Called the 111 Series, they all 6.6mm high and cover an area 3.7 x 10mm.

There is a base model (111), a low-cost version (111P) and an RF version designed for switching up to 1.5GHz (111RF).

111 and 111RF come in a metal can package, while 111P is in a plastic package that has an internal mu-metal screen.

“The magnetic screening greatly reduces magnetic field interaction effects that occur when non-screened reed relays are densely packed side by side.  This permits lower drive, higher packing densities and tighter contact resistance control, as the coil maintains the contact closure force with little external magnetic influence,” the firm told Electronics Weekly.

111 and 111P have four pins spaced at 2.54mm, while, to accommodate the internal coaxial screened path, the 111RF has two ground pins – bringing the pin count to six at a 1.5mm spacing.

Coils are 5V (500Ω) or 3V (200Ω), with or without an internal diode.

Capacitance is 1.5pF max for both closed-switch-to-coil and across-open-switch (other connections guarded).

Maximum initial contact resistance is 150mΩ with a typical life expectancy of 10⁸ operations, company spokeswoman Poppy Moore told Electronics Weekly: that’s “31 years at 1Hz.”
This is with an end-of-life contact resistance of 1Ω, switching 10V at 10mA (resistive) or ‘cold’ switching, which drops to 10⁶ operations at maximum resistive load.

Insulation resistance is >10¹²Ω and maximum contact voltage is 170V.

Standard operating temperature is across -20 to +85°C, however +125°C operation can be achieved if the coil drive voltage is increased to accommodate the resistance/temperature coefficient of the copper coil winding. This is approximately 0.4% per °C.

Compliant internal construction, branded SoftCenter, increases reliability by reducing forces on the internal glass envelope across the temperature range.

A maximum of 20G (gravity) vibration and 50G shock can be withstood.

If more power has to be handles in the same footprint, the taller Series 110 and Series 112 are available.

Pickering reed relay products are available in the UK from Rapid Electronics or Pickering’s Essex factory.