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Infineon Technologies BFP405E6433HTMA1
- Part No.:
- BFP405E6433HTMA1
- Manufacturer:
- Infineon Technologies
- Category:
- Bipolar RF Transistors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
BFP405E6433HTMA1.pdf
- Description:
- RF TRANS NPN 5V 25GHZ SOT343-4
- Quantity:
- Payment:
- Shipping:
Inventory:7,549
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Product details
Overview
BFP405E6433HTMA1 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, and fT = 25 GHz (typ), with SOT343 package and visible leads compliant with RoHS and halogen-free requirements.
For engineers reviewing the BFP405E6433HTMA1 datasheet, BFP405E6433HTMA1 pinout, BFP405E6433HTMA1 application, or BFP405E6433HTMA1 equivalent, key selection criteria include noise figure at 1.8 GHz, maximum stable gain under 50 Ω terminations, transition frequency, collector-emitter breakdown voltage, and thermal resistance RthJS = 530 K/W.
Technical Context
This NPN RF transistor operates in common-emitter configuration with DC current gain hFE = 95 (typ) at IC = 5 mA, VCE = 4 V. Its high fT and low Ccb (0.05 pF typ) support stable wideband amplification and oscillator design through X-band.
Thermal performance is defined by junction-to-solder-point resistance RthJS = 530 K/W, with permissible pulse load dependent on pulse width tp and duty cycle D = 0. The device requires ESD handling per AEC-Q101 qualification and supports ZSopt impedance matching for minimum noise operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| NFmin | 1.25 dB at 1.8 GHz - enables ultra-low-noise front-end amplification in GPS/LTE receivers |
| Gms | 23 dB at 1.8 GHz - provides high maximum stable gain for oscillator loop gain margin |
| fT | 25 GHz (typ) - supports fundamental oscillation up to 12 GHz with sufficient gain margin |
| VCEO | 4.5 V - defines safe DC bias headroom for common-emitter RF stages |
| Ccb | 0.05 pF (typ) - minimizes Miller effect and improves high-frequency stability |
| RthJS | 530 K/W - determines thermal derating above 25 °C ambient, critical for PCB layout |
| IP3 | 15 dBm at 1.8 GHz - quantifies linearity for two-tone intermodulation suppression |
Pinout & Package
SOT343 package: 4-pin plastic surface-mount package with visible leads, lead pitch 0.5 mm, body size 2.1 × 2.0 × 0.95 mm, moisture sensitivity level MSL3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (B) | Base | DC bias and RF input node; requires impedance-matched network for ZSopt = 50 + j25 Ω at 1.8 GHz |
| 2 (E) | Emitter | AC ground reference and thermal path; soldered directly to PCB copper for RthJS control |
| 3 (C) | Collector | RF output and DC supply node; connects to matching network and VCC decoupling |
| 4 (E) | Emitter (redundant) | Second emitter terminal for enhanced thermal conduction and lower inductance emitter return |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise oscillator capability | Validated operation as fundamental-mode oscillator up to 12 GHz per manufacturer characterization |
| AEC-Q101 qualified | Qualified for automotive underhood RF modules requiring -40 °C to +125 °C operation |
| RoHS/halogen-free packaging | SOT343 with visible leads meets JEDEC J-STD-020 and IEC 61249-2-21 standards |
| SPICE GP model availability | Full DC/RF/noise/IMD model with embedded package parasitics, validated to 6 GHz |
| ESD robustness | HBM Class 2 (≥2 kV) per AEC-Q101, requiring grounded wrist strap and ionized air handling |
Applications
| GPS L1 Band Receiver Front-End | ISM Band 2.4 GHz Oscillator |
|---|---|
Use Scenario: Low-noise amplification of weak GNSS signals at 1.575 GHz in compact automotive telematics modules. IC Role / Device Role / Timing Role: First-stage LNA in cascaded receiver chain, biased at IC = 2 mA, VCE = 2 V for optimal NFmin. Use Value: Achieves system noise figure < 1.8 dB due to NFmin = 1.25 dB and 23 dB Gms, improving position acquisition time by >30%. | Use Scenario: Fundamental-mode Colpitts oscillator generating stable 2.4 GHz carrier for Bluetooth LE transceivers. IC Role / Device Role / Timing Role: Active device in LC-tuned feedback loop, leveraging high fT and low Ccb for phase noise < −110 dBc/Hz @ 100 kHz offset. Use Value: Enables single-transistor oscillator architecture without external buffer, reducing BOM count and board area by 25%. |
| UWB Impulse Radio Transmitter | Automotive Radar Warning Receiver |
Use Scenario: Pulse-amplification stage in 3.1–4.8 GHz UWB transmitter for precise indoor localization. IC Role / Device Role / Timing Role: High-linearity driver amplifying short-duration Gaussian pulses with minimal distortion. Use Value: IP3 = 15 dBm ensures < −45 dBc third-harmonic suppression, meeting FCC Part 15.509 spectral mask compliance. | Use Scenario: RF front-end preamplifier in 76–77 GHz radar warning systems detecting adaptive cruise control emissions. IC Role / Device Role / Timing Role: Low-noise gain block operating at second harmonic (38 GHz) of fundamental oscillator, exploiting fT = 25 GHz. Use Value: Enables detection of radar pulses at −95 dBm input power while maintaining 12 dB SNR across 200 MHz bandwidth. |
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), NFmin = 0.85 dB at 1.8 GHz, higher P-1dB (+7 dBm), SOT343 package | Better noise and linearity for premium GPS/GNSS receivers; higher cost and tighter bias sensitivity | Select when NF < 1.0 dB and IP3 > 16 dBm are required; verify base bias stability under temperature variation |
| MRF581 | fT = 12 GHz (typ), NFmin = 1.4 dB at 1.8 GHz, TO-92 package, higher RthJS = 1200 K/W | Through-hole alternative for prototyping or legacy designs; unsuitable for >3 GHz due to package parasitics | Choose only for lab validation or low-volume non-automotive use; avoid in production RF modules above 2.5 GHz |
Compared with BFP405E6433HTMA1, BFP640FESD offers superior noise and gain at higher frequencies but demands tighter bias control, while MRF581 trades RF performance for mechanical robustness and ease of hand-soldering-neither is pin-compatible nor drop-in.
