BFS17HTC Equivalent & Substitute Parts

Part Overview

The BFS17HTC is an RF transistor NPN manufactured by Diodes Incorporated, rated for 15V collector-emitter breakdown voltage with a transition frequency of 1.3GHz and maximum power dissipation of 330mW. This device is packaged in SOT-23-3 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 provide functional alternatives with comparable or enhanced electrical characteristics suitable for RF applications.

Key Parameters

Parameter	BFS17HTC	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	15V	V
Frequency - Transition	1.3GHz	GHz
Noise Figure (Typ @ f)	4.5dB @ 500MHz	dB
Power - Max	330mW	mW
DC Current Gain (hFE) (Min) @ Ic, Vce	70 @ 2mA, 1V	—
Current - Collector (Ic) (Max)	25mA	mA
Operating Temperature	-55°C ~ 150°C	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Product Status	Obsolete	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the BFS17HTC are grouped based on the following electrical and mechanical parameters that determine functional compatibility:

Primary Substitution Criteria:

Transistor Type: NPN (required match)
Voltage - Collector Emitter Breakdown: Equal to or greater than 15V
Frequency - Transition: Equal to or greater than 1.3GHz
Power - Max: Equal to or greater than 330mW
Current - Collector (Ic) (Max): Equal to or greater than 25mA
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Substitute Categories:

Category 1: Direct Package Compatibility (SOT-23-3) Parts maintaining the same SOT-23-3 package footprint with enhanced or equivalent RF performance characteristics.

Category 2: Alternative Surface Mount Packages Parts with different surface mount packages (SOT-323, SOT-343, TSLP-3) offering improved RF performance at higher frequencies while maintaining surface mount compatibility.

Category 3: Chassis Mount High-Power Alternatives Parts designed for higher power applications with significantly increased current handling and power dissipation capabilities, suitable for applications requiring greater thermal and electrical headroom.

Parameter Comparison

Part Number	Manufacturer	Vce (Max)	Frequency (GHz)	Power (mW)	Ic (Max)	Package	Status
BFS17HTC	Diodes Incorporated	15V	1.3	330	25mA	SOT-23-3	Obsolete
2SC2714-Y(TE85L,F)	Toshiba Semiconductor and Storage	30V	0.55	100	20mA	S-Mini	Active
2SC5226A-5-TL-E	onsemi	10V	7	150	70mA	3-MCP	Active
BFP450H6327XTSA1	Infineon Technologies	5V	24	450	100mA	SOT-343	Active
BFR182WH6327XTSA1	Infineon Technologies	12V	8	250	35mA	SOT-323	Active
BFR35APE6327HTSA1	Infineon Technologies	15V	5	280	45mA	SOT-23-3	Active
BFR740L3RHE6327XTSA1	Infineon Technologies	4.7V	42	160	30mA	SOT-883	Active
BFR92PE6327HTSA1	Infineon Technologies	15V	5	280	45mA	SOT-23-3	Active
MAPR-002729-170M00	MACOM Technology Solutions	65V	—	170000	27A	Chassis Mount	Active
MRF428	MACOM Technology Solutions	55V	—	150000	20A	211-11	Active
PH3135-5S	MACOM Technology Solutions	60V	—	5000	750mA	—	Active

Engineering Selection Recommendations

For Direct Replacement in Existing SOT-23-3 Footprints:

BFR35APE6327HTSA1 and BFR92PE6327HTSA1 are active production parts from Infineon Technologies that maintain the SOT-23-3 package footprint of the BFS17HTC. Both parts are rated for 15V collector-emitter breakdown voltage, matching the original specification. These parts provide enhanced RF performance at 5GHz transition frequency with 280mW maximum power dissipation and 45mA maximum collector current. Both are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard manufacturing processes.

For Enhanced RF Performance with Alternative Packages:

BFR182WH6327XTSA1 (Infineon Technologies) offers 8GHz transition frequency in SOT-323 package with 12V rating and 250mW power dissipation. This part is suitable for applications requiring higher frequency performance while accepting a different surface mount footprint. BFR740L3RHE6327XTSA1 (Infineon Technologies) provides the highest frequency capability at 42GHz in SOT-883 package, appropriate for millimeter-wave applications with reduced voltage rating (4.7V) and power dissipation (160mW).

