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HE221C Relay Series
hamlin-electronicsCompact reed relays for PC board mounting with SPDT configuration
The HE221C relay series from Hamlin Electronics is a compact reed relay designed for surface mount applications on printed circuit boards. These relays feature a simple SPDT (Single Pole Double Throw) configuration, making them ideal for switching circuits where a single input can control two separate outputs.
If you're working on projects that require reliable switching in environments with magnetic fields, these relays are a solid choice. Reed relays are known for their fast switching times and low operating voltages, which makes them particularly useful in applications like industrial controls, medical equipment, and automotive systems where space is limited and performance is critical.
One thing worth noting is that engineers often reach for this type of relay when they need a small, robust solution that can handle switching in harsh conditions without the bulkiness of larger relays. The SPDT configuration allows for versatile control scenarios, such as enabling or disabling multiple circuits based on a single signal. Additionally, the compact design means they can be easily integrated into tight PCB layouts, which is a significant advantage in today’s increasingly miniaturized electronics.
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HE221C Relay - Part List
9 parts in total| Mfr Part # | Quantity Available | Price | Category | Lead Time | Subcategory | Release Time | Isolated Power | Current - Carry | Voltage - Supply | Switching Voltage | Contact Resistance | Power - Peak Pulse | Current - Switching | Voltage - Breakover | Voltage - Isolation | Battery Pack Voltage | Insulation Resistance | Mounting Type | Contact Layout, Typical | Type | Card Standard | Operate Time | Mechanical Life | Shock Resistance | Operating Temperature | Case Color | Termination Style | Model | Coil Resistance | Voltage - Input (Min) | Must Release | Must Operate |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 HE221C0550 Reed Relay • Coil Voltage: 5 VDC • Contact Configuration: 1C SPDT • Mounting: PC Board • Switching Current: 0.25 Amps • Switching Voltage: 175 VDC Hamlin | 0 | - | 70 Days | Not Specified | 3.0 ms | Yes | 1.5 AMP | 5 VDC | 175 Volts | 0.150 ohm | 5 W | 0.25 Amps | 200 VDC | 1500 VAC | 1500 VAC | 10^9 ohm | PC Board | 1C SPDT | Relays | Reed Relay | 3.0 ms | 20 G @ 10-2000 Hz. | 50 @ 11 ms, 1/2 sine | -40 to +85 C | Plastic case | End Coil | Standard | - | - | - | - | |
HE221C0590 Reed Relay • Coil Voltage: 5 VDC • Contact Configuration: 1C SPDT • Mounting: PC Board • Switching Current: 0.25 Amps • Switching Voltage: 175 VDC Hamlin | 0 | - | 70 Days | Not Specified | 3.0 ms | Yes | 1.5 AMP | 5 VDC | 175 Volts | 0.150 ohm | 5 W | 0.25 Amps | 200 VDC | 1500 VAC | 1500 VAC | 10^9 ohm | PC Board | 1C SPDT | Relays | Reed Relay | 3.0 ms | 20 G @ 10-2000 Hz. | 50 @ 11 ms, 1/2 sine | -40 to +85 C | Metal case | End Coil | Standard | - | - | - | - | |
