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MQPI-18 Data Sheet Rev. 1.0 Page 1 of 2

PRELIMINARY

28 Volt Input, 7 Amp MIL COTS EMI Filter for V•I Chips

MQPI-18

Typical Applications

• Military mobile and fixed communications

• Radar and Targeting

• Missile and Launch systems

• Airborne flight management systems

Assembly process compatibility

• Intended for Pb solder SMT assembly

• Compatible with typical aqueous cleaning

processes (open-frame only)

• Compatible with most conformal coating

compounds [after reflow] (open frame only).

Bus+

Bus+

Out+

QPI-12

Out–

Bus–

Cbus

Shield

Shield

Bus–

Cin

Cy2

Cy1

Vi–

Vo–

Vo+

Vi+

Vo+

Vo–

Vi–

Vi+

PRM

VTM

Cbus: 47 uF, 50 V electrolytic in parallel with 2.2 µF, 100 V ceramic.

Figure 1 – MQPI-18 Typical application schematic

Figure 2 – MIL-STD-461, CE102 compliance with MQPI-18 using

28 V input MIL PRM and 12 V output MIL VTM

Description

The MQPI-18 attenuates conducted common-mode

(CM) and differential mode (DM) noise for 28 V input

MIL PRMs to comply with MIL-461E EMI requirements

for conducted noise measurements. The filter operates

within the full input operating range of a 28 V MIL

PRM and supports 7 A loads up to 60°C without

derating.

Features

• 28 V input, compatible with MIL PRM

• MIL-STD-461E compliant* CE101, CE102, CS101,

CS114, C5115, and CS116

• 100 Vdc surge, 100 ms

• 1,500 Vdc hi-pot hold off to shield plane

• 7 A rating

• Efficiency >99%

• Low profile LGA package

• -55°C to 100°C operation (PCB Temp.)

• Pb solder construction

®

MQPI-18

12.9 x 25.3 x 5 mm

Weight = 2.4 grams

*When combined with MP028 PRMs, and MV036 VTMs