Pad ROL® 100A

The Pad ROL® 100A offers the best-in-class electrical performance for testing your most demanding RF and microwave
communications devices to 40 GHz. Whether you’re performing engineering tests on high gain RF amplifiers, RF transceivers, or other 3G/4G/5G devices, the Pad ROL® 100A delivers. Engineered with robust mechanical performance, the Pad ROL® 100A meets your most demanding production needs for higher First Pass Yield, longer MTBA, resulting in lower cost of test. New contact designs for 0.3mm and ≥ 0.5mm pitches provide longer contact life and longer MTBA for testing your QFN and DFN matte tin and NiPdAu packages.

Johnstech International also offers a 50 ohm controlled impedance solution called the ROL 100A-Z50.

Features & Benefits (0.5 Pitch)
Frequency 40GHz Matte Tin; 39.9GHz NiPdAu
Pitch ≥ 0.3mm
Temperature -40°C to 155°C
Current Carrying Capability @ 100% 3.1A Matte Tin; 2.6 NiPdAu

Production Test

The self-cleaning wipe action of the “rolling contact” design provides many benefits for Production Test:

  • Consistent Contact Resistance 
  • Optimized Electrical Performance
  • Higher First Pass Yield 
  • Repeatable Site-to-Site Performance
  • Longer MTBA (Mean Time Between Assists)
  • Prolonged Load Board Life
  • Simple Maintenance & Rebuilding
  • Improved OEE (Overall Equipment Efficiency)
  • Lower Overall Cost of Test


Pad ROL®100A Contactors are ideal for Manual Device Evaluation, Lab Testing, Prototyping and Characterization

  • Designed to test to 40 GHz.
  • Reliable and repeatable results
  • Lab Performance correlates to Production Test Floor
  • Robust Manual Actuator life of 10k+ insertions

Pad Series Grounding Options

RTH or STH – Contacts in Housing

The standard grounding for most Johnstech contactors utilize contacts, either S-shaped (STH) or ROL® shaped (RTH) test contacts configured in the Torlon housing directly beneath the center of the device package ground pad. Johnstech self-cleaning wipe technology provides improved MTBA (mean time between assists) and lower ground inductance.

Insert Technologies

In addition to ground contacts in the contactor housing, Johnstech offers ground inserts that can be removed from the contactor housing itself and interchanged as application requirements change. These ground inserts are used for both grounding and thermal requirements.

RCI or SCI – Contacts in Copper Insert

This insert configuration utilizes multiple contacts in a metal insert to meet the low ground inductance and thermal requirements of the most demanding applications. Available with either S contacts (SCI) or with ROL® contacts (RCI).

CI – Copper Insert

This insert can be used for optimum grounding and thermal requirements during characterization testing where a device might need to be powered up for an extended period of time to determine steady state performance.