38BC-4-H-3-S

Butt Contact Pushbutton Switches Series 38BM and 38BC Sub-Miniature Surface Mount Features • Surface Mount Process Compatible • Sealed Construction • SPST and SPDT, Momentary Contact • Extended or Flush Plunger • Drop-In Replacement for Industry Standard SPECIFICATIONS DIMENSIONS In inches (and millimeters) Pushbutton Switches 38BM .320 (8,13) .200 (5,08) CL .410 (10,41) MAX. SPST .100 (2,54) DIA. .180 (4,57) DIA. .125 (3,18) .075 (1,91) PC Mounting .105 (2,67) TYP. .162 (4,11) DIM "A" .070 (1,78) .040 (1,02) .143 TYP. (3,63) TYP. .024 (0,61) .020 (0,51) TYP. .030 (0,76) .289 (7,34) .368 .080 (9,35) (2,03) .040 .128 (1,02) (3,25) TYP. TYP. .080 (2,03) TYP. .200.010 (5,080,25) .150 (3,81) TYP. 38BC .320 (8.13) .200.010 (5,080,25) .162 (4,11) .125 (3,18) .100 (2,54) .024 (0,61) SPDT 90˚ "A" DIM "A" .075 (1,91) STANDOFF PADS .105 (2,67) TYP. .030 (0,76) .289 (7,34) .200 (5.08) 1 2 3 .410 (10,41) MAX. .040 (1.02) .368 .128 (3,25) (9.35) .080 (2,03) .070 (1.78) .143 (6.63) .080 (2,03) .150 (3.81) TERMINAL ID .040 (1.02) TERMINAL PADS Rating Criteria Operating Life: 80,000 make-and-break cycles at full load Contact Rating (resistive load): Gold Contacts: 0.4 VA maximum at 20 Vac or Vdc maximum Silver Contacts: I.O. Amps maximum at 120 Vac or 28 Vdc Contact Resistance: Below 20 milliohms typical initial at 2-4 Vdc, 100 mA Insulation Resistance: 1000 megaohms min. Voltage Breakdown: 1000 Vrms minimum at sea level Operating Temperature: -30°C to +85°C Solderability: Per MIL-STD-202F, Method 208D, or EIA RS-186E Method 9 (1 hour steam aging) Materials and Finishes Base and Cover: Thermoplastic (UL 94V-0) Plunger: Thermoplastic (UL 94V-0), with standard internal o-ring seal Terminals: Copper alloy, gold plate over nickel plate Spring: Plated Music Wire Contact System: Copper alloy, gold or silver plate (as specified) over nickel plate Switch Support: Brass, tin-plated Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill. Pushbutton Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com 4 Butt Contact Pushbutton Switches Series 38BM AND 38BC Sub-Miniature Surface Mount TAPE AND REEL PACKAGING Circuitry SWITCHES AND COVER TAPE NOT SHOWN FOR CLARITY DIRECTION OF FEED SPSt n.O. SPST–N.O. N.C. TERM. 1 COMM TERM. 2 N.O. TERM. 3 38BM-4-H-1-S SHOWN FOR REFERENCE ONLY .630±.004 (16.00±0.1MM) POCKET CENTER LINES 13 INCH REEL Pushbutton Switches SPDT–N.O. 1.260±.012 (32.00± 0.3MM) ORDERING INFORMATION Series: 38BM = SPST, Momentary, 38BC = SPDT, Momentary, Dimension "A": 0 = 0.020" 4 = 0.215" 38BX-0-H-3-S Seal: S = O-Ring Seal Contact Plating Material: 1 = Solder Dip over Gold (non-RoHS) 2 = Solder Dip over Silver (non-RoHS) 3 = Gold - RoHS Compliant 4 = Silver - RoHS Compliant Surface Mount Surface Mount Orientation: H = Horizontal to PCB Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com Pushbutton 5