Motorola Thyristor Device Data is a data document about Motorola thyristor devices. The document describes the features and applications of reverse blocking thyristors, such as half-wave AC control, motor control, heating control, and power supply crowbar circuits. The device has glass passivated junctions, low thermal resistance, high heat dissipation, and durability. It has a blocking voltage of up to 800 volts and a surge current capability of 80 amps. The insulated package simplifies mounting. The document also provides the maximum ratings of the device.
Motorola MCR218FP Series reverse blocking thyristors are designed primarily for half-wave ac control applications such as motor controls, heating controls and power supply crowbar circuits. The devices feature glass passivated junctions with center gate fire, Thermowatt construction, blocking voltage to 800 volts, 80 A surge current capability and an insulated package.
The document gives maximum ratings, thermal and electrical characteristics, typical characteristic curves and package dimensions. The series includes the MCR218-2FP, MCR218-4FP, MCR218-6FP, MCR218-8FP and MCR218-10FP types with 50, 200, 400, 600 and 800 volt blocking-voltage ratings, supplied in Case 221C-02, Style 2 as isolated SCRs rated 8 amperes RMS.
| Peak repetitive forward and reverse blocking voltage | 50, 200, 400, 600, 800 V by type |
|---|---|
| On-state RMS current | 8 A at TC = +70°C |
| Peak nonrepetitive surge current | 80 A |
| Circuit fusing | 26 A²s |
| RMS isolation voltage | 1500 V |
| Operating junction temperature | -40 to +125 °C |
| Thermal resistance, junction to case | 2 °C/W |
| Peak gate power | 5 W |
| Average gate power | 0.5 W |
| Peak gate current | 2 A |
It spans 50 to 800 volts peak repetitive forward and reverse blocking voltage, with five type variants.
The on-state RMS current rating is 8 amps at a case temperature of +70°C.
Style 2 has pin 1 as cathode, pin 2 as anode and pin 3 as gate.
The peak nonrepetitive surge current is 80 amps for one full cycle at 60 Hz.