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-Type '''980-D  0.001uf Decade Capacitor Unit'''.
+{{GR Product
+|model=980-D
+|codes=ALIEN
+|class=capacitance standards
+|summary=Decade Capacitor Unit
+|image=GR 980-D Front.JPG
+|caption=General Radio 980-D Decade Capacitor Unit
+|series=980
+|introduced=1959
+|discontinued=1965
+|designers=
+|manuals=
+* '''Manual Needed.'''
+{{Catalog History}}
+}}
+The {{Title|General Radio 980-D Decade Capacitor Unit}} was introduced in {{Catalog P}} and remained available through {{Catalog S}}.
+The Type 980-D is a decade capacitance unit comprising four polystyrene capacitors sealed in a brass tub. The capacitor values are selected in a "1-2-2-5" combination. In the Type 980-D these values are 0.0001, 0.0002, 0.0002, and 0.0005 μF.  The eleven position
+switch maintains a combination of the four standard capacitors in parallel to produce the decade of capacitance values. The Type 980-D
+decade unit is used in the Type [[1419-B]] Decade Capacitor.
 ==Specifications==
+* '''Total Capacitance:''' .001 μF
+* '''Capacitance Per Step:''' .0001 μF
+* '''Accuracy:''' two terminal ±(1% + 2 pF), three terminal ±1% -(2% + 4 pF)
+* '''Dissipation Factor:''' less than .0002 at 1 kHz
+* '''Maximum Voltage:''' 500 V
+* '''Frequency Limit for Maximum Voltage:''' 10 MHz
+* '''Dielectric:''' Polystyrene
 ==Links==
+* [[Media:GR Exp 980 1419-A 07_1956.pdf|Experimenter July 1956 describing Types 980 and 1419-A]]
+* [[Media:GR Exp 980 Series 1457-K 10_1957.pdf|Experimenter October 1957 describing Type 980 and 1419-K]]
 ==Photos==
 <gallery>
+GR 1419-B 980-D Inside.jpg
+GR 1419-B 980-D Left.jpg
+GR 1419-B 980-D Right.jpg
+GR 1419-B 980-D Top.jpg
 </gallery>
 [[Category:Capacitance Standards]]