BZX84W-C4V7F Equivalent & Substitute Parts

Part Overview

The BZX84W-C4V7F 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 4.7 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 maintained across the BZX84W series, allowing for design flexibility, inventory optimization, and supply chain continuity.

Substiute Parts

BZX84W-C4V7F

Nexperia USA Inc.In Stock: 5632BZX84W-C4V7F Datasheet

Current PartRFQ

BZX84W-B4V7F

Nexperia USA Inc.In Stock: 18985BZX84W-B4V7F Datasheet

Parametric EquivalentRFQ

BZX84W-C4V7X

Nexperia USA Inc.In Stock: 3867BZX84W-C4V7X Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts within the BZX84W series are qualified based on the following critical parameters:

Electrical Equivalence Criteria:

• Nominal Zener voltage: 4.7 V (fixed across all substitutes)
• Maximum power dissipation: 275 mW (fixed across all substitutes)
• Maximum impedance: 80 Ohms (fixed across all substitutes)
• Reverse leakage current: 3 µA @ 2 V (fixed across all substitutes)
• Forward voltage: 900 mV @ 10 mA (fixed across all substitutes)
• Operating temperature range: 150°C junction temperature (fixed across all substitutes)

Mechanical Compatibility Criteria:

• Package type: SC-70, SOT-323 (fixed across all substitutes)
• Mounting type: Surface Mount (fixed across all substitutes)
• Supplier device package: SOT-323 (fixed across all substitutes)

Compliance Criteria:

• RoHS3 compliance (maintained across all substitutes)
• Moisture sensitivity level: MSL 1 (Unlimited) (maintained across all substitutes)
• REACH status: REACH Unaffected (maintained across all substitutes)

The primary differentiator among substitutes is the voltage tolerance specification, which varies between ±2% and ±5%. This tolerance variation does not affect functional substitutability in applications where the nominal 4.7 V Zener voltage is the design requirement.

Parameter Comparison

Engineering Selection Recommendations

All three parts—BZX84W-C4V7F, BZX84W-B4V7F, and BZX84W-C4V7X—are active products from Nexperia USA Inc. with identical electrical performance specifications and mechanical compatibility. Selection among these parts is based on the following factors:

Voltage Tolerance Consideration: BZX84W-B4V7F offers ±2% tolerance, providing tighter voltage regulation compared to the ±5% tolerance of BZX84W-C4V7F and BZX84W-C4V7X. Applications requiring stricter voltage accuracy should specify BZX84W-B4V7F.

Compliance and Certification: All three parts maintain ROHS3 compliance, MSL 1 rating, and REACH Unaffected status, ensuring compatibility with standard manufacturing processes and regulatory requirements.

Inventory and Availability: BZX84W-B4V7F maintains the highest inventory level (18,933 pcs), followed by BZX84W-C4V7F (5,563 pcs) and BZX84W-C4V7X (3,758 pcs). Supply chain considerations may influence part selection based on project timelines and volume requirements.

Package and Mounting: All parts utilize identical SOT-323 surface mount packaging, ensuring direct mechanical and electrical interchangeability on printed circuit boards without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can BZX84W-B4V7F be used as a direct replacement for BZX84W-C4V7F?

A: Yes. Both parts share identical electrical specifications (4.7 V nominal, 275 mW maximum power, 80 Ohms impedance) and mechanical compatibility (SOT-323 package, surface mount). The primary difference is voltage tolerance (±2% versus ±5%), which does not prevent substitution. Applications tolerating ±5% voltage variation can use either part interchangeably.

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

A: Tolerance specifies the acceptable deviation from the nominal 4.7 V Zener voltage. BZX84W-B4V7F (±2%) guarantees operation between 4.606 V and 4.794 V, while BZX84W-C4V7F and BZX84W-C4V7X (±5%) operate between 4.465 V and 4.935 V. Applications requiring precise voltage regulation should specify the ±2% part.

Q: Are all three parts suitable for the same circuit applications?

A: Yes, provided the application tolerates the voltage tolerance range. All three parts deliver identical maximum power dissipation (275 mW), reverse leakage characteristics (3 µA @ 2 V), and forward voltage performance (900 mV @ 10 mA). Circuit design must accommodate the worst-case tolerance of the selected part.

Q: Do these parts require different PCB layouts or soldering profiles?

A: No. All three parts use the SC-70, SOT-323 package with identical pin configurations and thermal characteristics. PCB layouts and reflow soldering profiles remain unchanged across all three parts.

Q: What is the moisture sensitivity level, and does it affect handling?

A: All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard handling procedures apply without special dry-pack requirements or shelf-life limitations.

Q: Are these parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant and REACH Unaffected, meeting environmental and regulatory requirements for commercial and industrial applications.

Q: Which part should be selected for new designs?

A: Selection depends on voltage tolerance requirements. For applications requiring ±5% tolerance, BZX84W-C4V7F or BZX84W-C4V7X are appropriate. For applications requiring ±2% tolerance, BZX84W-B4V7F is specified. Inventory availability may also influence selection for high-volume production.