BZX84W-C5V1F Equivalent & Substitute Parts

Part Overview

The BZX84W-C5V1F is a surface mount Zener diode manufactured by Nexperia USA Inc., rated at 5.1 V nominal with 275 mW maximum power dissipation in an SOT-323 package. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility within specified tolerance ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	5.1	V
Power - Max	275	mW
Impedance (Max)	60	Ohms
Current - Reverse Leakage @ Vr	2	µA @ 2 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	—

Substitute Part Grouping Explanation

Substitution of Zener diodes within the BZX84W series is determined by the following critical parameters:

Electrical Equivalence Criteria:

Nominal Zener voltage (Vz) must be 5.1 V
Maximum power dissipation must be 275 mW
Maximum impedance (Zzt) must not exceed 60 Ohms
Reverse leakage current must not exceed 2 µA @ 2 V
Forward voltage drop must not exceed 900 mV @ 10 mA
Operating temperature rating must support 150°C (TJ)

Mechanical Equivalence Criteria:

Package type must be SC-70 / SOT-323
Mounting type must be Surface Mount
Tape & Reel (TR) packaging format

Compliance Equivalence Criteria:

ROHS3 compliance required
Moisture Sensitivity Level (MSL) of 1 (Unlimited)
REACH Unaffected status

The substitute parts BZX84W-B5V1F and BZX84W-C5V1X meet all electrical, mechanical, and compliance requirements. The primary distinction among these parts is the tolerance specification on the Zener voltage.

Parameter Comparison

Parameter	BZX84W-C5V1F	BZX84W-B5V1F	BZX84W-C5V1X
Voltage - Zener (Nom)	5.1 V	5.1 V	5.1 V
Tolerance	±5%	±2%	±5%
Power - Max	275 mW	275 mW	275 mW
Impedance (Max)	60 Ohms	60 Ohms	60 Ohms
Current - Reverse Leakage @ Vr	2 µA @ 2 V	2 µA @ 2 V	2 µA @ 2 V
Voltage - Forward (Vf) (Max) @ If	900 mV @ 10 mA	900 mV @ 10 mA	900 mV @ 10 mA
Operating Temperature	150°C (TJ)	150°C (TJ)	150°C (TJ)
Package / Case	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three parts—BZX84W-C5V1F, BZX84W-B5V1F, and BZX84W-C5V1X—are Active products manufactured by Nexperia USA Inc. and carry identical ROHS3 compliance and MSL ratings. Selection between these parts is based on tolerance requirements and inventory availability.

BZX84W-C5V1F (±5% tolerance) is the primary reference part with 9027 units in stock.

BZX84W-B5V1F (±2% tolerance) provides tighter voltage tolerance specification with 1415 units available. This part is suitable for applications requiring improved voltage regulation accuracy.

BZX84W-C5V1X (±5% tolerance) matches the tolerance of the primary part with 1080 units in stock and serves as an alternative source.

All parts are suitable for direct substitution within circuits designed for the BZX84W-C5V1F specification, provided the application tolerance requirements are met.

Frequently Asked Questions (FAQ)

Q: Can BZX84W-B5V1F replace BZX84W-C5V1F in any application?

A: Yes. The BZX84W-B5V1F has identical electrical ratings and package specifications. The ±2% tolerance is tighter than the ±5% tolerance of BZX84W-C5V1F, making it suitable for all applications designed for the primary part.

Q: What is the difference between BZX84W-C5V1F and BZX84W-C5V1X?

A: Both parts have identical electrical specifications and ±5% tolerance. The difference is in the packaging designation suffix (F versus X). Both are Surface Mount SOT-323 packages in Tape & Reel format and are directly interchangeable.

Q: Are all three parts in the same package?

A: Yes. All three parts use the SC-70 / SOT-323 surface mount package in Tape & Reel (TR) format, ensuring mechanical compatibility in PCB assembly.

Q: Do these parts have different compliance certifications?

A: No. All three parts carry identical ROHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) ratings.

Q: Which part should be selected for voltage regulation applications requiring high accuracy?

A: The BZX84W-B5V1F with ±2% tolerance provides superior voltage accuracy compared to the ±5% tolerance parts and is recommended for precision voltage reference applications.

Q: Are there inventory considerations when selecting a substitute?

A: Yes. BZX84W-C5V1F has the highest inventory (9027 units), followed by BZX84W-B5V1F (1415 units) and BZX84W-C5V1X (1080 units). Selection may depend on delivery requirements and supply chain availability.

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