CLL5229B TR Equivalent & Substitute Parts

Part Overview

The CLL5229B TR is a Zener diode rated at 4.3 V nominal with 500 mW power dissipation, manufactured by Central Semiconductor Corp in SOD-80 surface mount package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing design support and procurement. Substitute parts must maintain electrical equivalence across voltage regulation, power handling, and thermal operating range specifications while accommodating modern supply chain availability.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	4.3	V
Tolerance	±5%	-
Power - Max	500	mW
Impedance (Max)	22	Ohms
Current - Reverse Leakage @ Vr	5	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.25	V @ 200 mA
Operating Temperature	-65 to 200	°C
Mounting Type	Surface Mount	-
Package / Case	DO-213AC, MINI-MELF, SOD-80	-
Moisture Sensitivity Level	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following electrical and mechanical parameters:

Primary Equivalence Criteria:

Voltage - Zener (Nom): 4.3 V
Power - Max: 500 mW
Package / Case: DO-213AC, MINI-MELF, SOD-80
Mounting Type: Surface Mount
Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Parameters:

Operating Temperature range must encompass or match the original specification
Impedance (Max) and reverse leakage characteristics must be within acceptable circuit tolerance
Forward voltage characteristics must support intended application requirements

Substitute parts are grouped into two categories based on tolerance specification:

Category A: Tolerance-Matched Substitutes (±5%) Parts maintaining the original ±5% tolerance specification: TZM5229B-GS08, TZM5229B-GS18

Category B: Tolerance-Unspecified Substitutes Parts with unspecified tolerance but matching all other electrical parameters: TLZ4V3-GS08, TLZ4V3-GS18, TLZ4V3A-GS08, TLZ4V3A-GS18, TLZ4V3B-GS08, TLZ4V3B-GS18, TLZ4V3C-GS08, TLZ4V3C-GS18

All substitute parts are manufactured by Vishay General Semiconductor - Diodes Division and carry active product status with ROHS3 compliance and REACH unaffected designation.

Parameter Comparison

Parameter	CLL5229B TR	TLZ4V3-GS08	TLZ4V3-GS18	TLZ4V3A-GS08	TLZ4V3A-GS18	TLZ4V3B-GS08	TLZ4V3B-GS18	TLZ4V3C-GS08	TLZ4V3C-GS18	TZM5229B-GS08	TZM5229B-GS18
Voltage - Zener (Nom)	4.3 V	4.3 V	4.3 V	4.3 V	4.3 V	4.3 V	4.3 V	4.3 V	4.3 V	4.3 V	4.3 V
Tolerance	±5%	-	-	-	-	-	-	-	-	±5%	±5%
Power - Max	500 mW	500 mW	500 mW	500 mW	500 mW	500 mW	500 mW	500 mW	500 mW	500 mW	500 mW
Impedance (Max)	22 Ohms	40 Ohms	40 Ohms	40 Ohms	40 Ohms	40 Ohms	40 Ohms	40 Ohms	40 Ohms	22 Ohms	22 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 1 V	-	-	3 µA @ 1 V	3 µA @ 1 V	3 µA @ 1 V	3 µA @ 1 V	3 µA @ 1 V	3 µA @ 1 V	5 µA @ 1 V	5 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.25 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA	1.5 V @ 200 mA	1.1 V @ 200 mA	1.1 V @ 200 mA
Operating Temperature	-65 to 200°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C	-65 to 175°C
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	-	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Tolerance-Critical Applications: Select TZM5229B-GS08 or TZM5229B-GS18. These parts maintain the original ±5% tolerance specification and match the impedance characteristic (22 Ohms maximum) of the CLL5229B TR. Both variants are active products with ROHS3 compliance. The GS08 variant offers significantly higher inventory availability (80,300 pcs) compared to GS18 (818 pcs).

For General-Purpose Substitution: The TLZ4V3 series (all variants: base, A, B, C grades with GS08 and GS18 packaging options) provides functional equivalence with identical 4.3 V nominal voltage and 500 mW power rating. These parts feature improved reverse leakage characteristics (3 µA maximum for A, B, C grades) and are all active products with ROHS3 compliance. Higher impedance (40 Ohms maximum) may affect circuit performance in applications requiring precise impedance matching.

Packaging Consideration: GS08 and GS18 designations indicate different tape reel configurations. Selection between these variants depends on assembly equipment compatibility and procurement volume requirements. Both maintain identical electrical specifications.

Temperature Range Limitation: All substitute parts operate to 175°C maximum junction temperature, compared to the original 200°C specification. Applications requiring operation above 175°C require design review.

Compliance Status: All substitute parts carry ROHS3 compliance and REACH unaffected designation, supporting modern regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can TLZ4V3 series parts directly replace CLL5229B TR without circuit modification?

A: TLZ4V3 series parts are electrically equivalent in voltage regulation function. However, impedance differs (40 Ohms vs. 22 Ohms maximum). Applications sensitive to dynamic impedance characteristics may require circuit evaluation. All other parameters align with substitution criteria.

Q: What is the difference between TZM5229B and TLZ4V3 series substitutes?

A: TZM5229B-GS08 and TZM5229B-GS18 maintain the original ±5% tolerance and 22 Ohms impedance specification. TLZ4V3 series parts have unspecified tolerance and 40 Ohms impedance. For tolerance-critical applications, TZM5229B variants are preferred. For general-purpose regulation, TLZ4V3 variants are acceptable.

Q: Why do substitute parts specify 175°C maximum operating temperature instead of 200°C?

A: This reflects the manufacturer's rated junction temperature specification for the substitute devices. Applications requiring 200°C operation must retain the original CLL5229B TR or identify alternative parts with matching thermal specifications.

Q: What does the GS08 versus GS18 designation indicate?

A: GS08 and GS18 refer to tape reel packaging configurations for automated assembly. Electrical specifications are identical between these variants. Selection depends on assembly equipment compatibility and procurement requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance and REACH unaffected designation, meeting current regulatory requirements for electronic component procurement.

Q: Which substitute part offers the best inventory availability?

A: TLZ4V3B-GS08 provides the highest inventory level at 205,400 pcs. For tolerance-matched substitution, TZM5229B-GS08 offers 80,300 pcs availability.

Q: Can reverse leakage differences affect circuit performance?

A: The original CLL5229B TR specifies 5 µA reverse leakage. TLZ4V3A, B, and C grades specify 3 µA, representing improved leakage characteristics. This difference is generally beneficial for circuit performance. TLZ4V3 base and GS variants do not specify reverse leakage.

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