compatibility with improved reverse leakage (2 µA @ 2 V) and forward voltage characteristics. These parts do not specify tolerance but maintain 5.1 V nominal zener voltage and 500 mW power rating.

All Vishay alternatives are RoHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating.

For Package Change Scenarios: CMHZ4689 BK in SOD-123 package is available as an active alternative when PCB layout permits package substitution.

Frequently Asked Questions (FAQ)

Q: Can CMHZ4689 BK replace CLL4689 BK directly? A: CMHZ4689 BK is electrically equivalent with identical 5.1 V, 500 mW specifications and ±5% tolerance. However, it uses SOD-123 package instead of SOD-80, requiring PCB footprint modification. The operating temperature range is reduced to -65°C to 150°C.

Q: What is the difference between TLZ5V1 and TZM5231B series? A: Both series operate at 5.1 V, 500 mW in SOD-80 package. TZM5231B specifies ±5% tolerance and lower forward voltage (1.1 V @ 200 mA). TLZ5V1 series does not specify tolerance but features lower reverse leakage (2 µA @ 2 V). Selection depends on tolerance and leakage requirements.

Q: Are Vishay parts suitable for automotive applications? A: TZMC5V1-M-08 and TZMC5V1-M-18 are specifically qualified for automotive use with AEC-Q101 certification. Other Vishay alternatives are industrial-grade components suitable for general applications.

Q: What is the significance of the "-GS08" and "-GS18" suffixes? A: These suffixes indicate tape and reel packaging configurations. "-GS08" and "-GS18" denote different reel specifications for automated assembly. Both are functionally equivalent; selection depends on assembly equipment compatibility.

Q: Do all substitute parts maintain SOD-80 package compatibility? A: All Vishay alternatives (TLZ5V1, TZM5231B, TZMC5V1 series) maintain SOD-80 package compatibility with the original CLL4689 BK. CMHZ4689 BK uses SOD-123 package and requires PCB layout modification.

Q: What are the compliance differences between substitute parts? A: All listed Vishay alternatives are RoHS3 compliant and REACH unaffected. TZMC5V1-M series additionally carries AEC-Q101 automotive qualification. All parts have MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute offers the lowest reverse leakage current? A: TZMC5V1-M-08 and TZMC5V1-M-18 feature the lowest reverse leakage at 100 nA @ 1 V, compared to 10 µA @ 3 V for the original CLL4689 BK.

Q: Can I use TLZ5V1 series without tolerance specification? A: TLZ5V1 series maintains 5.1 V nominal zener voltage and 500 mW power rating. The absence of specified tolerance does not indicate inferior performance; it reflects different characterization methodology. Compatibility depends on circuit tolerance requirements.

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