BF720-QX Equivalent & Substitute Parts

Part Overview

The BF720-QX is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in automotive-grade circuits. This component operates at a maximum collector voltage of 300 V with a collector current rating of 100 mA and delivers 1.2 W maximum power dissipation. The device is packaged in SOT-223 and qualifies under AEC-Q101 automotive standards. Substitute parts are identified when electrical characteristics, mechanical packaging, and compliance certifications align with the original specification, enabling direct replacement in production and field applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	100	mA
Voltage - Collector Emitter Breakdown (Max)	300	V
Vce Saturation (Max)	600 mV @ 5 mA, 30 mA	—
Current - Collector Cutoff (Max)	10	nA
DC Current Gain (hFE) Min	50 @ 25 mA, 20 V	—
Power - Max	1.2	W
Frequency - Transition	60	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-261-4, TO-261AA	—
Supplier Device Package	SOT-223	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BF720-QX is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Transistor type (NPN)
Maximum collector current (100 mA)
Maximum collector-emitter breakdown voltage (300 V)
Vce saturation characteristics (600 mV @ 5 mA, 30 mA)
Collector cutoff current (10 nA maximum)
DC current gain (hFE minimum 50 @ 25 mA, 20 V)
Maximum power dissipation (1.2 W)
Transition frequency (60 MHz)
Maximum operating junction temperature (150°C)

Mechanical & Compliance Equivalence Criteria:

Surface mount mounting type
SOT-223 package / TO-261-4, TO-261AA case
Automotive grade classification
AEC-Q101 qualification
ROHS3 compliance
MSL rating 1 (Unlimited)

Parts meeting all criteria above are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Parameter	BF720-QX	BF720,115	Match
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	✓
Transistor Type	NPN	NPN	✓
Current - Collector (Ic) Max	100 mA	100 mA	✓
Voltage - Collector Emitter Breakdown (Max)	300 V	300 V	✓
Vce Saturation (Max)	600 mV @ 5 mA, 30 mA	600 mV @ 5 mA, 30 mA	✓
Current - Collector Cutoff (Max)	10 nA	10 nA	✓
DC Current Gain (hFE) Min	50 @ 25 mA, 20 V	50 @ 25 mA, 20 V	✓
Power - Max	1.2 W	1.2 W	✓
Frequency - Transition	60 MHz	60 MHz	✓
Operating Temperature (TJ)	150°C	150°C	✓
Mounting Type	Surface Mount	Surface Mount	✓
Package / Case	TO-261-4, TO-261AA	TO-261-4, TO-261AA	✓
Supplier Device Package	SOT-223	SOT-223	✓
Grade	Automotive	Automotive	✓
Qualification	AEC-Q101	AEC-Q101	✓
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	✓
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	✓
Product Status	Active	Active	✓

Engineering Selection Recommendations

The BF720,115 is a direct parametric equivalent to the BF720-QX. Both components are manufactured by Nexperia USA Inc. and share identical electrical specifications, mechanical packaging, and compliance certifications. Selection between these parts is based on availability and supply chain considerations rather than technical differentiation.

Both parts carry Active product status, AEC-Q101 automotive qualification, and ROHS3 compliance, confirming suitability for automotive-grade applications. The SOT-223 package and TO-261-4/TO-261AA case designations are identical, ensuring mechanical compatibility in PCB layouts and assembly processes.

When the primary part number BF720-QX is unavailable, the BF720,115 variant provides equivalent performance without design modification or re-qualification requirements.

Frequently Asked Questions (FAQ)

Q: Can BF720,115 be used as a direct replacement for BF720-QX?

A: Yes. The BF720,115 is a parametric equivalent with identical electrical ratings, mechanical packaging, and automotive certifications. Direct substitution is supported without circuit redesign.

Q: Are there any differences in the SOT-223 package between these parts?

A: No. Both parts use the same SOT-223 package designation and TO-261-4/TO-261AA case specification, ensuring identical PCB footprint and assembly compatibility.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both BF720-QX and BF720,115 carry AEC-Q101 qualification and Automotive grade classification, confirming compliance with automotive reliability and environmental requirements.

Q: What is the significance of the part number suffix in BF720,115?

A: The BF720,115 designation represents a specific packaging or tape configuration variant of the base BF720 product line. The electrical and mechanical specifications remain identical to BF720-QX.

Q: Are moisture sensitivity levels the same for both parts?

A: Yes. Both parts carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can these parts be used interchangeably in high-frequency applications?

A: Yes. Both parts specify 60 MHz transition frequency and identical DC current gain characteristics, supporting equivalent performance in high-frequency switching and amplification circuits.

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