FLZ16VB Equivalent & Substitute Parts

Part Overview

The FLZ16VB is a Zener diode manufactured by onsemi, rated at 15.7 V nominal with 500 mW power dissipation in a surface mount SOD-80 package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The FLZ16VB remains available in inventory (2800 pcs), but obsolete status indicates limited future availability and potential supply chain constraints.

Substiute Parts

FLZ16VB

onsemiIn Stock: 2826FLZ16VB Datasheet

Current PartRFQ

TZM5246B-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 25301TZM5246B-GS08 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FLZ16VB is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Zener voltage nominal rating within acceptable circuit tolerance
• Power dissipation rating equal to or greater than 500 mW
• Impedance characteristics suitable for circuit regulation requirements
• Reverse leakage current specifications compatible with circuit bias conditions
• Forward voltage drop within acceptable operating parameters

Mechanical & Environmental Compatibility Criteria:

• Surface mount package type (SOD-80 / DO-213AC / MINI-MELF)
• Operating temperature range encompassing -65°C to 175°C
• Moisture sensitivity level MSL 1 (Unlimited)

Regulatory & Compliance Criteria:

• REACH compliance status
• RoHS compliance status where applicable

The TZM5246B-GS08 qualifies as a substitute based on matching power rating, package type, operating temperature capability, and regulatory compliance, with minor variations in nominal voltage and tolerance specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TZM5246B-GS08

The TZM5246B-GS08 from Vishay General Semiconductor - Diodes Division is the qualified substitute for the obsolete FLZ16VB. Selection is based on the following factors:

Electrical Alignment: The nominal Zener voltage difference of 0.3 V (15.7 V vs. 16 V) is within typical circuit tolerance margins for voltage regulation applications. The identical 500 mW power rating ensures thermal performance equivalence. Impedance variation of 1.8 Ohms represents a 12% difference, which is acceptable for most regulation circuits. The TZM5246B-GS08 exhibits superior reverse leakage characteristics (100 nA vs. 133 nA) and lower forward voltage drop (1.1 V vs. 1.2 V).

Mechanical & Package Compatibility: Both components utilize identical SOD-80 surface mount packaging with DO-213AC and MINI-MELF designations, ensuring direct PCB footprint compatibility without layout modifications.

Regulatory & Supply Status: The TZM5246B-GS08 is actively manufactured with 25,200 pcs in inventory, compared to the obsolete FLZ16VB with limited stock (2,800 pcs). Both components maintain REACH compliance and MSL 1 moisture sensitivity rating. The substitute carries RoHS3 compliance certification.

Procurement Advantage: Active product status of the TZM5246B-GS08 provides long-term supply chain security and eliminates obsolescence risk associated with the FLZ16VB.

Frequently Asked Questions (FAQ)

Q: Can the TZM5246B-GS08 be used as a direct replacement for the FLZ16VB without circuit modifications?

A: Yes. Both components share identical package geometry (SOD-80), pinout configuration, and power rating (500 mW). The 0.3 V nominal voltage difference and minor impedance variation are within acceptable tolerances for standard voltage regulation applications. No PCB layout changes are required.

Q: What is the significance of the ±3% tolerance on the FLZ16VB versus the ±5% tolerance on the TZM5246B-GS08?

A: The FLZ16VB offers tighter voltage tolerance, resulting in more precise Zener voltage at 15.7 V ±0.47 V. The TZM5246B-GS08 provides 16 V ±0.8 V tolerance. For applications requiring strict voltage regulation, the wider tolerance of the substitute may require circuit verification. For most standard applications, the difference is negligible.

Q: Are there any temperature operating range limitations when substituting the TZM5246B-GS08?

A: The FLZ16VB specifies -65°C to 175°C operating range. The TZM5246B-GS08 datasheet indicates a maximum temperature of 175°C. The minimum operating temperature for the substitute is not provided in the available specifications. Applications requiring operation below 0°C should verify TZM5246B-GS08 performance through the manufacturer's complete datasheet.

Q: What is the packaging difference between the FLZ16VB and TZM5246B-GS08?

A: Both components are supplied in SOD-80 surface mount packages. The FLZ16VB is available in standard packaging, while the TZM5246B-GS08 is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated assembly processes and does not affect component electrical or mechanical specifications.

Q: How do the reverse leakage current specifications compare?

A: The FLZ16VB exhibits 133 nA reverse leakage at 12 V, while the TZM5246B-GS08 exhibits 100 nA at the same bias condition. The substitute demonstrates lower leakage, which is advantageous for applications sensitive to bias current or requiring minimal standby power consumption.

Q: Is the TZM5246B-GS08 suitable for high-reliability applications?

A: The TZM5246B-GS08 carries active product status with RoHS3 compliance and REACH compliance certification. These regulatory qualifications support use in commercial and industrial applications. Specific high-reliability qualifications (military grade, automotive AEC-Q, etc.) are not indicated in the provided specifications and should be verified through the manufacturer if required.