Product added to cart**

The product has been added to cart

Quick View

Add to favourite

Add this product to a favourite list

Forgot password?

If you do not remember your password, enter the e-mail address you used to register, it will be sent a new password, you will be able to change it at your next log-in.

The e-mail you entered is incorrect or does not exist

Empty cart

Do you want to empty the cart?
Confirm
  • English
    • Italiano
  • USD ($)
    • EUR (€)
    • GBP (£)
    • CHF (Fr)
    • SEK (Kr)
    • NOK (Kr)
    • DKK (Kr)
    • CZK (Kč)
    • PLN (zł)
    • AUD (A$)
    • CAD (C$)
    • MXN (MEX$)
    • JPY (¥)
    • HKD (HK$)
    • TWD (NT$)
    • CNY (¥)
    • INR (₹)
    • RUB (₽)
    • ZAR (R)
  • Track your order
  • Login / Register
logo
+39 0362 284992
Contact us
All categories
  • All categories
  • Electronic components
  • Connectors and adapters
  • Cables and wires
  • Toroids and ferrites
  • Accessories
0
Cart: $0.00
  •   Cart is empty
  • Electronic components
    • Diodes (270)
    • Transistors (367)
    • Power amplifier modules (56)
    • Integrated circuits (379)
    • Capacitors (1357)
    • EMI and RFI filters (65)
    • Inductors and coils (389)
    • IF, RF and audio filters (212)
    • Dummy loads, resistors and attenuators (521)
    • Transformers, switches and power splitters (164)
    • Circulators and isolators (159)
    • Crystals, resonators and oscillators (411)
    • Complete devices and connectorized modules (23)
  • Connectors and adapters
    • RF coaxial connectors (276)
    • RF coaxial adapters (93)
    • Waveguide to coaxial adapters (9)
    • Coaxial cable terminators (6)
    • DC Blocks (5)
    • Accessories for coaxial connectors (15)
  • Cables and wires
    • RF coaxial cables (62)
    • RF coaxial cable assemblies (433)
    • Wires for coil and ferrite windings (39)
    • PTFE insulating sleeves (16)
  • Toroids and ferrites
    • Ferrite toroids (41)
    • RF iron powder toroids (77)
    • Multi-aperture ferrite cores (37)
    • Ferrite rods (13)
    • Ferrite beads and VK200 (13)
    • Other ferrite cores (47)
    • Split core ferrites for cables (19)
  • Accessories
    • Electronics enclosures (36)
    • Microwave tuning elements (14)
    • PTFE washers and spacers (14)
    • Hex spacers / standoffs (7)
    • Shielding finger-stock gaskets (11)
    • Conductive gaskets (3)
    • RF and microwave laminates (75)
    • Printed circuit boards (1)
    • Microwave absorbing materials (27)
    • Tools and equipments (17)
    • Components kits (4)
  • Catalogue
    • Catalogue (5783)
  • Electronic components
    • Electronic components (4373)
    • Connectors and adapters (404)
    • Cables and wires (550)
    • Toroids and ferrites (247)
    • Accessories (209)
  • Transistors
    • Diodes (270)
    • Transistors (367)
    • Power amplifier modules (56)
    • Integrated circuits (379)
    • Capacitors (1357)
    • EMI and RFI filters (65)
    • Inductors and coils (389)
    • IF, RF and audio filters (212)
    • Dummy loads, resistors and attenuators (521)
    • Transformers, switches and power splitters (164)
    • Circulators and isolators (159)
    • Crystals, resonators and oscillators (411)
    • Complete devices and connectorized modules (23)
  • Transistors - BJT
    • Transistors - BJT (165)
    • Transistors - BJT RF power (79)
    • Transistors - RF FET and GaAs-FET (31)
    • Transistors - RF power FET and GaAs-FET (31)
    • Transistors - FET and MOSFET (50)
    • Transistors - power FET and MOSFET (10)
    • Transistor - Darlington (1)

 

Product added to compare list

Maximum number of comparable products was reached

Parametric filters
Brand

  • (4)
  • (5)
  • (1)
  • (1)
  • (1)
  • (2)
  • (10)
  • (8)
  • (1)
  • (1)
  • (15)
  • (1)
  • (4)
  • (6)
  • (3)
  • (36)
  • (1)
  • (6)
  • (2)
  • (4)
  • (29)
  • (10)
  • (6)
  • (1)
  • (1)
  • (3)
  • (2)
  • (1)
Conditions

