----MAKE SELECTION---- More Information Literature Custom Designs Distributors Relay Application Questionnaire ----ENGINEERING BULLETINS---- Relay Life Stray Capacitance Protection Surface Mount Soldering ----RELAYS---- High Voltage Relays Series 10 - Black Beauty Series 15 - Form C Series 20 - Open Line Series 30 - In-Line SIP Series 40 - Standard Tubular Series 40 - HI-REL Form A Series 40 - Low-Cost Commercial Form A Series 40 - Micro & Standard Size Form C Series 40 - High Voltage/Mercury Wetted Series 40 - Ultra Micro/Ultra Sensitive Series 40 - Form B & Magnetic Latching Series 50 - Standard Molded Series 60 - Low Thermal Series 70 - Surface Mount Reed Relays B1A-TEL - Line Sense Reed Relay DIP Reed Relays SMRR2-5-150 - Surface Mount for ATE Equipment Series SN - Thin SIP Reed Relays Position Sensors

SERIES 20 OPEN-LINE REED RELAYS

TERMINAL SPACING .100" or .150" COIL TERMINALS AT SAME END OF RELAY CON- TACT FORM PART NUMBER COIL V.D.C. COIL RES. (ohms) @20°C MAX. PICK- UP V.D.C. @20°C MIN. DROP- OUT V.D.C. @20°C NOMINAL TIMING (Milliseconds) PHYSICAL DWG. E.S. OPTION CIRCUIT DIAGRAM (Top View of Relay) .100" TERM SP. .150" TERM SP. ACTUATE DE- ACTUATE BOUNCE .100" TERM. SP. .150" TERM. SP. 1A 20-1051-10 25-1051-10 5 500 3.8 0.5 0.4 0.2 0.25 A1 B1 YES Fig. A 20-1061-10 25-1061-10 6 125 4.0 0.5 0.25 0.1 20-1121-10 25-1121-10 12 500 8.0 1.0 0.25 0.1 20-1241-10 25-1241-10 24 2000 16.0 2.0 0.4 0.2 2A 20-2051-10 25-2051-10 5 200 3.8 0.5 0.5 0.2 0.25 A2 B2 YES Fig. B 20-2061-10 25-2061-10 6 110 4.0 0.5 0.3 0.1 20-2121-10 25-2121-10 12 440 8.0 1.0 0.3 0.1 20-2241-10 25-2241-10 24 1750 16.0 2.0 0.5 0.2 1C 20-1051-30 25-1051-30 5 500 3.8 0.5 0.5 0.4 N.O. 0.5 N.C. 1.5 A1 B1 YES Fig. C 20-1061-30 25-1061-30 6 125 4.0 0.5 0.25 0.25 20-1121-30 25-1121-30 12 500 8.0 1.0 0.25 0.25 20-1241-30 25-1241-30 24 2000 16.0 2.0 0.5 0.4 2C 20-2051-20 25-2051-30 5 200 3.8 0.5 0.6 0.4 N.O. 0.5 N.C. 1.5 A2 B2 NO Fig. D 20-2061-30 25-2061-30 6 80 4.0 0.5 0.3 0.25 20-2121-30 25-2121-30 12 310 8.0 1.0 0.3 0.25 20-2241-30 25-2241-30 24 1250 16.0 2.0 0.6 0.4 1A MERCURY WETTED 20-1051-60 25-1051-60 5 75 3.8 0.5 1.0 1.0 0 A1 B1 YES Fig. E 20-1061-60 25-1061-60 6 75 4.0 0.5 20-1121-60 25-1121-60 12 300 8.0 1.0 20-1241-60 25-1241-60 24 1200 16.0 2.0 2A MERCURY WETTED 20-2051-60 25-2051-60 5 45 3.8 0.5 1.5 1.0 0 A2 B2 YES Fig. F 20-2061-60 25-2061-60 6 45 4.0 0.5 20-2121-60 25-2121-60 12 175 8.0 1.0 20-2241-60 25-2241-60 24 700 16.0 2.0   Figure A Figure B Figure C Figure D Figure E Figure F TERMINAL SPACING .100" or .150" COIL TERMINALS AT OPPOSITE ENDS OF RELAY CON- TACT FORM PART NUMBER COIL V.D.C. COIL RES. (ohms) @20°C MAX. PICK- UP V.D.C. @20°C MIN. DROP- OUT V.D.C. @20°C NOMINAL TIMING (Milliseconds) PHYSICAL DWG. E.S. OPTION CIRCUIT DIAGRAM (Top View of Relay) .100" TERM SP. .150" TERM SP. ACTUATE DE- ACTUATE BOUNCE .100" TERM. SP. .150" TERM. SP. 1A 20-1051-10.2 25-1051-10.2 5 500 3.8 0.5 0.4 