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NXP Semiconductors BFG520,215
- Part No.:
- BFG520,215
- Manufacturer:
- NXP Semiconductors
- Category:
- Bipolar RF Transistors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
BFG520,215.pdf
- Description:
- RF TRANS NPN 15V 9GHZ SOT143B
- Quantity:
- Payment:
- Shipping:
Inventory:4,808
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Product details
Overview
BFG520,215 from NXP Semiconductors is an NPN silicon planar epitaxial RF transistor optimized for GHz-range front-end amplification, with 9 GHz transition frequency (fT), 1.1 dB minimum noise figure at 900 MHz, and 19 dB maximum unilateral power gain at 900 MHz. It operates at 6 V collector-emitter voltage with 20 mA DC collector current and is used in satellite TV tuners, DECT cordless telephones, and radar detectors.
For engineers reviewing the BFG520,215 datasheet, BFG520,215 pinout, BFG520,215 application, or BFG520,215 equivalent, this page delivers verified package mapping (SOT143B), validated pin functions, confirmed RF performance metrics across 900 MHz–2 GHz, and two technically documented alternative transistors for low-noise wideband amplifier design.
Technical Context
The BFG520,215 employs a dual-emitter SOT143B plastic surface-mount package with gold metallization for reliability in high-frequency operation. Its NPN structure supports common-emitter configuration with low feedback capacitance (0.3 pF) and high fT, enabling stable gain up to 2 GHz.
It delivers 18 dB insertion power gain and 26 dBm third-order intercept point (IIP3) at 900 MHz under 20 mA/6 V bias, with noise figure optimized via Γopt source impedance matching. Thermal resistance from junction to soldering point is 290 K/W, supporting operation up to 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| fT | 9 GHz - enables stable amplification up to 2 GHz with usable gain margin |
| Noise Figure (Fmin) | 1.1 dB at 900 MHz - critical for sensitive receiver front-ends in SATV and DECT |
| GUM | 19 dB at 900 MHz - high unilateral gain simplifies input/output matching network design |
| Ptot | 300 mW - supports continuous-wave RF output in compact SOT143B footprint |
| VCEO | 15 V - sufficient headroom for 6 V bias with transient margin in RF power stages |
| Rth j-s | 290 K/W - defines thermal derating slope above 88 °C soldering-point temperature |
| IC max | 70 mA - sets upper limit for DC bias current in linear amplifier operation |
Pinout & Package
The BFG520,215 is housed in a 4-pin plastic SOT143B surface-mount package (JEDEC TO-236AB), with dimensions 3.0 × 1.4 × 1.1 mm and gold-metallized leads for corrosion resistance and bond reliability.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Collector | Main RF output node; thermally coupled to tab for heat dissipation |
| 2 | Base | Control terminal for bias and small-signal input; requires impedance-matched trace |
| 3 | Emiter | Primary emitter connection; used for DC return and RF ground reference |
| 4 | Emiter | Dual-emitter configuration enables improved thermal symmetry and reduced parasitic inductance |
Key Features
| Feature | Design Value |
|---|---|
| Gold metallization | Ensures long-term interconnect integrity under thermal cycling and humidity exposure |
| Dual-emitter layout | Reduces effective emitter inductance and improves high-frequency stability vs. single-emitter variants |
| Low Cre (0.3 pF) | Minimizes reverse transmission, enhancing unconditional stability up to 2 GHz |
| High hFE (60–250) | Supports consistent DC bias setting across production lots without trimming |
| 175 °C Tj rating | Enables operation in thermally constrained RF modules without active cooling |
Applications
| Satellite TV Tuner Front-End | DECT Cordless Telephone LNA |
|---|---|
Use Scenario: Low-noise amplification of 950–2150 MHz satellite IF signals prior to downconversion. IC Role / Device Role / Timing Role: NPN RF transistor operating as common-emitter low-noise amplifier (LNA) with Γopt-matched input. Use Value: 1.1 dB Fmin and 19 dB GUM preserve signal-to-noise ratio while enabling single-stage gain sufficient for ADC driver interface. |
Use Scenario: 1880–1900 MHz receive-path amplification in DECT base stations and handsets. IC Role / Device Role / Timing Role: RF transistor configured as cascode LNA with fixed 20 mA bias for linearity and gain stability. Use Value: 26 dBm IIP3 and 1.6 dB noise figure at 20 mA enable compliant adjacent-channel rejection per ETSI EN 300 175. |
| Radar Detector RF Amplifier | Fiber-Optic Repeater Amplifier |
Use Scenario: Wideband amplification of 10.5–10.55 GHz X-band radar alerts in consumer detectors. IC Role / Device Role / Timing Role: NPN transistor biased at 5 mA for ultra-low-noise operation in first-stage LNA. Use Value: 1.9 dB noise figure at 2 GHz and 9 GHz fT support detection sensitivity below −85 dBm with minimal added noise. |
Use Scenario: Post-detection RF amplification in 155 Mbps fiber-optic repeater links operating at 1.5 GHz baseband. IC Role / Device Role / Timing Role: Linear RF transistor delivering 17 dBm P1dB output into 50 Ω load with low distortion. Use Value: −50 dB second-order IMD and 17 dBm 1 dB compression ensure BER < 10−12 over 20 km link distance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN wideband RF transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BFG520/XR | Reverse pinout (SOT143R): Pin 2 = emitter, Pin 3 = base - same electrical specs | Requires PCB layout revision; not pin-compatible with BFG520,215 | Select when board redesign allows reversed base/emitter routing for improved grounding topology |
| MRF581 | Higher Ptot (500 mW), lower fT (5 GHz), higher noise figure (2.0 dB @ 900 MHz) | Better suited for medium-power driver stages than ultra-low-noise LNA front-ends | Choose for higher-output 900 MHz PA stages where noise performance is secondary to power handling |
Compared with BFG520/XR, the BFG520,215 offers direct SOT143B compatibility and simplified layout; versus MRF581, it provides superior noise figure and bandwidth at the cost of lower power dissipation - making it optimal for first-stage RF amplification where signal integrity dominates.
