Aleph Dry Reed Switches
Contact
Form
Form "A" (Normally Open)
Switch contacts will close in the presence of a magnetic field.
Form
"C" (Single Pole, Double Throw)
Form "C" switches have transfer mode contacts.
When a magnetic field is applied, the common contact will be transferred
from the normally closed (N.C.) contact to the normally open (N.O.)
contact.
Contact Material
Rhodium
Rhodium plated contacts are most popular. They have very stable
characteristics and long life when switching low level to heavy
loads. This is due to Rhodium's high melting point and high hardness.
Ruthenium
Ruthenium's hardness is even greater than that of Rhodium. Ruthenium
contacts have better mechanical wear and heat dissipation characteristics,
yet only when switching low loads.
Because of these characteristics ALEPH has developed a double
plated contact with Ruthenium Oxide over Rhodium or Palladium.
These double plated contacts have very good switching characteristics
from low level to heavy loads.
Selection Guide
| Part
No. |
Description |
Figure |
| HYR
1532 |
General application
switches
Switching power rating of 10 watt. Applications are wide including
switching signal loads, driving electromechanical relays,
etc. |
 |
| HYR 1508 |
|
| HYR 1552 |
|
| RD-7B |
|
| HYR
2004 |
 |
| RD-76 |
Ultraminiature
switches
With glass capsule length of 7 to 12mm. These switches use
very little space. Applications include miniature reed relays,
keyboards, etc. |
 |
| RD-75AA |
| RD-9B |
| HYR
1003 |
HYR
1501
(for 110 VAC) |
High power switches
Switching power rating between 20 and 70 Watt. May be used
for directly switching power line voltages, i.e. 1 10 VAC
or 220 VAC. |
 |
HYR
2003-1
(for 220 VAC) |
 |
HYR
2003-2
(high power) |
HYR
2016
(for more than 220 VAC) |
 |
| HYR
1559 |
High voltage breakdown
switches
Breakdown voltage rated up to 2,500 Volt. |
 |
| HYR
2016 |
|
| HYR
1536 |
High inrush current
switches
May be used for switching incandescent lamp or capacitive
loads without external current limiting resistors. |
 |
| RD-8N |
|
|
| RD-8B |
| HYR
1555 |
Form "C"
switches
Feature break-before-make, single pole double through (SPDT)
contacts. |
 |
| RD-18A-S001 |
Surface Mount (no case) |
|
| RD-9A-S002 |
| RD-7B-S002 |
| NRS-701A |
Surface Mount with Plastic Case |
|
| NRS-771 |