PRELIMINARY

MM158

DISCHARGE: 200 A

CHARGE: 50 A

SHORT: 400A

Features

• Designed for use with NiH battery cells on spacecraft

• Thermally activated non-dissipative permanent battery bypass

• Charge/discharge diodes are replaced by a permanent

low resistance short to bypass cell after open failure

• Compact, rugged construction offers weight and cost savings

• Can modify leads, available in different lengths

• Radiation tolerant to 300 Mrad total dose

• Discrete diodes screened and qualified per Microsemi PS11.50

• Multiple shorting points for redundant short activation

PART NUMBER

SYMBOL

MAX.

UNIT

Discharge Current

ID

200

Amps

Charge Current

IC

50

Amps

Non-Rep Peak Surge Current (discharge)

IDSM

1000

Amps

Non-Repetitive Peak Surge Current (charge)

ICSM

350

Amps

Operating and Storage Junction Temperature Range

Tj

Tstg

-55 to +175

°C

Thermal resistance, junction to lead, discharge,

measured at lead adjacent to cover

R

Θ jLD

0.5

°C/W

Thermal resistance, junction to lead, charge,

measured at lead adjacent to cover

R

Θ jLC

1.0

°C/W

Maximum Ratings @ 25

°C (unless otherwise specified)

Mechanical Outline

Datasheet# MSC0945.PDF

2830 S. Fairview St.

Santa Ana, CA 92704

PH: (714) 979-8220

FAX: (714) 966-5256

BATTERY CELL

BYPASS/SHORTING

MODULE