HISTORY:
This component has been pulled from a wonderful piece of test equipment made by KEITHLEY (USA), the 642 Electrometer. This equipment is from the 1980's ~ 1990's era, technically advanced (for the day) and designed to measure voltage, current and charge to extremely low levels (see one of the snapshot photographs from the User Manual)
Why "part out" such an instrument? I have decided to make this equipment an "organ donor" because a critical component is no longer with me, the remote head! To make measurements a wired head is required and without that, the instrument had no sensing abilities.
COMPONENT MANUFACTURER:
STK Electronics (USA) are a capacitor manufacturer, now part Pelco Component Technologies (USA) and they continue to produce a range of high quality film capacitors.
This capacitor (USED) is circa 1980's, not a recently manufactured component.
STK ELECTRONICS (USA) - Metallised Polyester Film Capacitor
Type: MM370 Series
Value: 0.1uF
Voltage: 600V
Tolerance: +/- 10%
White tape wrap, end plugs are epoxy filled
Circa 1980's (pull from the Keithley 642)
Body of the capacitor is printed (in Black) ...
9347
STK
MM370
.1uF
600V
+-10%
117-0136
Axial leads
Lead length is 20mm either side , 0.60mm diameter tinned copper wire
DIMENSIONS:
19.25mm length x 8.8mm height x 6.6mm thick
TESTING:
Being a USED device of some age, I made a quick test of this capacitor
Value: 101nF (0.101uF)
ESR: unmeasureable
Loss: 0%
Well within the 10% tolerance specifications, closer to a 1% tolerance cap!
