BFS17A,215 Equivalent & Substitute Parts

Part Overview

The BFS17A,215 is an RF transistor NPN manufactured by NXP USA Inc., designed for RF applications operating at 2.8GHz with a maximum power dissipation of 300mW. The device is packaged in SOT-23 (TO-236AB) surface mount configuration and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts are necessary for ongoing design support, production continuity, and system maintenance. Substitute parts listed below maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	-
Voltage - Collector Emitter Breakdown (Max)	15V	V
Frequency - Transition	2.8GHz	GHz
Power - Max	300mW	mW
Current - Collector (Ic) (Max)	25mA	mA
DC Current Gain (hFE) (Min) @ Ic, Vce	25 @ 2mA, 1V	-
Noise Figure (dB Typ @ f)	2.5dB @ 800MHz	dB
Operating Temperature (Max)	150°C	°C
Mounting Type	Surface Mount	-
Package / Case	TO-236-3, SC-59, SOT-23-3	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the BFS17A,215 is determined by the following critical parameters:

Primary Compatibility Criteria:

Transistor Type: NPN (mandatory)
Voltage - Collector Emitter Breakdown (Max): 15V or higher
Frequency - Transition: 2.8GHz or higher
Power - Max: 300mW or higher
Current - Collector (Ic) (Max): 25mA or higher
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Package Compatibility: Substitute parts are grouped into two categories based on package type:

Group 1: SOT-23 Package Compatibility (Direct Package Match) Parts maintaining TO-236-3, SC-59, SOT-23-3 package configuration allow direct PCB layout compatibility without redesign.

Group 2: Alternative Package Configurations Parts with different package types (SOT-343, EMT3, TSFP-3) require PCB layout modification but maintain electrical parameter compatibility within specified ranges.

Substitution logic is based strictly on electrical parameter ranges and compliance certifications. All substitute parts listed meet or exceed the minimum electrical requirements of the BFS17A,215 while maintaining NPN transistor type and surface mount configuration.

Parameter Comparison

Parameter	BFS17A,215	BFR35APE6327HTSA1	BFR92PE6327HTSA1	BFU520AR	2SC4726TLP	BFP740ESDH6327XTSA1	BFR360FH6765XTSA1	BFS 17P E8211
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	15V	15V	15V	12V	11V	4.7V	9V	15V
Frequency - Transition	2.8GHz	5GHz	5GHz	10GHz	3.2GHz	45GHz	14GHz	1.4GHz
Power - Max	300mW	280mW	280mW	450mW	150mW	160mW	210mW	280mW
Current - Collector (Ic) (Max)	25mA	45mA	45mA	30mA	50mA	45mA	35mA	25mA
DC Current Gain (hFE) (Min) @ Ic, Vce	25 @ 2mA, 1V	70 @ 15mA, 8V	70 @ 15mA, 8V	60 @ 5mA, 8V	56 @ 5mA, 10V	160 @ 25mA, 3V	90 @ 15mA, 3V	40 @ 2mA, 1V
Noise Figure (dB Typ @ f)	2.5dB @ 800MHz	1.4dB ~ 2dB @ 900MHz ~ 1.8GHz	1.4dB ~ 2dB @ 900MHz ~ 1.8GHz	0.7dB @ 900MHz	3.5dB @ 500MHz	0.55dB ~ 1.8dB @ 150MHz ~ 10GHz	1dB @ 1.8GHz	3.5dB @ 800MHz
Operating Temperature (Max)	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
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	SC-75, SOT-416	SC-82A, SOT-343	SOT-723	TO-236-3, SC-59, SOT-23-3
RoHS Status	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

Engineering Selection Recommendations

Direct Package Substitutes (SOT-23 Configuration):

BFR92PE6327HTSA1 and BFR35APE6327HTSA1 are functionally equivalent substitutes for the BFS17A,215. Both parts maintain the SOT-23-3 package configuration, 15V collector-emitter breakdown voltage, and surface mount mounting type. Both are ROHS3 compliant and active products. BFR92PE6327HTSA1 offers superior inventory availability (305,200 pcs) compared to BFR35APE6327HTSA1 (3,706 pcs). Both parts exceed the frequency requirement (5GHz vs. 2.8GHz) and current rating (45mA vs. 25mA).

BFS 17P E8211 maintains identical package configuration and voltage rating. This part is also ROHS3 compliant and active. However, the transition frequency is lower (1.4GHz vs. 2.8GHz), making it suitable only for applications operating below 1.4GHz.

