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SERIES LL-68500-SM

Surface Mount Units

MIL-STD-1553 Transformers

 

These low profile data-bus transformers are designed with the lowest leakage inductance, to achieve the optimum pulse characteristics in high frequency applications for the commercial, military, and aerospace industries.

SPECIFICATIONS:

  • Performance to MIL-PRF-21038 requirements
  • IMPEDANCE: Minimum value shown in table.
    These values will be met from 75 KHz to 1 MHz over temperature of -55°C to +130°C
  • DROOP:  20% Max.
  • OVERSHOOT: 1V peak
  • COMMON MODE REJECTION (CMR):  45 dB min.
  • DIELECTRIC WITHSTANDING VOLTAGE:   100Vrms
  • INSULATION RESISTANCE:  10K MOhms@100 V DC

 

Series LL-68500-SM
SIZE A

Larger size drawing

Series LL-68500-SM
SIZE B

Larger size drawing

Series LL-6850-SM
SIZE C

Larger size drawing

 

Schematic # 1

 

Larger size drawing

Schematic # 2

 

Larger size drawing

Schematic #3

 

Larger size drawing

 

Recommended Land Pattern
Series LL-68500-SM

 

Larger size drawing

Size A

Recommended Land Pattern
Series LL-68500-SM

 

Larger size drawing

Size B

Recommended Land Pattern
Series LL-68500-SM

 

Larger size drawing

Size C

 

SERIES LL-68500-SM
PICO Part Number Turns Ratio Primary Terminals Secondary Terminals DC- Resistance Impedance Ohms (Min.) Typical Leakage Inductance (uH) Schematic Package Price (1-9 pcs.) (US$)
Terminals  (Ohms) (Min.)
LL-68500-SM

1:1

1:0.707

1-3

1-3

4-8

5-7

1-3

4-8

2.90

1.42

(1-3)

4000

(1-3)

4.7

 1 A 76.43
LL-68505-SM

1.41:1

2:1

1-3

1-3

4-8

5-7

1-3

4-8

2.90

1.08

(1-3)

7200

(1-3)

4.7

 1 A 76.43
LL-68510-SM

1.25:1

1.66:1

1-3

1-3

4-8

5-7

1-3

4-8

2.90

1.20

(1-3)

4000

(1-3)

4.7

 1 A 76.43
LL-68520-SM 1:1.41 1-3 4-6

1-3

4-6

0.82

1.95

(4-6)

3000

(4-6)

2.73

 3 C 76.43
LL-68525-SM 1:1 1-3 4-6

1-3

4-6

2.05

2.14

(1-3)

3000

(1-3)

2.73

 2 C 76.43
LL-68530-SM 1:1.41 1-3 4-6

1-3

4-6

0.80

2.05

(4-6)

3000

(4-6)

2.73

 2 C 76.43
LL-68535-SM 1:1.66 1-3 4-6

1-3

4-6

0.72

2.05

(4-6)

3000

(4-6)

2.73

 2 C 76.43
LL-68540-SM 1:2 1-3 4-6

1-3

4-6

0.52

2.05

(4-6)

3,000

(4-6)

4.5

 2 C 76.43
LL-68545-SM

2.12:1

1.5:1

4-8

5-7

1-3

1-3

1-3

4-8

0.82

2.12

(4-8)

4000

(4-8)

8.0

 1 A 76.43
LL-68550-SM

1:2.5

1:1.79

1-3

1-3

4-8

5-7

1-3

4-8

0.87

2.52

(4-8)

4000

(4-8)

7.1

 1 A 76.43
LL-68555-SM 1:1.5 1-3 4-6

1-3

4-6

0.75

2.05

(4-6)

3000

(4-6)

5.2

 2 C 76.43
LL-68560-SM 1:1.79 1-3 4-6

1-3

4-6

0.71

2.05

(4-6)

3000

(4-6)

5.2

 2 C 76.43
LL-68565-SM 1:2.5 1-3 4-6

1-3

4-6

0.50

2.10

(4-6)

3000

(4-6)

5.2

 2 C 76.43
LL-68570-SM

1:1

1:0.707

1-3

1-3

4-8

5-7

1-3

4-8

2.07

1.32

(4-8)

3000

(4-8)

4.2

 1 B 76.43
LL-68575-SM

1:2.5

1:1.79

1-3

1-3

4-8

5-7

1-3

4-8

0.72

2.75

(4-8)

3000

(4-8)

4.2

 1 B 76.43
LL-68580-SM

2.12:1

1.5:1

4-8

5-7

1-3

1-3

1-3

4-8

0.81

2.82

(4-8)

3000

(4-8)

10.2

 1 B 76.43
LL-68585-SM

1.41:1

2:1

1-3

1-3

4-8

5-7

1-3

4-8

2.07

0.98

(1-3)

3000

(1-3)

4.5

 1 B 76.43

For immediate engineering assistance or to place an order:
Call Toll Free: 800-431-1064

PICO Electronics, Inc.

143 Sparks Ave. Pelham, NY 10803-1810
Tel: 914-738-1400 or Fax: 914-738-8225

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