MC1413BDR2

Overview

The MC1413BDR2G is a high-voltage, high-current NPN Darlington transistor array manufactured by onsemi. It integrates seven independent Darlington pairs within a single SOIC-16 package. Each channel features an internal 2.7 kΩ series input resistor, facilitating direct interfacing with 5.0 V TTL and CMOS logic circuits without external base resistors. The device provides a maximum continuous collector current of 500 mA per channel and supports a collector-emitter breakdown voltage of 50 V. Internal suppression diodes are connected to the common emitter pin to manage inductive load flyback currents.

Feature Summary

• Integrates seven NPN Darlington-connected transistors with built-in 2.7 kΩ base resistors for simplified logic interface.
• Includes internal clamp diodes at the common emitter terminal to suppress voltage spikes from inductive loads.
• Designed for high-voltage operation with a 50 V collector-emitter rating suitable for driving relays and lamps.

Applications

• Driving incandescent lamps and indicator lights
• Actuating electromagnetic relays
• Operating printer hammers and solenoids

Procurement Notes

Verify the specific suffix against the manufacturer's official ordering guide. The 'B' variant specifies a -40°C to +85°C operating range, distinct from the standard MC1413. Confirm RoHS compliance status and check for discontinuation notices, as certain revisions or prefixes may be obsolete. Ensure the package matches the required thermal and mechanical constraints for the target PCB layout.

Selection Notes

Select this component when a multi-channel driver is required for moderate-power loads directly controlled by low-voltage digital logic. The integrated input resistors reduce bill-of-materials count compared to discrete solutions. Consider the thermal resistance characteristics if multiple channels operate simultaneously near the 500 mA limit. Verify that the 50 V output voltage rating exceeds the maximum load supply voltage in the application circuit.

Part Context

This part belongs to the MC1413 family of high-voltage Darlington arrays. It serves as a robust interface between microcontrollers or logic gates and higher-power actuators. The SOIC-16 surface-mount configuration allows for compact board designs in industrial control modules and consumer electronics where space efficiency is critical.

Replacement Considerations

The ULN2003A is a functional equivalent offering similar Darlington array capabilities. Note that the ULN2003A typically utilizes a 2.7 kΩ input resistor configuration but may differ in specific saturation voltages and packaging options. Verify pinout compatibility and thermal performance before substitution.