MCR100-6 SOT-89 Thyristor

The MCR100-6 SOT-89 Thyristor is a compact sensitive-gate Silicon Controlled Rectifier (SCR) designed for electronic switching, triggering, control and general-purpose thyristor applications. The MCR100-6 SOT-89 Thyristor is available in a surface-mount SOT-89 package, making it suitable for PCB designs where compact size, controlled switching and reliable operation are required.

The MCR100-6 is commonly specified with a 400V repetitive peak off-state voltage and 0.8A RMS on-state current. Current manufacturer and distributor listings also identify SOT-89 versions as sensitive-gate SCRs.

The MCR100-6 SOT-89 Thyristor is a three-terminal semiconductor device. It uses Anode, Cathode and Gate terminals to provide controlled switching. Unlike a standard transistor, an SCR is designed to latch into conduction after suitable gate triggering and remains conducting according to the circuit’s operating conditions until the current falls below its holding requirement.

Sensitive Gate Thyristor

The MCR100-6 SOT-89 Thyristor is designed with a sensitive gate that allows the SCR to be triggered using relatively low gate current. Published MCR100-6 specifications show a maximum gate trigger current of up to approximately 200µA, although the exact value can vary by manufacturer and version.

This sensitive-gate characteristic makes the component useful in control circuits where a low-current signal is used to initiate switching. It can be suitable for electronic control boards, trigger circuits, relay-related applications and other circuits designed around SCR operation.

400V Voltage Rating

A key specification of the MCR100-6 SOT-89 Thyristor is its 400V repetitive peak off-state voltage rating. This allows the device to be considered for appropriately designed higher-voltage switching and control circuits.

The 400V rating should not be interpreted as a recommended continuous operating voltage for every application. Proper safety margin, transient protection, temperature, load conditions and the manufacturer’s complete electrical specifications should be considered when designing a circuit.

0.8A RMS On-State Current

The MCR100-6 SOT-89 Thyristor is commonly specified with an 0.8A RMS on-state current rating. Current component listings for SOT-89 versions specify 800mA maximum RMS on-state current.

The actual operating current should depend on the circuit, PCB design, ambient temperature, thermal conditions and duty cycle. The device should be operated within the manufacturer’s specified limits.

Compact SOT-89 Package

The MCR100-6 SOT-89 Thyristor uses the compact SOT-89 surface-mount package. This package is suitable for PCB assemblies where a relatively small footprint and surface mounting are preferred.

The SOT-89 package makes the MCR100-6 SOT-89 Thyristor useful for:

• Compact PCB designs
• Electronic control boards
• Surface-mount assemblies
• Switching circuits
• Trigger circuits
• PCB repair
• DIY electronics
• Prototyping
• Electronic equipment repair

Current component catalogues identify MCR100-6 versions in SOT-89-3L packaging.

Three-Terminal SCR

The MCR100-6 SOT-89 Thyristor is a three-terminal SCR with:

• Anode (A)
• Cathode (K)
• Gate (G)

The exact physical pin arrangement should be checked against the datasheet for the specific manufacturer’s version before installation. MCR100-6 documentation shows different package diagrams across package variants, so the PCB footprint should always be matched to the supplied component.

Electronic Switching Applications

The MCR100-6 SOT-89 Thyristor can be used in electronic circuits where controlled switching is required. An SCR remains in its blocking state until an appropriate gate trigger is applied. After triggering, it can conduct current between the Anode and Cathode under suitable circuit conditions.

Potential applications include:

• Electronic switching
• Trigger circuits
• Control circuits
• Relay driver circuits
• Lamp control
• Electronic ballast circuits
• Solid-state switching
• Consumer electronics
• Protection and control circuits
• General-purpose thyristor circuits

MCR100-6 documentation describes applications including general-purpose switching, phase-control applications and solid-state relay applications.

PCB Repair and Replacement

The MCR100-6 SOT-89 Thyristor can be useful for electronics repair and replacement work. Technicians can consider this component when repairing a PCB that uses an MCR100-6-compatible SCR.

Before replacing a component, users should compare:

• Device type
• Voltage rating
• Current rating
• Gate trigger current
• Gate trigger voltage
• Holding current
• Package type
• Pin configuration
• Thermal requirements

A replacement should only be used when the electrical and mechanical specifications are compatible with the original component.

DIY Electronics and Prototyping

The MCR100-6 SOT-89 Thyristor can also be used by electronics hobbyists, students and technicians for DIY projects and circuit prototyping.

It can be useful for developing and testing:

• SCR switching circuits
• Gate-triggering circuits
• Electronic control circuits
• Relay control circuits
• Lamp-control circuits
• Protection circuits
• Compact PCB prototypes
• Educational thyristor projects

The device can help demonstrate the basic operating principle of a Silicon Controlled Rectifier and the role of the Gate terminal in controlled switching.

Electrical Specifications

Typical specifications for the MCR100-6 SOT-89 Thyristor include:

• Product: MCR100-6 SOT-89 Thyristor
• Part Number: MCR100-6
• Device Type: SCR / Thyristor
• SCR Type: Sensitive Gate
• Package: SOT-89
• Number of Terminals: 3
• Terminals: Anode, Cathode and Gate
• Repetitive Peak Off-State Voltage: 400V
• RMS On-State Current: 0.8A
• Gate Trigger Current: Up to approximately 200µA, depending on version
• Gate Trigger Voltage: Up to approximately 0.8V, depending on version
• On-State Voltage: Up to approximately 1.7V in referenced versions
• Holding Current: Typically around 5mA for listed SOT-89 versions
• Mounting: Surface Mount
• Application: Switching, triggering, control, PCB repair and DIY electronics
• Brand: Superway
• SKU: SW-MCR100-6-SOT89-THYRISTOR

For final circuit design, always use the datasheet corresponding to the exact manufacturer’s version because electrical specifications can vary between manufacturers.

Product Benefits

The MCR100-6 SOT-89 Thyristor provides several useful characteristics for electronic applications. Its sensitive-gate design allows triggering with relatively low gate current. The 400V voltage rating makes it suitable for appropriately designed high-voltage switching and control circuits, while the 0.8A RMS current rating supports suitable low-current switching applications.

The compact SOT-89 package is useful for surface-mount PCB designs and electronic repair work. Its three-terminal SCR configuration provides a dedicated Gate input for controlled switching.

Superway MCR100-6 SOT-89 Thyristor

The Superway MCR100-6 SOT-89 Thyristor is suitable for electronics repair, PCB replacement, switching circuits, trigger circuits, control applications, DIY electronics and prototyping.

Whether you are repairing an electronic control board or developing a new SCR-based circuit, the MCR100-6 SOT-89 Thyristor can be considered for applications requiring a compact sensitive-gate thyristor, provided the voltage, current, gate and thermal requirements match the circuit.

Important Product Note

The MCR100-6 SOT-89 Thyristor is an SCR/Thyristor, not a transistor. It has three terminals: Anode, Cathode and Gate. Always verify the exact pin configuration and manufacturer’s datasheet before installation, particularly when replacing an existing component.

Applications

The MCR100-6 SOT-89 Thyristor can be used for:

• Electronic switching
• SCR trigger circuits
• Control circuits
• Relay driver circuits
• Lamp-control circuits
• Electronic ballast applications
• Solid-state switching
• PCB repair
• DIY electronics
• Prototyping
• Consumer electronics
• General-purpose thyristor applications

Product Highlights

The MCR100-6 SOT-89 Thyristor combines a compact surface-mount package with sensitive-gate SCR operation, making it suitable for many electronic switching and control applications.