SJ-3B/3BS

Query

1.2 GHz SJ-3B/3BS Variable Attenuators produce flat (even) loss across Cable TV forward and reverse frequency band. The attenuators are used during amplifier balancing to adjust amplifier signal levels as needed. The step variable loss produced (dB) is between 0 dB to 10 dB or 0 to 20 dB. The attenuators are rated for operation up to 1.2 GHz. Within specific amplifier types, the attenuators are also used as equalizers. 

Reel packaging with SJ-3SB type, easy for SMT assembly.


 

 Item

Units

Value

 Attenuation Values

dB

0 - 10

0 - 20

 Frequency

MHz

0 - 1200

 Insertion Loss

dB

≤ 1.0

 Return Loss

dB

≥ 12.0

 Impedance

Ω

75

Note: Unless otherwise noted, all specifications reflect typical performance and are referenced to 68°F (20°C). Specifications are based upon measurements made in accordance with SCTE/ANSI standards (where applicable), using standard frequency assignments.

Dimensions

SJ-3B


SJ-3BS



Shaft Size

Shaft diameter Ф( mm )

Shaft length  L ( mm )

5

0, 5, 10


Bulk Package Type:      SJ-3B-10dB, 0 - 10 dB Variable

                                  SJ-3B-20dB, 0 - 20 dB Variable

Reel Package Type:     SJ-3BS-10dB, 0 - 10 dB Variable, 500 piece reel

                     SJ-3BS-20dB, 0 - 20 dB Variable, 500 piece reel

About Us

Shanghai Qianjin Electronic equipment Co., LTD was founded in 1991. It is a scale and specialized CATV equipment manufacturer with research, development and production. Our company, strict compliance with international standards and pass GB / T 9001 quality management system certification.

Our good reputation and perfect product service system has won praise from customers. Products are sold to Europe, America, Asia and other countries and regions, as OEM / ODM supplier.



Contact

   Address: 4/F,Budliding No.2,401 Caobao Road Shanghai China

   Phone: 021-54973555

   Email: eddy@sq-cabledevice.com