TLZ9V1C-GS18 Equivalent & Substitute Parts

Part Overview

The TLZ9V1C-GS18 is an active-status zener diode manufactured by Vishay General Semiconductor - Diodes Division. This component is a 9.1 V, 500 mW surface mount zener diode in SOD-80 MiniMELF packaging, designed for voltage regulation and protection applications in electronic circuits. The part is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when the main part experiences supply constraints, extended lead times, or inventory depletion, while maintaining electrical and mechanical compatibility within specified tolerance ranges.

Substiute Parts

TLZ9V1C-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 803TLZ9V1C-GS18 Datasheet

Current PartRFQ

CLL5239B TR PBFREE

Central Semiconductor CorpIn Stock: 15093CLL5239B TR PBFREE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLZ9V1C-GS18 with the CLL5239B TR PBFREE is valid based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Nominal zener voltage: 9.1 V (identical)
• Maximum power dissipation: 500 mW (identical)
• Package type: SOD-80 MiniMELF (identical)
• Mounting configuration: Surface Mount (identical)
• Operating temperature range: Both support -65°C minimum; substitute extends to 200°C versus 175°C maximum
• RoHS compliance: Both ROHS3 compliant
• Moisture sensitivity: Both MSL 1 (Unlimited)

Allowable Parameter Variations:

• Impedance (Max): TLZ9V1C-GS18 specifies 8 Ohms; CLL5239B TR PBFREE specifies 10 Ohms (within acceptable tolerance for zener diode applications)
• Zener voltage tolerance: TLZ9V1C-GS18 tolerance not specified; CLL5239B TR PBFREE specifies ±5% tolerance
• Forward voltage: TLZ9V1C-GS18 specifies 1.5 V @ 200 mA; CLL5239B TR PBFREE specifies 1.25 V @ 200 mA (lower forward voltage is acceptable)
• Reverse leakage current: Specifications differ but both remain within acceptable leakage parameters for zener diode operation

Parameter Comparison

Engineering Selection Recommendations

Both the TLZ9V1C-GS18 and CLL5239B TR PBFREE are active-status products with full regulatory compliance. Selection between these parts is determined by availability and application-specific requirements:

TLZ9V1C-GS18 (Vishay): Primary selection when available. Specifies lower maximum impedance (8 Ohms) and higher forward voltage (1.5 V @ 200 mA). Current inventory: 702 pieces.

CLL5239B TR PBFREE (Central Semiconductor): Direct substitute when TLZ9V1C-GS18 is unavailable. Provides extended operating temperature range to 200°C, lower forward voltage (1.25 V @ 200 mA), and higher impedance specification (10 Ohms). Includes explicit ±5% zener voltage tolerance specification. Current inventory: 14,995 pieces.

Both parts meet ROHS3 compliance, REACH unaffected status, and identical packaging requirements. The substitute part offers superior availability and extended temperature performance, making it suitable for applications requiring higher thermal margins or extended supply chain flexibility.

Frequently Asked Questions (FAQ)

Q: Can CLL5239B TR PBFREE be used as a direct replacement for TLZ9V1C-GS18 in all applications?

A: Yes, within the specified electrical and mechanical parameters. Both parts share identical nominal zener voltage (9.1 V), power rating (500 mW), and SOD-80 surface mount packaging. The substitute part's lower forward voltage and extended temperature range provide equivalent or improved performance in most applications.

Q: What is the significance of the impedance difference (8 Ohms vs. 10 Ohms)?

A: Impedance specification defines the dynamic resistance of the zener diode at rated current. The 2-Ohm difference between parts is within acceptable tolerance for zener diode applications and does not prevent substitution. Both values support stable voltage regulation across the specified operating range.

Q: Does the ±5% tolerance specification on the substitute part affect compatibility?

A: No. The CLL5239B TR PBFREE tolerance specification of ±5% on the 9.1 V nominal voltage is a manufacturing specification that ensures the part meets the 9.1 V requirement. This does not prevent substitution and provides explicit tolerance documentation.

Q: Are there temperature-related considerations when selecting between these parts?

A: The CLL5239B TR PBFREE extends the maximum operating temperature to 200°C compared to the TLZ9V1C-GS18 at 175°C. Both support the minimum temperature of -65°C. Selection depends on application thermal requirements. The extended range of the substitute part provides additional margin for high-temperature environments.

Q: Is the packaging identical between both parts?

A: Yes. Both parts use DO-213AC, MINI-MELF, SOD-80 packaging with surface mount configuration. No PCB layout or assembly process modifications are required when substituting between these parts.

Q: What is the reverse leakage current difference, and does it matter?

A: The TLZ9V1C-GS18 specifies 40 nA @ 8.39 V, while the CLL5239B TR PBFREE specifies 3 µA @ 7 V. Both values are within acceptable leakage parameters for zener diode operation. The difference reflects measurement conditions rather than functional incompatibility. Selection is not affected by this parameter variance.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. No additional compliance documentation or testing is required when substituting between these parts.