MINIATURE SWITCHES Sub Miniature Pushbutton Switches for Printed Circuit Boards — Wave Solderable Series B8000 PCB Pushbutton Switches SPECIFICATIONS Mechanical life — 500,000 operations Weight — 0.06 ounces (1.7 grams) Schematic — Pushbutton • • minimum Electrical life — 100,000 operations PCB Switches • Contact resistance — 25 milliohms minimum. • maximum Dielectric strength — 1000 VAC rms • Ambient temperature range — -20°C • to +70°C SELECTION TABLES (Bold Face Type indicates items normally in Distributor Stock) Catalog No. By Terminal Type Note: Optional Snap-On button must be ordered separately OPTIONAL BUTTON CAPS Poles Right Angle P.C. Stand & Operation P.C. Mount Up Mount Button Cap Color Catalog Number Throw .220” .160” .120” Black P281B (5.6 mm) (4.1 mm) (3.1 mm) Red P281R Momentary or Latch Down B8103 Momentary or CURRENT RATINGS Latch Down B8500 2 Circ. Momentary B8600 Nominal Rating, Amperes 6 VDC 12 VDC 28 VDC 125 VDC B8500/B8600 1 1 0.5 0.5 For Latch-Down, depress plunger and rotate 30° clockwise. NOTE: For special .5 VA max. rating @ 28 VAC or DC contact Electroswitch. APPROXIMATE DIMENSIONS B8103, B8500 and B8600 Series “Crossed Wire” contact system High eliminates bounce Contact pressure gives low contact resistance Gold over nickel over silver over copper Drain holes permit Gold-plated shorting complete flux washdown bar and terminals provide over 500,000 cycles TYPE P281 low level current/ voltage operation terminal length order B8103 SNAP-ON BUTTON (Optional) Ultra-Miniature Pushbutton Switches AC and DC — Round Base SPECIFICATIONS Resistive rating — .75 amperes resistive at 125 VAC normally Pretravel — .015 minimum/.050 maximum • • open; .50 amperes resistive at 125 VAC normally closed; also Overtravel — .030 minimum • rated 1.0 ampere normally open for 15,000 operations and .75 Operating force — 8 oz. maximum • amperes normally closed for 10,000 operations. For 28 VDC Electrical life — 50,000 operations minimum • rating 1.5 amperes normally open for 10,000 operations and 1.0 Mechanical life — 50,000 operations minimum ampere normally closed for 10,000 operations. Dry circuit rated • Materials — contacts and terminals are gold plated copper 10 milliamperes at 30 mVDC. • Mounting hardware — One #8-40 nut supplied unassembled • APPROXIMATE DIMENSIONS SELECTION TABLE Plunger Catalog Circuit Color Number N.O. Red SA1RV20 N.O. Black SA1BV20 N.C. Black SA1BW20 N.C. Red SA1RW20 OPTIONAL BUTTON CAPS Button Cap Catalog Description Color Number ` Red SW53AA1 .250” Slip on cap for SA1 series OPTIONAL BUTTON CAP Black SW53AA2 .250” Slip on cap for SA1 series ACTUAL SIZE MUST BE ORDERED SEPARATELY CAUTION — MANUAL SWITCHES ARE AFFECTED BY HEAT, CLEANING SOLVENTS AND FLUX. EXTREME CARE SHOULD BE EXERCISED DURING HAND SOLDERING AND WAVE SOLDERING TO PREVENT SWITCH CONTAMINATION. 17 17