Series KD44CF 2.0A at 60Vdc Optically Isolated DC Solid-State Relay Part Number* Relay Description KD44CF Solid-State DC Relay, with Flat Trip Short-Circuit Protection and Trip Status * The Y suffix denotes parameters tested to MIL-PRF-28750 specifications. The W suffix denotes parameters tested to Teledyne specifications. ELECTRICAL SPECIFICATIONS (-55°C TO +105°C AMBIENT UNLESS OTHERWISE NOTED) INPUT (CONTROL) SPECIFICATION When used in 2 terminal configuration (TTL or direct control) (See Fig. 1) Min FEATURES/BENEFITS Typ Max Units Input Current @ VBIAS = 5 Vdc (See Fig. 2, 4) 15 mAdc Turn-Off Voltage (Guaranteed Off) 1.5 Turn-On Voltage (Guaranteed On) 3.8 Vdc Vdc Reverse Voltage Protection -32 Vdc Input Supply Range (See Note 1) 32 Vdc 3.8 INPUT (CONTROL) SPECIFICATION When used in 3 terminal configuration (CMOS or open collector TTL) (See Fig. 1) Min Typ Max Units Control Current Vinput = 5 Vdc Vinput = 18 Vdc 250 µAdc 1 mAdc 0 18 Vdc Bias Supply Voltage Range (See Note 1) 3.8 32 Vdc Bias Supply Current (See Fig. 2) 16 mAdc Control Voltage Range Turn-Off Voltage (Guaranteed Off) 3.2 Turn-On Voltage (Guaranteed On) 0.3 Vdc Vdc OUTPUT (LOAD) SPECIFICATIONS (See Note 2, 3 & 6) Min Typ Max Units Continuous Load Current (See Fig. 3) 2 Adc Leakage Current VLOAD = 60 Vdc 40 µA Output Voltage Drop 0.60 Vdc Continuous Operating Load Voltage 60 Vdc Transient Blocking Voltage 80 Vdc ON Resistance © 2008 TELEDYNE RELAYS 0.30 Ohm • Short-circuit and overload protected: Prevents damage to relay and system wiring. • Flat trip curve (temperature compensated): Stable predictable overload protection. • Trip status: Discrete signal indicates an overload has occured, for failure analysis and diagnostics. • High surge capability: Prevents safe transients from causing erroneous protection trips. • TTL and CMOS compatible: Standard system interface. • Low ON resistance power FET output: Virtually no offset and very low output voltage drop. • Optical Isolation: Isolates output switching transients from system control signals. • Tested to MIL-PRF-28750 test methods. • Meets requirements of MIL-STD-704. DESCRIPTION The KD44CF solid-state relay is screened utilizing the test methods of MIL-PRF-28750 and is packaged in a low-profile hermetically sealed case. These relays are constructed using state-of-the-art hybrid technology. They feature fully floating power FET outputs that allow the load to be connected to either output terminal and provides a low ON resistance. The input (control) and the output are optically isolated to protect input logic circuits from output transients. The short-circuit/overload protection is temperature compensated, and has a flat trip characteristic over the operating temperature range. These relays will not be damaged by a continuous short circuit on the load, or by being turned on into a short circuit. A trip status indicator turns on when an overcurrent condition has occured, and the short-circuit protection has been activated. Cycling the control voltage resets the output switch and trip status indicator. (800) 284-7007 • www.teledynerelays.com KD44CF 1 KD44CF\032008\Q1 Series KD44CF MECHANICAL SPECIFICATIONS OUTPUT (LOAD) SPECIFICATIONS (See Note 2, 3 & 6) Min Typ Max Units Turn-Off Time (See Fig. 6) 1 ms Turn-On Time (See Fig. 6) 5 ms Output Capacitance, 