Thomas Martin, DF7TV, Stuttgart, Germany.

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K2 Semiconductor Data Sheets

Here are some links to data sheets of semiconductors. The table contains most of the semiconductors used in the Elecraft K2 transceiver, its options and modifications but is not limited to those. Additionally data sheets of most of the semiconductors used in the Elecraft Transverters, the K1 transceiver, the KX1 transceiver and in the Mini-Module kits may be found here.

All data sheets are in Portable Document Format (PDF). If you want to download a data sheet just click onto the according link using the right mouse button and select your destination for the file.

NOTE1: To get data sheets for processors made by Microchip Technology Inc (PIC...) please use the link to their Data Sheet Finder[1] shown at the bottom of this page.

NOTE2: Please send me an e-mail if a link is broken, if you would like a semiconductor to be added or if you know better links than those provided here.


1N191 Point Contact Germanium Diode
1N34A Point Contact Germanium Diode
1N4003 General Purpose Rectifier
1N4007 General Purpose Rectifier
1N4148 High-Speed Switching Diode
1N4753 Silicon Zener Diode; V_Z=36V
1N5231B Silicon Zener Diode; V_Z=5,1V
1N5235B Silicon Zener Diode; V_Z=6,8V
1N5404 General Purpose Rectifier
1N5711 Small Signal Schottky Diode
1N5817 Low Drop Power Schottky Rectifier
1N5821 Low Drop Power Schottky Rectifier
1SV149 Voltage Variable Capacitance Diode
25LC320 32k EEPROM, I2C
2N2222 NPN Switching Transistor
2N2222A NPN Switching Transistor
2N3904 NPN General Purpose Transistor
2N3906 PNP General Purpose Transistor
2N4124 NPN General Purpose Transistor
2N5109 (Microsemi) NPN Silicon RF Transistor
2N5109 (STI) NPN Silicon RF Transistor
2N7000 N-Channel Enhancement Mode Field Effect Transistor
2SC1969 NPN Silicon RF Power Transistor (HF, 10W)
2SC2133 NPN Silicon RF Power Transistor (VHF, 10W)
2SC2166 NPN Silicon RF Power Transistor (HF, 3W)
2SC2290 NPN Silicon RF Power Transistor (HF, 60W)
2SC2879 NPN Silicon RF Power Transistor (HF, 100W)
5082-3081 PIN Diode for RF Switching and Attenuating
74HC74 (Texas Instruments) Dual D-Type Positive-Edge-Triggered Flip-Flops (HC74)
74HC165N Parallel-in/Serial-out 8-Bit Shift Register
7805 1A Positive Voltage Regulator; V_OUT=5V
78L05 0,1A Positive Voltage Regulator; V_OUT=5V
78L06 0,1A Positive Voltage Regulator; V_OUT=6V
78L06AWC 0,1A Positive Voltage Regulator; V_OUT=6V
78L09A 0,1A Positive Voltage Regulator; V_OUT=9V
78M05 0,5A Positive Voltage Regulator; V_OUT=5V
95SQ015 Schottky Rectifier; ultra low forward voltage drop
AD8307 Logarithmic Amplifier DC-500 MHz, 92 dB
AD9834 Low Power DDS; 10-bit DAC
ARF463A RF Power MOSFET
ARF463B RF Power MOSFET
ATF34143 Low Noise PHEMT; for Low Noise Amplifiers
ATMEGA8L Processor (Atmel)
BAT41 Schottky Barrier Diode
BAT85 Schottky Barrier Diode
BC557 (Philips) PNP General Purpose Transistor
BFR96 (MOT) NPN Silicon High-Frequency Transistor
BS170 N-Channel Enhancement Mode Field Effect Transistor
EL5146C Op Amp, 100MHz, Single Supply
ERA-5 Monolithic Amplifier; Z=50 Ohm
ERA-6 Monolithic Amplifier; Z=50 Ohm
FST3253 (Fairchild) Dual 4:1 Multiplexer/Demultiplexer Bus Switch
GTL2002 (NXP) 2-bit bidirectional low voltage translator
IRF830 Power MOSFET
IRL620 Power MOSFET
J309 N-Channel RF Amplifier FET
J310 N-Channel RF Amplifier FET
LM2930T-8 3-Terminal Positive Regulator; V_OUT=8V
LM340T-5 3-Terminal Positive Regulator; V_OUT=5V
LM348 Quad Operational Amplifier
