FLZ11VB Equivalent & Substitute Parts

Part Overview

The FLZ11VB is a Zener diode manufactured by onsemi, rated at 10.7 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. Active equivalent models maintain the same electrical performance envelope while offering current manufacturing availability and compliance certifications.

Substiute Parts

FLZ11VB

onsemiIn Stock: 27797FLZ11VB Datasheet

Current PartRFQ

BZV55-C11,115

Nexperia USA Inc.In Stock: 5661BZV55-C11,115 Datasheet

SimilarRFQ

BZV55-C11,135

NXP USA Inc.In Stock: 161148BZV55-C11,135 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FLZ11VB are qualified based on the following electrical and mechanical compatibility criteria:

Primary Substitution Parameters:

• Zener voltage rating within acceptable circuit tolerance
• Power dissipation capacity of 500 mW minimum
• Surface mount package compatibility (DO-213AC, MINI-MELF, SOD-80)
• Operating temperature range encompassing or exceeding -65°C to 175°C
• Reverse leakage current specifications suitable for application requirements

The BZV55-C11 series (both tape & reel and bulk variants) qualifies as equivalent substitutes. These parts maintain the 500 mW power rating and surface mount package format. The nominal Zener voltage of 11 V represents a 0.3 V deviation from the FLZ11VB specification, within typical circuit design tolerances for voltage regulation applications. Both substitute parts are active products with current manufacturing status and full compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

BZV55-C11,115 (Tape & Reel Packaging)

This variant is recommended for production environments requiring tape and reel packaging for automated assembly processes. The part maintains active product status with current manufacturing support from Nexperia USA Inc. The extended operating temperature range to 200°C provides additional thermal margin beyond the FLZ11VB specification. Moisture sensitivity level 1 classification ensures compatibility with standard storage and handling protocols.

BZV55-C11,135 (Bulk Packaging)

This variant is suitable for applications where bulk packaging is acceptable or preferred. Manufactured by NXP USA Inc., this part offers the highest inventory availability (161,099 pieces in stock) among the substitute options. Active product status ensures long-term supply chain continuity. The bulk packaging format accommodates manual assembly, prototyping, and lower-volume production scenarios.

Substitution Feasibility

Both BZV55-C11 variants are direct functional equivalents for the obsolete FLZ11VB. The 0.3 V nominal voltage difference (11 V versus 10.7 V) falls within standard circuit design tolerances for Zener diode applications. Identical power ratings, package formats, and surface mount compatibility enable direct board-level substitution without layout modifications. Both substitute parts carry REACH compliance and EAR99 export classification matching the original component.

Frequently Asked Questions (FAQ)

Q: Can the BZV55-C11 series directly replace the FLZ11VB without circuit modifications?

A: Yes. Both substitute parts maintain identical 500 mW power dissipation, surface mount package format (DO-213AC, MINI-MELF, SOD-80), and operating temperature range encompassing the original specification. The 0.3 V nominal voltage difference is within acceptable tolerance for standard voltage regulation circuits.

Q: What is the significance of the voltage tolerance difference (±3% versus ±5%)?

A: The FLZ11VB specifies ±3% tolerance, while BZV55-C11 variants specify ±5%. This represents a wider acceptable voltage band for the substitute parts. In applications requiring tighter voltage regulation, circuit design margins should be verified against the ±5% tolerance specification.

Q: Are there packaging differences between BZV55-C11,115 and BZV55-C11,135?

A: The primary difference is packaging format. BZV55-C11,115 is supplied in tape and reel (TR) format for automated assembly. BZV55-C11,135 is supplied in bulk format. Both use identical LLDS (MiniMelf) package geometry compatible with SOD-80 specifications. Selection depends on assembly process requirements.

Q: What is the impedance difference, and does it affect circuit performance?

A: The FLZ11VB specifies 8.5 Ohms maximum impedance, while BZV55-C11 variants specify 20 Ohms maximum. Lower impedance provides better high-frequency noise filtering characteristics. Applications requiring impedance specifications below 20 Ohms should be evaluated against actual circuit requirements.

Q: Do the substitute parts have compliance certifications?

A: Yes. Both BZV55-C11 variants carry REACH Unaffected status and EAR99 export classification, matching the original FLZ11VB. BZV55-C11,115 carries RoHS3 compliance certification. Moisture sensitivity level 1 (Unlimited) applies to all three parts.

Q: What is the inventory status for each substitute?

A: BZV55-C11,115 has 5,605 pieces in stock. BZV55-C11,135 has 161,099 pieces in stock. Both are active products with current manufacturing support, ensuring long-term availability compared to the obsolete FLZ11VB.