Series SR75-1 1.5A, 60Vdc Optically Isolated, Short-Circuit Protected DC Solid-State Relay Part Number* Relay Description SR75-1 Solid-State Relay with Terminals for Through-Hole mount SR75-1S * 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 ELECTRICAL SPECIFICATIONS (-55°C TO 105°C, Ambient Temperature Unless Otherwise Specified) INPUT (CONTROL) SPECIFICATIONS Control Voltage Range (See Note 2) Min Max Units 3.8 32.0 Vdc 11.0 mA Input Current @ 5 Vdc (See Figure 1) Must Turn-On Voltage (See Note 3) 3.8 Must Turn-Off Voltage Reverse Voltage Protection Vdc 1.5 Vdc -32.0 Vdc OUTPUT (LOAD) SPECIFICATION Min Max Units Load Voltage Rating 60 Vdc Transient Blocking Voltage 80 Vdc Output Current Rating (See Figure 2) 1.5 Adc On Resistance (See Figure 3, Note 8) 0.5 Ohm Leakage Current at Rated Voltage 100 µA Turn-On Time 4.5 ms Turn-Off Time 0.5 ms dV/dt @ 60 Vdc (See Note 8) 100 V/µs ± 600 Vpk Electrical System Spike (See Note 9) Input to Output Capacitance at 1 MHz (See Note 9) Dielectric Strength Insulation Resistance 20 pF 1000 Vrms 108 Ohm Junction Temperature 130 °C Thermal Resistance (Junction to Ambient) 90 °C/W Solderability (10 sec) 260 °C © 2004 TELEDYNE RELAYS • Short-Circuit Protected: Prevents damage to system components, assemblies and system wiring • Optical Isolation: Isolates control circuits from load transients Eliminates ground loops and signal ground noise • Low Off-State Leakage: For high offstate impedance • Switches High Currents: To 1.5 Adc • High Noise Immunity: Control signals isolated from switching noise • High Dielectric Strength: For safety and for protection of control and signal level circuits DESCRIPTION The SR75-1 solid-state relay utilizes a power FET switch that is protected against short-circuit and overload currents. The short-circuit protection feature not only provides protection should a short or overload occur while the relay is on, but will also provide protection should the relay be switched into a short. In either case, the relay will sense the short-circuit condition and then block it indefinitely until the short is removed and the unit is reset by cycling the input control. Using the SR75-1 to switch power sources and loads can prevent fires, damage to system assemblies and system wiring. The power FET output offers low “ON” resistance and can switch loads in either the high or the low side of the power line. The SR75-1 is packaged in a 16-pin DIP package with either surface-mount or through-hole mounting available. (800) 284-7007 • www.teledynerelays.com SR75-1 1 SR75-1\062004\Q1 INPUT CURRENT (mA) Series SR75-1 INPUT VOLTAGE (Vdc) INPUT CURRENT VS VOLTAGE FIGURE 1 CONTINUOUS LOAD CURRENT (Amp) 2.0 1.6 1.2 0.8 0.4 0.0 –55 -35 -15 5 25 45 65 85 105 125 AMBIENT TEMPERATURE (°C) LOAD CURRENT DERATING CURVE FIGURE 2 (SEE NOTE 7) ON-RESISTANCE (OHM) 0.5 0.4 TRIP TIME VS. OVERLOAD CURRENT FIGURE 4 WIRING CONFIGURATIONS RS 0.3 16 0.2 0.1 14 12 LOAD RETURN LOAD +V 10 SR75-1 VCC 0.0 –55 -35 -15 5 25 45 65 85 105 125 + JUNCTION TEMPERATURE (°C) TYPICAL ON RESISTANCE VS TJ FIGURE 3 MECHANICAL SPECIFICATIONS 1 3 5 8 SHORT-CIRCUIT PROTECTED DC LOADS (SEE NOTES 2, 4 AND 6) V BIAS = 5.0 VDC CTRL TTL 16 14 12 LOAD RETURN LOAD +V 10 SR75-1 1 3 5 V BIAS = 5.0 VDC 8 SHORT-CIRCUIT PROTECTED AC LOADS (SEE NOTE 6) • Operating Temperature Range –55°C to 105°C • Storage Temperature Range –55°C to 125°C • Weight: 2.0 grams maximum • Case: 16-pin Dual-In-Line (TO-116) • Case Material: Filled Epoxy, self extinguishing SR75-1 2 NOTES: 1. The input voltage is 5.0 Vdc for all tests unless otherwise specified. 2. For input voltage greater than 6.0 Vdc a series resistor must be used to limit the power dissipation on the input of the relay. The resistor value should be selected using the following equation: R = (VBIAS - 6 volts)/11mA 3. The input transitions are to be less than 1.0 msec duration. 4. Inductive loads must be diode suppressed. 5. Reversing the output polarity when the relay is in overload or is sustaining a short circuit may cause permanent damage. 6. Loads may be switched in either the high side or the low side of the power source. 7. Continuous load current rating is determined with relay mounted on a printed circuit card. 8. Tested at 25°C only. 9. Qualification and/or random sample test only. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2004 TELEDYNE RELAYS SR75-1\062004\Q1