BFR92AW,115 Equivalent & Substitute Parts

Part Overview

The BFR92AW,115 is an RF transistor NPN manufactured by NXP USA Inc., designed for high-frequency applications up to 5GHz with a maximum power dissipation of 300mW. This device operates at a collector-emitter breakdown voltage of 15V and supports a maximum collector current of 25mA. The part is packaged in SC-70 (SOT-323-3) surface mount configuration with a noise figure of 2dB to 3dB at 1GHz to 2GHz.

The BFR92AW,115 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements. Substitute parts must maintain compatibility within the RF transistor NPN category while meeting the electrical and mechanical requirements of the original application.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	-
Voltage - Collector Emitter Breakdown (Max)	15V	V
Frequency - Transition	5GHz	GHz
Noise Figure (Typ @ f)	2dB ~ 3dB @ 1GHz ~ 2GHz	dB
Power - Max	300mW	mW
DC Current Gain (hFE) (Min) @ Ic, Vce	65 @ 15mA, 10V	-
Current - Collector (Ic) (Max)	25mA	mA
Operating Temperature (TJ)	150°C	°C
Mounting Type	Surface Mount	-
Package / Case	SC-70, SOT-323	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the BFR92AW,115 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN configuration required
Voltage - Collector Emitter Breakdown (Max): Must equal or exceed 15V
Frequency - Transition: Must support 5GHz minimum operation
Power - Max: Must support 300mW minimum dissipation
Current - Collector (Ic) (Max): Must support 25mA minimum
Mounting Type: Surface Mount required
Package compatibility: SC-70 or equivalent footprint

Secondary Compatibility Factors:

Operating Temperature: 150°C maximum junction temperature
RoHS3 Compliance: Required for regulatory alignment
Moisture Sensitivity Level: MSL 1 preferred for handling consistency

Substitute parts are grouped based on their ability to meet or exceed these parameters while maintaining functional equivalence in RF transistor NPN applications. Parts that exceed the original specifications in frequency, power, or current handling remain valid substitutes provided they maintain electrical compatibility and package footprint compatibility.

Parameter Comparison

Parameter	BFR92AW,115	BFU520WX	2SC4713KT146R	2SC5488A-TL-H	BFP181E7764HTSA1	BFP183WH6327XTSA1	BFP420H6801XTSA1	BFP640ESDH6327XTSA1	BFQ790H6327XTSA1	BFR340FH6327XTSA1	HFA3134IHZ96
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN	2 NPN (Dual)
Voltage - Collector Emitter Breakdown (Max)	15V	12V	6V	10V	12V	12V	5V	4.7V	6.1V	9V	9V
Frequency - Transition	5GHz	10GHz	800MHz	7GHz	8GHz	8.5GHz	25GHz	46GHz	1.85GHz	14GHz	8.5GHz
Noise Figure (dB Typ @ f)	2dB ~ 3dB @ 1GHz ~ 2GHz	0.6dB @ 900MHz	-	1dB @ 1GHz	0.9dB ~ 1.2dB @ 900MHz ~ 1.8GHz	0.9dB ~ 1.4dB @ 900MHz ~ 1.8GHz	1.1dB @ 1.8GHz	0.6dB ~ 2dB @ 150MHz ~ 10GHz	2.6dB @ 1.8GHz	0.9dB ~ 1.2dB @ 100MHz ~ 2.4GHz	2.4dB @ 1GHz
Power - Max	300mW	450mW	200mW	100mW	175mW	450mW	160mW	200mW	1.5W	75mW	-
DC Current Gain (hFE) (Min) @ Ic, Vce	65 @ 15mA, 10V	60 @ 5mA, 8V	180 @ 5mA, 5V	90 @ 20mA, 5V	70 @ 70mA, 8V	70 @ 15mA, 8V	60 @ 20mA, 4V	110 @ 30mA, 3V	60 @ 250mA, 5V	90 @ 5mA, 3V	48 @ 10mA, 2V
Current - Collector (Ic) (Max)	25mA	30mA	50mA	70mA	20mA	65mA	35mA	50mA	300mA	20mA	26mA
Operating Temperature (TJ)	150°C	-40°C ~ 150°C	150°C	150°C	150°C	150°C	150°C	150°C	-	150°C	150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-70, SOT-323	SC-70, SOT-323	TO-236-3, SC-59, SOT-23-3	SC-81	TO-253-4, TO-253AA	SC-82A, SOT-343	SC-82A, SOT-343	SC-82A, SOT-343	TO-243AA	SOT-723	SOT-23-6
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Obsolete	Active	Active

Engineering Selection Recommendations

Direct Substitutes (Highest Compatibility):

BFU520WX (NXP USA Inc.) is the primary recommended substitute. This part maintains the SC-70 SOT-323 package footprint identical to the BFR92AW,115, ensuring direct PCB compatibility without layout modifications. The BFU520WX exceeds the original specifications with 10GHz frequency capability versus 5GHz, 450mW power rating versus 300mW, and 30mA maximum collector current versus 25mA. The device is classified as Active with AEC-Q101 automotive qualification and extended operating temperature range (-40°C to 150°C). RoHS3 compliance and MSL 1 rating match the original part requirements.