Alternative Package Substitutes:

BFU520AR is an active, ROHS3 compliant part with automotive qualification (AEC-Q101). It provides higher frequency capability (10GHz), increased power rating (450mW), and improved noise figure (0.7dB @ 900MHz). The package differs (SOT-23 maintained but different supplier configuration), and the voltage rating is lower (12V vs. 15V). This part is suitable for applications where 12V operation is acceptable and higher frequency performance is required.

2SC4726TLP is an active, ROHS3 compliant part from Rohm Semiconductor. It provides frequency capability of 3.2GHz and higher current rating (50mA). The package differs (EMT3 vs. SOT-23), requiring PCB layout modification. The power rating is lower (150mW vs. 300mW), limiting its use to lower power applications.

BFP740ESDH6327XTSA1 is an active, ROHS3 compliant part with extremely high frequency capability (45GHz). The voltage rating is significantly lower (4.7V vs. 15V), and the package differs (SOT-343 vs. SOT-23). This part is suitable only for low-voltage, high-frequency applications.

BFR360FH6765XTSA1 is an active, ROHS3 compliant part with high frequency capability (14GHz) and improved noise figure (1dB @ 1.8GHz). The voltage rating is lower (9V vs. 15V), and the package differs (SOT-723 vs. SOT-23). This part is suitable for applications operating at 9V or lower with higher frequency requirements.

Selection Criteria Summary:

For direct replacement without PCB modification: Select BFR92PE6327HTSA1 or BFR35APE6327HTSA1.

For applications requiring voltage operation below 15V: Evaluate BFU520AR (12V), BFR360FH6765XTSA1 (9V), or BFP740ESDH6327XTSA1 (4.7V) based on specific voltage and frequency requirements.

For applications with lower frequency requirements: BFS 17P E8211 is suitable for operation below 1.4GHz.

All substitute parts are ROHS3 compliant and maintain NPN transistor type and surface mount configuration.

Frequently Asked Questions (FAQ)

Q: Can BFR92PE6327HTSA1 be used as a direct replacement for BFS17A,215?

A: Yes. BFR92PE6327HTSA1 maintains the same SOT-23-3 package configuration, 15V collector-emitter breakdown voltage, and surface mount mounting type. It exceeds the frequency requirement (5GHz vs. 2.8GHz) and current rating (45mA vs. 25mA). No PCB layout modification is required.

Q: What is the difference between BFR92PE6327HTSA1 and BFR35APE6327HTSA1?

A: Both parts are electrically equivalent with identical voltage (15V), frequency (5GHz), power (280mW), and current (45mA) ratings. Both maintain SOT-23-3 package configuration. The primary difference is inventory availability: BFR92PE6327HTSA1 has 305,200 pcs in stock, while BFR35APE6327HTSA1 has 3,706 pcs.

Q: Why is BFU520AR listed as a substitute if the voltage rating is lower (12V vs. 15V)?

A: BFU520AR is listed as a substitute for applications where 12V operation is acceptable. It provides superior frequency capability (10GHz), higher power rating (450mW), improved noise figure (0.7dB @ 900MHz), and automotive qualification (AEC-Q101). Selection depends on specific application voltage requirements.

Q: Can BFP740ESDH6327XTSA1 replace BFS17A,215?

A: BFP740ESDH6327XTSA1 is not suitable as a direct replacement. The voltage rating is significantly lower (4.7V vs. 15V), and the package differs (SOT-343 vs. SOT-23). This part is designed for low-voltage, high-frequency applications (45GHz) and requires PCB layout modification.

Q: What package modifications are required for 2SC4726TLP substitution?

A: 2SC4726TLP uses EMT3 package (SC-75, SOT-416) instead of SOT-23. PCB layout modification is required, including different pad configuration and spacing. Additionally, the power rating is lower (150mW vs. 300mW), limiting use to lower power applications.

Q: Is BFS 17P E8211 a suitable substitute for all applications?

A: BFS 17P E8211 is suitable only for applications operating below 1.4GHz. The transition frequency is lower than the original BFS17A,215 (1.4GHz vs. 2.8GHz). It maintains identical package configuration (SOT-23-3) and voltage rating (15V), allowing direct PCB replacement for low-frequency applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the compliance status of the original BFS17A,215.

Q: What is the primary reason for substitution?

A: The BFS17A,215 is classified as obsolete. Substitute parts are active products with ongoing manufacturing support and inventory availability, ensuring production continuity and long-term design support.

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