TLZ18C-GS18 Equivalent & Substitute Parts

Part Overview

The TLZ18C-GS18 is an 18 V, 500 mW Zener diode manufactured by Vishay General Semiconductor - Diodes Division in SOD-80 MiniMELF surface mount packaging. This component is classified as an active product and is RoHS3 compliant. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage applications in electronic circuits. Substitute parts may be required due to inventory constraints, supply chain considerations, or design optimization needs while maintaining equivalent electrical and mechanical performance.

Substiute Parts

TLZ18C-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 1121TLZ18C-GS18 Datasheet

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CLL5248B TR PBFREE

Central Semiconductor CorpIn Stock: 5552CLL5248B TR PBFREE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLZ18C-GS18 is determined by the following critical parameters:

Electrical Equivalence Criteria:

• Zener voltage rating of 18 V nominal
• Maximum power dissipation of 500 mW
• Surface mount technology compatibility

Mechanical Compatibility Criteria:

• Package type: SOD-80 MiniMELF (DO-213AC)
• Tape & Reel (TR) packaging format
• Pin-to-pin and footprint compatibility

Compliance & Regulatory Criteria:

• RoHS3 compliance
• REACH unaffected status
• ECCN EAR99 classification

The substitute part CLL5248B TR PBFREE meets all these criteria while providing equivalent functional performance in the specified application space.

Parameter Comparison

Engineering Selection Recommendations

Both the TLZ18C-GS18 and CLL5248B TR PBFREE are active products with full RoHS3 compliance and REACH unaffected status, making them suitable for current design implementations and future regulatory requirements.

The CLL5248B TR PBFREE offers an extended operating temperature range (-65°C to 200°C versus -65°C to 175°C), lower forward voltage drop (1.25 V versus 1.5 V at 200 mA), and slightly lower impedance (21 Ohms versus 23 Ohms). These characteristics may provide performance advantages in temperature-sensitive or efficiency-critical applications.

Both parts are packaged identically in SOD-80 MiniMELF format with Tape & Reel delivery, ensuring mechanical and assembly compatibility. Selection between these parts should be based on application-specific requirements regarding operating temperature, forward voltage characteristics, and impedance specifications.

Frequently Asked Questions (FAQ)

Q: Are the TLZ18C-GS18 and CLL5248B TR PBFREE mechanically interchangeable?

A: Yes. Both components use identical SOD-80 MiniMELF packaging (DO-213AC case style) and are supplied in Tape & Reel format. Footprint and pin spacing are equivalent, allowing direct substitution on printed circuit boards without layout modifications.

Q: What is the primary difference in electrical performance between these two parts?

A: The CLL5248B TR PBFREE has a lower forward voltage drop (1.25 V versus 1.5 V at 200 mA), lower impedance (21 Ohms versus 23 Ohms), and an extended maximum operating temperature (200°C versus 175°C). Both maintain the same 18 V nominal Zener voltage and 500 mW power rating.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the TLZ18C-GS18 and CLL5248B TR PBFREE are RoHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Q: Does the CLL5248B TR PBFREE have a specified tolerance on the Zener voltage?

A: Yes. The CLL5248B TR PBFREE is specified with ±5% tolerance on the 18 V Zener voltage. The TLZ18C-GS18 does not list a tolerance specification in the provided data.

Q: Can these parts be used interchangeably in all applications?

A: Substitution is valid for applications where the electrical parameters of both parts fall within circuit design requirements. The extended temperature range and improved forward voltage characteristics of the CLL5248B TR PBFREE may be advantageous in specific thermal or efficiency-sensitive designs.