Features: 270 Vdc Input MIL-STD-704E/F compliant 235 Watt (360 Watt for 1 ms) ZVS / ZCS isolated sine amplitude converter Typical efficiency 96% <1 µs transient response >3.5 million hours MTBF No output filtering required
Power Density:	829 W/in3
Operation:	–55°C to 125°C operation
Dimensions per module:	1.1 in2 (7.1 cm2)
Part Numbers:	VMB0004MFJ (J-Lead) VMB0004MFT (Through Hole)

The MIL-COTS Bus Converter Module (BCM) is a high efficiency (>96%), Sine Amplitude Converter (SAC) operating from MIL-STD-704E/F 270 Vdc and delivering an isolated 30.0 – 41.3 Vdc. The BCM is suitable for use with the MIL-COTS PRM–Regulator and VTM–Current Multiplier, and is ideal for aircraft distributed power applications.

The BCM achieves a power density of 829 W/in³ in a V•I Chip package compatible with standard pick-and-place and surface mount assembly processes. The V•I Chip package provides flexible thermal management through its low junction-to-case and junction-to-board thermal resistance. Owing to its high conversion efficiency and safe operating temperature range, the BCM does not require a discrete heat sink in typical applications. Low junction-to-case and junction-to-lead thermal impedances assure low junction temperatures and long life in the harshest environments.