3852A-282-103AL_09 BOURNS | Alldatasheet
Document overview
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Technical content
Features
■ Single-turn (3851 and 3852) ■ Linear and audio tapers ■ Wide resistance range ■ Minimal depth package ■ Good resolution *RoHS COMPLIANT
Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. 3851/3852/3856 - 3/4 ” Diameter Panel Control DIMENSIONS ARE: MM (INCHES) 9.53 (.38) 3/8-32 UNEF 3851A/3852A 3851B/3852B 19.05 (.75) DIA. 3/8-32 UNEF 1/4-32 UNEF 3851C/3852C 1/4-32 UNEF 3851E/3852E 3/8-32 UNEF 3856A 3/8-32 UNEF. 3856H 6.35 (.25) 2.79 (.110) 3 PLCS. 14.02 ± .25 (.552 ± .010) Terminal Configuration SOLDER LUG TERMINAL 13 2 13 2 SUGGESTED BOARD LAYOUT STANDARD PRINTED CIRCUIT TERMINAL 3851/3852/3856 A, B & H BUSHINGS Shaft End Detail
3850 Family
50 ° ± 10 ° 6.35 ± .76 (.25 ± .03) .38 (.015) 19.05 (.75) DIA. 12.7, 22.23 (1/2, 7/8) 45 ° X (.010) CHAMFER .25 DIA.6.35+.03/-.05 (.250+.001/-.002) SHAFT SLOT 1.19 WIDE X.047 1.60+.38/.00 (.063+.015/-.000) 12.19 (.480) DIA. DEEP OPTIONAL FLAT LONG OR FRONT BUSHING FOR SHAFTS UNDER 5.49 (.216) 16.00 (.63) 1.52 (.06) 28.58 (1-1/8) OPTIONAL FLAT LONG OR FRONT BUSHING FOR SHAFTS UNDER .25 (.010)1.52 (.06) 15.88 (5/8) 12.7 (.50) 6.35 ± .76 (.25 ± .03) .38 (.015) 15.88 (5/8) 45 ° X (.010) CHAMFER .25 DIA.6.35+.03/-.05 (.250+.001/-.002) DIA.12.19 (.48) DEEP SHAFT SLOT 1.19 WIDE X(.047) 1.60+.38/-.00 (.063+.015/-.000) TYP. 12.7 (.50) 2 PLCS. EACH TERMINAL LUG WILL ACCOMMODATE THREE .81 DIAMETER (.812 DIA. AWG STRANDED) WIRES. (.032) 6.35 (.25) TYP. 15.88 ± .38 (.625 ± .015) 1.02 (.040) TYP. 6.35 (.25) 6.35 (.25) 6.35 (.25) 1.40 (.055) DIA. 9.53 (.375) 10.31 (.406) DIA. 3.18 (.125) DIA. 9.53 (.375) 6.73 (.265) DIA. 3.18 (.125)DIA. TOLERANCES EXCEPT AS NOTED: DECIMALS: .XXX ± .127 .XX ± .38 FRACTIONS: ± 1/64 ANGLE: ± 3 % (.005), (.015) 6.35 ± .76 (.25 ± .03) 6.35 (.25) 9.53, 22.23 (3/8, 7/8) .38 (.015) 45 ° X (.010) CHAMFER .25 45 ° X (.010) CHAMFER .25 3.18 ± 0.25 (.125 ± .001) DIA. SHAFT SLOT .79 WIDE X .76 DEEP (.031) (.03) 9.53 (.38) 12.7 (1/2) .38 (.015) 19.05 (.75) DIA. DIA.12.19 (.480) 3.18 ± .025 (.125 ± .001) DIA. SHAFT SLOT .79 WIDE X .76 DEEP(.03) (.031) 6.35 ± .76 (.25 ± .03) .38 (.015) 9.53 (.38) 12.7 (.50) DIA.6.35+.03/-.05 (.250+.001/-.002) 1.19 (.047) 45 ° X (.010) CHAMFER .2512.19 (.480) DIA. 1.60+3.81/-.000 (.063+.015/-.000) DIA. 