Box Couplers

  • 55 dB CMR
  • Standard triax connectors
  • Ruggedized, sealed cases
  • Excellent EMI shielding
  • Low cost, quick delivery

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Electrical Specification (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%, 2 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%, 2 watt (MIL-R-39007)
Environmental Specifications
Seal Test Immersion MIL-STD-202, Method 104, Condition A
Life MIL-STD-202, Method 108, 2000 Hours (12 Weeks) at 125°C (14v pk-pk, 1 MHz sq. Wave Input at Stub, 100% Duty Cycle and 78 Ohm Bus Termination) 
Vibration, Random 20 Hz - 2000 Hz, 24.0 Grms, 0.5hr/axis
Vibration, Random, Gunfire 300 Hz - 2000 Hz, 64.5 Grms, 0.5hr/axis
Vibration, Sinusoidal 30 Hz - 300 Hz, 0.04 DA, 75 min/axis
Mechanical Shock MIL-STD-202, Method213, Condition I
Thermal Shock MIL-STD-202, Method 107, Condition B, - 65°C to 125°C, 10 Cycles
Moisture Resistance MIL-STD-202, Method 106
Resistance to Solvents MIL-STD- 202, Method 215
Standard Models
No. of Stubs Model No. Conn. Type Mating Conn. Wt. - Grams Bus Terminator Stub Terminator EMI/RFI Cap RFQ RFI Tech Support
1 BC1010 BJ77 PL75 75 RT78-1 RT1.5K-1 RT00-1 RFQ RFI Tech Support
1 BC1020 BJ371 PL375 75 RT78-2 RT1.5K-2 RT00-2 RFQ RFI Tech Support
1 BC1030 BJ157 PL155 75 RT78-3 RT1.5K-3 RT00-3 RFQ RFI Tech Support
1 BC1040 BJ3157 PL3155 75 RT78-4 RT1.5K-4 RT00-4 RFQ RFI Tech Support
2 BC2010 BJ77 PL75 155 RT78-1 RT1.5K-1 RT00-1 RFQ RFI Tech Support
2 BC2020 BJ371 PL375 155 RT78-2 RT1.5K-2 RT00-2 RFQ RFI Tech Support
2 BC2030 BJ157 PL155 155 RT78-3 RT1.5K-3 RT00-3 RFQ RFI Tech Support
2 BC2040 BJ3157 PL3155 155 RT78-4 RT1.5K-4 RT00-4 RFQ RFI Tech Support
3 BC3010 BJ77 PL75 200 RT78-1 RT1.5K-1 RT00-1 RFQ RFI Tech Support
3 BC3020 BJ371 PL375 200 RT78-2 RT1.5K-2 RT00-2 RFQ RFI Tech Support
3 BC3030 BJ157 PL155 200 RT78-3 RT1.5K-3 RT00-3 RFQ RFI Tech Support
3 BC3040 BJ3157 PL3155 200 RT78-4 RT1.5K-4 RT00-4 RFQ RFI Tech Support
4 BC4010 BJ77 PL75 250 RT78-1 RT1.5K-1 RT00-1 RFQ RFI Tech Support
4 BC4020 BJ371 PL375 250 RT78-2 RT1.5K-2 RT00-2 RFQ RFI Tech Support
4 BC4030 BJ157 PL155 250 RT78-3 RT1.5K-3 RT00-3 RFQ RFI Tech Support
4 BC4040 BJ3157 PL3155 250 RT78-4 RT1.5K-4 RT00-4 RFQ RFI Tech Support
6 BC6010 BJ77 PL75 500 RT78-1 RT1.5K-1 RT00-1 RFQ RFI Tech Support
6 BC6020 BJ371 PL375 500 RT78-2 RT1.5K-2 RT00-2 RFQ RFI Tech Support
6 BC6030 BJ157 PL155 500 RT78-3 RT1.5K-3 RT00-3 RFQ RFI Tech Support
6 BC6040 BJ3157 PL3155 500 RT78-4 RT1.5K-4 RT00-4 RFQ RFI Tech Support
8 BC8010 BJ77 PL75 375 RT78-1 RT1.5K-1 RT00-1 RFQ RFI Tech Support
8 BC8020 BJ371 PL375 375 RT78-2 RT1.5K-2 RT00-2 RFQ RFI Tech Support
8 BC8030 BJ157 PL155 375 RT78-3 RT1.5K-3 RT00-3 RFQ RFI Tech Support
8 BC8040 BJ3157 PL3155 375 RT78-4 RT1.5K-4 RT00-4 RFQ RFI Tech Support

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