Johnstech

Leaded 4mm Test Sockets

Johnstech Leaded 4mm Test Contactor
For QFP, SO, SOIC, SOJ, SOP, PLCC, TSOP, and SOT Applications

Electrical Specifications

Gold-Plated

Electrical Length:

3.55 mm

Inductance:

Self: 0.61 nH
Mutual: 0.27 nH

Capacitance

Ground: 0.92 pF
Mutual: 0.36 pF

S21 (Insertion Loss/Bandwidth):

-1 dB @ 4.6 GHz

S11 (Return Loss/Bandwidth):

-20 dB @ 1.1 GHz

S41 (Crosstalk/Bandwidth):

-20 dB @ 3.0 GHz

Average Contact DC Resistance:

<20 mohm

Current Carrying Capability:

 5.70 A

Current Leakage:

<1 pA @ 10 V

Contact to Decoupling Area:

2.30 mm

Mechanical Specifications

Gold-Plated

Physical Contact Length:

3.95 mm

Physical Compressed Height:

2.79 mm

Typical Contactor Life ( # Insertions):

Elastomers = 100,000 to 500,000 
Contacts = 300,000 to 500,000 
Housing = >1,000,000

Contact Compliance

0.23 mm

Contact Wipe on Lead:

0.10-0.20 mm

Contact Force:

90-120 grams

Contact Tip Coplanarity:

0.05 mm

Environment:

-40°C to 155°C

Housing Material:

Torlon 5030®

Contact Material:

Beryllium Copper Alloy

Note: Depending on Interface
Numbers May Vary

Results from Tin Lead Device Test, 0.50 mm pitch

Manual Actuator

The VMA (Vertical Manual Actuator) and ZMA (Z-Axis Manual Actuator) are available.


Housing Options

Housings are offered in standard handler-specific sizes with custom sizes also available. Contact Johnstech for assistance.


Contact Options

Gold-Plated; Pitches 0.40 mm - 1.27 mm


Grounding Options

STH- S Contacts in Torlon® Housing


Johnstech Services/Resources

Test Floor Technical Support Worldwide Field Service Offices;
First-Pass Yield Enhancement; Performance Audits; Customized Training and Applications Engineering.
Online Tech Support Form at: www.johnstechhelp.com

Engineering Services – Load Board Evaluation & Testing; HFSS 3D Modeling; Electrical Performance Analysis; PCB/Contactor/Device Optimization; Contactor S Parameter & Characterization Data; Thermal Conductivity Analysis and Advanced Design System (ADS) Simulation, Analysis & Optimization.

Website (www.johnstech.com)  – Product, Test, Industry and Support Information; Downloadable, Product SpecSheets; Maintenance & Inspection Guides, Tech Papers and Application Notes.

Your Contact for Higher Performance