  • (150)
  • (15)
Polarity

  • (138)
  • (27)
Collector-emitter voltage (Vce max)

  • (2)
  • (1)
  • (1)
  • (1)
  • (1)
  • (5)
  • (2)
  • (1)
  • (3)
  • (1)
  • (1)
  • (4)
  • (1)
  • (2)
  • (1)
  • (1)
  • (5)
  • (1)
  • (1)
  • (1)
  • (1)
  • (8)
  • (21)
  • (42)
  • (7)
  • (1)
  • (3)
  • (10)
  • (7)
  • (2)
  • (5)
  • (2)
  • (6)
  • (3)
  • (2)
  • (2)
  • (1)
  • (1)
  • (1)
  • (3)
Transition frequency (fT)

  • (1)
  • (1)
  • (1)
  • (5)
  • (5)
  • (2)
  • (1)
  • (9)
  • (1)
  • (1)
  • (1)
  • (5)
  • (1)
  • (3)
  • (5)
  • (1)
  • (1)
  • (2)
  • (2)
  • (1)
  • (3)
  • (1)
  • (1)
  • (1)
  • (2)
  • (4)
  • (4)
  • (1)
  • (2)
  • (2)
  • (2)
  • (1)
  • (1)
  • (1)
  • (1)
  • (3)
  • (1)
  • (1)
  • (17)
  • (1)
  • (1)
  • (3)
  • (2)
  • (8)
  • (3)
  • (6)
  • (3)
  • (18)
  • (8)
  • (1)
  • (1)
  • (1)
  • (4)
  • (1)
Collector current (Ic max)

  • (1)
  • (4)
  • (4)
  • (1)
  • (6)
  • (1)
  • (1)
  • (4)
  • (2)
  • (3)
  • (1)
  • (1)
  • (7)
  • (9)
  • (13)
  • (1)
  • (9)
  • (1)
  • (2)
  • (18)
  • (3)
  • (3)
  • (3)
  • (1)
  • (5)
  • (1)
  • (22)
  • (4)
  • (9)
  • (6)
  • (1)
  • (2)
  • (2)
  • (4)
  • (1)
  • (3)
  • (1)
  • (4)
  • (1)
Dissipated power (Ptot)

  • (1)
  • (2)
  • (1)
  • (3)
  • (2)
  • (1)
  • (1)
  • (1)
  • (3)
  • (2)
  • (1)
  • (2)
  • (12)
  • (1)
  • (1)
  • (1)
  • (17)
  • (1)
  • (4)
  • (1)
  • (23)
  • (1)
  • (4)
  • (4)
  • (6)
  • (3)
  • (7)
  • (2)
  • (5)
  • (3)
  • (10)
  • (4)
  • (1)
  • (2)
  • (11)
  • (1)
  • (3)
  • (1)
  • (4)
  • (1)
  • (1)
  • (3)
  • (1)
  • (1)
  • (3)
  • (1)
  • (1)
Mounting

  • (1)
  • (114)
  • (50)
Package

  • (1)
  • (1)
  • (3)
  • (4)
  • (7)
  • (1)
  • (3)
  • (1)
  • (1)
  • (1)
  • (1)
  • (1)
  • (1)
  • (1)
  • (24)
  • (12)
  • (9)
  • (4)
  • (14)
  • (1)
  • (1)
  • (11)
  • (4)
  • (5)
  • (2)
  • (1)
  • (2)
  • (7)
  • (14)
  • (1)
  • (14)
  • (11)
  • (1)
Package type

  • (22)
  • (38)
  • (105)
Reset filters Results:

