1. Packaging forms: direct insertion (THT), surface mount (SMD), lead type, socket rail type, etc.

2. Contact Form: 1a, 1b, 1c, 1a+1b, 2a, 2b, 2c, etc.

3. Input voltage (coil voltage, driving voltage): DC3.3V、DC4.5V、DC5V、DC9V、DC12V、DC24V、DC36V、DC48V、DC110V、AC5V、AC24V、AC48V、AC110V、AC220V Wait. The listed values are the nominal values of the coil, but in reality, the coil voltage often has a certain range, within which the reed relay can operate stably.

4. Load voltage: Unit VDC or VAC, the actual load voltage should be equal to or lower than the rated load voltage.

5. Load current: Unit: A， Adequate margin should be left.

6. Switching voltage (Max): Unit A, the maximum voltage that the contact can withstand when the switch is activated.

7. Switching current (Max): Unit VDC or VAC, the maximum current that the contact can withstand when the switch is activated.

8. Rated power: The load power that can operate normally and reliably under both rated current and rated voltage.

9. Breakdown voltage: breakdown voltage between input and output, shell and input/output, and output terminals.

10. Suction value (PI value): Pull-in Value， The product of the current required for coil excitation driving and the number of coils represents the sensitivity of the reed switch. The lower the PI value, the higher the sensitivity of the reed switch. Unit: AT。

11. Disconnected value (DO value): Drop-out Value， The product of the current flowing through the coil when the contact is released and the number of coils, unit: AT。

12. Contact impedance (CR value): The impedance between two terminals when the contact is closed, including the resistance of the wire part, in meters Ω.

13. Open circuit impedance (OR value): The impedance between two terminals, including the resistance of the wire part, when the contact is disconnected, measured in M Ω.

14. Contact capacitance: Contact Capacitance， The static capacitance between the contacts during the release of the contacts, unit: pF。

15. Insulation impedance: Insulation Resistance， The insulation impedance between the two terminals of the reed switch, unit: M Ω.

16. Action time: Operate Time， The time from applying voltage to the excitation coil to the contact action, unit: S。

17. Release time: Release time， Excluding the time from the voltage applied to the excitation coil until the contact returns, unit: S。

18. Working temperature: Different product grades such as consumer grade, communication grade, industrial grade, military grade, aerospace grade can be distinguished based on their working temperature.

19. Protection level: Protection level is often expressed by IP followed by two numbers, which are used to clarify the level of protection.

Pay attention to distinguishing between milliohms mΩ and megaohms mΩ.