Secondary Substitutes (Functional Equivalence with Package Considerations):

BFP183WH6327XTSA1 (Infineon Technologies) provides superior RF performance with 8.5GHz frequency and 450mW power dissipation. This part requires package footprint change from SC-70 to SC-82A SOT-343, necessitating PCB layout modification. The device is Active status with RoHS3 compliance.

BFP181E7764HTSA1 (Infineon Technologies) operates at 8GHz with 175mW power and requires package change to TO-253-4 SOT-143-4. Active status with RoHS3 compliance.

BFR340FH6327XTSA1 (Infineon Technologies) supports 14GHz frequency with 75mW power in SOT-723 package. Requires significant PCB layout modification. Active status with RoHS3 compliance.

Limited Substitutes (Voltage or Power Constraints):

2SC4713KT146R (Rohm Semiconductor) operates at only 800MHz and 6V maximum voltage, below the original 5GHz and 15V specifications. Not recommended for direct substitution in applications requiring full 5GHz performance.

BFP420H6801XTSA1 (Infineon Technologies) operates at 25GHz but limited to 5V maximum voltage and 160mW power, below original 15V and 300mW ratings.

BFP640ESDH6327XTSA1 (Infineon Technologies) operates at 46GHz but limited to 4.7V maximum voltage, significantly below the original 15V specification.

BFQ790H6327XTSA1 (Infineon Technologies) is classified as Obsolete and not recommended for new designs despite superior 1.5W power rating.

HFA3134IHZ96 (Intersil) is a dual NPN configuration (2 NPN) in SOT-23-6 package, fundamentally different from the single NPN BFR92AW,115. Not suitable for direct substitution.

Compliance and Certification:

All recommended substitute parts maintain RoHS3 compliance and MSL 1 moisture sensitivity rating, ensuring regulatory alignment and handling consistency with the original BFR92AW,115 specification.

Frequently Asked Questions (FAQ)

Q: Can BFU520WX directly replace BFR92AW,115 without PCB modifications?

A: Yes. BFU520WX maintains identical SC-70 SOT-323 package footprint and pin configuration, enabling direct PCB substitution without layout changes. The part exceeds original electrical specifications in frequency (10GHz vs 5GHz), power (450mW vs 300mW), and current handling (30mA vs 25mA).

Q: Why do some substitute parts have lower voltage ratings than the original BFR92AW,115?

A: Parts such as BFP420H6801XTSA1 (5V) and BFP640ESDH6327XTSA1 (4.7V) are designed for lower-voltage RF applications. These parts are not suitable substitutes for the BFR92AW,115 in applications requiring 15V collector-emitter breakdown voltage. Voltage rating is a critical parameter that cannot be compromised.

Q: What is the significance of the SC-70 SOT-323 package specification?

A: The SC-70 SOT-323 package defines the physical footprint, pin spacing, and mounting area on the PCB. Only substitute parts with identical or compatible package designations (SC-70 or SOT-323) can be used without PCB redesign. Parts in different packages (SC-82A, SOT-343, TO-253-4, etc.) require PCB layout modification.

Q: Is HFA3134IHZ96 a suitable substitute?

A: No. HFA3134IHZ96 is a dual NPN configuration (2 NPN) versus the single NPN BFR92AW,115. The dual configuration, different package (SOT-23-6), and different pin arrangement make this part incompatible for direct substitution.

Q: What does "Active" product status mean for substitution purposes?

A: Active status indicates the part is currently manufactured and available from the supplier. Active parts are preferred for new designs and long-term production. The BFR92AW,115 is classified as Obsolete, meaning it is no longer manufactured. Substitution with Active parts ensures long-term component availability.

Q: Can I use a substitute part with higher frequency capability than the original?

A: Yes. Parts with higher frequency capability (such as BFP183WH6327XTSA1 at 8.5GHz versus BFR92AW,115 at 5GHz) are valid substitutes provided all other electrical parameters meet or exceed the original specifications. Higher frequency capability does not compromise functionality in lower-frequency applications.

Q: What is the importance of RoHS3 compliance in substitution?

A: RoHS3 compliance ensures the part meets environmental and regulatory requirements for hazardous substance restrictions. All recommended substitutes maintain RoHS3 compliance, ensuring regulatory alignment with the original BFR92AW,115 specification and compatibility with modern manufacturing and end-use requirements.

Q: Does MSL 1 rating affect substitution decisions?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture baking requirements. All recommended substitutes maintain MSL 1 rating, ensuring consistent handling procedures and storage requirements with the original part.

Q: Why is BFQ790H6327XTSA1 not recommended despite superior power rating?

A: BFQ790H6327XTSA1 is classified as Obsolete, indicating it is no longer manufactured. Substituting an obsolete part for another obsolete part does not resolve component availability issues. Active parts are preferred for new designs and production continuity.

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