TLZ22B-GS18 Equivalent & Substitute Zener Diode Reference

Part Overview

The TLZ22B-GS18, manufactured by Vishay General Semiconductor - Diodes Division, is a 22V, 500 mW surface-mount Zener diode in a SOD-80 MiniMELF package. This device is commonly used for voltage regulation and protection in electronic circuits. The device is currently active, but the need to find alternative models may arise due to sourcing flexibility, inventory management, or multiple sourcing policies.

Key Parameters

Parameter	TLZ22B-GS18
Voltage - Zener (Nom) (Vz)	22 V
Power - Max	500 mW
Impedance (Max) (Zzt)	30 Ohms
Current - Reverse Leakage @ Vr	40 nA @ 19.6 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA
Operating Temperature	-65°C ~ 175°C
Mounting Type	Surface Mount
Package / Case	DO-213AC, MINI-MELF, SOD-80
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute selection for the Zener diode category is based strictly on the following parameters: Zener voltage, maximum power dissipation, Zener impedance (Zzt) at the specified current, maximum reverse leakage at rated voltage, forward voltage at rated forward current, package type, mounting style, RoHS compliance, moisture sensitivity level, and product status. Substitution is limited to components that match these key electrical and mechanical parameters.

Parameter Comparison

Parameter	TLZ22B-GS18	CLL5251B TR PBFREE
Manufacturer	Vishay General Semiconductor - Diodes Division	Central Semiconductor Corp
Voltage - Zener (Nom) (Vz)	22 V	22 V
Power - Max	500 mW	500 mW
Impedance (Max) (Zzt)	30 Ohms	29 Ohms
Current - Reverse Leakage @ Vr	40 nA @ 19.6 V	100 nA @ 17 V
Voltage - Forward (Vf) (Max) @ If	1.5 V @ 200 mA	1.25 V @ 200 mA
Operating Temperature	-65°C ~ 175°C	-65°C ~ 200°C
Mounting Type	Surface Mount	Surface Mount
Package / Case	DO-213AC, MINI-MELF, SOD-80	DO-213AC, MINI-MELF, SOD-80
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both TLZ22B-GS18 and CLL5251B TR PBFREE are classified as active components, are RoHS3 compliant, exhibit unlimited moisture sensitivity level (MSL 1), and are unaffected by REACH. Selection may proceed based on available inventory or sourcing requirements.

Frequently Asked Questions (FAQ)

Q1: What are the critical parameters for substituting a Zener diode in this category?
A1: Key parameters include Zener voltage (Vz), maximum power dissipation, Zener impedance (Zzt), reverse leakage current at rated voltage, forward voltage at specified current, operating temperature range, package type, mounting style, and compliance status.

Q2: Is package compatibility guaranteed between TLZ22B-GS18 and CLL5251B TR PBFREE?
A2: Both devices use the DO-213AC, MINI-MELF, SOD-80 package, which ensures mechanical and PCB compatibility.

Q3: Are there any differences in compliance or environmental status between these parts?
A3: Both parts are RoHS3 compliant, REACH unaffected, and have MSL 1 (unlimited).

Q4: Can these substitute parts be used interchangeably in automated assembly?
A4: Both devices feature surface-mount technology in SOD-80 packaging, making them suitable for automated assembly processes.

Q5: What should be considered regarding inventory and product status?
A5: Both TLZ22B-GS18 and CLL5251B TR PBFREE are active product lines and available in new original stock, supporting supply chain flexibility.

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