FLZ12VC Equivalent & Substitute Parts

Part Overview

The FLZ12VC is a Zener diode manufactured by onsemi, rated at 12.1 V nominal with 500 mW power dissipation in a surface mount SOD-80 (DO-213AC, MINI-MELF) package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The FLZ12VC operates across a temperature range of -65°C to 175°C with ±3% voltage tolerance and is suitable for voltage regulation and protection applications in electronic circuits.

Substiute Parts

FLZ12VC

onsemiIn Stock: 2427FLZ12VC Datasheet

Current PartRFQ

TZM5242B-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 20432TZM5242B-GS08 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FLZ12VC is determined by the following critical parameters:

Primary Matching Criteria:

• Zener voltage nominal rating within acceptable circuit tolerance
• Power dissipation capacity of 500 mW
• Surface mount package format (SOD-80, DO-213AC, MINI-MELF)
• Operating temperature range compatibility

Secondary Compatibility Factors:

• Voltage tolerance specification
• Impedance characteristics
• Reverse leakage current specifications
• Forward voltage characteristics

The TZM5242B-GS08 qualifies as a substitute based on matching power rating (500 mW), identical package format (SOD-80, DO-213AC, MINI-MELF), and compatible zener voltage specification (12 V nominal versus 12.1 V nominal). Both components operate within overlapping temperature ranges and maintain surface mount configuration. The substitute part is currently in active production status, addressing the obsolescence of the original FLZ12VC.

Parameter Comparison

Engineering Selection Recommendations

The TZM5242B-GS08 serves as the primary substitute for the obsolete FLZ12VC based on the following engineering factors:

Product Status Alignment: The TZM5242B-GS08 maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete FLZ12VC.

Compliance and Certifications: Both components share identical REACH status (REACH Unaffected) and ECCN classification (EAR99). The TZM5242B-GS08 carries RoHS3 compliance certification, meeting current regulatory requirements for electronic components.

Package and Mounting Compatibility: Both parts utilize identical surface mount packaging (SOD-80, DO-213AC, MINI-MELF), enabling direct board-level substitution without PCB redesign.

Electrical Parameter Compatibility: The nominal zener voltage difference of 0.1 V (12.1 V versus 12 V) falls within standard circuit tolerance margins for voltage regulation applications. The substitute part's lower forward voltage (1.1 V versus 1.2 V) and lower impedance characteristics present favorable performance characteristics in most applications.

Moisture Sensitivity: Both components carry MSL rating of 1 (Unlimited), indicating identical moisture handling requirements.

Selection of the TZM5242B-GS08 is appropriate for applications where the FLZ12VC was previously specified, provided circuit design tolerances accommodate the noted parameter variations.

Frequently Asked Questions (FAQ)

Q: Can the TZM5242B-GS08 be used as a direct replacement for the FLZ12VC in existing designs?

A: Yes. Both components share identical package format (SOD-80), mounting type (surface mount), and power rating (500 mW). The 0.1 V zener voltage difference and tolerance variation require circuit-level evaluation to confirm compatibility with specific voltage regulation requirements.

Q: What are the key differences between these two zener diodes?

A: The primary differences are: (1) Zener voltage tolerance: FLZ12VC is ±3% versus TZM5242B-GS08 at ±5%; (2) Impedance: FLZ12VC has 9.5 Ohms maximum versus 30 Ohms for the substitute; (3) Reverse leakage current: FLZ12VC specifies 133 nA @ 9 V versus 1 µA @ 9.1 V for the substitute; (4) Product status: FLZ12VC is obsolete while TZM5242B-GS08 is active production.

Q: Are there packaging or tape & reel considerations for the substitute part?

A: The TZM5242B-GS08 is supplied in Tape & Reel (TR) packaging format, whereas the FLZ12VC packaging format is not specified in available data. Both components use identical SOD-80 MiniMELF package geometry, ensuring mechanical compatibility on standard pick-and-place equipment.

Q: What is the temperature operating range for each component?

A: The FLZ12VC operates from -65°C to 175°C. The TZM5242B-GS08 specification indicates operation up to 175°C maximum. For applications requiring the full -65°C lower temperature limit, circuit performance at minimum temperature should be evaluated.

Q: Do both components meet current regulatory compliance standards?

A: Both components carry REACH Unaffected status and EAR99 ECCN classification. The TZM5242B-GS08 additionally carries RoHS3 compliance certification, meeting current regulatory requirements for new component procurement and design implementation.

Q: What moisture sensitivity level applies to these components?

A: Both the FLZ12VC and TZM5242B-GS08 carry MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow processing.