RI-01C SMD Series Dry Reed Switch

Based on standard RI-01C models

ORDERING INFORMATION

RI-01CSMD - 10-15

AT Ranges**

Series

**Customer specific AT ranges are possible. Please contact your

local sales representative.

Coils

All characteristics are measured using the Philips Standard

Coil. For definitions of the Philips Standard Coil, refer to

“Application Notes” in the Reed Switch Technical & Applica-

tion Information Section of this catalog.

Life expectancy and reliability

The life expectancy data given below are valid for a coil

energized at 1.25 times the published maximum operate

value for each type in the RI-01C series.

No load conditions (operating frequency:

100Hz)

Life expectancy: min. 108 operations with a failure rate of

less than 10-9 with a confidence level of 90%.

End of life criteria:

Contact resistance > 1Ω after 2 ms

Release time > 2 ms (latching or contact sticking).

Loaded conditions (resistive load: 12V; 4 mA;

(15 mA peak); operating frequency: 170Hz)

Life expectancy: min. 106 operations.

End of life criteria:

Contact resistance > 2Ω after 4 ms

Release time > 0.7 ms (latching or contact sticking).

Switching different loads involves different life expectancy

and reliability data. Further information is available on

request.

Mechanical Data

Contact arrangement is normally open; lead finish is

tinned; net mass is approximately 100mg; and can be

mounted in any position.

Shock

The switches are tested in accordance with “IEC 68-2-27”,

test Ea (peak acceleration 150 G; half sinewave; duration

11ms). Such a shock will not cause an open switch (no

magnetic field present) to close, nor a switch kept closed

by an 80 AT coil to open.

Vibration

The switches are tested in accordance with “IEC 68-2-6”,

test Fc (acceleration 10G; below cross-over-frequency 57

to 62 Hz; amplitude 0.75 mm; frequency range 10 to

2000 Hz; duration 90 minutes.) Such a vibration will not

cause an open switch ( no magnetic field present) to close,

nor a switch kept closed by an 80 AT coil to open.

Mechanical Strength

The robustness of the terminations is tested in accordance

with “IEC 68-2-21”, test Ua1 (load 10 N).

Operating and Storage Temperature

Operating ambient temperature; min: -55°C; max:

+125°C. Storage temperature; min: -55°; max: +125°C.

Note: Temperature excursions up to 150°C may be

permissible. For more information contact your nearest

Comus Group sales office.

Soldering

The switch can withstand soldering heat in accordance

with “IEC 68-2-20”, test Tb, method 1B: solder bath at

350 ± 10°C for 3.5 ± 0.5 s. Solderability is tested in ac-

cordance with “IEC 68-2-20” test Ta, method 3: solder

globule temperature 235°C; ageing 1b: 4 hours steam.

Through-hole Reed Switches

The attachment method is typically eutectic soldering.

RoHS requires solder with no elemental lead (Pb). SAC

alloy (96,5Sn / 3AG / 0,5Cu) is the most popular choice.

Reed switches can be soldered by hand or by wave sol-

der processing. Comus Technology recommends the

maximum wave solder temperature (measured at the reed

switch leads) as 270°C for 10 seconds. Temperature and

time in excess of the recommended levels may result in

damage to the reed switch. All of our through-hole reed

switches will be compatible with either SAC alloy or

eutectic soldering process.

Surface Mounted Reed Switches

The most common method of attachment is by SMD

processing - stencil/screen solder paste, then oven reflow.

Due to board thickness, component density, and other

circumstances that dictate the required reflow temperature,

Comus Technology uses a higher temperature solder for all

internal connections. We recommend that the temperature

(measured at the reed switch leads) does not exceed 260°C

for 1 minute. Temperature and time in excess of the rec-

ommended levels may result in damage to the reed switch.

USA Tel: +(1)973 777 6900 / Fax: +(1) 973 777 8405 ▪ Belgium Tel: + 32 (0)12 390400

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