22.23 (7/8) STD. 45 ° X (.010) CHAMFER .25 22.23 (7/8) STD. 12.19 (.480) DIA. 19.05 (.75) DIA. 19.05 (.75) DIA. 6.35 ± .76 (.25 ± .03) 12.7 (.50)9.53 (.38) .38 (.250 ± .03) .79 (.031) 3.18 ± .03 (.125 ± .003) DIA. STD.STD. 6.35 ± .76 (.25 ± .03) 19.05 (.75) DIA. DIA.12.19 (.480) STD. STD. .79 ± .25 (.031 ± .010) 2.36 (.094) 50 ° ± 10 ° Product Dimensions 1 3 CCW POTENTIOMETER
Specifications are subject to change without notice. Customers should verify actual device performance in their specific applications. SHAFT TYPE AVAILABLE ONLY IN (FMS) & DIAMETER MODELS BUSHINGS 12 3/8 ” (9.53 mm) L X 1/8 ” (3.18 mm) D 3851, 3852 C 16 1/2 ” (12.7 mm) L x 1/4 ” (6.35 mm) D 3851, 3852 A 16 1/2 ” (12.7 mm) L x 1/8 ” (3.18 mm) D 3851, 3852 C, E 20 5/8 ” (15.88 mm) L X 1/4 ” (6.35 mm) D 3851, 3852 A, B 28 7/8 ” (22.20 mm) L X 1/4 ” (6.35 mm) D 3851, 3852 A, B 3856 A 3851, 3852 C, E 28 7/8 ” (22.20 mm) L X 1/8 ” (3.18 mm) D 3856 H BUSHING APPLICABLE MODELS A Plain 3/8 ” (9.53 mm) D x 3/8 ” (9.53 mm) L 3851, 3852, 3856 B Locking 3/8 ” (9.53 mm) D x 1/2 ” (12.7 mm) L 3851, 3852 C Plain 1/4 ” (6.35 mm) D x 1/4 ” (6.35 mm) L 3851, 3852 E Locking 1/4 ” (6.35 mm) D x 1/2 ” (12.7 mm) L 3851, 3852 H Plain 3/8 ” (9.53 mm) D x 3/8 ” (9.53 mm) L 3856 (3.18 mm D Shaft) Consult factory for lengths not shown. MODEL 3851 3/4 ” (19.05 mm) D Single-Turn C.P. 3852 3/4 ” (19.05 mm) D Single-Turn Cermet 3856 3/4 ” (19.05 mm) D 3-3/4-Turn Cermet TERMINAL STYLE AND SHAFT TYPE
1 Solder Lugs, Plain End
2 Solder Lugs, Slotted End
3 Solder Lugs, Flatted Shaft
5 PC Pins, Plain End
6 PC Pins, Slotted End
7 PC Pins, Flatted Shaft
ELEMENT APPLICABLE MODELSTAPER/TOLERANCE A Linear ±10 % 3852, 3856 B Linear ±20 % 3851 C Audio CW ±10 % 3852, 3856 D Audio CW ±20 % 3851 E Linear ±10 % 3851 F Audio CCW ±10 % 3852, 3856 G Audio CCW ±20 % 3851 H Linear ±5 % 3852, 3856 RESISTANCE CODE/VALUE (IN OHMS) Model 3851 (102) 1 K (252) 2.5 K (502) 5 K (103) 10 K (253) 25 K (503) 50 K (104) 100 K (254) 250 K (504) 500 K (105) 1 M Models 3852/3856 (101) 100 (251) 250 (501) 500 (102) 1 K (252) 2.5 K (502) 5 K (103) 10 K (253) 25 K (503) 50 K (104) 100 K (254) 250 K (504) 500 K (105) 1 M How To Order 3851/3852/3856 - 3/4 ” Diameter Panel Control Boldface features are Bourns standard options. All others are available with higher minimum order quantities. REV. 04/10/09