25 Vdc, 100 KHz 1000 pF Input to Output Capacitance 15 pF Dielectric Strength Insulation Resistance @ 500 Vdc 1000 Vac 109 Ohm Output Junction Temperature @ ILOAD = maximum rated current 130 °C Thermal Resistance Junction to Ambient(θJA) 30 °C/W Thermal Resistance Junction to Case(θJC) 10 °C/W STATUS OUTPUT SPECIFICATIONS Min Typ Max Units Status Supply Voltage 32 Vdc Status Leakage Current 15 Vdc 4 µA 0.4 Vdc Status On Voltage @ 15 mA Status Output TRUTH TABLE Status Output State Enclosure: Leak Rate: Material: Header: Pins: Weight: Tolerance: Hermetically Sealed DIP 1 x 10-8 CC/Sec Maximum Cold Rolled Steel Nickel Plated Copper Core 20 grams XXX = ± .005 Control Input Output (Load) State Off (High) Low On On (Low) Low Tripped DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS) Off (High) High Off PIN-OUTS On (Low) High Relay Malfunction PIN NO. FUNCTION 1 CONTROL 3 GND 9 -V (OUT) 12 +V (OUT) °C 16 TRIP BIAS ENVIRONMENTAL SPECIFICATIONS Min Typ Max Units Temperature Range Operating -55 +95 -55 +125 °C 22 Vibration (10–3000 Hz) 100 g BLOCK DIAGRAM Constant Acceleration 5000 g Shock, 0.5 ms 1500 g KD44CF 2 Storage Specifications are subject to change without notice © 2008 TELEDYNE RELAYS KD44CF\032008\Q1 Series KD44CF 16 14 12 10 8 6 4 2 0 TYPICAL INPUT CURRENT VS INPUT VOLTAGE FIGURE 2 LOAD CURRENT DERATING CURVE Series Resistance (Ohms) FIGURE 3 2000 1500 1000 500 0 0 5 10 15 20 25 30 35 Bias Supply Voltage (Volts) WIRING CONFIGURATIONS SERIES LIMIT BIAS RESISTOR VS BIAS VOLTAGE FIGURE 1 © 2008 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com FIGURE 4 (See Note 1) KD44CF 3 KD44CF\032008\Q1 Series KD44CF TIME TO TRIP SECONDS TYPICAL OVERLOAD CURRENT VS TRIP TIME FIGURE 5 TIME TO TRIP SECONDS PULSEWIDTHS ARE TAKEN AT 10% PEAK VALUE TYPICAL TRIP CURRENT CHARACTERISTICS FOR SHORT CIRCUIT CONDITIONS FIGURE 7 OUTPUT TURN-ON AND OFF TIMING FIGURE 6 NOTES: 1.Control input is compatible with CMOS or open collector TTL (with pull up resistor). For bias voltages above 6V, a series resistor is required. Use the standard resistor value equal to or less than the value found in Figure 4. 2.The rated input voltage is 5V for all tests unless otherwise specified. 3.To calculate the maximum ON resistance for a given junction temperature, find the normalized ON resistance factor (NR) from Figure 5. Calculate the new ON resistance as follows: R(ON) = NR • RON @ 25°C + 0.15 4.Overload testing to the requirements of MIL-PRF-28750 is constrained to the limits imposed by the short circuit protection characteristics as defined in this specification. System series inductance for “shorted-load” mode of operation should be 30 µH maximum. Maximum repetition rate into a shorted load should not exceed 1 Hz. 5.A status pull up resistor is required for proper operation of the status output. Determine the current (Iso) required by the status interface. Calculate the current (Is) through the status resistor such that the sink current through the status output does not exceed 15 mA. - 0.4V V RSTATUS = STATUS IS 6.Inductive loads should be diode suppressed. Input transitions should be ≤1 ms duration and the input drive should be a bounceless contact type. 7.Input transitions should be ≤ 1 msec. KD44CF 4 Specifications are subject to change without notice © 2008 TELEDYNE RELAYS KD44CF\032008\Q1