HE221C1250 Reed Relay • Coil Voltage: 12 VDC • Contact Configuration: 1C SPDT • Mounting: PC Board • Switching Current: 0.25 Amps • Switching Voltage: 175 VDC Hamlin | 0 | - | 70 Days | Not Specified | 3.0 ms | Yes | 1.5 AMP | 12 VDC | 175 Volts | 0.150 ohm | 5 W | 0.25 Amps | 200 VDC | 1500 VAC | 1500 VAC | 10^9 ohm | PC Board | 1C SPDT | Relays | Reed Relay | 3.0 ms | 20 G @ 10-2000 Hz. | 50 @ 11 ms, 1/2 sine | -40 to +85 C | Plastic case | End Coil | Standard | - | - | - | - | |
HE221C1290 Reed Relay • Coil Voltage: 12 VDC • Contact Configuration: 1C SPDT • Mounting: PC Board • Switching Current: 0.25 Amps • Switching Voltage: 175 VDC Hamlin | 0 | - | 70 Days | Not Specified | 3.0 ms | Yes | 1.5 AMP | 12 VDC | 175 Volts | 0.150 ohm | 5 W | 0.25 Amps | 200 VDC | 1500 VAC | 1500 VAC | 10^9 ohm | PC Board | 1C SPDT | Relays | Reed Relay | 3.0 ms | 20 G @ 10-2000 Hz. | 50 @ 11 ms, 1/2 sine | -40 to +85 C | Metal case | End Coil | Standard | - | - | - | - | |
HE221C2450 Reed Relay • Coil Voltage: 24 VDC • Contact Configuration: 1C SPDT • Mounting: PC Board • Switching Current: 0.25 Amps • Switching Voltage: 175 VDC Hamlin | 0 | - | 70 Days | Not Specified | 3.0 ms | Yes | 1.5 AMP | 24 VDC | 175 Volts | 0.150 ohm | 5 W | 0.25 Amps | 200 VDC | 1500 VAC | 1500 VAC | 10^9 ohm | PC Board | 1C SPDT | Relays | Reed Relay | 3.0 ms | 20 G @ 10-2000 Hz. | 50 @ 11 ms, 1/2 sine | -40 to +85 C | Plastic case | End Coil | Standard | - | - | - | - | |
HE221C2490 Reed Relay • Coil Voltage: 24 VDC • Contact Configuration: 1C SPDT • Mounting: PC Board • Switching Current: 0.25 Amps • Switching Voltage: 175 VDC Hamlin | 0 | - | 70 Days | Not Specified | 3.0 ms | Yes | 1.5 AMP | 24 VDC | 175 Volts | 0.150 ohm | 5 W | 0.25 Amps | 200 VDC | 1500 VAC | 1500 VAC | 10^9 ohm | PC Board | 1C SPDT | Relays | Reed Relay | 3.0 ms | 20 G @ 10-2000 Hz. | 50 @ 11 ms, 1/2 sine | -40 to +85 C | Metal case | End Coil | Standard | - | - | - | - | |
 HE221C7466 Reed Relay • Coil Voltage: 12 VDC • Contact Configuration: 1C SPDT • Mounting: PC Board • Switching Current: 0.25 Amps • Switching Voltage: 175 VDC Hamlin | 0 | - | 70 Days | Not Specified | 3.0 ms | Yes | 1.5 AMP | 12 VDC | 175 Volts | 0.200 ohm | 5 W | 0.25 Amps | 200 VDC | 1500 VAC | 4000 VAC | 10^9 ohm | PC Board | 1C SPDT | Relays | Reed Relay | 3.0 ms | 20 G @ 10-2000 Hz. | 50 @ 11 ms, 1/2 sine | -40 to +85 C | - | - | - | 370 ohms | 9 VDC | 1.2 VDC | 8.4 VDC | |
HE221C8158 Reed Relay • Coil Voltage: 5 VDC • Contact Configuration: 1C SPDT • Mounting: PC Board • Switching Current: 0.25 Amps • Switching Voltage: 175 VDC Hamlin | 0 | - | 70 Days | Not Specified | 3.0 ms | Yes | 1.5 AMP | 5 VDC | 175 Volts | 0.200 ohm | 5 W | 0.25 Amps | 200 VDC | 1500 VAC | 4000 VAC | 10^9 ohm | PC Board | 1C SPDT | Relays | Reed Relay | 3.0 ms | 20 G @ 10-2000 Hz. | 50 @ 11 ms, 1/2 sine | -40 to +85 C | - | - | - | 55 ohms | 7 VDC | 0.3 VDC | 3.5 VDC | |
HE221C8416 Reed Relay • Coil Voltage: 5 VDC • Contact Configuration: 1C SPDT • Mounting: PC Board • Switching Current: 0.25 Amps • Switching Voltage: 175 VDC Hamlin | 0 | - | 70 Days | Not Specified | 3.0 ms | Yes | 1.5 AMP | 5 VDC | 175 Volts | 0.200 ohm | 5 W | 0.25 Amps | 200 VDC | 1500 VAC | 4000 VAC | 10^9 ohm | PC Board | 1C SPDT | Relays | Reed Relay | 3.0 ms | 20 G @ 10-2000 Hz. | 50 @ 11 ms, 1/2 sine | -40 to +85 C | - | - | - | 200 ohms | 14 VDC | 0.4 VDC | 3.5 VDC |