1.8GHz SJ-5B

Query


1.8 GHz SJ-5B/5BS Variable Step Attenuators produce linear loss through the full CATV forward and reverse frequency band. The attenuators are used to balance and adjust amplifier signal levels as needed. The variable step loss produced (dB) is between 0 to 5, 10, 15, 20 dB based on the steps (11 step). The attenuators are designed for circuits up to 1.8 GHz. The attenuators can also be used as equalizers.

Reel packaging is also available for easy SMT assembly (SJ-5BS).


Specifications 

Item

Units

Value

 Attenuation Values

dB

0 - 5

0 - 10

0 - 15

0 - 20

 Step Values

dB

0.5

1.0

1.5

2.0

 Frequency Range

MHz

5 - 1800

 Insertion Loss

dB

≤ 0.5

 Flatness

dB

± 0.3

 Return Loss

dB

≥ 18.0 @ 5-1200MHz

≥ 16.0 @ 1201-1800MHz

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-5B

      

Size

Shaft diameter Ф (mm)

Shaft length L1 (mm)

Pin length L2 (mm)

5

0 and 10

10


SJ-5BS SMD Footprint


Size

Shaft diameter Ф (mm)

Shaft length L1 (mm)

5

0 


PCB Requirement for SJ-5BS

4 holds are required on the corresponding PCB









Ordering Information

Bulk Package Type:

Description

Part Number

 SJ-5B-0.5dB Step, Value 0 - 5 dB, 0mm knob

9903000260

 SJ-5B-1.0dB Step, Value 0 - 10 dB, 0mm knob

9903000261

 SJ-5B-1.5dB Step, Value 0 - 15 dB, 0mm knob

9903000262

 SJ-5B-2.0dB Step, Value 0 - 20 dB, 0mm knob

9903000263

 SJ-5B-0.5dB Step, Value 0 - 5 dB, 10mm knob

9903000264

 SJ-5B-1.0dB Step, Value 0 - 10 dB, 10mm knob

9903000265

 SJ-5B-1.5dB Step, Value 0 - 15 dB, 10mm knob

9903000266

 SJ-5B-2.0dB Step, Value 0 - 20 dB, 10mm knob

9903000267

 

Reel Package Type: 500 Pieces Reel

Description

Part Number

 SJ-5BS-0.5dB Step, Value 0 - 5 dB, 0mm knob

9903000268

SJ-5BS-1dB Step, Value 0 - 10 dB, 0mm knob

9903000269

SJ-5BS-1.5dB Step, Value 0 - 15 dB, 0mm knob

9903000270

SJ-5BS-2dB Step, Value 0 - 20 dB, 0mm knob

9903000271

 

About Us

SQ Electronic Equipment Co., Ltd is a technology enterprise specialized in R&D and manufacturing of CATV and PDU related products. The history of the company goes back to 1991. Originally it was a Shanghai based company（ShangHai QianJin Electronic Equipment Co., Ltd). Due to the rapid development of business activities and customer needs, established a 17000 square meter manufacturing base in Suzhou(Qianjin Electronics (Suzhou) Co., Ltd.). Due to strategic upgrading and development, SQ Electronics (Suzhou) Co., Ltd was established in September 2024 and officially switched, embarking on a new journey of cooperation.

Currently it has about 100 employees. Among them, more than 30% are engineers and technicians. The company has inherited the core team, technology, resources, and experience of the original company, and is committed to further innovation and development on the existing basis.

SQ products are well accepted in the industry because of our high quality and innovative design. Quality is our number one priority, and our goal is to supply world class products through outstanding service to our customers and partners.



Contact

   Address: No. 5 Qidu Avenue Suzhou City Jiangsu Province China(within Qianjin Electronics (Suzhou) Co., Ltd.)

   Phone: 021-54973555

   Email: eddy@sq-cabledevice.com