BZX84W-C3V3F Equivalent & Substitute Parts

Part Overview

The BZX84W-C3V3F is a Zener diode manufactured by Nexperia USA Inc., rated at 3.3 V nominal with 275 mW maximum power dissipation in a surface mount SOT-323 package. This component is classified as an active product with full RoHS3 compliance and unlimited moisture sensitivity rating. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage applications in electronic circuits. Substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the BZX84W series.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	3.3	V
Power - Max	275	mW
Impedance (Max)	95	Ohms
Current - Reverse Leakage @ Vr	5	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	900	mV @ 10 mA
Operating Temperature	150	°C (TJ)
Package / Case	SC-70, SOT-323
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the BZX84W-C3V3F are identified within the BZX84W series based on the following criteria:

Electrical Compatibility Parameters:

Nominal Zener voltage: 3.3 V (all substitutes match)
Maximum power dissipation: 275 mW (all substitutes match)
Impedance (Max): 95 Ohms (all substitutes match)
Reverse leakage current: 5 µA @ 1 V (all substitutes match)
Forward voltage: 900 mV @ 10 mA (all substitutes match)
Operating temperature: 150°C (TJ) (all substitutes match)

Mechanical Compatibility Parameters:

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

Tolerance Variation: The primary distinction among substitute parts is the Zener voltage tolerance specification. The BZX84W-C3V3F carries ±5% tolerance, while BZX84W-B3V3F and BZX84W-B3V3X carry ±2% tolerance. Both tolerance grades are functionally interchangeable in applications where the nominal 3.3 V specification is required, with the ±2% variants providing tighter voltage regulation.

Compliance & Regulatory: All parts maintain ROHS3 compliance, MSL 1 rating, and REACH unaffected status.

Parameter Comparison

Parameter	BZX84W-C3V3F	BZX84W-B3V3F	BZX84W-B3V3X	BZX84W-C3V3X
Voltage - Zener (Nom)	3.3 V	3.3 V	3.3 V	3.3 V
Tolerance	±5%	±2%	±2%	±5%
Power - Max	275 mW	275 mW	275 mW	275 mW
Impedance (Max)	95 Ohms	95 Ohms	95 Ohms	95 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 1 V	5 µA @ 1 V	5 µA @ 1 V	5 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature	150°C (TJ)	150°C (TJ)	150°C (TJ)	150°C (TJ)
Package / Case	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All substitute parts listed are active products manufactured by Nexperia USA Inc. and maintain identical compliance certifications including ROHS3, REACH unaffected status, and MSL 1 rating. Selection between the BZX84W-C3V3F and its substitutes depends on tolerance requirements:

BZX84W-C3V3F and BZX84W-C3V3X (±5% Tolerance): These variants are suitable for general-purpose voltage regulation and protection applications where standard tolerance specifications are acceptable. Both parts are electrically and mechanically identical, differing only in packaging format (Tape & Reel designation).

BZX84W-B3V3F and BZX84W-B3V3X (±2% Tolerance): These variants provide tighter voltage regulation and are suitable for precision voltage reference applications requiring closer tolerance control. Both parts maintain identical electrical performance to the ±5% variants while offering improved voltage accuracy.

All parts are surface mount components in SOT-323 package format, suitable for automated assembly processes. Inventory availability varies across part numbers, with BZX84W-B3V3F showing the highest stock level at 10,743 pieces.

Frequently Asked Questions (FAQ)

Q: Can BZX84W-B3V3F replace BZX84W-C3V3F in my circuit?

A: Yes. The BZX84W-B3V3F is electrically and mechanically compatible with the BZX84W-C3V3F. The primary difference is the tighter ±2% tolerance specification compared to ±5%. This substitution is direct for all applications where the 3.3 V nominal voltage and 275 mW power rating are required.

Q: What is the difference between the "F" and "X" suffix variants?

A: The "F" and "X" suffixes indicate different packaging formats within the Tape & Reel category. Both variants are functionally identical in electrical performance and mechanical compatibility. The suffix distinction relates to supplier device packaging specifications.

Q: Are all substitute parts in the same package?

A: Yes. All substitute parts use the SC-70, SOT-323 surface mount package. They are mechanically interchangeable and suitable for the same PCB footprints and automated assembly processes.

Q: Which substitute should I select for a precision voltage reference application?

A: For precision applications requiring tighter voltage regulation, select either BZX84W-B3V3F or BZX84W-B3V3X, both offering ±2% tolerance compared to the ±5% tolerance of the original BZX84W-C3V3F.

Q: Are all parts RoHS compliant?

A: Yes. All parts listed are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: Can I use these parts interchangeably in production?

A: Yes, within the constraints of your tolerance requirements. All parts maintain identical electrical characteristics, compliance certifications, and mechanical compatibility. Verify your circuit design tolerance requirements before selecting between ±5% and ±2% variants.

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