TLZ3V9B-GS08 Equivalent & Substitute Parts

Part Overview

The TLZ3V9B-GS08 is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated at 3.9 V nominal with 500 mW maximum power dissipation in a Surface Mount SOD-80 MiniMELF package. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs while maintaining circuit functionality and reliability standards.

Substiute Parts

TLZ3V9B-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 45333TLZ3V9B-GS08 Datasheet

Current PartRFQ

BZV55-B3V9,115

Nexperia USA Inc.In Stock: 6816BZV55-B3V9,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLZ3V9B-GS08 is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Zener voltage nominal rating: 3.9 V
• Maximum power dissipation: 500 mW
• Reverse leakage current: 3 µA @ 1 V
• Operating temperature range compatibility: minimum -65°C, maximum 175°C or higher

Mechanical Equivalence Criteria:

• Package type: DO-213AC, MINI-MELF, SOD-80
• Mounting type: Surface Mount
• Physical form factor: MiniMELF

Compliance Equivalence Criteria:

• RoHS3 compliance status
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH unaffected status

The BZV55-B3V9,115 meets all electrical and mechanical substitution requirements while maintaining full compliance with applicable standards and certifications.

Parameter Comparison

Engineering Selection Recommendations

The BZV55-B3V9,115 manufactured by Nexperia USA Inc. is a direct substitute for the TLZ3V9B-GS08. Both components are Active product status and maintain full ROHS3 compliance with MSL 1 (Unlimited) rating, ensuring equivalent reliability and regulatory standing.

The substitute part provides an extended operating temperature range (-65°C to 200°C versus -65°C to 175°C), which offers additional thermal margin in applications requiring higher temperature operation. The substitute includes a specified tolerance of ±2% on the Zener voltage, providing tighter voltage regulation compared to the main part.

The impedance specification differs between the two parts (50 Ohms maximum for TLZ3V9B-GS08 versus 90 Ohms maximum for BZV55-B3V9,115). Circuit designs dependent on low impedance characteristics for transient response or noise filtering require evaluation of this parameter difference.

Both components are packaged identically in DO-213AC MiniMELF SOD-80 surface mount form factor, ensuring mechanical and thermal compatibility on printed circuit boards without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the BZV55-B3V9,115 be used as a direct replacement for the TLZ3V9B-GS08 in existing designs?

A: Yes. Both components share identical Zener voltage (3.9 V), power rating (500 mW), reverse leakage current (3 µA @ 1 V), package type (SOD-80 MiniMELF), and compliance certifications (ROHS3, MSL 1). The substitute is mechanically and electrically compatible for direct board-level substitution.

Q: What is the significance of the impedance difference between these parts?

A: The TLZ3V9B-GS08 specifies maximum impedance of 50 Ohms, while the BZV55-B3V9,115 specifies 90 Ohms maximum. Impedance affects transient response and high-frequency performance. Applications requiring specific impedance characteristics for noise suppression or transient protection should evaluate this parameter against circuit requirements.

Q: Does the extended temperature range of the substitute part affect compatibility?

A: No. The BZV55-B3V9,115 operating range of -65°C to 200°C encompasses the main part range of -65°C to 175°C. The extended upper temperature limit provides additional operational margin and does not compromise compatibility in applications operating within the original temperature specification.

Q: Are the forward voltage specifications comparable between these parts?

A: No. The specifications are measured at different test conditions: TLZ3V9B-GS08 at 1.5 V @ 200 mA versus BZV55-B3V9,115 at 900 mV @ 10 mA. These different test currents and conditions prevent direct comparison. Forward voltage is not a primary selection criterion for Zener diode substitution in voltage regulation applications.

Q: What packaging considerations apply to this substitution?

A: Both components use identical packaging: DO-213AC MiniMELF SOD-80 surface mount. No PCB layout, footprint, or reflow process modifications are required. Tape & Reel packaging of the substitute does not affect component performance or board assembly compatibility.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the TLZ3V9B-GS08 and BZV55-B3V9,115 are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. Regulatory and environmental compliance is equivalent between the two parts.