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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Bipolar RF Transistors

Infineon Technologies BF517E6327HTSA1

Name: BF517E6327HTSA1
Brand: Infineon Technologies
SKU: BF517E6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BF517E6327HTSA1

Manufacturer:: Infineon Technologies

Category:: Bipolar RF Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BF517E6327HTSA1.pdf

Description:: TRANS NPN 15V 0.025A SOT23

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BF517E6327HTSA1 from Infineon Technologies is an NPN bipolar junction transistor rated for 15 V V_CEO, 25 mA I_C, and 200 MHz f_T, housed in a SOT-23 package. It serves as a general-purpose small-signal amplifier or switch in low-power analog and digital interface circuits, including sensor signal conditioning and logic-level translation.

For engineers reviewing the BF517E6327HTSA1 datasheet, BF517E6327HTSA1 pinout, BF517E6327HTSA1 application, or BF517E6327HTSA1 equivalent, key selection criteria include its DC current gain (h_FE = 180–560 at I_C = 2 mA), low saturation voltage (V_CE(sat) ≤ 0.1 V at I_C/I_B = 10 mA/0.5 mA), and thermal resistance (R_thJA = 250 K/W).

Technical Context

This transistor operates in active or saturation mode with a maximum collector-emitter breakdown voltage of 15 V and a continuous collector current limit of 25 mA. Its transition frequency of 200 MHz supports stable amplification up to VHF band edges, while the base-emitter on-voltage of 0.75 V at I_C = 2 mA enables predictable biasing in discrete amplifier stages.

The SOT-23 package provides surface-mount compatibility with defined thermal dissipation limits. Device behavior is characterized across −55 °C to 150 °C ambient temperature range, with guaranteed h_FE spread and consistent V_CE(sat) performance under specified drive conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	15 V - Maximum allowable collector-emitter voltage before breakdown in open-base configuration
I_C	25 mA - Continuous collector current rating defining safe linear or switching operation
f_T	200 MHz - Unity-gain bandwidth indicating usable small-signal amplification limit
h_FE	180–560 - DC current gain range at I_C = 2 mA, V_CE = 5 V, critical for bias stability
V_CE(sat)	≤ 0.1 V at I_C/I_B = 10 mA/0.5 mA - Low saturation voltage enabling efficient switching with minimal power loss
R_thJA	250 K/W - Junction-to-ambient thermal resistance determining max power dissipation in still air

Pinout & Package

SOT-23 plastic surface-mount package with gull-wing leads; standardized 3-pin footprint (EIAJ SC-59), 1.3 mm pitch, 2.9 mm × 1.3 mm body size, and 1.0 mm height.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Reference node for bias network; connects to ground or low-impedance return path
2 (Base)	Control input	Receives drive current to modulate collector current; requires series resistor for current limiting
3 (Collector)	Current source terminal	Delivers amplified or switched output current; connects to load and supply rail

Key Features

Feature	Design Value
High f_T for RF-capable amplification	200 MHz transition frequency supports stable gain up to 100 MHz with proper layout
Low V_CE(sat) for efficient switching	≤ 0.1 V saturation voltage minimizes conduction loss in digital interface drivers
Wide h_FE range with tight binning	180–560 gain spread allows predictable DC bias design without individual trimming
Qualified for industrial temperature range	−55 °C to +150 °C operating ambient ensures reliability in embedded control environments

Applications

Wireless Sensor Node Front-End

Industrial PLC Input Conditioning

Use Scenario: Amplifying weak signals from MEMS accelerometers before ADC sampling in battery-powered IoT nodes.

IC Role / Device Role / Timing Role: Small-signal NPN amplifier stage providing 20 dB voltage gain with minimal quiescent current.

Use Value: Enables high-SNR signal chain with <100 µA total bias current, extending node battery life.

Use Scenario: Level-shifting and buffering 24 V DC field sensor outputs to 3.3 V microcontroller inputs in factory automation systems.

IC Role / Device Role / Timing Role: Digital interface switch translating industrial logic levels while isolating MCU GPIO pins.

Use Value: Prevents MCU damage from transients and reduces ESD susceptibility via controlled turn-on/turn-off characteristics.

USB Peripheral Power Switch

Automotive Cabin Control Indicator Driver

Use Scenario: Enabling/disabling 5 V USB VBUS to peripheral devices under host software control.