0.2 0.25 A1 B1 YES Fig. G 20-1061-10.2 25-1061-10.2 6 125 4.0 0.5 0.25 0.1 20-1121-10.2 25-1121-10.2 12 500 8.0 1.0 0.25 0.1 20-1241-10.2 25-1241-10.2 24 2000 16.0 2.0 0.4 0.2 2A 20-2051-10.2 25-2051-10.2 5 200 3.8 0.5 0.5 0.2 0.25 A2 B2 YES Fig. H 20-2061-10.2 25-2061-10.2 6 110 4.0 0.5 0.3 0.1 20-2121-10.2 25-2121-10.2 12 440 8.0 1.0 0.3 0.1 20-2241-10.2 25-2241-10.2 24 1750 16.0 2.0 0.5 0.2 1C 20-1051-30.2 25-1051-30.2 5 500 3.8 0.5 0.5 0.4 N.O. 0.5 N.C. 1.5 A1 B1 YES Fig. I 20-1061-30.2 25-1061-30.2 6 125 4.0 0.5 0.25 0.25 20-1121-30.2 25-1121-30.2 12 500 8.0 1.0 0.25 0.25 20-1241-30.2 25-1241-30.2 24 2000 16.0 2.0 0.5 0.4 2C 20-2051-20.2 25-2051-30.2 5 200 3.8 0.5 0.6 0.4 N.O. 0.5 N.C. 1.5 A2 B2 NO Fig. J 20-2061-30.2 25-2061-30.2 6 80 4.0 0.5 0.3 0.25 20-2121-30.2 25-2121-30.2 12 310 8.0 1.0 0.3 0.25 20-2241-30.2 25-2241-30.2 24 1250 16.0 2.0 0.6 0.4 1A MERCURY WETTED 20-1051-60.2 25-1051-60.2 5 75 3.8 0.5 1.0 1.0 0 A1 B1 YES Fig. K 20-1061-60.2 25-1061-60.2 6 75 4.0 0.5 20-1121-60.2 25-1121-60.2 12 300 8.0 1.0 20-1241-60.2 25-1241-60.2 24 1200 16.0 2.0 2A MERCURY WETTED 20-2051-60.2 25-2051-60.2 5 45 3.8 0.5 1.5 1.0 0 A2 B2 YES Fig. L 20-2061-60.2 25-2061-60.2 6 45 4.0 0.5 20-2121-60.2 25-2121-60.2 12 175 8.0 1.0 20-2241-60.2 25-2241-60.2 24 700 16.0 2.0   Figure G Figure H Figure I Figure J Figure K Figure L   How to Order EXAMPLE: 20-1051-11 1 Form A 5 Volt 500 Ohms Coil Resistance Magnetic Shield CONTACT RATINGS (@ 20°C) STANDARD SWITCHES FORM A FORM C MERC WET Voltage (Max. Switching) 250 VDC 200 VDC 1000 VDC Current (Max. Switching) 1 amp .5 amp 1 amp Power (Max. Switching) 20 Watts 10 Watts 100 Watts Current (Max. Carry) 1 amp 1 amps 2 amps Capacitance (Typical) .2 PF .2 PF .3 PF Contact Resistance (Typical) .100 ohms .100 ohms .050 ohms Operate Time (Typical) .5 MS .5 MS 1.0 MS Release Time (Typical) .25 MS .25 MS 1.0 MS Temperature -55 to + 85°C -55 to + 85°C -30 to + 85°C Shock 200 G at 11 MS duration 200 G at 11 MS duration 10 G at 11 MS duration Vibration 50 G at 0-2000 Hz 50 G at 0-2000 Hz 10 G at 0-2000 Hz Insulation Resistance 10 to the 10th ohms min at RT 10 to the 10th ohms min at RT 10 to the 10th ohms min at   *Switch Options Standard Form A 1 Standard Form B 2 Standard Form C 3 High Current Form A 4 High Voltage Form A 5 Mercury Wetted Form A 6 Mercury Wetted Form C 7 High Power 8   **Options No Options 0 Magnetic Shield 1 Electro-Static Shield (ES) 2 High Temperature 3 Magnetic Shield and High Temperature 4 ES Shield and High Temperature 5 Magnetic Shield and ES Shield 6 Magnetic Shield and ES and High Temperature 7 Diode Suppression 8 Magnetic Shield and Diode Suppression 9   Series 20 relays are constructed using a bobbin of special design meeting UL94V-0. High quality rhodium contact switches are used in all standard open line relays. Relay lead wires are tinned for maximum solderability.

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