FLZ2V4A Equivalent & Substitute Parts

Part Overview

The FLZ2V4A is a Zener diode manufactured by onsemi, rated at 2.4 V nominal with 500 mW power dissipation capability in a surface mount SOD-80 package. This component is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. The part maintains 29,961 units in current inventory stock.

Substitution is required due to the obsolete product status of the FLZ2V4A. Active equivalent parts ensure long-term supply chain continuity and access to current manufacturing processes.

Substiute Parts

FLZ2V4A

onsemiIn Stock: 30028FLZ2V4A Datasheet

Current PartRFQ

BZV55-B2V4,115

NXP SemiconductorsIn Stock: 146848BZV55-B2V4,115 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FLZ2V4A is based on the following critical electrical and mechanical parameters:

Primary Matching Criteria:

• Nominal Zener voltage: 2.4 V
• Maximum power dissipation: 500 mW
• Surface mount packaging: SOD-80 / DO-213AC / MINI-MELF
• Operating temperature range compatibility

Secondary Compatibility Factors:

• Zener voltage tolerance (±4% or tighter)
• Reverse leakage current characteristics
• Forward voltage characteristics
• Impedance specifications

The BZV55-B2V4,115 meets all primary matching criteria and qualifies as a direct substitute. This part maintains identical nominal voltage and power ratings while offering improved tolerance (±2% versus ±4%) and extended operating temperature range (-65°C to 200°C versus -65°C to 175°C).

Parameter Comparison

Engineering Selection Recommendations

BZV55-B2V4,115 as Primary Substitute:

The BZV55-B2V4,115 manufactured by NXP Semiconductors is the qualified substitute for the obsolete FLZ2V4A. Selection is based on the following factors:

1. Electrical Equivalence: Identical nominal Zener voltage (2.4 V) and maximum power rating (500 mW) ensure functional compatibility in existing circuit designs.

2. Package Compatibility: Both parts utilize the same physical package format (DO-213AC / MINI-MELF / SOD-80), permitting direct board-level substitution without layout modifications.

3. Active Product Status: The BZV55-B2V4,115 maintains active manufacturing status with 146,814 units in current inventory, ensuring supply chain continuity.

4. Compliance Certification: Both parts carry REACH Unaffected status, confirming regulatory compliance for electronic component applications.

5. Enhanced Performance Characteristics: The substitute part offers tighter voltage tolerance (±2% versus ±4%) and extended operating temperature range (-65°C to 200°C versus -65°C to 175°C), providing improved performance margins in temperature-sensitive applications.

6. Impedance Consideration: The BZV55-B2V4,115 exhibits higher maximum impedance (100 Ohms versus 35 Ohms). Circuit designs must verify that this impedance specification does not impact voltage regulation performance in the specific application.

Frequently Asked Questions (FAQ)

Q: Can the BZV55-B2V4,115 be used as a direct replacement for the FLZ2V4A in existing designs?

A: Yes. Both parts share identical nominal Zener voltage (2.4 V), maximum power dissipation (500 mW), and surface mount package format (SOD-80). Direct substitution is permissible at the board level without design modifications.

Q: What is the significance of the tolerance difference between ±4% and ±2%?

A: The BZV55-B2V4,115 provides tighter voltage tolerance, resulting in more precise Zener voltage regulation. This characteristic improves circuit performance in applications requiring strict voltage stability. The FLZ2V4A's ±4% tolerance remains within acceptable limits for most standard applications.

Q: Does the higher impedance of the BZV55-B2V4,115 (100 Ohms versus 35 Ohms) affect circuit performance?

A: Impedance specifications influence voltage regulation characteristics under varying load conditions. Designs operating near maximum power dissipation or requiring precise voltage stability must verify that the higher impedance of the substitute part does not degrade performance. Circuit simulation or prototype testing is appropriate for critical applications.

Q: Are both parts qualified for the same operating temperature range?

A: The FLZ2V4A operates from -65°C to 175°C, while the BZV55-B2V4,115 extends to -65°C to 200°C. The substitute part accommodates a wider temperature range, providing additional margin for high-temperature applications. Designs limited to the FLZ2V4A's original range remain compatible with the substitute.

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

A: The BZV55-B2V4,115 exhibits lower reverse leakage current (50 µA @ 1 V versus 84 µA @ 1 V). Lower leakage reduces power consumption in standby conditions and improves circuit efficiency. This represents an enhancement over the original part specification.

Q: Are there any compliance or certification differences between these parts?

A: Both parts carry identical REACH Unaffected status, confirming regulatory compliance. No compliance barriers exist for substitution in regulated applications.

Q: What packaging options are available for both parts?

A: Both the FLZ2V4A and BZV55-B2V4,115 are supplied in DO-213AC, MINI-MELF, and SOD-80 package formats. Physical dimensions and pin configurations are identical, ensuring seamless board-level compatibility.