MMDT5451-TP

Overview

The MMDT5451-TP is a dual transistor array in a SOT-363 package, containing one NPN and one PNP silicon epitaxial transistor. It operates with a continuous collector current of 200 mA and power dissipation of 200 mW. The NPN section supports a collector-emitter voltage (VCEO) of 160 V and a collector-base breakdown voltage (V(BR)CBO) of 180 V. The PNP section provides a VCEO of -150 V and a V(BR)CBO of -160 V. Both transistors exhibit a transition frequency (fT) ranging from 100 to 300 MHz. The device functions within an operating junction temperature range of -55°C to +150°C and meets RoHS compliance standards.

Feature Summary

• Halogen-free green device construction
• Moisture sensitivity level 1 classification
• Epoxy material meets UL 94 V-0 flammability rating

Applications

• General purpose switching applications
• Small signal amplification circuits
• Digital logic interface stages

Procurement Notes

Verify the ordering suffix matches the required packaging configuration. The standard TP designation indicates tape and reel packing with 3,000 pieces per reel. Confirm RoHS compliance requirements if the 'P' suffix is necessary for specific regulatory adherence. Ensure the supplier is an authorized distributor to guarantee genuine parts and full traceability as mandated by the manufacturer.

Selection Notes

Select this component when space-constrained designs require complementary NPN/PNP pairs in a single surface-mount footprint. The SOT-363 package offers a compact solution for low-power signal processing. Verify that the required voltage ratings of 160 V for NPN and 150 V for PNP exceed the circuit's maximum operational stresses. Consider the thermal resistance of 625 °C/W when designing heat dissipation strategies for high ambient temperatures.

Part Context

This part belongs to Micro Commercial Components' plastic-encapsulated transistor series. It utilizes a monolithic structure integrating two distinct bipolar junction transistors into one housing. The internal pinout connects the collectors together or separately depending on the specific application wiring, typically arranged for common emitter configurations. The marking code KNM identifies the specific manufacturing batch and date code.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Engineers must consult official cross-reference lists or manufacturer guidelines to identify compatible alternatives. Ensure any replacement maintains identical pinout compatibility, voltage ratings, and package dimensions to prevent board redesign.