For High-Power Applications:

MAPR-002729-170M00, MRF428, and PH3135-5S from MACOM Technology Solutions are chassis mount devices designed for significantly higher power levels (5W to 170W) and current handling (750mA to 27A). These parts are suitable only for applications where the original SOT-23-3 surface mount package is insufficient and chassis mount integration is feasible. All three parts are ROHS3 compliant and active production items.

Compliance and Certification:

All substitute parts listed are ROHS3 compliant and carry REACH Unaffected status, matching the regulatory compliance profile of the BFS17HTC. All parts are classified under ECCN EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can BFR35APE6327HTSA1 or BFR92PE6327HTSA1 be used as direct drop-in replacements for BFS17HTC?

A: Both BFR35APE6327HTSA1 and BFR92PE6327HTSA1 maintain the SOT-23-3 package footprint and are rated for 15V collector-emitter breakdown voltage, matching the BFS17HTC specification. Both are active production parts with ROHS3 compliance. PCB layout compatibility is confirmed for the same package type. Electrical performance differs at higher frequencies (5GHz vs. 1.3GHz), which may require circuit tuning adjustments depending on application bandwidth requirements.

Q: What is the primary difference between BFR35APE6327HTSA1 and BFR92PE6327HTSA1?

A: Both parts are electrically identical with matching specifications: 15V Vce, 5GHz transition frequency, 280mW power dissipation, 45mA maximum collector current, and SOT-23-3 packaging. The primary difference is inventory availability and supplier designation. BFR92PE6327HTSA1 has significantly higher stock levels (305,200 pcs vs. 3,706 pcs).

Q: Why do MACOM parts (MAPR-002729-170M00, MRF428, PH3135-5S) have different package types?

A: MACOM parts are designed for high-power RF applications requiring chassis mount integration rather than surface mount PCB assembly. These parts are not suitable for applications constrained to SOT-23-3 footprints. Selection of MACOM parts is appropriate only when application power requirements exceed 330mW and system design accommodates chassis mount configuration.

Q: Can BFR182WH6327XTSA1 be used in place of BFS17HTC despite different package?

A: BFR182WH6327XTSA1 uses SOT-323 package instead of SOT-23-3, requiring PCB layout modification. The part offers enhanced RF performance at 8GHz with 12V rating and 250mW power dissipation. Substitution is feasible only if circuit board redesign is acceptable and the application benefits from higher frequency capability.

Q: What is the significance of transition frequency differences among substitute parts?

A: Transition frequency (fT) indicates the frequency at which transistor current gain drops to unity. The BFS17HTC operates at 1.3GHz. Substitute parts with higher fT values (5GHz, 8GHz, 24GHz, 42GHz) provide greater frequency headroom and lower noise figure at higher operating frequencies. Selection depends on application bandwidth requirements. Parts with lower fT (0.55GHz for 2SC2714-Y) are unsuitable for the original 1.3GHz specification.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed in this reference are ROHS3 compliant and carry REACH Unaffected status, matching the regulatory compliance of the BFS17HTC. Moisture sensitivity level is MSL 1 (Unlimited) for all parts, ensuring compatibility with standard manufacturing and storage conditions.

Q: What does "Active" product status mean for substitute parts?

A: Active status indicates the part is in current production and available from authorized distributors. The BFS17HTC is classified as obsolete, meaning it is no longer manufactured. Active substitute parts ensure long-term availability and supply chain continuity for new designs and production support.

Q: How do noise figure specifications compare across substitute parts?

A: The BFS17HTC specifies 4.5dB noise figure at 500MHz. Substitute parts with higher transition frequencies generally exhibit lower noise figures at their respective measurement frequencies: BFR92PE6327HTSA1 and BFR35APE6327HTSA1 specify 1.4dB–2dB at 900MHz–1.8GHz; BFR182WH6327XTSA1 specifies 0.9dB–1.3dB at 900MHz–1.8GHz; BFR740L3RHE6327XTSA1 specifies 0.5dB–0.8dB at 1.8GHz–6GHz. Lower noise figure indicates superior performance in low-signal applications.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message