Discounted products

on sale -30%
Bipolar PNP transistor, SOT-23
Samsung BC857B
Categories

Electronic components
  • Diodes
    • Schottky diodes (hot carrier)
    • Varicap / varactor diodes
    • PIN diodes
    • Multiplier diodes
      • Varactor (or bimode)
      • Step-recovery (or snap-off) and comb generators
    • Germanium and silicon diodes
    • Gunn and Tunnel diodes
    • Noise generator diodes
  • Transistors
    • Transistors - BJT
    • Transistors - BJT RF power
    • Transistors - RF FET and GaAs-FET
    • Transistors - RF power FET and GaAs-FET
    • Transistors - FET and MOSFET
    • Transistors - power FET and MOSFET
    • Transistor - Darlington
  • Power amplifier modules
  • Integrated circuits
    • Synthesizers, PLL, DDS and ADC/DAC ICs
    • Frequency multipliers, dividers and counters
    • Transmitters, receivers, IF amplifiers, modulators and demodulators
    • Integrated circuits for telecommunications and audio
    • RF switch integrated circuits
    • Mixer integrated circuits
      • RF passive mixers
      • Active mixers
    • Power management ICs (PMIC)
      • Voltage regulators: fixed and adjustable
      • DC/DC converters
      • Voltage references
      • Various and power supply accessories
    • Logarithmic integrated circuits
    • MMIC, RFIC and hybrid amplifiers
    • Operational amplifiers
    • Attenuator integrated circuits
    • Temperature sensors
    • Miscellaneous Integrated Circuits
  • Capacitors
    • Variable capacitors / trimmers
      • Standard trimmers
      • High-performance sapphire variable capacitors
      • Microwave air variable capacitors
      • HF and VHF air variable capacitors
    • Leaded ceramic capacitors
    • High power capacitors for HF and VHF
    • Silver mica capacitors
    • Multilayer ceramic capacitors - MLCC
    • SMD film capacitors
    • Ultra-broadband SMD capacitors
    • High Q SMD multilayer capacitors
    • Ceramic trapezoidal and disc capacitors
    • SMD electrolytic capacitors
    • Zero capacity pass-through and standoff insulators
  • EMI and RFI filters
    • Panel mount capacitors and EMI filters
    • PCB mount EMI filters
    • 220Vac line filters
    • Filtered D-SUB connectors
  • Inductors and coils
    • Kits and supports for coil assemblies
    • Tunable RF coils
    • Fixed coils and inductors
      • Standard inductors
      • High Q and RF chip inductors
      • Power inductors
      • High SRF special inductors for BIAS-T, QPL and ultra stable
      • High Q winded coils on threaded cores
      • High current HF / VHF chokes
  • IF, RF and audio filters
    • RF filters
      • RF band-pass filters
      • Tunable helical band-pass filters
      • SAW (Surface Acoustic Wave) filters
      • RF low-pass filters
      • RF high-pass filters
      • RF band-stop filters
      • Duplexer filters
    • FM discriminator filters
  • Dummy loads, resistors and attenuators
    • Flange mount terminations and resistors
    • Coaxial terminations
    • Waveguide terminations
    • Chip terminations
    • Resistors
      • SMD chip resistors
      • Non-inductive resistors
      • Tubular resistors
    • Potentiometers / resistive trimmers
    • Fixed attenuators
      • Coaxial attenuators
      • Chip attenuators
    • Variable attenuators
  • Transformers, switches and power splitters
    • Wide band RF transformers and baluns
    • Power dividers and combiners
    • Electromechanical relays
    • Manual RF switches
  • Circulators and isolators
  • Crystals, resonators and oscillators
    • Crystals
    • Tuning fork resonators
    • Ceramic resonators
    • SAW resonators
    • VCO oscillators
    • Microwave dielectric resonators DR
      • TE dielectric resonators
      • TEM coaxial resonators
    • DRO oscillators (Dielectric Resonator Oscillator)
    • Synthesized oscillators
  • Complete devices and connectorized modules
    • Amplifiers
    • Noise generators
    • Front-ends and receivers
    • Multipliers
    • Bias Tee
    • Up/down converters and mixers
Connectors and adapters
  • RF coaxial connectors
  • RF coaxial adapters
  • Waveguide to coaxial adapters
  • Coaxial cable terminators
  • DC Blocks
  • Accessories for coaxial connectors
    • Coaxial connector protective caps
    • Various accessories
Cables and wires
  • RF coaxial cables
  • RF coaxial cable assemblies
  • Wires for coil and ferrite windings
  • PTFE insulating sleeves
Toroids and ferrites
  • Ferrite toroids
  • RF iron powder toroids
  • Multi-aperture ferrite cores
  • Ferrite rods
  • Ferrite beads and VK200
  • Other ferrite cores
  • Split core ferrites for cables
Accessories
  • Electronics enclosures
  • Microwave tuning elements
  • PTFE washers and spacers
  • Hex spacers / standoffs
  • Shielding finger-stock gaskets
  • Conductive gaskets
  • RF and microwave laminates
  • Printed circuit boards
  • Microwave absorbing materials
  • Tools and equipments
    • Trimmer adjustment tools
    • Crimp tools
    • Cable tools
  • Components kits

