RI-27 Series Dry Reed Switch

Technical Specifications

Parameters

Test Conditions

Units

RI-27AAA

RI-27AA

RI-27A

Operating Characteristics

Operate Range

AT

10-19

16-25

20-34

Release Range

AT

4-16

5-18

7-19.5

Operate Time - including Bounce (typ.)

ms

0.25

0.25

0.25

Bounce Time (typ.)

ms

0.05

0.05

0.05

Release Time (max)

μs

30

30

30

Resonant Frequency (typ.)

Hz

6700

6700

6700

Electrical Characteristics

Switched Power (max)

W

10

10

10

Switched Voltage DC (max)

V

180

200

200

Switched Voltage AC, RMS value (max)

V

130

140

140

Switched Current DC (max)

mA

500

500

500

Switched Current AC, RMS value (max)

mA

500

500

500

Carry Current DC (max)

A

1.5

1.75

1.75

Breakdown Voltage (min)

V

180

240

280

Contact Resistance (initial max.)

mΩ

115

115

115

Contact Resistance (initial typ.)

mΩ

90

90

90

Contact Capacitance (max)

without test coil

pF

0.3

0.3

0.25

Insulation Resistance (min)

RH ≤ 45%

MΩ

106

106

106

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

11 ms). 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 accor-

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

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

Welding

The leads can be welded.

Mounting

The leads should not be bent closer than 1 mm to the

glass-to-metal seals. Stress on the seals should be avoided

Care must be taken to prevent stray magnetic fields from

influencing the operating and measuring conditions.

USA Tel: +(1)973 777 6900 ▪ BE Tel: + 32 (0)12 390400 ▪ UK Tel: +44 (0)1255 862236 ▪ USA Tel: +(1)401 830 2100 ▪ NL Tel: +31(0)45 5439345

USA Tel: +(1)800 864 2815 ▪ IN Tel: +(91)(44)42023510

Page 2 of 3