Series SR75-2 0.75A, 300Vdc Optically Isolated, Short-Circuit Protected for AC or DC Loads DC Solid-State Relay Part Number* Relay Description SR75-2 Solid-State Relay with Terminals for Through-Hole Mount SR75-2S Solid-State Relay with Terminals for Surface Mount *A W or T suffix denoting the Teledyne reliability screening level, must be added to the part number. FEATURES/BENEFITS Short-Circuit Protected: Prevents damage to system components, ELECTRICAL SPECIFICATIONS assemblies and system wiring. Can be connected to protect AC or DC (-55C TO 105C, Ambient Temperature Unless Otherwise Specified) loads (AC with diode bridge) INPUT (CONTROL) SPECIFICATIONS Optical Isolation: Isolates control Min Max Units circuits from load transients Eliminates ground loops and signal ground noise Control Voltage Range (See Note 6) 3.8 32.0 Vdc Low Off-State Leakage: For high off- Input Current 5 Vdc (See Figure 1) 11.0 mA state impedance Switches High Voltages: To 300 Vdc Must Turn-On Voltage (See Note 7) 3.8 Vdc Switches High Currents: To 0.75 Adc Must Turn-Off Voltage 1.5 Vdc High Noise Immunity: Control signals isolated from switching noise Reverse Voltage Protection -32.0 Vdc High Dielectric Strength: For safety and for protection of control and OUTPUT (LOAD) SPECIFICATION signal level circuits Min Max Units DESCRIPTION Load Voltage Rating 300 Vdc The SR75-2 solid-state relay utilizes a power FET switch that is protected Transient Blocking Voltage 320 Vdc against overload and short-circuit currents. The short-circuit protection Output Current Rating (See Figure 2) 0.75 Adc feature not only provides protection should a short or overload occur while On Resistance (See Figure 3) 2.0 Ohm the relay is on, but will also provide protection should the relay be switched Leakage Current at Rated Voltage 100 A into a short. Once the protection trips the relay, it will remain off until reset by Turn-On Time 4.5 ms cycling the input control line. Using the SR75-2 to switch power sources and Turn-Off Time 0.5 ms loads can prevent fires, damage to system assemblies and system wiring. The power FET output offers low ON dV/dt 60V (See Note 8) 100 V/s resistance and can switch loads in either the high or the low side of the Electrical System Spike (See Note 8) 600 Vpk power line. The SR75-2 is packaged in a 16-pin DIP package with either Output Capacitance 100 KHz, 25 Vdc (See Note 8) 250 pF surface-mount or through-hole mounting available. Input to Output Capacitance at 1 KHz (See Note 8) 5 pF Dielectric Strength (See Note 8) 1000 Vrms 8 Insulation Resistance (See Note 8) 10 Ohm Junction Temperature 130 C Thermal Resistance (Junction to Ambient) 90 C/W Solderability (10 sec) 260 C 2004 TELEDYNE RELAYS (800) 284-7007 www.teledynerelays.com SR75-2 1 SR75-2 062004 Q1Series SR75-2 INPUT VOLTAGE (Vdc) CONTROL CURRENT VS VOLTAGE FIGURE 1 LOAD CURRENT DERATING CURVE FIGURE 2 (SEE NOTE 5) 2.0 1.8 1.6 TRIP CURRENT VS TIME 1.4 1.2 FIGURE 4 1.0 0.8 0.6 WIRING CONFIGURATIONS 0.4 R S 0.2 RETURN LOAD 0.0 55 -35 -15 5 25 45 65 85 105 125 16 14 12 10 JUNCTION TEMPERATURE (C) TYPICAL ON RESISTANCE VS T SR75-2 J V CC FIGURE 3 13 5 8 + +V LOAD MECHANICAL SPECIFICATIONS SHORT-CIRCUIT PROTECTED DC LOADS (SEE NOTES 3, 4 AND 6, FIGURE 3 AND 4) V BIAS = 5.0 VDC CTRL TTL 16 14 12 10 SR75-2 13 5 8 120 Vac V BIAS = 5.0 VDC SHORT-CIRCUIT PROTECTED AC LOADS (SEE NOTE 6) NOTES: 1. The input voltage is 5.0 Vdc for all tests unless otherwise specified. 2. Reversing the output polarity when the relay is in overload or is sustaining a short circuit may cause permanent damage. 3. Inductive loads must be diode suppressed. 4. Loads may be switched in either the high side or the low side of the power source. 5. Continuous load current rating is determined with relay mounted on a printed circuit card. 6. For input voltage greater than 6.0 Vdc a series resistor must Operating Temperature Range be used to limit the power dissipation on the input of the 55C to 105C relay. The resistor value should be selected using the Storage Temperature Range 55C to 125C following equation: Weight: 2.0 grams maximum R = (V - 6 volts)/11mA BIAS Case: 16-pin Dual-In-Line (TO-116) 7. Input transitions are to be less than 1 msec. Case Material: Filled epoxy, self- 8. Tested at 25C ambient. extinguishing SR75-2 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE 2004 TELEDYNE RELAYS SR75-2 062004 Q1 ON-RESISTANCE (OHM) INPUT CURRENT (mA) LOAD