FLZ20VC Equivalent & Substitute Parts

Part Overview

The FLZ20VC is a Zener diode manufactured by onsemi, rated at 19.8 V nominal with 500 mW power dissipation 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. Substitute parts must maintain electrical performance within acceptable tolerance ranges while meeting current manufacturing and compliance standards.

Substiute Parts

FLZ20VC

onsemiIn Stock: 1154FLZ20VC Datasheet

Current PartRFQ

BZV55-C20,115

Nexperia USA Inc.In Stock: 4365BZV55-C20,115 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FLZ20VC is based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Zener voltage nominal rating within acceptable circuit tolerance
• Power dissipation capacity equal to or greater than 500 mW
• Reverse leakage current performance suitable for application requirements
• Forward voltage characteristics compatible with circuit operation
• Operating temperature range encompassing or exceeding -65°C to 175°C

Mechanical Compatibility Criteria:

• Surface mount package type (SOD-80 / DO-213AC / MINI-MELF)
• Moisture sensitivity level MSL 1 or equivalent

The BZV55-C20,115 from Nexperia USA Inc. qualifies as a substitute based on matching power rating (500 mW), compatible package format (MINI-MELF / SOD-80), and extended operating temperature range. The nominal Zener voltage of 20 V represents a 1% deviation from the FLZ20VC specification, which falls within typical circuit tolerance margins for voltage regulation applications.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The FLZ20VC is classified as obsolete, while the BZV55-C20,115 maintains active product status with current manufacturing support. For new designs and production continuity, the BZV55-C20,115 is the appropriate selection.

Compliance and Certification: Both parts share identical REACH status (REACH Unaffected) and ECCN classification (EAR99). The BZV55-C20,115 carries RoHS3 compliance certification, providing additional regulatory alignment for modern manufacturing environments.

Electrical Performance Alignment: The 1% nominal voltage deviation (19.8 V to 20 V) is within standard circuit tolerance for Zener regulation applications. The higher impedance of the BZV55-C20,115 (55 Ohms versus 23.5 Ohms) requires circuit-level evaluation to confirm acceptable voltage regulation performance under load conditions. The lower reverse leakage current of the substitute part (50 nA versus 133 nA) represents improved performance characteristics.

Thermal Operating Range: The BZV55-C20,115 extends the upper operating temperature limit to 200°C, providing enhanced thermal margin for applications operating near the FLZ20VC maximum of 175°C.

Frequently Asked Questions (FAQ)

Q: Can the BZV55-C20,115 directly replace the FLZ20VC in existing circuit designs?

A: Direct substitution is mechanically and functionally feasible based on matching package format, power rating, and operating temperature range. However, circuit-level validation is required to confirm acceptable performance given the 1% nominal voltage difference and higher impedance specification of the substitute part.

Q: What is the significance of the impedance difference between these parts?

A: Impedance (Zzt) affects the dynamic regulation characteristics of the Zener diode. The FLZ20VC impedance of 23.5 Ohms provides tighter voltage regulation compared to the BZV55-C20,115 at 55 Ohms. Applications requiring precise voltage stability should evaluate this parameter against circuit requirements.

Q: Why does the BZV55-C20,115 have a wider tolerance specification?

A: The BZV55-C20,115 carries ±5% tolerance versus the FLZ20VC ±3% tolerance. Circuit designs must accommodate this wider tolerance band. The 1% nominal voltage difference combined with ±5% tolerance results in a maximum deviation of approximately ±6% from the FLZ20VC nominal value.

Q: Are the package formats truly equivalent?

A: Both parts utilize DO-213AC, MINI-MELF, and SOD-80 package designations, confirming mechanical and footprint compatibility for surface mount assembly. Moisture sensitivity levels are identical at MSL 1 (Unlimited), eliminating special handling requirements.

Q: What is the inventory status for these parts?

A: The FLZ20VC maintains 1,048 pieces in stock as new original inventory. The BZV55-C20,115 has 4,304 pieces available. Given the obsolete status of the FLZ20VC, the BZV55-C20,115 represents the sustainable long-term supply option.

Q: How do the reverse leakage current specifications compare?

A: The BZV55-C20,115 exhibits lower reverse leakage (50 nA @ 14 V) compared to the FLZ20VC (133 nA @ 15 V). This represents improved performance and reduced power consumption in standby conditions. The test conditions differ slightly, but the trend indicates superior leakage characteristics for the substitute part.

Q: What compliance certifications apply to the BZV55-C20,115?

A: The BZV55-C20,115 is RoHS3 compliant and carries REACH Unaffected status, matching the regulatory framework of the FLZ20VC. Both parts share identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications.