
USL Series
0.4 mm Pitch, Insulation-displacement connector (IDC)
The USL series is a 0.4 mm pitch connector for micro coaxial cables (AWG#42). Bulk connection by pressure welding improves the connection reliability and makes the connector compact.
Key Features

Bulk pressure welding improves connection reliability and contributes to miniaturization of devices.
- 0.4 mm pitch, 1.0 mm mated height, and 5.6 mm mating width
- Board side connector is right-angle type; cable side connector is straight type.
- Effective mating length is 0.5 mm.
- Available in 20, 30, and 40 positions
- Lead-free product

Improved Product Strength, Transmission Characteristics, Noise Reduction
- The board-side connector is surrounded by a metal shell to improve noise reduction, product strength, and to strengthen the grounding.
- Ground terminals are provided at multiple points to improve transmission and EMS characteristics.
Specifications
Material & Surface Treatment
Insulator Material | LCP (glass fiber-filled) UL94V-0 material, black |
Contact Material | Copper alloy |
Contact Finish | Nickel-plated base, gold-plated finish |
Shell Material | Copper alloy |
Shell Finish | Nickel-plated base, tin-copper plated finish |
Cover Material | [USL20] LCP (with glass fiber) UL94V-0 material, white |
Ratings
Rated Current | 0.25 A per contact |
Contact Resistance | 100 mΩ or less |
Withstand Voltage | 200 V AC, 1 minute |
Insulation Resistance | 250 V DC, 100 mΩ min. |
Operating Temperature Range | -40 to +85°C |
Applicable Cable | AWG#42 micro coaxial cable |
Product List & Technical Data
Scroll horizontally to view all table content.
Part number | Current rating | Pitch | No. of contacts | Type | Connection type | Recommended cable | No. of packaging | Packaging style | RoHS | Other features | Product drawing | Specification | 3D-CAD (IGS) | 3D-CAD (STEP) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
USL00-20L-A | 0.25 A | 0.4 mm | 20 | Receptacle (PCB side) | Horizontal | – | 500 | Embossed tape | Compliant | – | View | View | Download | Download |
USL00-20L-B | 0.25 A | 0.4 mm | 20 | Receptacle (PCB side) | Horizontal | – | 1,000 | Embossed tape | Compliant | – | View | View | Download | Download |
USL00-20L-C | 0.25 A | 0.4 mm | 20 | Receptacle (PCB side) | Horizontal | – | 3,000 | Embossed tape | Compliant | – | View | View | Download | Download |
USL00-30L-A | 0.25 A | 0.4 mm | 30 | Receptacle (PCB side) | Horizontal | – | 500 | Embossed tape | Compliant | – | View | View | Download | Download |
USL00-30L-B | 0.25 A | 0.4 mm | 30 | Receptacle (PCB side) | Horizontal | – | 1,000 | Embossed tape | Compliant | – | View | View | Download | Download |
USL00-30L-C | 0.25 A | 0.4 mm | 30 | Receptacle (PCB side) | Horizontal | – | 3,000 | Embossed tape | Compliant | – | View | View | Download | Download |
USL00-40L-A | 0.25 A | 0.4 mm | 40 | Receptacle (PCB side) | Horizontal | – | 500 | Embossed tape | Compliant | – | View | View | Download | Download |
USL00-40L-B | 0.25 A | 0.4 mm | 40 | Receptacle (PCB side) | Horizontal | – | 1,000 | Embossed tape | Compliant | – | View | View | Download | Download |
USL00-40L-C | 0.25 A | 0.4 mm | 40 | Receptacle (PCB side) | Horizontal | – | 3,000 | Embossed tape | Compliant | – | View | View | Download | Download |
USL20-20S | 0.25 A | 0.4 mm | 20 | Plug (Cable side) | Horizontal | AWG#42 | 3,000 | Other | Compliant | Cable connection: IDC | View | View | Download | Download |
USL20-30S | 0.25 A | 0.4 mm | 30 | Plug (Cable side) | Horizontal | AWG#42 | 3,000 | Other | Compliant | Cable connection: IDC | View | View | Download | Download |
USL20-40S | 0.25 A | 0.4 mm | 40 | Plug (Cable side) | Horizontal | AWG#42 | 3,000 | Other | Compliant | Cable connection: IDC | View | View | Download | Download |
Standards, Compliance, and Test Results
Download Transmission Characteristics Data
To download Transmission Characteristics Data, complete the form below and press the “Send & Download” button.
Case Studies
Problem
With current FPC, noise interruption will occur, and if counter measures are taken, flexibility of FPC is lost and complicates internal wiring, which leads to defects during assembly.
Solution
The USL series metal shell and multiple ground contacts reduced the micro coaxial cables’ noise, flexibility, and bendability and enabled easy wiring within the device.