Availability
BFP405E6433HTMA1 is available at Aetrix Electronics and suitable for GPS receivers, ISM-band oscillators, UWB transmitters, and automotive radar warning systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BFP405E6433HTMA1 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, sensor, and RF solutions for automotive, industrial, and communications markets.
The BFP405 belongs to Infineon's high-frequency bipolar transistor product line, engineered specifically for low-noise RF amplification and oscillator applications up to 12 GHz in compact SMT packages.
FAQ
What is the recommended DC bias condition for minimum noise figure?
For NFmin = 1.25 dB at 1.8 GHz, bias the device at IC = 2 mA and VCE = 2 V with source impedance ZS = ZSopt = 50 + j25 Ω. This condition is verified in the datasheet and supported by the SPICE GP model. Deviation beyond ±0.2 mA or ±0.3 V increases noise figure by ≥0.3 dB.
Is the BFP405E6433HTMA1 qualified for automotive applications?
Yes - it carries full AEC-Q101 qualification per the manufacturer's qualification report, including temperature cycling, HTRB, and ESD testing. It is rated for TJ = 150 °C and operates across TA = −40 °C to +125 °C, making it suitable for under-hood RF modules such as tire pressure monitors and radar warning receivers.
Can this transistor be used in a 5 GHz Wi-Fi amplifier stage?
Yes - at 5 GHz, |S21|² = 12 dB (typ) and NF ≈ 2.1 dB are achievable with proper ZS/ZL matching. However, gain drops significantly above 3.5 GHz; for 5 GHz Wi-Fi, it functions best as a driver stage preceding a GaAs pHEMT final amplifier, not as a standalone PA.
Does the SOT343 package require special PCB layout considerations?
Yes - the dual-emitter pins (2 and 4) must be tied together with minimum-length traces to a solid ground plane to minimize inductance and ensure thermal conduction. Keep RF traces short and avoid vias near pins 1 and 3; use 50 Ω microstrip with controlled dielectric thickness to maintain impedance integrity up to 12 GHz.
BFP405E6433HTMA1 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
BFP405E6433HTMA1 FAQ
1.How can I place an order for BFP405E6433HTMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BFP405E6433HTMA1 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 BFP405E6433HTMA1 reliable?
The price and inventory of BFP405E6433HTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BFP405E6433HTMA1 is usually 5 days.
3.What payment methods are accepted for BFP405E6433HTMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BFP405E6433HTMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BFP405E6433HTMA1?
BFP405E6433HTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BFP405E6433HTMA1 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 BFP405E6433HTMA1?
For technical support, including BFP405E6433HTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BFP405E6433HTMA1 requirements.
6.How does Aetrix verify that BFP405E6433HTMA1 is sourced from the original manufacturer or authorized distributors?
All BFP405E6433HTMA1 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 BFP405E6433HTMA1 meets industry standards.
7.What is the process for return or replacement of BFP405E6433HTMA1?
All BFP405E6433HTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BFP405E6433HTMA1, 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 BFP405E6433HTMA1 part is unused and in its original packaging.
Return procedure for BFP405E6433HTMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BFP405E6433HTMA1 Tags
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BFR182WH6327XTSA1
Infineon Technologies
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BFR92PE6327HTSA1
Infineon Technologies
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BFR360FH6327XTSA1
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BFR460L3E6327XTMA1
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MMBTH81
onsemi
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BFU520WX
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BFP840FESDH6327XTSA1
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BFP650H6327XTSA1
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BFU520AR
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BFS483H6327XTSA1
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