TLZ20-GS18 Equivalent & Substitute Parts Reference

Part Overview

The TLZ20-GS18, manufactured by Vishay General Semiconductor - Diodes Division, is a surface-mount Zener diode rated at 20 V Zener voltage and 500 mW maximum power, supplied in the SOD-80 MiniMELF package. The device is classified as active and features ROHS3 and REACH compliance. Identifying alternative Zener diode models is necessary for design flexibility, maintaining supply chain continuity, and supporting manufacturing processes in the event of allocation issues or specific inventory requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	TLZ20-GS18
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Diodes, Zener
Packaging	Tape & Reel (TR)
Voltage - Zener (Nom) (Vz)	20 V
Power - Max	500 mW
Impedance (Max) (Zzt)	28 Ohms
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
Supplier Device Package	SOD-80 MiniMELF
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute Zener diodes for TLZ20-GS18 are determined by exact or matched electrical and package specifications: Zener voltage (20 V nominal), maximum power dissipation (500 mW), maximum Zener impedance, forward voltage, operating temperature range, mounting type (Surface Mount), and package (DO-213AC, MINI-MELF, SOD-80). Compliance features such as RoHS3 and REACH status, MSL level, and active product classification are included as required by standard documentation and supply requirements.

Parameter Comparison

Parameter	TLZ20-GS18	CLL5250B TR PBFREE
Manufacturer	Vishay General Semiconductor - Diodes Division	Central Semiconductor Corp
Category	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom) (Vz)	20 V	20 V
Power - Max	500 mW	500 mW
Impedance (Max) (Zzt)	28 Ohms	25 Ohms
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
Supplier Device Package	SOD-80 MiniMELF	SOD-80
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected
Product Status	Active	Active

Engineering Selection Recommendations

Both TLZ20-GS18 and CLL5250B TR PBFREE are classified as active devices, are ROHS3 compliant, REACH unaffected, and have a Moisture Sensitivity Level of 1 (Unlimited). These factors allow direct substitution based on regulatory conformity and supply compatibility as indicated in the provided inventory and compliance data.

Frequently Asked Questions (FAQ)

Q1: What are the main electrical parameters required for substituting a Zener diode in this category?
A1: Main parameters include Zener voltage (nominal), maximum power rating, maximum Zener impedance, and maximum forward voltage at the specified forward current.

Q2: Why is package compatibility important for substituting Zener diodes?
A2: Correct package and mounting type (here: DO-213AC, MINI-MELF, SOD-80; Surface Mount) ensure mechanical fit and consistent assembly process.

Q3: Are regulatory statuses like RoHS or REACH relevant in selecting substitutes?
A3: Yes, matching RoHS and REACH status is required for process and regional compliance.

Q4: Can all SOD-80 Zener diodes be directly substituted for TLZ20-GS18?
A4: Only SOD-80 Zener diodes with matching voltage, power rating, and impedance parameters qualify as substitutes based on the specified data.

Q5: How is the maximum operating temperature considered in selection?
A5: Substitute diodes must meet or exceed the operating temperature range as specified for TLZ20-GS18 to maintain compatibility.

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