BZX84W-C27F Equivalent & Substitute Parts

Part Overview

The BZX84W-C27F 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 27 V with a maximum power dissipation of 275 mW in the SOT-323 package. The part is RoHS3 compliant and carries unlimited moisture sensitivity level (MSL 1), making it suitable for standard manufacturing environments. Substitute parts are identified to address inventory availability, tolerance requirements, or specific application constraints while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	27	V
Power - Max	275	mW
Tolerance	±5%	—
Impedance (Max)	80	Ohms
Current - Reverse Leakage @ Vr	50	nA @ 18.9 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-C27F are identified based on strict electrical and mechanical parameter matching within the BZX84W series. All substitute candidates maintain the following critical parameters:

Nominal Zener voltage: 27 V
Maximum power dissipation: 275 mW
Package type: SOT-323 (SC-70)
Mounting configuration: Surface Mount
Reverse leakage current: 50 nA @ 18.9 V
Forward voltage: 900 mV @ 10 mA
Operating temperature: 150°C (TJ)
RoHS3 compliance and MSL 1 rating

Substitution is permitted when tolerance specifications meet or exceed application requirements. The BZX84W-C27F operates at ±5% tolerance. Substitute parts with equal or tighter tolerance specifications are electrically interchangeable for this application category.

Parameter Comparison

Parameter	BZX84W-C27F	BZX84W-B27X	BZX84W-C27X
Voltage - Zener (Nom)	27 V	27 V	27 V
Tolerance	±5%	±2%	±5%
Power - Max	275 mW	275 mW	275 mW
Impedance (Max)	80 Ohms	80 Ohms	80 Ohms
Current - Reverse Leakage @ Vr	50 nA @ 18.9 V	50 nA @ 18.9 V	50 nA @ 18.9 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
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All three parts—BZX84W-C27F, BZX84W-B27X, and BZX84W-C27X—are active products from Nexperia USA Inc. with identical electrical performance specifications and full RoHS3 compliance. Selection between these parts is determined by tolerance requirements and inventory availability.

BZX84W-C27F (±5% tolerance, 1882 units in stock) serves applications where standard tolerance specifications are acceptable.

BZX84W-B27X (±2% tolerance, 2350 units in stock) provides tighter voltage tolerance for precision voltage regulation circuits requiring enhanced accuracy. This part is suitable for direct substitution in applications where the ±5% tolerance of the main part is overly conservative.

BZX84W-C27X (±5% tolerance, 732 units in stock) matches the tolerance specification of the main part and serves as an alternative when primary inventory is depleted.

All three parts share identical mechanical packaging, thermal characteristics, and compliance certifications, ensuring seamless integration into existing PCB designs and manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can BZX84W-B27X replace BZX84W-C27F in my circuit?

A: Yes. The BZX84W-B27X operates at ±2% tolerance, which is tighter than the ±5% tolerance of the BZX84W-C27F. All other electrical parameters, including Zener voltage, power rating, impedance, and leakage current, are identical. The part is mechanically and electrically interchangeable.

Q: What is the difference between BZX84W-C27F and BZX84W-C27X?

A: Both parts share identical electrical specifications and tolerance (±5%). The primary difference is inventory availability. BZX84W-C27F has 1882 units in stock, while BZX84W-C27X has 732 units. Selection between these parts depends on supply chain requirements.

Q: Are all substitute parts in the same package?

A: Yes. All three parts use the SOT-323 package (SC-70), which is a surface mount configuration. No PCB layout modifications are required when substituting between these parts.

Q: Does tolerance affect circuit performance?

A: Tolerance specifications define the acceptable range of Zener voltage at the nominal operating point. The BZX84W-B27X (±2%) provides a narrower voltage range than the BZX84W-C27F (±5%). Applications requiring precise voltage regulation benefit from the tighter tolerance of the BZX84W-B27X.

Q: Are all parts RoHS3 compliant?

A: Yes. All three parts carry ROHS3 compliance certification and are suitable for applications subject to RoHS regulations.

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

A: All three parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling. Standard manufacturing processes apply without special precautions.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message