BZX84W-B20F Equivalent & Substitute Parts

Part Overview

The BZX84W-B20F is an active Zener diode manufactured by Nexperia USA Inc., designed for voltage regulation and protection applications in surface mount configurations. This component operates at a nominal Zener voltage of 20 V with a maximum power dissipation of 275 mW in a compact SOT-323 package. The part is ROHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1), making it suitable for standard manufacturing environments. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

BZX84W-B20F

Nexperia USA Inc.In Stock: 10657BZX84W-B20F Datasheet

Current PartRFQ

BZX84W-B20X

Nexperia USA Inc.In Stock: 1101BZX84W-B20X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZX84W-B20F is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part BZX84W-B20X is classified as a parametric equivalent based on the following criteria:

Critical Substitution Parameters:

• Nominal Zener voltage: 20 V (exact match)
• Tolerance specification: ±2% (exact match)
• Maximum power dissipation: 275 mW (exact match)
• Maximum impedance: 55 Ohms (exact match)
• Reverse leakage current: 50 nA @ 14 V (exact match)
• Forward voltage: 900 mV @ 10 mA (exact match)
• Operating temperature range: 150°C (TJ) (exact match)
• Package designation: SOT-323 (exact match)
• Mounting configuration: Surface Mount (exact match)

Both parts belong to the BZX84W series and share identical electrical performance characteristics, compliance certifications (ROHS3, REACH Unaffected), and supplier device packaging specifications. The difference in packaging designation (Tape & Reel) does not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both BZX84W-B20F and BZX84W-B20X are active products manufactured by Nexperia USA Inc. with identical electrical specifications and regulatory compliance status. Selection between these parts is based on availability and supply chain requirements rather than technical performance differentiation.

BZX84W-B20F is the primary part number with higher inventory availability (10,573 pieces in stock), making it the preferred selection for standard procurement.

BZX84W-B20X is a direct parametric equivalent with lower inventory levels (1,082 pieces in stock) and serves as an alternative when primary part availability is constrained.

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current regulatory requirements. The SOT-323 package and surface mount configuration are identical, requiring no PCB layout modifications for substitution. Operating temperature specifications (150°C TJ) and all electrical parameters are equivalent, confirming functional interchangeability in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can BZX84W-B20X be used as a direct replacement for BZX84W-B20F?

A: Yes. Both parts are parametric equivalents with identical Zener voltage (20 V), power rating (275 mW), tolerance (±2%), impedance (55 Ohms), and all other electrical specifications. The SOT-323 package and surface mount configuration are identical, requiring no design modifications.

Q: Are there any differences in package handling or moisture sensitivity between these parts?

A: No. Both parts share MSL 1 (Unlimited) moisture sensitivity rating, indicating no special moisture control requirements during storage or assembly. Tape & Reel packaging is standard for both parts and does not affect functional performance.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by exact equivalence in nominal Zener voltage (20 V), tolerance (±2%), maximum power dissipation (275 mW), impedance (55 Ohms), reverse leakage current (50 nA @ 14 V), forward voltage (900 mV @ 10 mA), operating temperature (150°C), and package type (SOT-323 surface mount). All parameters must match exactly.

Q: Do these parts have different compliance certifications?

A: No. Both BZX84W-B20F and BZX84W-B20X are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements for industrial and commercial applications.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. Identical SOT-323 package dimensions and surface mount configuration allow direct substitution without PCB layout changes or rework procedures.

Q: What is the difference between the part numbers BZX84W-B20F and BZX84W-B20X?

A: The part numbers differ only in the final suffix character (F versus X). Both parts are from the same BZX84W series and share identical electrical specifications, performance characteristics, and regulatory compliance. The suffix variation reflects internal Nexperia manufacturing or packaging designation but does not affect functional equivalence.