BZX84W-B51F Equivalent & Substitute Parts

Part Overview

The BZX84W-B51F is an active Zener diode manufactured by Nexperia USA Inc., designed for voltage regulation and protection applications. This surface mount component operates at a nominal Zener voltage of 51 V with a maximum power dissipation of 275 mW in the SOT-323 package. The part is ROHS3 compliant and carries 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-B51F

Nexperia USA Inc.In Stock: 1070BZX84W-B51F Datasheet

Current PartRFQ

BZX84W-B51X

Nexperia USA Inc.In Stock: 707BZX84W-B51X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BZX84W-B51F are identified based on strict electrical and mechanical parameter matching within the BZX84W series. The substitution criteria are:

Electrical Parameters (Must Match):

• Nominal Zener voltage: 51 V
• Tolerance: ±2%
• Maximum power dissipation: 275 mW
• Impedance (Max): 180 Ohms
• Reverse leakage current: 50 nA @ 35.7 V
• Forward voltage: 900 mV @ 10 mA
• Operating temperature: 150°C (TJ)

Mechanical Parameters (Must Match):

• Package type: SOT-323 (SC-70)
• Mounting type: Surface Mount
• Packaging format: Tape & Reel (TR)

Compliance & Status (Must Match):

• Product Status: Active
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

Parts meeting all these criteria are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The BZX84W-B51X is a direct parametric equivalent to the BZX84W-B51F. Both parts are manufactured by Nexperia USA Inc. and share identical electrical specifications, mechanical packaging, and compliance certifications. Selection between these parts is based on availability and supply chain requirements rather than technical performance differences.

Both parts maintain Active product status, ensuring long-term support and continued manufacturing availability. ROHS3 compliance and REACH unaffected status confirm suitability for regulated markets and applications requiring environmental compliance documentation.

The SOT-323 surface mount package and unlimited moisture sensitivity rating (MSL 1) allow both parts to be processed using standard pick-and-place assembly methods without special handling or baking requirements.

Frequently Asked Questions (FAQ)

Q: Can BZX84W-B51X be used as a direct replacement for BZX84W-B51F?

A: Yes. Both parts are parametric equivalents with identical Zener voltage (51 V), power rating (275 mW), tolerance (±2%), impedance (180 Ohms), and all other electrical specifications. They share the same SOT-323 package and surface mount configuration.

Q: Are there any differences in manufacturing or compliance between these parts?

A: No. Both parts are manufactured by Nexperia USA Inc., carry ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity ratings (MSL 1). Product status is Active for both.

Q: What determines whether a part can substitute for BZX84W-B51F?

A: Substitution requires matching all electrical parameters (Zener voltage, tolerance, power dissipation, impedance, leakage current, forward voltage, operating temperature), mechanical specifications (SOT-323 package, surface mount type), and compliance certifications (ROHS3, REACH status, MSL rating).

Q: Are these parts interchangeable at the PCB assembly level?

A: Yes. Both parts use identical SOT-323 package dimensions and surface mount footprints, allowing direct substitution without PCB redesign or assembly process modification.

Q: What is the difference between the part number suffixes "F" and "X"?

A: The suffixes indicate different packaging or tape reel configurations within the same electrical specification. Both parts deliver identical electrical performance and are functionally equivalent in circuit applications.