BF245 - the legend is leaving, the successor comes

BF245, a JFET transistor produced for many decades by several companies, has joined the list of discontinued components. However an equivalent replacement exists in an SMT package and its name is BF545.

This is an archive article published 02.10.2012. Some information may no longer be up to date and in line with the current state. Please contact us in case of interest.
BF245 in a TO-92 package has been one of the first transistors, which were mass-used. That´s why it´s no wonder, that the BF 245 is nowadays familiar to every experienced technician. As a transistor with a very high input resistance (tens of MOhm) and a relativlely low noise, it´s gained a global popularity and served to many beginning technicians at an assembly of their first radio-receivers. There are many other FET transistors on the market nowadays, thus the usage of BF245 is substantially smaller. Moreover, a majority of electronics is produced with SMT components, what probably was one of more reasons why all main producers have discontinued the BF245.
However, BF245 is still an interesting transistor, that´s why it will be henceforward available in a SOT23 SMT package as the BF545. It is available in 3 groups A, B, C - sorted according to IDSS at VGS=0. Directly from our stock are available BF545A, BF545B and BF545C from company NXP (originally Philips). Detailed information can be found in the BF545 datasheet, as well as in the RF Manual document.

In case of interest, please contact us at info@soselectronic.com.

Advantages / Features:

  • high input impedance and gain
  • low cut-off voltage
  • low leakage current (fA)
  • suitable for impedance converters and VHF circuits

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Additional products

image type / kind / description Ord.number manufacturer in stock External stock price/pc excl. VAT
BF 245 A NXP BF 245 A

Transistor JFET N-Ch. 25mA/30V TO92

Field-effect transistors low-power

Alternative components: BF 545 A

13876
N

NXP

No longer available
BF 245 B NXP BF 245 B

Transistor JFET N-Ch. 25mA/30V TO92

Field-effect transistors low-power

Alternative components: BF 545 B

13877
N

NXP

No longer available
BF 245 C NXP BF 245 C

Transistor JFET N-Ch. 25mA/30V TO92

Field-effect transistors low-power

Alternative components: BF 545 C

13878
N

NXP

No longer available
BF 545 A NXP BF 545 A

Transistor JFET N-Ch. 25mA/30V SOT23

More info: BF545A_BF545B_BF545C...

Field-effect transistors low-power

126298
S

NXP

in stock 68 pcs
-

5 pcs+ 0,3980 €

10 pcs+ 0,3220 €

100 pcs+ 0,2810 €

500 pcs+ 0,2460 €

1000 pcs+ 0,2380 €

  • ADD TO CART
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BF 545 B NXP BF 545 B

Transistor JFET N-Ch. 25mA/30V SOT23

More info: BF545A_BF545B_BF545C...

Field-effect transistors low-power

126300
S

NXP

in stock 900 pcs
(20.10.2017: 500 pcs)
-

10 pcs+ 0,2720 €

20 pcs+ 0,2630 €

100 pcs+ 0,2380 €

500 pcs+ 0,2080 €

1000 pcs+ 0,2010 €

  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
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BF 545 C NXP BF 545 C

Transistor JFET N-Ch. 25mA/30V SOT23

More info: BF545A_BF545B_BF545C...

Field-effect transistors low-power

126302
S

NXP

in stock 110 pcs
-

10 pcs+ 0,2830 €

20 pcs+ 0,2740 €

100 pcs+ 0,2470 €

500 pcs+ 0,2160 €

1000 pcs+ 0,2090 €

  • ADD TO CART
  • Get Quote
  • Add to favorites
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BF 245 A NXP  
BF 245 A

Transistor JFET N-Ch. 25mA/30V TO92

Field-effect transistors low-power

Ord. No.: 13876
Manufacturer: NXP
No longer available

BF 245 B NXP  
BF 245 B

Transistor JFET N-Ch. 25mA/30V TO92

Field-effect transistors low-power

Ord. No.: 13877
Manufacturer: NXP
No longer available

BF 245 C NXP  
BF 245 C

Transistor JFET N-Ch. 25mA/30V TO92

Field-effect transistors low-power

Ord. No.: 13878
Manufacturer: NXP
No longer available

BF 545 A NXP  
BF 545 A

Transistor JFET N-Ch. 25mA/30V SOT23

Field-effect transistors low-power

Ord. No.: 126298
Manufacturer: NXP
in stock 68 pcs
5 pcs+
10 pcs+
100 pcs+
500 pcs+
1000 pcs+
0,3980 €
0,3220 €
0,2810 €
0,2460 €
0,2380 €
  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
  • Add item to compare

BF 545 B NXP  
BF 545 B

Transistor JFET N-Ch. 25mA/30V SOT23

Field-effect transistors low-power

Ord. No.: 126300
Manufacturer: NXP
in stock 900 pcs
(20.10.2017: 500 pcs)
10 pcs+
20 pcs+
100 pcs+
500 pcs+
1000 pcs+
0,2720 €
0,2630 €
0,2380 €
0,2080 €
0,2010 €
  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
  • Add item to compare

BF 545 C NXP  
BF 545 C

Transistor JFET N-Ch. 25mA/30V SOT23

Field-effect transistors low-power

Ord. No.: 126302
Manufacturer: NXP
in stock 110 pcs
10 pcs+
20 pcs+
100 pcs+
500 pcs+
1000 pcs+
0,2830 €
0,2740 €
0,2470 €
0,2160 €
0,2090 €
  • ADD TO CART
  • Get Quote
  • Add to favorites
  • Add to watchdog
  • Add item to compare
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