FLZ15VC Equivalent & Substitute Parts

Part Overview

The FLZ15VC is a Zener diode manufactured by onsemi, rated at 14.7 V nominal with 500 mW power dissipation in a surface mount SOD-80 (DO-213AC, MINI-MELF) package. The device is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility within specified tolerance ranges and mechanical interchangeability in the SOD-80 package format.

Substiute Parts

FLZ15VC

onsemiIn Stock: 9630FLZ15VC Datasheet

Current PartRFQ

BZV55-B15,115

Nexperia USA Inc.In Stock: 4976BZV55-B15,115 Datasheet

SimilarRFQ

TZM5245B-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 3698TZM5245B-GS08 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FLZ15VC are selected based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Zener voltage nominal rating within acceptable circuit tolerance
• Power dissipation rating of 500 mW (matching maximum power specification)
• Surface mount package compatibility (SOD-80, DO-213AC, MINI-MELF)
• Operating temperature range encompassing or exceeding -65°C to 175°C
• Moisture sensitivity level MSL 1 (Unlimited)

Identified Substitute Parts:

1. BZV55-B15,115 (Nexperia USA Inc.) – Active product with 15 V nominal rating, ±2% tolerance, 500 mW power rating, and extended operating temperature to 200°C
2. TZM5245B-GS08 (Vishay General Semiconductor) – Active product with 15 V nominal rating, ±5% tolerance, 500 mW power rating, and SOD-80 MiniMELF package

Both substitutes maintain the 500 mW power specification and SOD-80 package format. Zener voltage differences (14.7 V vs. 15 V nominal) fall within typical circuit design tolerances for voltage regulation applications.

Parameter Comparison

Engineering Selection Recommendations

BZV55-B15,115 (Nexperia USA Inc.):

• Active product status with ongoing manufacturing and supply availability
• RoHS3 compliant and REACH unaffected
• Tighter tolerance specification (±2%) compared to FLZ15VC (±3%)
• Extended operating temperature range to 200°C provides additional thermal margin
• Lower reverse leakage current (50 nA vs. 133 nA) indicates superior leakage performance
• Suitable for applications requiring enhanced reliability and compliance documentation

TZM5245B-GS08 (Vishay General Semiconductor):

• Active product status with established supply chain
• RoHS3 compliant and REACH unaffected
• Impedance specification (16 Ohms) closely matches FLZ15VC (13.3 Ohms)
• Forward voltage characteristic (1.1 V @ 200 mA) aligns with FLZ15VC specification
• Reverse leakage current (100 nA @ 11 V) falls between FLZ15VC and BZV55-B15,115
• Maintains identical operating temperature lower limit (-65°C) with upper limit matching FLZ15VC (175°C)

Both substitutes provide equivalent electrical performance within standard circuit design tolerances. Selection between BZV55-B15,115 and TZM5245B-GS08 depends on specific application requirements regarding tolerance tightness, leakage current minimization, and thermal operating range.

Frequently Asked Questions (FAQ)

Q: Can BZV55-B15,115 and TZM5245B-GS08 be used interchangeably with FLZ15VC?

A: Both parts are mechanically and electrically compatible substitutes. All three devices share identical SOD-80 package geometry, 500 mW power rating, and surface mount configuration. Zener voltage differences (14.7 V vs. 15 V nominal) are within typical circuit design tolerances for voltage regulation applications.

Q: What is the significance of the ±3%, ±2%, and ±5% tolerance specifications?

A: Tolerance specifications define the acceptable deviation range from nominal Zener voltage. FLZ15VC (±3%) and BZV55-B15,115 (±2%) provide tighter voltage regulation. TZM5245B-GS08 (±5%) offers broader tolerance but remains suitable for applications with less stringent voltage regulation requirements.

Q: Are there compliance or certification differences between the three parts?

A: All three parts carry MSL 1 (Unlimited) moisture sensitivity rating, REACH unaffected status, and EAR99 ECCN classification. BZV55-B15,115 and TZM5245B-GS08 are RoHS3 compliant. FLZ15VC is obsolete and no longer manufactured.

Q: How do impedance specifications affect circuit performance?

A: Impedance (Zzt) affects dynamic resistance and voltage regulation stability. FLZ15VC (13.3 Ohms) and TZM5245B-GS08 (16 Ohms) provide lower impedance compared to BZV55-B15,115 (30 Ohms). Lower impedance generally results in better voltage regulation and reduced output impedance in protection circuits.

Q: What is the impact of reverse leakage current differences?

A: Reverse leakage current affects standby power consumption and circuit performance at low operating currents. BZV55-B15,115 (50 nA @ 10.5 V) exhibits the lowest leakage, followed by TZM5245B-GS08 (100 nA @ 11 V) and FLZ15VC (133 nA @ 11 V). Lower leakage is advantageous in battery-powered and low-power applications.

Q: Are all three parts available in the same packaging format?

A: Yes. All three parts are supplied in SOD-80 (DO-213AC, MINI-MELF) surface mount package. BZV55-B15,115 is available in Cut Tape (CT) and Digi-Reel® packaging. TZM5245B-GS08 is available in Cut Tape (CT), Digi-Reel®, and Tape & Reel (TR) formats.

Q: What is the operating temperature range consideration for substitution?

A: FLZ15VC and TZM5245B-GS08 operate from -65°C to 175°C. BZV55-B15,115 extends to 200°C maximum. For applications operating near 175°C, BZV55-B15,115 provides additional thermal margin. All three parts maintain identical lower temperature limit (-65°C).

Q: Why is FLZ15VC classified as obsolete?

A: Obsolete status indicates the manufacturer (onsemi) has discontinued production. BZV55-B15,115 and TZM5245B-GS08 are active products with ongoing manufacturing support, making them suitable for new designs and long-term production requirements.