Solid state relays for DC load switching

Up to 75 amp solid state relays, up to 600 volts DC loads switched
Individual solid state relay hockey pucks or pre-assembled onto heat sinks

POWER-IO also does custom designed solid state relays, multi-zone ssr units, custom input ranges for solid state relays, and more. Additional models include: solid state relays for AC loads, AC switching solid state relay + heat sink + din rail mounting, and other solid state relay products.

  • Internal, oversized mosfets + advanced metalized ceramic design = increased reliability, less thermal rise, and longer life
  • Internal, IGBT design in the 600 volt rated model HDD-6V15
  • International green LED that indicates input status for fast, visual diagnostics
  • Optically isolated for 1500 volts and 2100 Vpk
  • 15kHz FAST switching times for superior, consistent performance
  • Ideal for activating robotics, DC servos, PWM dc loads, drone vehicle accessories, automated test equipment, DC vending machine motors, automobile accessories, battery powered lighting, battery back-up applications, and similar DC applications.
  • All parameters shown are at 40ºC, a factory-hardened specification
  • Versatile high side or low side switching of the load
  • When used with inductive VDC motors, make sure that the relay is at least twice the motor's voltage. (Example: a 48 vdc motor needs a 100 volt relay)
  • Do you require custom features, special labels, military specifications, custom platings, unique performance curves? Contact Power-io directly.

Part Numbers

HDD-06V75   up to 60VDC max, up to 75A, 4-32 VDC activated Buy
HDD-1V20   up to 100VDC max, up to 20A, 4-32 VDC activated Buy
HDD-1V40   up to 100VDC max, up to 40A, 4-32 VDC activated Buy
HDD-2V25   up to 200VDC max, up to 25A, 4-32 VDC activated Buy
HDD-6V15   up to 600VDC max, up to 15A, 4-32 VDC activated Buy
COVR-SAFETY-000    Spare, clear safety cover Buy
HDD_DIODE    A high speed diode to install across the inductive load Buy

Pre-assembled units: Some popular choices for the solid state relay, mounted on a properly sized heat sink, including a safety cover, thermal pad and properly torqued installation screws.
HDD-06V75-HS1.0   HDD-06V75 on a HEATSK-DIN-1.0 heat sink Buy
HDD-1V20-HS1.6   HDD-1V20 on a HEATSK-DIN-1.6 heat sink Buy
HDD-1V40-HS1.0   HDD-1V40 on a HEATSK-DIN-1.0 heat sink Buy
HDD-2V25-HS1.0   HDD-2V25 on a HEATSK-DIN-1.0 heat sink Buy
HDD-6V15-HS1.0   HDD-6V15 on a HEATSK-DIN-1.0 heat sink Buy

Purchase heat sinks, thermal pads, pre-installation options separately    Parts page

dc switching solid state relaysolid state relay


Specifications

 HDD-06V75 HDD-1V20 HDD-1V40 HDD-2V25 HDD-6V15
Voltage range of output 0-60 VDC 0-100 VDC 0-100 VDC 0-200 VDC 0-600 VDC
Input  
Min turn-on voltage/current 4 VDC / 10 mA
Max turn-on voltage/current 32 VDC / 20 mA
Min turn-off voltage 1 VDC
Output  
Amps output, continuous, with proper heat sink 75 amps 20 amps 40 amps 25 amps 15 amps
Max on-state voltage drop at current output at 40ºC base plate temperature 1.5 VDC 1.5 VDC 1.5 VDC 1.9 VDC 1.9 VDC
Current surge, non-repetitive 225 A peak 60 A peak 120 A peak 75 A peak 45 A peak
On state resistance max at current output at 40ºC base plate temperature 0.020 ohm 0.069 ohm 0.034 ohm 0.075 ohm IGBT
Thermal resistance (Tj=115°C) 0.55 °C/W 1.0 °C/W 0.55 °C/W 0.55 °C/W 1.0 °C/W
Leakage at 50°C 1 mA 2 mA 2 mA 2 mA 600 µamp
Max turn-on output time, control input at >8VDC, DC Line at >8VDC 25 µsecond
Max turn-off output time 25 µsecond
High frequency switching test
©2004 Power-io's high speed test results		 100% of relays are tested at 15 kHz, @ 50% duty cycle, @ 10V or greater control input, and @ 10 volt or greater dc load. This generates a PWM switching speed of 33 microseconds "on" and 33 microseconds "off" or 15,000 ons and offs per second.
General  
Dielectric strength (input-output-base plate) 1500 Vrms, 2100 Vpk
Capacitance input to output 8 pf
Ambient operating temperature range -40 to +85°C. Amperage derating curve decreases from full amperage at 40°C to zero amperage at 100°C when a proper heat sink and air flow pattern are in use. Design your application so that you do not exceed 80% of the max amperage at a given temperature in order to anticipate load variations.
Inductive load protection diode -- recommended for all inductive loads, even "slightly" inductive loads All inductive DC loads require a high speed protective diode across the load. Two recommended choices are:
  • a 2 amp On Semi, DO-41 package, 600V reverse voltage, 75ns
  • a 3 amp Fairchild, DO-201AD package, 800V reverse voltage, 75ns
This diode is available at: Buy

Related information regarding the HDD product line:

  1. For a printable copy of the in-depth 3 page data bulletin including the complete specifications, please visit: hdd-family.pdf
  2. For the product schematic, wiring terminal locations, how to quickly test the HDD, label examples, and more; visit: hdd-dimension-wiring
  3. For an overview of Pulse Width Modulation (PWM) and how it is used; visit: pwm-description
  4. Need more amperage? Use two HDD relays in parallel: dual-mosfet-switching
  5. How to build a H Bridge for dc motor reversing. This also applies to other loads that reverse the polarization of the load, such as some alternative energy applications: h-bridge
  6. How to test for high speed testing? A customer has recommended: picoscope3000. Power-io provides this information only as an example of a high speed, PC based, scope.
  7. How to use a negative control signal, such as -12 VDC? Connect ZERO to terminal 3+, connect -12VDC to terminal 4-. That is viewed as a 12 VDC differential, and it will work fine. You still need >10mA for high speed turn ON/OFF/ON/OFF PWM.
  8. How to use dual IGBTs for 15 kHz switching of an AC load. Visit: dual-igbt-application