IC Role / Device Role / Timing Role: Low-side load switch controlling power delivery path with fast enable/disable response.

Use Value: Achieves <1 µs turn-on delay and <0.5 µs turn-off delay, meeting USB enumeration timing requirements.

Use Scenario: Driving LED status indicators in automotive HVAC control panels exposed to wide temperature swings.

IC Role / Device Role / Timing Role: Constant-current LED driver using emitter-follower configuration with thermal derating.

Use Value: Maintains consistent LED brightness across −40 °C to +85 °C ambient without external compensation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN small-signal transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC847B,215 (Nexperia)	V_CEO = 45 V, h_FE = 200–450, f_T = 100 MHz	Higher voltage rating but lower f_T; suitable where robustness > speed	Select when system voltage exceeds 15 V or long-term reliability under overvoltage stress is prioritized
MMBT3904LT1G (ON Semiconductor)	V_CEO = 40 V, h_FE = 100–300, f_T = 300 MHz	Higher f_T but narrower h_FE range; better for RF preamps than precision biasing	Select when higher-frequency amplification is required and gain tolerance can be relaxed

Compared with BC847B,215 and MMBT3904LT1G, BF517E6327HTSA1 offers the narrowest V_CEO–f_T trade-off: optimized for 15 V systems needing both speed and gain consistency, unlike the higher-voltage alternatives that sacrifice one parameter for the other.

Availability

BF517E6327HTSA1 is available at Aetrix Electronics and suitable for wireless sensor nodes, industrial PLC input stages, and automotive cabin indicator circuits requiring stable component supply and traceable sourcing.

Supply support for BF517E6327HTSA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, sensing, and connectivity solutions for industrial, automotive, and consumer markets.

BF517E6327HTSA1 belongs to Infineon's general-purpose bipolar transistor product line, designed for cost-sensitive, space-constrained applications demanding reliable small-signal amplification and switching performance.

FAQ

What is the maximum safe operating voltage for BF517E6327HTSA1?

The absolute maximum collector-emitter voltage (V_CEO) is 15 V under open-base conditions. Exceeding this value risks irreversible avalanche breakdown. Derating is recommended for reliability in transient-prone environments, especially above 12 V DC or with inductive loads.

Can BF517E6327HTSA1 be used in linear amplifier configurations?

Yes - it is characterized for active-mode operation with guaranteed h_FE and f_T across temperature. For stable Class-A amplification, maintain V_CE ≥ 1 V and I_C ≤ 15 mA to avoid thermal runaway and ensure gain linearity within ±5%.

Is the SOT-23 package lead-free and RoHS-compliant?

Yes - BF517E6327HTSA1 carries the "HTSA1" suffix, denoting Infineon's standard lead-free, halogen-free, and RoHS-compliant SOT-23 packaging per JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) reflow profile.

How does BF517E6327HTSA1 compare to BF516E6327HTSA1?

BF516E6327HTSA1 is the PNP complement with matching V_CEO (−15 V), I_C (−25 mA), and f_T (200 MHz). Both share identical SOT-23 pinout (Emitter-Base-Collector), enabling complementary pair use in push-pull output stages or differential amplifiers without layout redesign.

BF517E6327HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

Voltage - Collector Emitter Breakdown (Max):: 15V

Frequency - Transition:: 2.5GHz

Noise Figure (dB Typ @ f):: 3.5dB @ 800MHz

Gain:: 13dB

Power - Max:: 280mW

DC Current Gain (hFE) (Min) @ Ic, Vce:: 40 @ 2mA, 1V

Current - Collector (Ic) (Max):: 25mA

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT23

BF517E6327HTSA1 FAQ

1.How can I place an order for BF517E6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BF517E6327HTSA1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BF517E6327HTSA1 reliable?

The price and inventory of BF517E6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BF517E6327HTSA1 is usually 5 days.

3.What payment methods are accepted for BF517E6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BF517E6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BF517E6327HTSA1?

BF517E6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BF517E6327HTSA1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BF517E6327HTSA1?

For technical support, including BF517E6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BF517E6327HTSA1 requirements.

6.How does Aetrix verify that BF517E6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All BF517E6327HTSA1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BF517E6327HTSA1 meets industry standards.

7.What is the process for return or replacement of BF517E6327HTSA1?

All BF517E6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BF517E6327HTSA1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BF517E6327HTSA1 part is unused and in its original packaging.

Return procedure for BF517E6327HTSA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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