Kai-Martin Knaak

Kai-Martin Knaak
email: kmk@familieknaak.de

General remarks

The catalog of symbols and footprints presented here is self consistent. That is, the default footprint attribute of a symbol points to one of the footprints given in the footprint section.

Symbols

The symbols in this sections are designed according to the following design criteria:
  1. they contain a default footprint attribute.
  2. the footprint attribute is visible on the schematic and printed with a smaller font size than the refdes and the value of the symbol.
  3. they contain a human readable description
  4. power pins of integrated circuits are split off to a seperate power symbol
  5. pin numbers are hidden, if they obeye a generally accepted standard

Note: All my symbols are licensed GPL 2 or GPL 3 for distribution, and unlimited for use. See http://www.gnu.org/licenses.gpl.txt for the details

Title Blocks

These title blocks have attributes for date, author, project name and page number attached.

Analog

Generic Analog

Diodes

  • dus.sym - garden variety silicon diode, value preset to 1N4001
  • flyback_SOT23.sym - A pair of schottky diodes for flyback protection in SOT23, e.g. BAT64-04
  • laserdiode.sym - three pin laser diode
  • led_3mm.sym - LED, thru hole, 3mm diameter
  • led_SMD.sym - LED, SMD footprint, 1210.fp
  • photodiode.sym - garden variety photo diode, value preset to BPW34
  • photodiode_TO18.sym - three pin photo diode, value preset to S5972
  • schottky_SMD.sym - schottky diode, SMD minimelf, value preset to LL4148
  • zener_SMD.sym - zener diode, SMD minimelf, value preset to BZV55-Cxx
  • zener_thru - zener diode, thru hole, value preset to ZPY-xx

    • Transistors

  • npn.sym - npn transistor
  • pnp.sym - pnp transistor
  • njfet.sym
  • nmosfet.sym - NMOSFET
  • nmosfet_power.sym
  • pmosfet.sym - PMOSFET
  • pmosfet_power.sym
  • pmosfet.sym

    • Opamps and Comparators

    Regulators

    Special Analog

    Digital

    I don't do much digital electronics except for some basic 74xxx components...

    Connectors

    power symbols

    Misc

    block

    These are blocks of subcircuits I frequently use. They contain some of the above symbols. See the wiki for details. Preview does not work correctly because there is no way for gschem running on the geda-symbols server to find the symbols contained in the blocks.

    Footprints

    Note: All my footprints are licensed GPL3 for distribution, and unlimited for use. See http://www.gnu.org/licenses.gpl.txt for the details

    generic SMD

    These footprints are meant to supersede the ones from the default library. They are designed to meet the requirement of densely populated boards with too little space outside the elements to place the refdes or value. Pad size is sufficient to hand solder the parts.

    Connectors

    Discrete components

    Mechanical

    Misc

    Specific

    Switch

    Changelog

    19/May/2008

    1. more telling names for digital 74xxx symbols.
    2. new symbols 7400_4xNAND.sym, 7402_4xNOR.sym, 7432_4x_OR.sym
    3. removed 74128.sym - This component is depreciated

    9/May/2008

    1. Moved opamp_*_2.sym to opamp_*.sym. I decided, not to put version strings in the name of a symbol. Components should be embedded, when a a schematic is regarded as finished.
    2. new symbol 7414.sym (6xNOT)
    3. shorter pins to led_3mm.sym --> Note, this breaks existing schematics.
    4. clean-up license of relay-AXICON_FP2.sym
    5. add symbol flyback_SOT23.sym (A pair of schottky diodes for flyback protection)

    7/May/2008

    1. Shorter pins in comparator_quad.sym and comparator_quad_b.sym.
    2. Short pin versions of opamp.sym, opamp_quad.sym and opamp_offset.sym. These are called opamp_2.sym, opamp_quad_2.sym and opamp_offset_2.sym.
    3. New directory "old" with the long pin versions of opamps and comparators, so old schematics still find them.

