Product # MQHE-28E-P

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-0005151 Rev. G

05/27/16

Page 9

MQHE-28E-P

Technical Specification

VOLTAGE SURGE AND SPIKE COMPLIANCE MATRIX

These tables show the Voltage Surge and Spike requirements/limits that have been met* by a stand-alone setup comprised of:

- MQME-28-P (or –T) Filter

- MQFL-28-05S DC/DC Converter

- 120W Resistive Load

- Metal Chassis Plane

* Surge/spike requirements/limits are deemed to have been met as long as transient deviations in the converter’s output voltage

remain within ±10% of its initial value.

§ These are defined as the maximum disturbances that equipment can inflict upon the power system, not as disturbances imposed

upon utilization equipment. To ensure compatablitily, however, these are within the designed stress envelope of the indicated filters &

converters.

† For the DEF STAN 61-5 specification:

1) Negative surges require reverse voltage protection circuitry to protect the converter (but not the filter) from a negative input.

This circuitry is included in the MQME-28-T but not the MQME-28-P and MQHE-28-P filters.

2) The negative surges may cause the converter to shut down unless additional holdup capacitance is included.

3) Maximum spike voltages are assumed to last <1µs

Vehicle 28Vin

Part

Worst Case Over-Voltage Surge

(Voltage/Duration)

Short Duration Spikes

(Voltage/Duration/Impedance)

MIL-STD-1275D

(Gen. + Bat.)

40V / 50ms

±250V / 15mJ / 0.5Ω

(Bat. only)

100V / 50ms

(Gen. only)

100V / 50ms

DEF STAN 61-5 (PART 6)/5†

(Gen. + Bat.)

40V / 50ms

+130V to -100V max §

+90V to -60V / 10µs §

+70V to -40V / 5ms §

(Bat. Only)

+70V to -40V / 5ms §

(Bat. Only, Non-Regen. Ld. Sw.)

80V / 80ms §

(Bat. Only, Regen. Ld. Sw.)

40V / 50ms

(Gen. only)

80V / 80ms §

100V / 50ms

+110V to -50V / 5ms §

+280V to -220V max §

+130V to -70V / 10µs §

DEF STAN 61-5 (PART 6)/6†

DIT08.B, DIT07.B

+174V / 350ms

±200V / 200ns / 50Ω

DET03.A

40V / 50ms §

+90V to -60V / 10µs §

DET04.A

+70V to -40V / 1ms §

DIT04.A

+110V / 300ms §

Aircraft 28Vin

Part

Worst Case Over-Voltage Surge

(Voltage/Duration)

Short Duration Spikes

(Voltage/Duration/Impedance)

MIL-HDBK-704-8

(704A)

80V / 50ms

N/A

60V / 550ms

(704B, C, D, E, F)

50V / 50ms

RTCA/DO-160E

(Cat A)

47V / 100ms

±600V / 10µs / 50Ω

38V / 1s

(Cat B)

60V / 100ms

±200V / 10µs / 50Ω

40V / 1s

(Cat C)

80V / 100ms

N/A

48V / 1s

Met by any Hi-Rel Filter

Met by an MQME-28-T Filter having the Transient Suppression

and Reverse Polarity Protection Features

Met by MQME-28E-T6 Filter Only:

Performance Criteria C