SMUN5237DW1T1G

Overview

The SMUN5237DW1T1G is a dual NPN digital transistor manufactured by onsemi, housed in an SC-88 (SOT-363) surface-mount package. It integrates two NPN transistors with built-in bias resistors to simplify circuit design and reduce component count. The device supports a maximum collector-emitter voltage of 50V and a continuous collector current of 100mA per element. Key electrical parameters include a typical base resistor value of 47 kOhms and an emitter resistor of 22 kOhms, yielding a resistance ratio of approximately 2.1. The unit offers a minimum DC current gain (hFE) of 80 at specified test conditions and operates within a temperature range of -55°C to +150°C.

Feature Summary

• Dual NPN configuration with integrated bias resistors for simplified switching applications
• Automotive-grade qualification compliant with AEC-Q100 standards
• Compact SC-88 (SOT-363) surface-mount packaging for space-constrained designs

Applications

• General-purpose switching circuits requiring dual NPN logic interfaces
• Automotive electronic systems meeting AEC-Q100 reliability requirements
• Battery management systems and portable device power control

Procurement Notes

Verify the complete part number including the suffix DW1T1G to ensure correct packaging and automotive qualification status. Confirm RoHS compliance and specific reel quantities during ordering. Cross-reference the manufacturer datasheet for handling instructions regarding moisture sensitivity level 1. Ensure compatibility with automated pick-and-place equipment due to the small SC-88 footprint.

Selection Notes

Select this component when a dual NPN pre-biased solution is required in a compact SOT-363 package. The 47k/22k resistor network suits standard TTL and CMOS logic levels. Consider the 50V VCEO rating for low-voltage signal switching. Verify thermal dissipation capabilities against the 187mW power limit in the final PCB layout.

Part Context

This part belongs to the MUN5237DW1 series of dual NPN digital transistors from onsemi. It shares the same internal schematic as the MUN5237DW1T1G but differs in tape-and-reel packaging specifications. The series is designed to replace discrete resistor-transistor combinations, offering improved board space efficiency and consistent biasing characteristics across production batches.

Replacement Considerations

Direct pin-compatible alternatives within the same family include MUN5237DW1T1G. Other dual NPN devices in SOT-363 packages may require verification of resistor values and hFE gains to ensure functional equivalence in existing designs.