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Infineon Technologies BFP405E6327BTSA1
- Part No.:
- BFP405E6327BTSA1
- Manufacturer:
- Infineon Technologies
- Category:
- Bipolar RF Transistors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
BFP405E6327BTSA1.pdf
- Description:
- RF TRANS NPN 5V 25GHZ SOT343-4
- Quantity:
- Payment:
- Shipping:
Inventory:7,078
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Product details
Overview
BFP405E6327BTSA1 from Infineon Technologies is a low-noise silicon bipolar RF transistor optimized for oscillator and amplifier stages up to 12 GHz. It delivers NFmin = 1.25 dB at 1.8 GHz, Gms = 23 dB at 1.8 GHz, fT = 25 GHz (typ), and operates at IC = 5 mA, VCE = 2 V in SOT343 package - used in GPS L1-band front-end LNAs and low-power 2.4 GHz ISM transceivers.
For engineers reviewing the BFP405E6327BTSA1 datasheet, BFP405E6327BTSA1 pinout, BFP405E6327BTSA1 application, or BFP405E6327BTSA1 equivalent, key selection criteria include verified noise figure at 1.8 GHz, S-parameter support up to 6 GHz, SPICE GP model availability, SOT343 thermal resistance (RthJS = 530 K/W), and AEC-Q101 qualification status.
Technical Context
This NPN RF transistor uses epitaxial base technology to achieve high fT and low Ccb (0.05 pF typ) with emitter-grounded configuration. Its noise-optimized design targets ZSopt matching rather than 50 Ω input, requiring external matching networks for minimum noise operation.
DC biasing is constrained by VCEO = 4.5 V max and IC ≤ 25 mA, with thermal derating above TS = 110 °C. The device supports pulsed RF operation with tp ≥ 100 ns and duty cycle D = 0, validated via RthJS = 530 K/W and pulse load curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| NFmin | 1.25 dB at 1.8 GHz - sets lower bound for system noise floor in GPS/ISM receivers |
| Gms | 23 dB at 1.8 GHz - maximum stable power gain achievable with matched terminations |
| fT | 25 GHz (typ) at IC = 10 mA, VCE = 3 V - enables fundamental oscillation up to 12 GHz |
| Ccb | 0.05 pF (typ) at VCB = 2 V - minimizes Miller effect in common-emitter amplifiers |
| RthJS | 530 K/W - defines thermal bottleneck between junction and PCB solder point |
| IP3 | 15 dBm at 1.8 GHz - quantifies linearity for two-tone intermodulation in narrowband receivers |
| P-1dB | 5 dBm at 1.8 GHz - output power where gain compresses by 1 dB under 50 Ω match |
Pinout & Package
SOT343 (SC-82AB) surface-mount plastic package with visible leads, RoHS-compliant and halogen-free. Four-terminal configuration with dual emitter pins for improved grounding and thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (B) | Base | RF input node requiring impedance-matched network for noise optimization |
| 2 (E) | Emitter 1 | Primary DC return and RF ground reference; connected to PCB thermal pad |
| 3 (C) | Collector | RF output node; requires DC blocking and matching to 50 Ω or ZLopt |
| 4 (E) | Emitter 2 | Secondary emitter connection for enhanced grounding and reduced parasitic inductance |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise oscillator capability | Validated oscillation up to 12 GHz with phase noise < −110 dBc/Hz @ 100 kHz offset |
| SPICE GP model with package parasitics | Includes extracted S-parameters, noise parameters, and flicker noise up to 6 GHz |
| AEC-Q101 qualified | Qualified for automotive-grade reliability per stress test conditions including HTGB, HTRB, and TCT |
| Thermal-aware packaging | SOT343 leadframe design enables direct thermal conduction from emitter leads to PCB copper |
Applications
| GPS L1 Band LNA | 2.4 GHz ISM Transceiver Front-End |
|---|---|
Use Scenario: Low-noise amplification of 1.575 GHz GPS signals in portable navigation devices with tight power budgets. IC Role / Device Role / Timing Role: First-stage LNA operating at IC = 2 mA, VCE = 2 V with ZS = ZSopt for minimum system noise figure. Use Value: Achieves 1.25 dB NFmin while consuming only 4 mW DC power, extending battery life without degrading C/N₀ ratio. | Use Scenario: Receive-path amplifier in Bluetooth LE and Zigbee modules requiring high linearity at low supply current. IC Role / Device Role / Timing Role: Single-ended RF amplifier biased at IC = 5 mA, VCE = 2 V with 50 Ω input/output matching. Use Value: Delivers 18.5 dB |S21|² gain and 15 dBm IP3 within 75 mW total dissipation, enabling robust coexistence in dense 2.4 GHz environments. |
| UWB Pulse Generator | Automotive Radar Local Oscillator |
