JWD-171-21

Turn Off Voltage (Min):	0.5 VDC
Coil Resistance:	200 Ohms
Coil Power:	125 mW
Contact Material:	Ruthenium (Ru)
Operating Temperature:	-35°C ~ 85°C
Termination Style:	PC Pin
Mounting Type:	Through Hole
Features:	--
Release Time:	0.5ms
Operate Time:	1.5ms
Series:	JWD
Turn On Voltage (Max):	3.8 VDC
Switching Voltage:	100VDC - Max
Contact Rating (Current):	500mA
Contact Form:	DPST-NO (2 Form A)
Coil Voltage:	5VDC
Coil Current:	25.0mA
Coil Type:	Non Latching
Part Status:	Active
Packaging:	Tube

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Reed Relays – JWD-171-21 Application Field and Working PrincipleReed relays are one of the most commonly used types of relays in today’s electronic circuits. They are ideally suited for applications that require miniature devices, require low to moderate switching power, and feature improved reliability. The JWD-171-21 is a reed relay offering excellent performance and reliable operation.The JWD-171-21 reed relay consists of a single moving contact and at least one stationary contact housed within a sealed glass tube. The contact-assembly is supported by a spring, typically made of beryllium copper or phosphor-bronze. This combination of spring and contact-assembly is referred to as a reed-armature. The reed-armature is fixed to the base of the glass tube, which is then sealed. An electromagnetic coil is wound onto the base of the tube and serves to move the reed-armatures and open or close the contacts.The field of application for JWD-171-21 reed relays is widely varied, making them very attractive in many designs. This includes applications in data-communications, networking, process-control systems, motor drives, computer peripheral interfaces, medical electronics, power-conversion systems, and more. They are especially suitable for long-life, low-noise applications where high operating speeds are not required. When a current is applied to the coil, a magnetic field is produced which moves the reed-armatures, thereby opening or closing the contacts. When the current is removed, the contact returns to its original position due to the return force of the spring. The contacts remain closed when the coil is energized, and open when the coil is de-energized. This switching action is what powers most applications.The JWD-171-21 reed relay has a variety of features which makes it suitable for many applications. These include its low voltage operation (5V DC max.), high insulation resistance (100M min. at 500V DC), high contact-resistance, and long life (100,000 cycles) and low thermoelectric noise. In addition, the operation time is relatively low (7ms max.) and the contact material is suitable for a wide range of applications. The JWD-171-21 is a reliable and versatile reed relay. It can be used for many applications and is particularly suited for long-life, low-noise applications that require high insulation characteristics and low contact-resistance. Additionally, its small form factor makes it especially well-suited for applications that require a compact device. In conclusion, the JWD-171-21 is a versatile reed relay that is suitable for a wide range of applications. It features excellent performance and reliability due to its low voltage operation, high insulation resistance, long life, low thermoelectric noise, and small form factor. Additionally, its switching action makes it ideal for applications that require reliable and rapid switching.

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