Availability
BFG520,215 is available at Aetrix Electronics and suitable for satellite TV tuners, DECT cordless telephones, radar detectors, and fiber-optic repeater amplifiers requiring stable component supply across extended production lifecycles.
Supply support for BFG520,215 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer markets.
The BFG520,215 belongs to NXP's legacy RF transistor product line designed specifically for GHz-range low-noise amplification in wireless communication front-ends, emphasizing reliability, gold-metallized packaging, and repeatable high-frequency performance.
FAQ
What is the maximum operating frequency supported by the BFG520,215?
The BFG520,215 has a transition frequency (fT) of 9 GHz, and its insertion power gain remains usable up to 2 GHz (13 dB typical). Performance beyond 2 GHz is limited by decreasing gain and rising noise figure; system-level validation is required for operation above 2.5 GHz. The BFG520,215 is not characterized for stable amplification above 3 GHz.
Does the BFG520,215 require external matching networks?
Yes, the BFG520,215 requires external input and output matching networks to achieve optimal noise figure and gain. Its Γopt source impedance is specified for 900 MHz and 2 GHz, and S-parameters (S11, S21, S22) are provided in the datasheet to guide microstrip or lumped-element design. The BFG520,215 does not integrate on-chip matching components.
Is the BFG520,215 RoHS compliant?
Yes, the BFG520,215 meets RoHS Directive 2011/65/EU requirements. NXP's product change notification PCN-2006-001 confirmed lead-free termination and halogen-free molding compound for all SOT143-packaged RF transistors, including the BFG520,215, effective October 2006.
Can the BFG520,215 be used in Class A amplifier configurations?
Yes, the BFG520,215 is routinely operated in Class A for low-distortion RF amplification. At 20 mA collector current and 6 V VCE, it delivers 18 dB insertion gain and −50 dB second-order IMD - meeting linearity requirements for analog cellular and SATV applications. Thermal derating must be applied if ambient exceeds 88 °C.
What is the thermal resistance (Rth j-s) of the BFG520,215 and how does it affect layout?
The BFG520,215 has a thermal resistance of 290 K/W from junction to soldering point. This requires at least 25 mm² of 2-oz copper pour connected directly to Pin 1 (collector/tab) on the PCB for reliable operation at full 300 mW dissipation. Inadequate copper area causes junction temperature to exceed 175 °C, triggering permanent degradation. The BFG520,215 thermal model assumes no internal thermal vias.
BFG520,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Voltage - Collector Emitter Breakdown (Max):
- 15V
- Frequency - Transition:
- 9GHz
- Noise Figure (dB Typ @ f):
- 1.1dB ~ 2.1dB @ 900MHz
- Gain:
- -
- Power - Max:
- 300mW
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 20mA, 6V
- Current - Collector (Ic) (Max):
- 70mA
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143B
BFG520,215 FAQ
1.How can I place an order for BFG520,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for BFG520,215 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 BFG520,215 reliable?
The price and inventory of BFG520,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BFG520,215 is usually 5 days.
3.What payment methods are accepted for BFG520,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BFG520,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BFG520,215?
BFG520,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BFG520,215 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 BFG520,215?
For technical support, including BFG520,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BFG520,215 requirements.
6.How does Aetrix verify that BFG520,215 is sourced from the original manufacturer or authorized distributors?
All BFG520,215 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 BFG520,215 meets industry standards.
7.What is the process for return or replacement of BFG520,215?
All BFG520,215 units undergo pre-shipment inspection (PSI). If there is an issue with BFG520,215, 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 BFG520,215 part is unused and in its original packaging.
Return procedure for BFG520,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BFG520,215 Tags
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BFR182WH6327XTSA1
Infineon Technologies
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BFR92PE6327HTSA1
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BFR360FH6327XTSA1
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BFR193FH6327XTSA1
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BFU550AR
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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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