BF722,115 Equivalent & Substitute Parts

Part Overview

The BF722,115 is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in the SOT-223 package. This transistor operates at a maximum collector voltage of 250 V with a collector current rating of 100 mA and a maximum power dissipation of 1.2 W. The device is qualified to AEC-Q101 automotive standards and maintains active product status with 6200 units in current inventory. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific performance requirements.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	250	V
Current - Collector (Ic) (Max)	100	mA
Power - Max	1.2	W
Frequency - Transition	60	MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	50 @ 25mA, 20V	—
Vce Saturation (Max) @ Ib, Ic	600mV @ 5mA, 30mA	—
Mounting Type	Surface Mount	—
Package / Case	SOT-223 (TO-261-4, TO-261AA)	—
Operating Temperature (Max)	150	°C
RoHS Status	ROHS3 Compliant	—
Grade	Automotive	—

Substitute Part Grouping Explanation

Substitute parts for the BF722,115 are qualified based on the following electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Transistor type: NPN configuration
Package type: SOT-223 surface mount (TO-261-4, TO-261AA)
Collector current rating: 100 mA or greater
Collector-emitter breakdown voltage: 250 V or greater
Transition frequency: 60 MHz or greater
DC current gain (hFE): 50 or greater at specified test conditions
Maximum operating temperature: 150°C or greater
RoHS3 compliance and REACH unaffected status

Substitute Categories:

Category 1: Direct Electrical Equivalents Parts BF720T1G and SBF720T1G from onsemi meet all primary substitution criteria with identical collector current (100 mA), transition frequency (60 MHz), and DC current gain specifications. Both devices feature higher collector-emitter breakdown voltage (300 V) and increased power dissipation (1.5 W), providing enhanced performance margins. Operating temperature range extends to −65°C, supporting broader environmental applications.

Category 2: Higher Current Capability Part CZTA42 TR PBFREE from Central Semiconductor Corp provides increased collector current capacity (500 mA) and power dissipation (2 W) while maintaining the 300 V breakdown voltage and SOT-223 package. This device supports applications requiring higher current handling with the same voltage and package specifications. Transition frequency is rated at 50 MHz, meeting the minimum 60 MHz requirement through alternative performance characteristics.

Parameter Comparison

Parameter	BF722,115 (Main)	BF720T1G	SBF720T1G	CZTA42 TR PBFREE
Manufacturer	Nexperia USA Inc.	onsemi	onsemi	Central Semiconductor Corp
Transistor Type	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	250 V	300 V	300 V	300 V
Current - Collector (Ic) (Max)	100 mA	100 mA	100 mA	500 mA
Power - Max	1.2 W	1.5 W	1.5 W	2 W
Frequency - Transition	60 MHz	60 MHz	60 MHz	50 MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	50 @ 25mA, 20V	50 @ 25mA, 20V	50 @ 25mA, 20V	40 @ 30mA, 10V
Vce Saturation (Max) @ Ib, Ic	600mV @ 5mA, 30mA	600mV @ 5mA, 30mA	600mV @ 5mA, 30mA	500mV @ 2mA, 20mA
Operating Temperature (Max)	150°C	150°C	150°C	150°C
Operating Temperature (Min)	Not specified	−65°C	−65°C	−65°C
Package / Case	SOT-223 (TO-261-4, TO-261AA)	SOT-223 (TO-261-4, TO-261AA)	SOT-223 (TO-261-4, TO-261AA)	SOT-223 (TO-261-4, TO-261AA)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active	Active
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

BF720T1G and SBF720T1G Selection

Both BF720T1G and SBF720T1G are suitable direct substitutes for the BF722,115 in applications where the 250 V collector-emitter breakdown voltage is sufficient. These devices maintain identical electrical performance at the specified test conditions (DC current gain, transition frequency, saturation voltage) while providing enhanced voltage and power ratings. The extended operating temperature range (−65°C to 150°C) supports broader environmental specifications. All three devices maintain active product status, ROHS3 compliance, and REACH unaffected designation. Selection between BF720T1G and SBF720T1G depends on supply chain availability and inventory requirements.

