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IRF510 N Channel MOSFET IR and Intersil PN4117A N Channel JFET Fairchild FSC 2N4117 2SC1815-GR Toshiba NPN Transistor
1 piece of IRF510, I have both IR and Intersil brands.  Can be used as a clipping diode in guitar effects. 1 piece of PN4117A same as 2N4117A, MFG: Fairchild These are genuine NOS Toshiba 2SC1815-GR Audio Amplifier NPN transistors.  Hfe range is 200-400.  Get them while they last!  Price is for 2 pieces.
2SC1815-Y Toshiba NPN Transistor 2SA1015-Y Toshiba PNP Transistor 2SA1015-GR Toshiba PNP Transistor
These are genuine NOS Toshiba 2SC1815-Y Audio Amplifier NPN transistors.  Hfe range is 120-240.  Get them while they last!  Price is for 2 pieces. These are genuine NOS Toshiba 2SA1015-Y low noise Audio Amplifier PNP transistors.  Hfe range is 120-240.  Get them while they last!  Price is for 2 pieces. These are genuine NOS Toshiba 2SA1015-GR low noise Audio Amplifier PNP transistors.  Hfe range is 200-400.  Get them while they last!  Price is for 2 pieces.
BC109C CDIL NPN High Gain Audio Transistor TO-18 BC109B CDIL NPN High Gain Audio Transistor TO-18 BC108C CDIL NPN High Gain Audio Transistor TO-18
These are in tons of circuits!  They go very well in the muff circuit, too.  CDIL brand, BC109C in the TO-18 metal can.  This C version has hfe in the 450-900 range (most I've tested are 550-750). These are in tons of circuits!  They go very well in the muff circuit, too.  CDIL brand, BC109B in the TO-18 metal can.  This B version has hfe in the 240-500 range. These are in tons of circuits!  They go very well in the muff circuit, too.  CDIL brand, BC108C in the TO-18 metal can.  This C version has hfe in the 450-900 range.
BC107B CDIL NPN High Gain Audio Transistor TO-18 BC239C High Gain NPN Fuzz Silicon Transistor ITT BC550C High Gain NPN Fuzz Silicon Transistor
These are in tons of circuits!  They go very well in the muff circuit, too.  CDIL brand, BC107B in the TO-18 metal can.  This B version has hfe in the 240-500 range. These are used in tons of effects and work great in the Muff circuit.  Typical hfe is 450-600.  NOS made by ITT.  Get them while they last!  Price is for 1 piece. These are used in tons of effects and work great in the Muff circuit.  Typical hfe is around 600. Get them while they last!  Price is for 1 piece.
BC179 Audio PNP Fuzz Silicon Transistor Gold Leads Low Noise 2N2924 Low Noise NPN Transistor Harris VOX V806 Treble Booster NOS BC549C Ferranti High Gain NPN Fuzz Silicon Transistor
These are NOS in the TO-18 metal can with gold leads.  Typical hfe is 150-500.  Made in Europe in 1986, low noise, audio grade. Get them while they last!  Price is for 1 piece. 1 NOS 2N2924 low noise NPN transistor, the same as used in the VOX V806 treble booster pedal.  These are made by Harris, with an hFE of 150-300. These are used in tons of effects and work great in the Muff circuit.  Typical hfe is around 600.  Get them while they last!  Price is for 1 piece.  These are NOS and made by Ferranti, an older European manufacturer.  They are in a slightly modified TO-92 case, just a bit smaller than normal.
2SK118-GR High Gain N Channel JFET Genuine Toshiba 2SK118 BF245C N-Channel JFET Fairchild Original BF245 MPF102 Fairchild N Channel Audio JFET
1 piece of 2SK118-GR, MFG: Toshiba. The -GR has the highest gain (IDSS) 2.6-6.5 mA These are used in tons of effects.  These are original Fairchild FSC parts.  Get them while they last!  Price is for 1 piece. 1 piece of MPF102 N-Channel audio JFET made by Fairchild (FSC).  These are NOS and are used in so many effects.  Not sure if these are being made anymore, so get them while you can!
2N5457 N Channel JFET NS J201 Substitute 5 Pack BC548C High Gain NPN Fuzz Silicon Transistor 5 Pack BC549C High Gain NPN Fuzz Silicon Transistor
1 piece of 2N5457, MFG:  National Semiconductor. These are great subs for J201 These are used in tons of effects and work great in the Muff circuit.  Typical hfe is around 600.  Get them while they last!  Price is for 5 pieces. These are used in tons of effects and work great in the Muff circuit.  Typical hfe is around 600.  Get them while they last!  Price is for 5 pieces.
5 Pack BC547C High Gain NPN Fuzz Silicon Transistors J201 N-Channel JFET Fairchild Original TO-92 5 Pack BC183 TI High Gain NPN Fuzz Silicon Transistor Texas Instruments
These are used in tons of effects and work great in the Muff circuit.  Typical hfe is around 600.  Get them while they last!  Price is for 5 pieces. These are used in tons of effects.  These are original Fairchild FSC parts.  Get them while they last!  Price is for 1 piece. These are Texas Instruments brand, made in Germany in May of 1980 (I have the original mfg box).  These are used in tons of effects and work great in the Muff circuit.  Get them while they last!  Price is for 5 pieces.
BC107B TFK NPN High Gain Audio Transistor TO-18 BC239B High Gain NPN Fuzz Silicon Transistor TFK BS170 N Channel MOSFET Motorola Enhancement Mode
Here's a RARE one for you. These are in tons of circuits!  They go very well in the muff circuit, too.  Telefunken (TFK) brand, BC107B in the TO-18 metal can.  This B version has hfe in the 240-500 range. These are used in tons of effects and work great in the Muff circuit.  Typical hfe is 300-450.  NOS made by TFK (Telefunken).  Get them while they last!  Price is for 1 piece. 1 piece of BS170, MFG:  Motorola.  N-channel enhancement mode MOSFET used in many guitar pedals.
2SK30A-GR Toshiba N-Channel JFET Preamplifier Toshiba 2SK246BL 2SK246 Audio N Channel JFET Amplifier Toshiba 2SK184Y Audio N Channel JFET Amplifier
These are genuine NOS Toshiba 2SK30A-GR low noise audio preamplifier N-channel JFET transistors. IDSS range is 2.6-6.5.  Get them while they last!  Price is for 2 pieces. 1 Piece of Genuine NOS Toshiba 2SK246BL low noise audio N Channel JFET.  The BL version here has the highest IDSS in the 6-14mA range. 1 Piece of Genuine NOS Toshiba 2SK184Y low noise audio N Channel JFET.  The Y version here has an IDSS in the 1.2-3mA range.