BZX84W-C68F Equivalent & Substitute Parts

Part Overview

The BZX84W-C68F 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 68 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. Equivalent and substitute parts are identified to provide design flexibility, inventory alternatives, and continuity of supply for applications requiring identical electrical and mechanical performance.

Substiute Parts

BZX84W-C68F

Nexperia USA Inc.In Stock: 1190BZX84W-C68F Datasheet

Current PartRFQ

BZX84W-B68F

Nexperia USA Inc.In Stock: 796BZX84W-B68F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BZX84W-C68F are identified based on strict electrical and mechanical parameter matching within the BZX84W series. The substitution criteria are:

Critical Parameters for Substitution:

• Nominal Zener voltage: 68 V (exact match required)
• Maximum power dissipation: 275 mW (exact match required)
• Package type: SOT-323 (exact match required)
• Mounting type: Surface Mount (exact match required)
• Reverse leakage current: 50 nA @ 47.6 V (exact match required)
• Forward voltage: 900 mV @ 10 mA (exact match required)
• Operating temperature: 150°C (exact match required)

Allowable Variation:

• Tolerance specification: Zener voltage tolerance may vary (±5%, ±2%, or other tolerance grades) without affecting functional substitution, provided the nominal voltage and all other electrical parameters remain identical.

The BZX84W-C68F (±5% tolerance) is substitutable with the BZX84W-B68F (±2% tolerance) because both parts share identical electrical performance characteristics and physical packaging, with the substitute offering tighter tolerance specification.

Parameter Comparison

Engineering Selection Recommendations

Both the BZX84W-C68F and BZX84W-B68F are active products from Nexperia USA Inc. with full ROHS3 compliance and REACH unaffected status. Selection between these parts is determined by tolerance requirements:

BZX84W-C68F (±5% Tolerance): Use this part for applications where standard tolerance Zener voltage specification is acceptable. This part offers standard inventory availability with 1086 units in stock.

BZX84W-B68F (±2% Tolerance): Use this part for applications requiring tighter Zener voltage tolerance control. This part provides improved voltage regulation accuracy with 692 units in stock.

Both parts are electrically and mechanically interchangeable in SOT-323 surface mount applications. Selection should be based on circuit tolerance requirements and inventory availability. No additional testing or verification is required for substitution between these parts, as all critical electrical parameters and physical packaging are identical.

Frequently Asked Questions (FAQ)

Q: Can BZX84W-B68F replace BZX84W-C68F in my circuit?

A: Yes. The BZX84W-B68F is a direct substitute for the BZX84W-C68F. Both parts have identical nominal Zener voltage (68 V), maximum power dissipation (275 mW), impedance (240 Ohms), reverse leakage current, forward voltage, and operating temperature. The BZX84W-B68F offers tighter tolerance (±2% versus ±5%), making it suitable for applications requiring improved voltage regulation accuracy.

Q: Are there any package or mounting differences between these parts?

A: No. Both the BZX84W-C68F and BZX84W-B68F use identical SOT-323 (SC-70) surface mount packaging. They are mechanically interchangeable and require no changes to PCB layout, footprint, or assembly processes.

Q: What is the difference between ±5% and ±2% tolerance?

A: Tolerance specifies the allowable deviation of the nominal Zener voltage from the specified 68 V value. The BZX84W-C68F (±5%) allows deviation between 64.6 V and 71.4 V. The BZX84W-B68F (±2%) allows deviation between 66.64 V and 69.36 V. Tighter tolerance provides more precise voltage regulation for sensitive applications.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the BZX84W-C68F and BZX84W-B68F are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.

Q: What is the moisture sensitivity level for these parts?

A: Both parts carry MSL 1 (Unlimited) rating, indicating they have unlimited shelf life and require no special moisture control during storage or handling under standard manufacturing conditions.

Q: Can I use these parts interchangeably in production?

A: Yes, provided your circuit design accommodates the tolerance specification of the substitute part. If your application requires the tighter tolerance of the BZX84W-B68F, it is a direct upgrade. If your application is designed for ±5% tolerance, either part is suitable.