MCR101 SCR is a sensitive gate silicon controlled rectifier produced by Unisonic. It has reverse blocking diode characteristics. It can be used in various applications that require high current and high reliability, such as relay and lamp drivers, small motor controllers, gate drivers for larger thyristors, and sensing and detection circuits.
The UTC MCR101 is a sensitive-gate silicon controlled rectifier supplied in a plastic TO-92 package. The document describes it as a PNPN device intended for high-volume, line-powered consumer applications including relay and lamp drivers, small motor controls, gate drivers for larger thyristors, and sensing and detection circuits. It lists features such as a sensitive gate, blocking voltage to 600 V, 0.8 A RMS on-state current at 80°C, 10 A surge current capability, and 20 V/µs minimum dV/dt immunity.
Ordering information covers MCR101 variants in TO-92 with gate, anode, and cathode pins, including Pb-free MCR101L versions and peak-voltage suffixes -4 (200 V), -6 (400 V), and -8 (600 V). The datasheet also provides absolute maximum ratings, thermal data, electrical characteristics, a voltage-current characteristic section, classification of IGT ranks, and typical characteristic curves.
| Peak repetitive off-state voltage (MCR101-4 / MCR101-6) | 200 V / 400 V |
|---|---|
| Peak repetitive off-state voltage (MCR101-8) | 600 V |
| On-state RMS current (Tc=80°C) | 0.8 A |
| Peak non-repetitive surge current | 10 A |
| Operating junction temperature | -40 to +110 °C |
| Thermal resistance, junction to case | 75 °C/W |
| Gate trigger current (continuous dc) | 40 to 200 µA |
| Critical rate of rise of off-state voltage | 20 V/µs minimum, 35 V/µs typical |
| Package | TO-92 plastic package |
| Storage temperature | -40 to +150 °C |
It is designed for line-powered consumer applications such as relay and lamp drivers, small motor controls, gate drivers for larger thyristors, and sensing and detection circuits.
The MCR101-8 has a peak repetitive off-state voltage rating of 600 V.
The on-state RMS current rating is 0.8 A at Tc=80°C.
It is supplied in an inexpensive plastic TO-92 package that is readily adaptable for use in automatic insertion equipment.