AZ AZ9721 40 AMP AUTOMOTIVE RELAY FEATURES • • • • • • 40 Amp contact rating High momentary carry current (60A) SPST (1 Form A), SPDT (1 Form C) Quick connect terminals Metal or plastic mounting bracket available Resistor or diode parallel to coil available CONTACTS GENERAL DATA Arrangement SPST (1 Form A) SPDT (1 Form C) Ratings Resistive load: Max. switched power: 480 W (SPST) 480 W (N.O.) 360 W (N.C.) Minimum operations 1 x 107 1 x 105 at rated load Operate Time (typical) 10 ms at nominal coil voltage Release Time (typical) 10 ms at nominal coil voltage (with no coil suppression) Max. switched current: 40 A (SPST) 40 A (N.O.) 30 A (N.C.) Dielectric Strength 750 Vrms coil to contact (at sea level for 1 min.) 750 Vrms contact to contact Max. switched voltage: 75 VDC Insulation Resistance 100 megohms min. at 500 VDC, 20°C 50% RH Dropout Greater than 10% of nominal coil voltage Ambient Temperature Operating Storage -55°C (-67°F) to 70°C (158°F) -55°C (-67°F) to 155°C (311°F) Vibration 0.062" DA at 20-200 Hz Shock 20 g Enclosure P.B.T. polyester Terminals Copper alloy 0.25 Quick Connect Weight 40 grams Minimum Load 5 VDC, 0.1 A Material Silver alloy Resistance < 50 milliohms initially (24 V, 1 A voltage drop method) COIL Power At Pickup Voltage (typical) 0.76 W Max. Continuous Dissipation 4.0 W at 20°C (68°F) Temperature Rise 63°C (113°F) at nominal coil voltage Temperature Life Expectancy Mechanical Electrical Max. 155°C (311°F) NOTES 1. All values at 20°C (68°F). 2. Relay may pull in with less than “Must Operate” value. 3. Specifications subject to change without notice. 9/3/98W AZ AZ9721 COIL SPECIFICATIONS Nominal Coil VDC 12 24 Must Operate VDC 7.8 17.0 Max. Continuous VDC 17.8 36.0 Coil Resistance ± 10% 80 320 RELAY ORDERING DATA AZ9721-1C-12DC2R1 Blank - Standard no diode, no resistor R1 - 680 Ohm, ½ w resistor in parallel with 12 V coil 2700 Ohm ½ w resistor in paralle with 24 V coil R2 - 820 Ohm, ½ w resistor in parallel with 12 V coil 3200 Ohm ½ w resistor in parallel with 24 V coil D1 - 1N4007 diode in parallel with coil, anode on #85 terminal D2 - 1N4007 diode in parallel with coil, cathode on #85 terminal D3 - 1N4004 diode in parallel with coil, anode on #85 terminal D4 - 1N4004 diode in parallel with coil, cathode on #85 terminal C1 - Plastic dust cover with steel mounting bracket C2 - Plastic dust cover with plastic mounting bracket C3 - Plastic dust cover 24D - 24 volt coil 12D - 12 volt coil 1A - SPNO Single pole normally open 1C - SPDT Single pole double throw Basic series designation - AZ9721 9/3/98W AZ AZ9721 MECHANICAL DATA AZ9721-C1 AZ9721-C2 ø.217 [ø5.5] ø.217 [ø5.5] .394 [10.0] .394 [10.0] .984 [25.0] .984 [25.0] 5x.433 [11.0] 5x.433 [11.0] 5x.031 [0.8] 5x .031 [0.8] 5x.248 [6.3] 5x.177 [4.5] .165 [4.2] 5x.177 [4.5] 5x.248 [6.3] .150 [3.8] .378 [9.6] .378 [9.6] 1.102 [28.0] 1.102 [28.0] .346 [8.8] .346 [8.8] .661 [16.8] .661 [16.8] 1.102 [28.0] 1.102 [28.0] Wiring Diagram AZ9721-C3 .984 [25.0] 85 86 85 85 86 86 5x.433 [11.0] R1,R2 5x.177 [4.5] D2,D4 5x.031 [0.8] 30 .098 [2.5] 85 .378 [9.6] D1,D3 5x.248 [6.3] 30 86 87A 86 85 1.102 [28.0] 87 .346 [8.8] 1C 87 1A .661 [16.8] 1.102 [28.0] 9/3/98W AZ9721 Sockets & Hardware for AZ9721 ST9721-U1 .079 [2.0] 1.300 [33.0] 1.091 [27.7] .236 [6.0] .472 [12.0] .354 [9.0] .945 [24.0] 1.417 [36.0] 1.205 [30.6] ST9721-U2 ST9721-U3 .245 [6.2] .075 [1.9] .945 [24.0] .945 [24.0] .059 [1.5] 1.043 [26.5] 1.043 [26.5] .571 [14.5] .200 [5.1] .138 [3.5] .345 [8.8] .659 [16.7] .905 [23.0] 5x ø.116 [ø2.9] .375 [9.5] .692 [17.6] .090 [2.3] PCB LAYOUT VIEWED TOWARDS TERMINALS Note: Recommended receptical connector Amp Part numbers are 5-160558-9 or 5-1605-26-9 9/3/98W