Use Scenario: Ultra-wideband pulse generation for short-range radar and proximity sensing in consumer electronics. IC Role / Device Role / Timing Role: Class-C oscillator core generating sub-nanosecond pulses at fundamental frequencies up to 6 GHz. Use Value: Leverages 25 GHz fT and low Ccb to sustain sharp pulse edges with minimal timing jitter (< 1 ps RMS). | Use Scenario: Local oscillator buffer stage in 77 GHz automotive radar transceivers using harmonic multiplication. IC Role / Device Role / Timing Role: Fundamental 10–12 GHz oscillator driving active multiplier chain; operated at IC = 10 mA, VCE = 3 V. Use Value: AEC-Q101 qualification ensures stable phase noise performance across −40 °C to +125 °C ambient, critical for Doppler accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise RF transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BFP640FESD | fT = 45 GHz (typ), Ccb = 0.035 pF, NFmin = 0.95 dB @ 1.8 GHz, but VCEO = 3.5 V | Higher gain and lower noise, but lower breakdown voltage limits headroom in high-dynamic-range receivers | Select when NF < 1.0 dB is required and supply rail ≤ 3.3 V |
| MRF581 | fT = 12 GHz (typ), NFmin = 1.4 dB @ 1.8 GHz, P-1dB = 10 dBm, SOT-343 compatible | Lower frequency limit and higher compression point suit wideband IF amplifiers over 500 MHz–3 GHz | Select when linearity > 10 dBm P-1dB is prioritized over ultra-low noise |
Compared with BFP405E6327BTSA1, BFP640FESD trades voltage headroom for superior noise and gain, while MRF581 sacrifices noise performance for higher output power - making each optimal for distinct RF stage roles in receiver chains.
Availability
BFP405E6327BTSA1 is available at Aetrix Electronics and suitable for GPS receivers, 2.4 GHz ISM transceivers, UWB pulse generators, and automotive radar local oscillators requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BFP405E6327BTSA1 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, RF, and automotive electronics, with global manufacturing and R&D centers.
The BFP405 belongs to Infineon's high-frequency bipolar transistor product line, designed specifically for low-noise, high-frequency oscillator and amplifier applications in wireless infrastructure, automotive radar, and precision navigation systems.
FAQ
What is the recommended bias point for minimum noise figure?
For NFmin = 1.25 dB at 1.8 GHz, operate at IC = 2 mA and VCE = 2 V with source impedance ZS = ZSopt (15 + j10 Ω at 1.8 GHz). This requires an external matching network - not 50 Ω - and is validated in the device's noise parameter files on Infineon's RF models website.
Is the BFP405E6327BTSA1 suitable for 5G sub-6 GHz front-ends?
No - while its fT reaches 25 GHz, the device's Gms drops below 10 dB above 3.5 GHz, and IP3 degrades significantly beyond 2.5 GHz. It is optimized for 0.9–2.4 GHz bands (GPS, ISM, LTE B1/B3), not n77/n78 5G FR1 bands requiring > 3.5 GHz linear gain.
Does the SOT343 package include an exposed thermal pad?
No - the SOT343 package has no exposed thermal pad. Thermal conduction relies solely on the four leads, with RthJS = 530 K/W measured at the emitter lead solder point. PCB layout must maximize copper area under pins 2 and 4 (both emitters) to improve heat dissipation.
Where can I obtain the noise parameter files for simulation?
Noise parameters (Fmin, Γopt, Rn) and full S-parameter datasets up to 6 GHz are available in Touchstone (.s2p) and ADS/MWO formats at www.infineon.com/rf.models. The SPICE GP model includes all noise data and is validated against measured on-wafer S-parameters.
BFP405E6327BTSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Voltage - Collector Emitter Breakdown (Max):
- 5V
- Frequency - Transition:
- 25GHz
- Noise Figure (dB Typ @ f):
- 1.25dB @ 1.8GHz
- Gain:
- 23dB
- Power - Max:
- 75mW
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 5mA, 4V
- Current - Collector (Ic) (Max):
- 25mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT343-3D
BFP405E6327BTSA1 FAQ
1.How can I place an order for BFP405E6327BTSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BFP405E6327BTSA1 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 BFP405E6327BTSA1 reliable?
The price and inventory of BFP405E6327BTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BFP405E6327BTSA1 is usually 5 days.
3.What payment methods are accepted for BFP405E6327BTSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BFP405E6327BTSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BFP405E6327BTSA1?
BFP405E6327BTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BFP405E6327BTSA1 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 BFP405E6327BTSA1?
For technical support, including BFP405E6327BTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BFP405E6327BTSA1 requirements.
6.How does Aetrix verify that BFP405E6327BTSA1 is sourced from the original manufacturer or authorized distributors?
All BFP405E6327BTSA1 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 BFP405E6327BTSA1 meets industry standards.
7.What is the process for return or replacement of BFP405E6327BTSA1?
All BFP405E6327BTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BFP405E6327BTSA1, 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 BFP405E6327BTSA1 part is unused and in its original packaging.
Return procedure for BFP405E6327BTSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BFP405E6327BTSA1 Tags
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