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-7X |
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 |