    7/May/2008

    Shorter pins in comparator_dual.sym and opamp_dual.sym,to allow for more flexibility in schematics. Note: This likely breaks schematics, that use the previous version.

    28/Apr/2008

    1. increased polygon clearence of a couple of SMD components. Now, polygon clearence is twice the size of solder mask clearence.
    2. increased mask clearence of cap_RM5.fp, cap_RM275.fp, res_RM20.fp and JMP_*Pin.fp
    3. decreased mask clearence of

    19/Apr/2008

    1. unified and corrected diode footprints (dio_1206.fp and dio_1210.fp)
    2. removed footprint dio_0805.fp
    3. add zener_SMD.sym
    4. add diodes to symbol index
    5. unified pin numbers and pin labels of diodes.

    7/Apr/2008

    1. renamed 0805_dio.fp to dio_0805.fp to conform with the names of the other footprints
    2. correctetd the silk of dio_1210.fp and dio_1206.fp

    4/Apr/2008

    1. clean-up and update of TOxxx footprints: Centroid in the center, named pins
    2. add worksheet TOXXX.pcb

    1/Apr/2008

    1/Apr/2008

    * clean-up and update of 74xxx symbols
    * add footprint for 19" box: BOX_DAUB_MGF44061.fp * add worksheet for boxes made by Daub: BOX_DAUB.pcb * removed multiple GND pins in 78L12.sym and 78L15.sym
    * Graphics polishing 7805.sym, 7812.sym, 7815.sym, 7905.sym, 7912.sym, 7915.sym

    31/Mar/2008

    1. new symbols for generic quad opamp and for quad comparator
    2. centered handle of 0805.fp
    3. larger pads and centered handle for 1206.fp
    4. larger pads and centered handle for 1812.fp
    5. new footprint dio_1206.fp
    6. removed redundant 74_16pin_pwr.sym
    7. graphical improvements to *_pwr.sym
    8. new footprints 1210.fp and dio_1210.fp
    9. new symbol comparator_quad_b.sym for alternative opin-out

    19/Mar/2008

    * new footprints ELEDIS_2B11, ELEDIS_2B11_LAY and MULTICOMP_2AS for small switches
    * added a pcb working sheet for all the switches (switch.pcb)

    13/Mar/2008

    fixed 78L05 and 79L05: dedicated footprint instead of coinciding pins.

    6/Mar/2008

    Another clean-up. Added dist-licence and use-license attributes to the following files:
    L165-2.sym L165_pwr-1.sym LM317.sym LM337.sym lm399.sym njfet.sym nmosfet.sym nmosfet_power.sym npn.sym opamp_dual_pwr.sym opamp_offset.sym opamp_pwr.sym phase_detector_HMC439QS16G.sym pmosfet.sym pmosfet_power.sym pnp.sym poti_Alps_RK11K112.sym poti_thru.sym res0805.sym res_SMD.sym res_SMD_vert.sym res_ref.sym res_thru.sym

    removed LM137 (typo of "LM317")

    5/Mar/2008

    * modified opamp_pwr, opamp.sym --> Add license
    * modified 7805 --> Add pinlabel and pinname attributes
    * modified 78L05 --> correct foot print (SO8)
    * added 78L15, 78L12
    * modified comparator*.sym --> spurious slot defs
    * modified instr_amp_INA128.sym --> off grid pins, general clean-up, pins moved (!)
    * modified L165-1.sym --> general cleanup, pins moved (!)
    * modiified L165-2.sym --> corrected footprint value
    * removed lm311_orig.sym
    * modified ntc.sym --> clean-up

    25/Feb/2008

    * modified XLR-78xx-79xx.sym --> Add safety diodes
    * added BNC_LAY2.fp --> like BNC_LAY but van be mounted vertically too
    * added BNC_STAND.fp --> Telegärtner socket to be mounted vertically

    Jan/2008

    * corrected RELAY_FP2.fp


    Copyright 2008, all rights reserved unless specified otherwise.
    gedasymbols.org is maintained by DJ Delorie