ST422 ETC1
Document overview
- Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 2
Technical content
COMPRESSION MICA rests seirensrine -»c to *85°C. TRIMMERS AND prewar Qreater than the value indicated in the table. When the adjusting screw is al a tight position (with a being defined as 1 pound-inches). The maximum capacitance will be equal to or greater {i} paps A 14 than the value indicated in the table. - tar me — C- MINIMUM CAPACITANCE: Equal to, or - ~ mee “a — less than, the value indicated in the table. + + ae = --|--4-- When the adjusting screw is rotated 3 =4 +i i turns from tight position, the maximum —_— }.) a ur a ee Oe capacitance will be equal to or less than | - = 2 Sees the value indicated in the table. ff. 6: y - a OC VOLTAGE: Rated Voltage Test Voltaps ~. ie - Type 30 20 $00 by” Types 40, 42, 45 1s 350 ese Dy + Type 308 oe 1000 4 ee INSULATION RESISTANCE at 25°C: . Py, Eig Pie. 100,000 meg-ohms minimum. pes | sie? ay, F Q at 1 MHz: See Q curve, Figure 1. ‘ie et | = Pierre | i] fag ee t+ Ln Pn re we beet TT ee ee es 4 = oo ee ae % mee || ~w LO as ’ " we woo ee | canetrance wt pt DISSIPATION FACTOR at 1 kHz: > 1000 pF Max; D.F. . 004 max. CAPACITANCE CHANGE WITH TEM- PERATURE at Working Point”: TYPE 30: = + (2.5% + D3 BF) STANDARD TRIMMERS ; TYPE 40, 42, 46: = = (1.5% + 0.3 pF) These variable compression mica trimming capacitors are CAPACITANCE DRIFT WITH TEMPER- produced by stacking mica dielectric capacitance units. ATURE at Working Point*: A capacitor section consists of a thin flim of mica between TYPE 30; = + (2.0% + 0.5 pF) two spring loaded nonferrous metal conducting plates; the TYPE 40, 42, 46: = + (1.5% +0.5 pF) stacked units are mounted within a ceramic container, or * Screw adjusted to M4 to % turn from on a ceramic base. By alternating metal plate, mica film, tight. jus metal plate, etc., land paralleling these units, any desired * base CS Sarees: Rpanhwead a ese (92-64, can . screw ' UNS-2) thread for types 40 and 42 and a aes, UNE TYPE DESIGNATION thread for type 46 fe Inweried through the center holea e ST _0423 the plates, the mica films, and the jaded bushing. This FT 2 Screw provides verieble compression on the formed metal 1) Mounting Style plates, varying the plate separation capacitance. ST — Standard Bracket Mounting Anco trimming onpactors are treated for resistance to Style humidity and for permanence of capacity setting. PC — Printed Cireult Mounting The base is made of the lowest loss ceramic dielectric Style avallable and the mica is clear india Ruby. C — Variation of Printed Circuit The soldering lugs may be bent in any position without Mounting Styte affecting the capacitance setting. 2) Indicates shape, construction, Trimmers shown are standard sizes and capacities. dimensions and capacitance. Standard dimensional adjustment tolerance is + 1/32" or + 3%", whichever is ible. Terminals having several lugs can be together to prevent separation and faring. ' Ako | — — SSE * |
NOTE: Alt dimensions in inches. Trimmers Type 40 — MINIATURE TRIMMER _ ST40 | Voltage 35¢ VCCT — 175 VOCW nando! eat ‘At Tight Cap. ALS Tune aru! wm | SES oe gucci 5 iz 3 ¥ toe ae Type42 — MIDGET TRIMMER = Voltage 380 VOCT — 175 VOCW $742 at Cap. A138 Ture p—pe ask ES mere 1, ant a as ‘ —t4t 422 40 7 —— a 10 6 (Ponsa pene ’ _ a7 30 75 7 FS Ss 3 Ta Me 4210 #2 138 | Ho wary ee Fa is Litas ee av 92 = b—F— neue sppemmsnesaser eee Type 48 — STANDARD TRIMMER Voltage 350 VOCT — 175 VOCW i ST46 ‘At Tight Cap, ‘At 3 Tus 1 7 “| 7 3 7 ey “ n 5 Pr wo 3 pone ween a 250 “ Hvar.e ramus pons “ 72 cid — / Prd 00 1% . eu 1009 00 or ae t # | gs 8 a aT See al fs ie Fa ee a eeSSSSSSSSSSSSSSSSSSSSSS— Alt — — 26