CLL5225B TR Zener Diode 3V 500mW SOD-80 Equivalent & Substitute Parts

Part Overview

The CLL5225B TR is a surface mount Zener diode rated at 3 V nominal with 500 mW power dissipation, manufactured by Central Semiconductor Corp in SOD-80 (DO-213AC, MINI-MELF) package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part operates across a temperature range of -65°C to 200°C with ±5% voltage tolerance and 29 Ohms maximum impedance.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	3	V
Power - Max	500	mW
Tolerance	±5%	-
Impedance (Max)	29	Ohms
Current - Reverse Leakage @ Vr	50	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.25	V @ 200 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 CLL5225B TR is determined by the following critical electrical and mechanical parameters:

Primary Matching Criteria:

Zener voltage: 3 V nominal
Power rating: 500 mW maximum
Package type: SOD-80 (DO-213AC, MINI-MELF) surface mount
Reverse leakage current: 50 µA @ 1 V
Mounting compatibility: Surface mount

Substitution Logic: The three Vishay TLZ series parts (TLZ3V0A-GS08, TLZ3V0A-GS18, TLZ3V0B-GS18) meet all primary matching criteria. All substitute parts share identical nominal Zener voltage (3 V), power rating (500 mW), package configuration (SOD-80), and reverse leakage specification (50 µA @ 1 V for TLZ3V0A variants; 10 µA @ 1 V for TLZ3V0B variant). The substitute parts are classified as active products with RoHS3 compliance, providing long-term availability and regulatory alignment.

Secondary Parameter Variations: Impedance values differ between the main part (29 Ohms) and substitutes (80 Ohms). Forward voltage specifications also vary (1.25 V for CLL5225B TR versus 1.5 V for TLZ series). Operating temperature maximum differs (200°C for CLL5225B TR versus 175°C for TLZ series). These variations remain within acceptable substitution parameters for the specified application category.

Parameter Comparison

Parameter	CLL5225B TR	TLZ3V0A-GS08	TLZ3V0A-GS18	TLZ3V0B-GS18
Manufacturer	Central Semiconductor Corp	Vishay General Semiconductor	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - Zener (Nom)	3 V	3 V	3 V	3 V
Power - Max	500 mW	500 mW	500 mW	500 mW
Impedance (Max)	29 Ohms	80 Ohms	80 Ohms	80 Ohms
Current - Reverse Leakage @ Vr	50 µA @ 1 V	50 µA @ 1 V	50 µA @ 1 V	10 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
Operating Temperature Range	-65 to 200°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
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active
RoHS Status	-	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	-	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Product Status Consideration: The CLL5225B TR is classified as obsolete. All three substitute parts (TLZ3V0A-GS08, TLZ3V0A-GS18, TLZ3V0B-GS18) are active products manufactured by Vishay General Semiconductor, ensuring continued availability and manufacturing support.

Regulatory Compliance: All substitute parts carry RoHS3 compliance certification, meeting current environmental and regulatory requirements. The main part does not specify RoHS status. All parts are REACH Unaffected and classified under ECCN EAR99.

Electrical Compatibility: All substitute parts maintain the critical 3 V nominal Zener voltage and 500 mW power rating. The reverse leakage current specification is met or exceeded by all substitutes. Impedance and forward voltage variations are secondary parameters that do not prevent functional substitution within the SOD-80 package category.

Temperature Operating Range: The CLL5225B TR operates to 200°C maximum; substitute parts operate to 175°C maximum. Applications requiring operation above 175°C require design review against actual circuit requirements.

Packaging and Procurement: All substitute parts are supplied in Tape & Reel (TR) packaging, supporting automated assembly processes. Inventory availability is confirmed for all three substitute options.

Frequently Asked Questions (FAQ)

Q: Can TLZ3V0A-GS08, TLZ3V0A-GS18, and TLZ3V0B-GS18 be used interchangeably with CLL5225B TR?

A: Yes, within the constraints of the specified electrical parameters. All three parts share identical nominal Zener voltage (3 V), power rating (500 mW), and package configuration (SOD-80 surface mount). Differences in impedance (80 Ohms versus 29 Ohms) and forward voltage (1.5 V versus 1.25 V) are secondary variations. The TLZ3V0B-GS18 offers lower reverse leakage current (10 µA versus 50 µA), which may provide performance advantages in low-leakage applications.

Q: What is the difference between TLZ3V0A-GS08 and TLZ3V0A-GS18?

A: Both parts are electrically identical. The designation suffix indicates packaging reel size (08 and 18 refer to reel diameter specifications). Selection between these variants depends on procurement and assembly equipment compatibility. Electrical performance and package type (SOD-80) are identical.

Q: Why does the CLL5225B TR have lower impedance (29 Ohms) than the TLZ substitutes (80 Ohms)?

A: Impedance is a secondary parameter determined by internal device construction. The lower impedance of the CLL5225B TR does not prevent substitution with the TLZ series, as both meet the primary functional requirements of 3 V Zener voltage and 500 mW power rating in SOD-80 package.

Q: Are there temperature limitations when substituting with TLZ series parts?

A: The CLL5225B TR operates to 200°C maximum; TLZ series parts operate to 175°C maximum. Applications requiring operation above 175°C must be evaluated against actual circuit thermal requirements. For applications operating within -65°C to 175°C, the TLZ series parts are fully compatible.

Q: What is the significance of the TLZ3V0B-GS18 lower reverse leakage current?

A: The TLZ3V0B-GS18 specifies 10 µA reverse leakage at 1 V, compared to 50 µA for the TLZ3V0A variants and the original CLL5225B TR. Lower reverse leakage reduces standby current consumption and heat generation in applications sensitive to leakage current. This variant is suitable for low-power or precision circuit applications.

Q: Is RoHS3 compliance required for my application?

A: All substitute parts carry RoHS3 compliance certification. If your application or supply chain requires RoHS compliance, the TLZ series parts satisfy this requirement. The original CLL5225B TR does not specify RoHS status.

Q: Can I mix different substitute part numbers in the same production run?

A: All three substitute parts are electrically compatible and use identical SOD-80 packaging. Mixing part numbers is permissible from a functional standpoint. However, procurement and quality control procedures should address part number tracking and documentation requirements specific to your manufacturing process.

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