LM358 Dual Operational Amplifier
LM380N-8 2.5W Audio Power Amplifier
LM386N-1 Low Voltage Audio Power Amplifier
LM393 Dual Differential Comparator
LM567 Tone Decoder
LM83 Digital Temperature Sensor
LM833N Dual Audio Operational Amplifier
LM837N Low Noise Quad Operational Amplifier
LMC567 Low Power Tone Decoder
LMC6482AIN CMOS Dual Operational Amplifier
LMC660 CMOS Quad Operational Amplifier
LMC662 CMOS Dual Operational Amplifier
LP2992 Low Noise Ultra Low-Dropout Voltage Regulator (250 mA)
LT1039 RS232 Driver/Receiver
LT1252 Low Cost Video Amplifier
LTC1451 12-Bit Micropower DAC
LT6231 215MHz, Rail-to-Rail Output OpAmp
M57735 RF Power Module (50MHz)
MAX518 2-Wire Serial 8-Bit DAC
MAX522 Dual, 8-Bit, Voltage-Output Serial DAC
MAX534 Low-Power, 8-Bit Quad DAC
MAX1406CPE 3-Tx/3-Rx RS-232 IC
MAX4489 Low-Distortion, Wide-Band Op Amps
MAR-3 Monolithic Amplifier; Z=50 Ohm
MAR-6 Monolithic Amplifier; Z=50 Ohm
MC1350P Monolithic IF Amplifier
MC145170P2 PLL Frequency Synthesizer with Serial Interface
MC7805ACT (On Semic.) 1A Positive Voltage Regulator, V_OUT = 5V
MC78L05ACP (On Semic.) 0,1A Positive Voltage Regulator, V_OUT = 5V
MIC5891 (Micrel) 8-Bit Serial-Input Latched Source Driver
MJE182 NPN Silicon Transistor
MPSA14 NPN Darlington Transistor
MPS918 NPN Silicon Transistor
MPS5179 NPN Silicon High-Frequency Transistor
MV209 Voltage Variable Capacitance Diode
NE602 Double-balanced Mixer and Oscillator
NE612 Double-balanced Mixer and Oscillator
NJU6355ED Serial I/O Real Time Clock
PCF8566 Universal LCD driver for low multiplex rates
PIC... Please use the Microchip Data Sheet Finder[1]; link shown below
PN2222A NPN General Purpose Transistor
RA30H1317M MOSFET RF Power Module
RA30H2127M MOSFET RF Power Module
RD16HHF1 Silicon MOSFET Power Transistor 30MHz,16W
SA602AN Double-balanced Mixer and Oscillator
SA612AN Double-balanced Mixer and Oscillator
SB530 Schottky Barrier Rectifier
SD101A Small Signal Schottky Barrier Diode
SD1405 NPN Silicon RF Power Transistor
SD1487 NPN Silicon RF Power Transistor
SGA-7489 DC-3000 MHz Cascadable Gain Block
SI570 Any-rate I2C Programmable XO/VCXO (10 to 945 MHz)
SN74HC74 (Texas Instruments) Dual D-Type Positive-Edge-Triggered Flip-Flops (HC74)
SSM2165-1 Microphone Preamplifier, variable Compression
TD62083 8ch Darlington Sink Driver (Toshiba)
TLV2462 (Texas Inst.) Low Power Rail-to-Rail OP Amp
TPIC6595 (Texas Inst.) 8-Bit Shift Register
UCN5891A (Allegro) 8-Bit Serial-Input Latched Source Drivers
ULN2003 Seven Darlington Transistors Array
ULN2803 Eight Darlington Transistors Array
ZR78L06C Fixed Positive Voltage Regulator; V_OUT=6V/2,5%
ZSR600C Fixed Positive Voltage Regulator; V_OUT=6V/2,5%
ZTX789A PNP Silicon High Gain Transistor
ZVN4424A N-Channel Enhancement Mode DMOS FET
ZVN4424G N-Channel Enhancement Mode DMOS FET
ZVN4424Z N-Channel Enhancement Mode DMOS FET
ZVP2106G P-Channel Enhancement Mode DMOS FET
ZXRE125 Micropower 1,22V Voltage Reference

Note: Some devices have the same data sheet in common. Either these belong to a family of similar devices which all are described in a single data sheet or the same device is available with different names. Such devices are listed within one row of the following table.

1N4001 to 1N4007 1N4007
1N5231B 1N5235B
2N2222 2N2222A
74HC74 SN74HC74
78L06 78L06AWC
ARF463A ARF463B
ERA-5 ERA-6
MAR-3 MAR-6
NE602 SA602AN
NE612 SA612AN

Modified: May 10, 2010.
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[1] Microchip PICmicro Microcontrollers Data Sheet Finder