TLZ12B-GS08 Equivalent & Substitute Parts

Part Overview

The TLZ12B-GS08 is a 12 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 with full RoHS3 compliance and unlimited moisture sensitivity rating. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage applications across industrial, automotive, and consumer electronics circuits. Equivalent and substitute parts may be required due to supply chain constraints, design revisions, manufacturing discontinuation, or specific application requirements that demand alternative electrical or mechanical characteristics.

Substiute Parts

TLZ12B-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1453TLZ12B-GS08 Datasheet

Current PartRFQ

1N4106UR-1

Microchip TechnologyIn Stock: 12871N4106UR-1 Datasheet

MFR RecommendedRFQ

CLL5242B TR PBFREE

Central Semiconductor CorpIn Stock: 4499CLL5242B TR PBFREE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLZ12B-GS08 is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Zener voltage: 12 V nominal
• Power dissipation: 500 mW maximum
• Mounting type: Surface mount
• Operating temperature range: Minimum -65°C to 175°C
• Reverse leakage current: Specified at rated voltage
• Forward voltage drop: Maximum at 200 mA forward current

Secondary Compatibility Factors:

• Package compatibility: SOD-80 MiniMELF or equivalent DO-213AC footprint
• Impedance characteristics: Maximum dynamic impedance
• Compliance certifications: RoHS3 status and REACH compliance

The substitute parts listed below meet the core electrical specifications (12 V, 500 mW) and operate within the required temperature range. Variations in impedance, leakage current, and forward voltage are documented to enable informed selection based on circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

TLZ12B-GS08 (Vishay General Semiconductor - Diodes Division)

Primary selection for applications requiring RoHS3 compliance and SOD-80 MiniMELF packaging. This part exhibits the lowest maximum impedance (12 Ohms) among the three options, providing superior voltage regulation characteristics in applications sensitive to dynamic impedance. Maintains full compliance with environmental and regulatory requirements. Suitable for new designs and applications with strict compliance mandates.

1N4106UR-1 (Microchip Technology)

This substitute is electrically compatible with the TLZ12B-GS08 in terms of nominal voltage and power rating. However, it carries RoHS non-compliance status, restricting its use to applications where RoHS3 compliance is not required. The DO-213AA package differs from the SOD-80 MiniMELF footprint, requiring PCB layout verification before substitution. The higher impedance (200 Ohms maximum) may impact voltage regulation performance in precision applications. This part is suitable only for legacy systems or applications with explicit non-compliance allowances.

CLL5242B TR PBFREE (Central Semiconductor Corp)

This substitute provides direct mechanical and electrical compatibility with the TLZ12B-GS08, featuring identical SOD-80 MiniMELF packaging and RoHS3 compliance. The impedance specification (30 Ohms maximum) falls between the primary part and the Microchip alternative, offering acceptable voltage regulation characteristics for most applications. The extended operating temperature range (-65°C to 200°C) provides additional thermal margin. This part is suitable as a direct replacement in applications where supply constraints affect the primary part.

Frequently Asked Questions (FAQ)

Q: Can the 1N4106UR-1 be used as a direct replacement for the TLZ12B-GS08?

A: The 1N4106UR-1 meets the core electrical specifications (12 V, 500 mW) and operating temperature range. However, the DO-213AA package differs from the SOD-80 MiniMELF footprint of the TLZ12B-GS08, requiring PCB layout verification. Additionally, the 1N4106UR-1 is RoHS non-compliant, which may violate design requirements for regulated applications. The higher impedance (200 Ohms) may affect voltage regulation performance.

Q: What is the significance of impedance differences among these parts?

A: Dynamic impedance (Zzt) affects the Zener diode's ability to maintain stable voltage across varying load currents. The TLZ12B-GS08 has the lowest impedance at 12 Ohms, providing the tightest voltage regulation. The CLL5242B TR PBFREE at 30 Ohms offers acceptable regulation for most applications. The 1N4106UR-1 at 200 Ohms exhibits higher voltage variation under load changes and is suitable only for applications with relaxed voltage stability requirements.

Q: Are all three parts suitable for RoHS3-compliant designs?

A: No. Only the TLZ12B-GS08 and CLL5242B TR PBFREE carry ROHS3 Compliant status. The 1N4106UR-1 is RoHS non-compliant and cannot be used in designs requiring RoHS3 certification.

Q: What are the package compatibility considerations?

A: The TLZ12B-GS08 and CLL5242B TR PBFREE both use SOD-80 MiniMELF packaging (DO-213AC), ensuring identical PCB footprints and assembly compatibility. The 1N4106UR-1 uses DO-213AA packaging, which has a different footprint and requires PCB layout modification before substitution.

Q: How do reverse leakage currents compare, and does this matter?

A: The TLZ12B-GS08 specifies 40 nA at 10.9 V, the 1N4106UR-1 specifies 50 nA at 9.2 V, and the CLL5242B TR PBFREE specifies 1 µA at 9.1 V. Lower leakage current indicates better diode quality and lower standby power consumption. The CLL5242B TR PBFREE exhibits higher leakage, which may be significant in low-power or precision applications but is acceptable for general voltage regulation circuits.

Q: Can the CLL5242B TR PBFREE replace the TLZ12B-GS08 without design changes?

A: Yes. The CLL5242B TR PBFREE provides direct mechanical and electrical compatibility, featuring identical SOD-80 MiniMELF packaging, RoHS3 compliance, and equivalent operating temperature range. The impedance and leakage specifications differ slightly but remain within acceptable ranges for standard voltage regulation applications.

Q: What is the impact of the extended temperature range in the CLL5242B TR PBFREE?

A: The CLL5242B TR PBFREE operates from -65°C to 200°C, compared to -65°C to 175°C for the TLZ12B-GS08. This extended upper temperature limit provides additional thermal margin in high-temperature environments but does not affect performance in applications operating within the standard -65°C to 175°C range.