Series KA/LA 2.0 to 7.5A, 250 Vrms Optically Isolated AC Solid-State Relay Part Number* Relay Description KA00HF KA58HF 2 A, 250 Vrms, AC Solid-State Relay 2 A, 250 Vrms, AC Solid-State Relay with Thermal Protection and Thermal TRIP Status LA00HL 7.5 A, 250 Vrms, AC Solid-State Relay LA58HL 7.5 A, 250 Vrms, AC Solid-State Relay with Thermal Protection and Thermal TRIP Status * The Y suffix denotes parameters tested to MIL-PRF-28750 test methods. The W suffix denotes parameters tested to Teledyne specifications. ELECTRICAL SPECIFICATIONS (-55°C TO +110°C UNLESS OTHERWISE SPECIFIED) INPUT (CONTROL) CHARACTERISTICS 2 Terminal Configuration (See Fig. 1) Min Max Units Input Voltage (See note 2) 3.8 32 Vdc 15 mA dc 1.5 Vdc Input Current (See Figure 1) VIN = 5 Vdc Turn-Off Voltage (Guaranteed Off) Turn-On Voltage (Guaranteed On) 3.8 Reverse Voltage Protection Vdc -32 Vdc INPUT (CONTROL) CHARACTERISTICS 3 Terminal Configuration (See Fig. 1) Min Max Units Bias Voltage (See note 2) 3.8 32 Vdc 16 mA 18 Vdc Control Current (at 5 Vdc) 250 µAdc Turn-On Control Voltage 0.3 Vdc Bias Current (VIN=32 Vdc) Control Voltage Range 0 Turn-Off Control Voltage 3.2 Vdc OUTPUT (LOAD) SPECIFICATIONS Min Max Units Load Voltage 20 250 Vrms Frequency Range 40 440 Hz Continuous Load Current (See Figure 3) KA and LA without Heat Sink LA with Heat Sink 2.0 7.5 Arms Arms Output Voltatge Drop 1.2 Vrms KA/LA 78 FEATURES/BENEFITS • Available with thermal protection and thermal TRIP status: Provides self-protection from thermal runaway conditions and indicates protection state for system BIT. • Optical Isolation: Isolates control elements from load transients with reduced EMI. • Fully Floating Output: Eliminates ground potential loops and allows the output to sink or source current. • Buffered Control: Relay can be controlled directly from TTL or CMOS logic circuits. • Integral Snubber Circuit: Enhances dV/dt capability while minimizing EMI. DESCRIPTION The Series KA/LA solid-state relays (SSRs) is designed for use in AC power switching applications where safety and reliability are primary concerns. These SSRs are rated for load voltages up to 250 Vrms from 40 to 440 Hz and are ideal for resistive and reactive loads with power factors as low as 0.2. Inverse parallel SCRs are configured for zero voltage turn on. Optical isolation to 1250 Vrms between the control (input) and load (output) allows the load to be safely controlled by logic circuitry. The KA/LA series is available with thermal protection and thermal TRIP status. In case of a thermal runaway condition, the SSR will shut down the output switch and latch off until the input is reset and the junction temperature returns to a safe level. When the output does latch off, the TRIP status line will yield a logic level output indicating the protection state of the SSR. This feature provides the user with failure mode indication while enhancing the system diagnostic capability. These SSRs are available to the Y screening level of MIL-PRF28750 and are packaged in low-profile hermetically sealed cases. SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2002 TELEDYNE RELAYS KA/LA\072002\Q1 Series KA/LA BLOCK DIAGRAM OUTPUT (LOAD) SPECIFICATIONS Min Max Units 10 mA Turn-On Time 1/2 Cycle Turn-Off Time 1 Cycle Transient Voltage (5 sec, 25°C) +500 V pk Zero Voltage Turn-On Point +15 V pk Off-State Leakage Current (250 Vac, 400 Hz) dv/dt 100 Surge Current V/µs MIL-PRF-28750 Load Power Factor 0.2 Insulation Resistance @ 500 Vdc 109 Ohm Input to Output Capacitance 15 Dielectric Withstanding Voltage (60Hz) 1250 MECHANICAL SPECIFICATIONS pF Vrms o Junction Temperature at Rated Current (TJ Max) 125 C Thermal Resistance Junction to Ambient (θJA) 30 o Thermal Resistance Junction to Case (θJC) 5 o C/W C/W STATUS OUTPUT TRUTH TABLE Status Control Output Output State Input (Load) State Off (High) Low On On (Low) Low Tripped (Off) Off (High) High Off On (Low) High Non-applicable condition STATUS OUTPUT SPECIFICATIONS Min Max Units Status Supply Voltage 32 Vdc Status “OFF” Leakage Current @ 32 Vdc 10 µAdc Status Sink Current (Vso ≤ 0.4 Vdc) 10 mAdc Status “ON” State Voltage @10mAdc 0.4 Vdc © 2002 TELEDYNE RELAYS DIMENSIONS ARE SHOWN IN INCHES (MILLIMETERS) (800) 284-7007 • www.teledynerelays.com KA/LA 79 KA/LA\072002\Q1 Series KA/LA ENVIRONMENTAL SPECIFICATIONS Ambient Temperature Operating Storage Min Max -55 -55 +110 +125 Shock (0.5 ms Pulse) Vibration (100 g) 10 Acceleration Units o o C C 1500 g 3000 Hz 5000 g INPUT CURRENT VS VOLTAGE FIGURE 2 (SEE NOTE 2) NOTES: 1. Control input is compatible with CMOS or open collector TTL (with pull up resistor). 2. For bias voltages above 6 Vdc, a series resistor is recommended. Use a standard resistor value equal to or less than the value found from Figure 6. 3. Unless otherwise noted, the input voltage for functional tests shall be 5 Vdc. 4. Output may temporarily lose blocking capability during and after a surge, until TJ falls below maximum. 5. Transient suppression must be used to limit the voltage to < 500 Vpeak when switching inductive loads. KA/LA 80 WIRING CONFIGURATION FIGURE 1 (See Note 1 & 2) SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2002 TELEDYNE RELAYS KA/LA\072002\Q1 Series KA/LA THERMAL DERATING CURVE LA SERIES / KA SERIES WITOUT HEATSINK FIGURE 3 (A) TYPICAL VOLTAGE DROP VS LOAD CURRENT OF LA SERIES WITH 1 °C/W HEATSINK FIGURE 5 THERMAL DERATING CURVE LA SERIES WITH HEATSINK FIGURE 3 (B) SERIES LIMIT BIAS RESISTOR VS BIAS VOLTAGE FIGURE 6 (SEE NOTE 2) TYPICAL VOLTAGE DROP VS LOAD CURRENT OF LA SERIES WITHOUT HEATSINK FIGURE 4 © 2002 TELEDYNE RELAYS TYPICAL THERMAL TRIP TIME KA58HF AND LA58HL FIGURE 7 (800) 284-7007 • www.teledynerelays.com KA/LA 81 KA/LA\072002\Q1