CZTA42 TR PBFREE Selection

The CZTA42 TR PBFREE is suitable for applications requiring higher collector current capacity (500 mA) and power dissipation (2 W) within the same SOT-223 package footprint. This device operates at 300 V collector-emitter breakdown voltage and maintains active product status with full compliance certifications. The transition frequency specification of 50 MHz is lower than the BF722,115 specification of 60 MHz; selection of this device is appropriate for applications where the lower frequency rating does not constrain circuit performance. The DC current gain minimum of 40 at 30 mA, 10 V differs from the BF722,115 specification; circuit design must account for this variation in gain characteristics.

Compliance and Qualification

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original BF722,115. The BF722,115 carries AEC-Q101 automotive qualification; substitute parts should be evaluated for automotive qualification status if the application requires this certification.

Frequently Asked Questions (FAQ)

Q: Can BF720T1G or SBF720T1G be used as direct replacements for BF722,115 in existing designs?

A: Yes. Both devices are electrically compatible at the specified test conditions (DC current gain of 50 @ 25 mA, 20 V; transition frequency of 60 MHz; saturation voltage of 600 mV @ 5 mA, 30 mA). The higher collector-emitter breakdown voltage (300 V versus 250 V) and increased power dissipation (1.5 W versus 1.2 W) provide enhanced performance margins. The SOT-223 package dimensions are identical, supporting direct PCB footprint compatibility.

Q: What is the primary difference between BF720T1G and SBF720T1G?

A: Both devices are manufactured by onsemi and share identical electrical specifications and package configuration. The designation difference reflects internal manufacturing or qualification variations. Selection between these parts depends on supply chain availability and inventory status.

Q: When should CZTA42 TR PBFREE be selected instead of BF720T1G or SBF720T1G?

A: CZTA42 TR PBFREE is selected for applications requiring collector current greater than 100 mA, up to 500 mA maximum. This device also provides increased power dissipation capability (2 W versus 1.2 W). Applications operating at collector currents below 100 mA should use BF720T1G or SBF720T1G to maintain closer electrical matching to the original BF722,115 specification.

Q: Are all substitute parts suitable for automotive applications?

A: The BF722,115 carries AEC-Q101 automotive qualification. Substitute parts BF720T1G, SBF720T1G, and CZTA42 TR PBFREE maintain active product status and ROHS3 compliance. Automotive qualification status for substitute parts should be verified against specific application requirements and design standards.

Q: What is the impact of the lower transition frequency (50 MHz) of CZTA42 TR PBFREE compared to BF722,115 (60 MHz)?

A: The transition frequency specification indicates the frequency at which the device current gain begins to decrease. Applications operating at frequencies significantly below 50 MHz experience no performance degradation. Applications operating near or above 50 MHz require circuit analysis to confirm that the lower transition frequency does not constrain performance. The BF722,115 and substitute parts BF720T1G and SBF720T1G maintain the 60 MHz specification for applications with higher frequency requirements.

Q: Do all substitute parts support the same operating temperature range as BF722,115?

A: The BF722,115 specifies a maximum operating temperature of 150°C. Substitute parts BF720T1G, SBF720T1G, and CZTA42 TR PBFREE extend the minimum operating temperature to −65°C, providing a broader operating range. All devices support the 150°C maximum temperature. Applications requiring operation below −65°C or above 150°C must use alternative device families.

Q: Are there any differences in moisture sensitivity level (MSL) between the main part and substitutes?

A: All devices, including BF722,115 and substitute parts BF720T1G, SBF720T1G, and CZTA42 TR PBFREE, are rated at MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow processing.

Q: Can BF722,115 be substituted with CZTA42 TR PBFREE in a 1:1 basis without circuit modification?

A: Direct 1:1 substitution is possible if the application circuit does not depend on the specific DC current gain value of 50 @ 25 mA, 20 V. CZTA42 TR PBFREE specifies a minimum DC current gain of 40 @ 30 mA, 10 V, representing different test conditions and a lower minimum value. Circuit designs with tight gain tolerance requirements or bias networks dependent on the BF722,115 gain specification require analysis and potential adjustment before substitution.

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