MICRO IN-LINE COUPLERS

  • Industry's smallest and lightest bus couplers
  • EMI and EMP shielding standard
  • 55 dB CMR
  • Standard cable M17/176-00002
  • Other cable types available
  • Environmental sleeve per MIL-DTL-23053/5
  • Flight rated
  • Bus & Stub cable markers
  • MIL-STD-1553 A or B designs available

Electrical Specifications (In accordance with MIL-STD-1553B)

Transformer turns ratio (N) 1.41:1 (+/-3%)
Transformer droop < 20%
Overshoot & ringing < +/- 1v pk-pk
Common mode rejection > 55 dB at 1MHz
Fault isolation resistance (R1, R2, ...) 59.0 Ohms, 1%, 1 watt (MIL-R-39007)
Operating temperature -55°C to +125°C
Construction CRS case, tin-lead plated and painted for 100% EMI & environmental seal
Bus termination resistor 78.7 Ohms, 1%, 1 watt (MIL-R-39007)
1553B Bus Coupler Schematic (4 stub coupler)

Environmental Specifications

Random Vibration MIL-STD-202, Method 204, condition B, 12 hours per axis
Mechanical Shock MIL-STD-202, Method 213, condition I
Pull strength 12 lbs. on each cable
Thermal Shock MIL-STD-202, method 107, condition B, -65°C to +125°C, 10 cycles
Life MIL-STD-202, method 108, 1000 hours at 125°C (14 V pk-pk, 1 MHz sq. wave input at stub, 100% duty cycle and 78 Ohm Bus termination)
Moisture Resistance MIL-STD-202, method 106
Resistance to Solvents MIL-STD-202, method 215
Altitude > 250,000 ft. operational
Thermal Vacuum 10E-5 mm Hg, operational and -90°C to +71°C
Surface Transfer Impedance 20 milli Ohms/Meter Max for single shield cable and 10 milli Ohms/Meter Max for double shield cable

Standard Models

No. of stubs Model no. Coupler body dimensions (inches) incl. Environmental jacket Wt. excl. cable (grams) Price Request
1 BC0010 0.465x0.655x0.880 8 RFQ
2 BC0020 0.465x0.655x1.800 16 RFQ
3 BC0030 0.560x0.850x2.400 25 RFQ
4 BC0040 0.560x0.850x2.400 35 RFQ
6 BC0060 0.760x1.160x2.960 60 RFQ
8 BC0080 0.760x1.160x2.960 80 RFQ
10 BC0100 0.760x1.160x2.960 100 RFQ

Available with single and dual internal bus terminations. Add -1R or -2R to the basic part number for single or dual termination.

Qualified designs available for various environmental conditions. Send your requirements to info@paaltech.com for a quick quote.