BZX84W-C75F Equivalent & Substitute Parts

Part Overview

The BZX84W-C75F 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 75 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 to provide alternative sourcing options when the primary part number is unavailable or when specific tolerance requirements necessitate component selection from the same product family.

Substiute Parts

BZX84W-C75F

Nexperia USA Inc.In Stock: 1091BZX84W-C75F Datasheet

Current PartRFQ

BZX84W-B75X

Nexperia USA Inc.In Stock: 3868BZX84W-B75X Datasheet

Parametric EquivalentRFQ

BZX84W-C75X

Nexperia USA Inc.In Stock: 3895BZX84W-C75X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BZX84W-C75F is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Nominal Zener voltage: 75 V
• Maximum power dissipation: 275 mW
• Package type: SOT-323 (SC-70)
• Mounting configuration: Surface Mount
• Impedance (Max): 255 Ohms
• Reverse leakage current: 50 nA @ 52.2 V
• Forward voltage: 900 mV @ 10 mA
• Operating temperature range: 150°C (TJ)

Tolerance Variation: Substitute parts within the BZX84W series may differ in voltage tolerance specification. The BZX84W-C75F carries ±5% tolerance, while the BZX84W-B75X variant offers ±2% tolerance. Both variants maintain identical electrical performance across all other parameters and are interchangeable from a functional standpoint. The tolerance difference reflects manufacturing precision classification rather than operational capability.

Compliance Requirements: All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical regulatory classifications (ECCN: EAR99, HTSUS: 8541.10.0050), ensuring compatibility with standard procurement and manufacturing workflows.

Parameter Comparison

Engineering Selection Recommendations

All three parts—BZX84W-C75F, BZX84W-B75X, and BZX84W-C75X—are active products from Nexperia USA Inc. with identical regulatory compliance profiles. Selection between these variants is based on tolerance requirements and application-specific voltage regulation precision needs.

BZX84W-C75F (±5% Tolerance): Suitable for general-purpose voltage regulation and protection applications where standard tolerance specifications are acceptable. This variant provides cost-effective sourcing with standard manufacturing precision.

BZX84W-B75X (±2% Tolerance): Appropriate for applications requiring tighter voltage regulation accuracy. The reduced tolerance band ensures more precise Zener voltage performance across the specified operating range. This variant is selected when circuit design specifications mandate enhanced voltage stability.

BZX84W-C75X (±5% Tolerance): Functionally equivalent to BZX84W-C75F with identical electrical and mechanical specifications. This part number variant serves as an alternative sourcing option within the same tolerance classification.

All three parts maintain ROHS3 compliance, unlimited moisture sensitivity rating, and identical electrical performance across power dissipation, impedance, leakage current, and forward voltage characteristics. Component selection is determined by tolerance requirements and inventory availability rather than functional capability differences.

Frequently Asked Questions (FAQ)

Q: Can BZX84W-B75X replace BZX84W-C75F in existing designs?

A: Yes. The BZX84W-B75X is functionally equivalent to BZX84W-C75F across all electrical parameters. The primary difference is voltage tolerance: BZX84W-B75X offers ±2% tolerance compared to ±5% for BZX84W-C75F. This makes BZX84W-B75X suitable for applications requiring tighter voltage regulation. Both parts share identical package type (SOT-323), power rating (275 mW), and operating temperature range (150°C).

Q: What is the difference between BZX84W-C75F and BZX84W-C75X?

A: These parts are functionally identical. Both carry ±5% voltage tolerance, 75 V nominal Zener voltage, 275 mW maximum power dissipation, and SOT-323 packaging. The part number suffix difference reflects packaging or supplier designation variants rather than electrical or mechanical differences. Both are interchangeable for component selection purposes.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts—BZX84W-C75F, BZX84W-B75X, and BZX84W-C75X—use the SC-70 SOT-323 package with identical surface mount footprint dimensions. No PCB layout modifications are required when substituting between these variants.

Q: Which part should be selected for precision voltage regulation applications?

A: BZX84W-B75X is the appropriate selection for applications requiring enhanced voltage regulation precision. The ±2% tolerance specification provides tighter Zener voltage accuracy compared to the ±5% tolerance of BZX84W-C75F and BZX84W-C75X. This reduced tolerance band ensures more stable voltage performance across operating conditions.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All three parts are ROHS3 compliant, carry MSL 1 (unlimited) moisture sensitivity rating, and share identical REACH and ECCN classifications (EAR99). They are fully compatible with standard manufacturing and procurement workflows.

Q: What is the maximum power dissipation for all variants?

A: All three parts are rated for 275 mW maximum power dissipation. Thermal management and circuit design considerations remain identical across all variants.