Transistors - BJT



More informations

Low power transistors replacement:

AT-41485 with AT-41486 --- BF224 with BF199 --- BFG19S with BFG97
BFG 134 with BFG135 different package --- BFG505X with BFP181 --- BFP81 and BFP93A with BFQ81
BFQ51 and BFQ51C with BFQ76 --- BFQ65 SOT-37 with BFQ66 SOT-173 --- BFQ69 SOT-37 with BFQ74 SOT-173
BFQ193 and BFR193 with BFG193 or BFP193 different package --- BFR95 with 2N5109
BFT12 with BFR134 --- BFT17 with 2SC1260 --- BFT66 with BFQ29P SMD version
BFT97 with BFR90A --- BFW16A with 2N 5109 --- MMBR 931LT1 with BFT 25
MRF9411 with MRF 9511 --- MRF517 and MRF525 with 2N5109 --- MRF580 and MRF580A with BFR 134
MRF901 = MMBR901 SMD or with BFP91A --- 2N6305 with BFX89 --- 2N6603 with BFP91A
2N6618 see HXTR6103 -- 2N6679 see HXTR2101 -- 2N6701 see HXTR5101
2N6741 see HXTR5103

  Complementary transistors couples NPN - PNP
NPN BF720 BFR96 BFG97 BFQ72 BFQ71 BFR91A BFR92 MRF571
(not available)
BCX54 BSR14
PNP BF721 BFQ32 BFG31
(not available)
BFQ75 BFQ76 BFQ23 BFT92 MRF536 BCX51 BSR16
IC (mA) 100 75 100 50 30 50 25 30 1000 600
fT 100 MHz 5 GHz 5 GHz 5 GHz 5 GHz 5 GHz 5 GHz 5 GHz 50 - 130 MHz 200 MHz
Warning! The shop is closed at the moment, order dispatching will restart from Monday 22 August 2022.
  • Grid
  • List

No products found
  • <
  • 1
  • 11
  • >
Showing 166 - 165 of 165 results

No products found
  • <
  • 1
  • 11
  • >
Showing 166 - 165 of 165 results

Best sellers

Bipolar NPN RF transistor, TO-18
National Semiconductor 2N2484
Silicon bipolar NPN RF transistor, TO-92
Texas Instruments 2N3707
Bipolar NPN RF transistor, SOT-223
Philips BFG35
Bipolar NPN RF transistor, SOT-223
NXP Semiconductors BFG97
Bipolar NPN RF transistor, SOT-89
NXP Semiconductors BFQ19
Silicon bipolar NPN RF transistor, SOT-37
Telefunken BFR90A
Bipolar NPN RF transistor, SOT-37
Philips BFR96S
Bipolar NPN RF transistor, SOT-37
Vishay BFR96TS
Silicon bipolar NPN RF transistor, TO-72
STMicroelectronics BFY90
logo

Microwave and RF components

Via Nazionale dei Giovi, 45B
20811 Cesano Maderno (MB)
Italy
Tel.: +39 0362 284992

Follow us

Quick menu

  • Electronic components
  • Connectors and adapters
  • Cables and wires
  • Toroids and ferrites
  • Accessories

Informations

  • About us
  • Selling conditions
  • FAQ
  • Privacy and Cookie Policy
©2022 Welco Srl - VAT no. IT11673650963
In compliance with the regulations imposed by the European Community on privacy and data protection (GDPR) we inform you that this web site uses the following cookies:
Technical cookies: essential for proper web site functionality
Preference cookies: optional, used to save some user browsing preferences
Statistics: optional, these are Google Analytics cookies for statistical purposes only
You can learn more about our policies at this page Cookies and Privacy policy
technical cookies preferences statistics