Overview
The MCR69-3G is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse Inc. This device is specifically designed for overvoltage protection in crowbar circuits, offering high reliability and stability. The MCR69-3G features a glass-passivated junction, which enhances parameter stability and reliability. It is housed in a rugged TO220AB package, constructed for low thermal resistance and maximum power dissipation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Max. Off-State Voltage (VDRM) | 100 | V |
| Max. Load Current (IT(RMS)) | 25 | A |
| Average On-State Current (IT(AV)) | 16 | A |
| Peak Non-Repetitive Surge Current (ITSM) | 300 | A |
| Gate Current (IGT) | 7 | mA |
| Operating Junction Temperature Range (TJ) | -40 to +125 | °C |
| Storage Temperature Range (Tstg) | -40 to +150 | °C |
| Turn-on Time (tgt) | 1 | µs |
| Package Type | TO220AB | |
| Mounting Type | THT |
Key Features
- Glass-passivated junctions for greater parameter stability and reliability.
- Center-gate geometry for uniform current spreading, enabling high discharge current.
- Small, rugged, Thermowatt package for low thermal resistance and maximum power dissipation.
- High capacitor discharge current capability of up to 750 Amps.
- Pb-free packages available.
- High thermal stability and long service life.
Applications
The MCR69-3G is primarily used for overvoltage protection in crowbar circuits. It is suitable for various industrial and commercial applications where reliable and robust overvoltage protection is essential. These include power supplies, motor control systems, and other high-current applications requiring protection against voltage surges.
Q & A
- What is the maximum off-state voltage of the MCR69-3G?
The maximum off-state voltage (VDRM) of the MCR69-3G is 100V. - What is the maximum load current of the MCR69-3G?
The maximum load current (IT(RMS)) of the MCR69-3G is 25A. - What is the average on-state current of the MCR69-3G?
The average on-state current (IT(AV)) of the MCR69-3G is 16A. - What is the peak non-repetitive surge current of the MCR69-3G?
The peak non-repetitive surge current (ITSM) of the MCR69-3G is 300A. - What is the gate current required for the MCR69-3G?
The gate current (IGT) required for the MCR69-3G is typically 7mA. - What is the operating junction temperature range of the MCR69-3G?
The operating junction temperature range (TJ) of the MCR69-3G is -40 to +125°C. - What is the storage temperature range of the MCR69-3G?
The storage temperature range (Tstg) of the MCR69-3G is -40 to +150°C. - What is the turn-on time of the MCR69-3G?
The turn-on time (tgt) of the MCR69-3G is 1µs. - What type of package does the MCR69-3G come in?
The MCR69-3G comes in a TO220AB package. - Is the MCR69-3G Pb-free?
Yes, Pb-free packages of the MCR69-3G are available.
