Littelfuse Power & Signal Relays 90

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Part	Manufacturer	Relay Type	Mounting Feature	Relay Action	Relay Function	Coil or Input Supply Type	Relay Form	Operate Time	Maximum Contact DC Power Rating (R Load)	Release Time	Insulation Resistance	Coil Power (mW)	Packing Method	Body Length/Diameter	Body Width	Coil Resistance	Sealing	No. of Terminals	Physical Dimension	Body Height	Maximum Contact DC Rating (R Load)	Maximum Operating Temperature	Maximum DC Coil Current	Minimum Operating Temperature	DC Coil Release Voltage	Maximum DC Contact Current	Termination Type	Nominal Coil Voltage	DC Coil Operate Voltage	Manufacturer Series	Contact Resistance	Input Switching Control Type	PCB Hole Count	Maximum DC Contact Voltage	Terminal Length	Maximum DC Coil Voltage	Contact or Output Supply Type
02040709Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										30 A							020407						12 V	DC
02040703TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC							Bulk										30 A							020407						12 V
HE3351A1240	Littelfuse	Power/Signal Relay																												HE3351
02040712TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC							Bulk										20 A							020407						24 V	DC
02040505Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										30 A							020405						24 V	DC
HE3351A1200	Littelfuse	Power/Signal Relay	Through Hole-Straight Mount	Momentary	SPST	DC		1 ms		1 ms		288 mW		0.95 in (24.13 mm)	7.62 in (193.548 mm)	500 Ω	Hermetically Sealed		0.95 x 0.3 x 0.335 in (24.13 x 7.62 x 8.51 mm)	0.335 in (8.51 mm)	0.5A@300VDC	85 °C (185 °F)	24 mA	-20 °C (-4 °F)	1 V	500 mA	Solder		9 V					300 V		12 V	DC
02040609TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										25 A							020406						12 V	DC
02040608TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC							Bulk										15 A							020406						24 V	DC
HE3321C2400	Littelfuse	Power/Signal Relay	Through Hole-Straight Mount	Momentary	SPDT	DC		3 ms		3 ms		288 mW		0.95 in (24.13 mm)	7.62 in (193.548 mm)	2 kΩ	Hermetically Sealed		0.95 x 0.3 x 0.335 in (24.13 x 7.62 x 8.51 mm)	0.335 in (8.51 mm)	0.25A@175VDC	85 °C (185 °F)	12 mA	-40 °C (-40 °F)	2 V	250 mA	Solder		18 V					175 V		24 V	DC
HE3321C0540	Littelfuse	Power/Signal Relay																												HE3321
02040604TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC							Bulk										15 A							020406						24 V	DC
HE3351A2400	Littelfuse	Power/Signal Relay	Through Hole-Straight Mount	Momentary	SPST	DC		1 ms		1 ms		288 mW		0.95 in (24.13 mm)	7.62 in (193.548 mm)	2 kΩ	Hermetically Sealed		0.95 x 0.3 x 0.335 in (24.13 x 7.62 x 8.51 mm)	0.335 in (8.51 mm)	0.5A@300VDC	85 °C (185 °F)	12 mA	-20 °C (-4 °F)	2 V	500 mA	Solder		18 V					300 V		24 V	DC
HE3351A0540	Littelfuse	Power/Signal Relay																												HE3351
02040502Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										50 A							020405						12 V	DC
02040603TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC							Bulk										20 A							020406						12 V	DC
02040701Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										30 A							020407						12 V
HE3321A0540	Littelfuse	Power/Signal Relay																												HE3321
02040606Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										10 A							020406						24 V	DC
02040502TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										50 A							020405						12 V	DC
02040503TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										50 A							020405						24 V	DC
02040612Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC							Bulk										15 A													24 V
02040703Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC							Bulk										30 A							020407						12 V	DC
HE3321A2440	Littelfuse	Power/Signal Relay																												HE3321
HE3321C0500	Littelfuse	Power/Signal Relay	Through Hole-Straight Mount	Momentary	SPDT	DC	1 Form C	3 ms	5W@175VDC	3 ms	10 GΩ	200 mW		0.95 in (24.13 mm)	7.62 in (193.548 mm)	125 Ω	Hermetically Sealed	5	0.95 x 0.3 x 0.335 in (24.13 x 7.62 x 8.51 mm)	0.335 in (8.51 mm)	0.25A@175VDC	85 °C (185 °F)	40 mA	-40 °C (-40 °F)	500 mV	250 mA	Solder	5 V	3.75 V		200 mΩ	Random	5	175 V	0.1181 in (3 mm)	5 V	DC
02040702TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										20 A							020407						24 V	DC
02040716Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC							Bulk										40 A							020407						12 V	DC
02040602Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										10 A							020406						24 V	DC
02040611Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC							Bulk										20 A							020406						12 V	DC
02040715Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										40 A							020407						12 V	DC
02040707TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC							Bulk										30 A							020407						12 V	DC
02040611TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPDT	DC							Bulk										20 A							020406						12 V	DC
02040501TXN	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										70 A							020405						12 V	DC
02040706Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										20 A							020407						24 V	DC
02040710Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										20 A							020407						24 V	DC
02040601Z	Littelfuse	Power/Signal Relay	Panel Mount	Momentary	SPST	DC							Bulk										25 A							020406						12 V
90295	Littelfuse	Power/Signal Relay
90292	Littelfuse	Power/Signal Relay
90290	Littelfuse	Power/Signal Relay
90293	Littelfuse	Power/Signal Relay
90291	Littelfuse	Power/Signal Relay
90370	Littelfuse	Power/Signal Relay
90294	Littelfuse	Power/Signal Relay

Power & Signal Relays

Power and signal relays are electromechanical switches that are used to control power circuits and signal circuits respectively. Power relays are designed to handle higher voltages and currents, typically in the range of several hundred volts and amperes. They are commonly used in industrial and automotive applications to switch on/off motors, heaters, lights, and other high-power loads. Signal relays, on the other hand, are designed to handle lower voltages and currents, typically in the range of several volts and milliamperes. They are commonly used in electronic equipment such as computers, telecommunications equipment, and consumer electronics to switch on/off signals, data, and low-power loads.

Power and signal relays come in different types and configurations depending on the specific application requirements. Some common types include electromechanical relays, reed relays, solid-state relays, and latching relays. Electromechanical relays use a mechanical switching mechanism, typically a set of contacts that move to make or break an electrical circuit. Reed relays use a set of magnetically activated contacts that are enclosed in a sealed glass tube. Solid-state relays use a semiconductor device to switch on/off the load. Latching relays use a magnetic field to hold the contacts in either the open or closed position, eliminating the need for continuous power to maintain the relay's state.

Power and signal relays play a critical role in the overall performance and reliability of electrical and electronic systems. The selection of the appropriate relay for a given application is crucial to ensure proper operation, safety, and longevity of the system. Factors to consider when selecting a relay include the load current and voltage, switching frequency, contact rating, switching speed, contact bounce, and environmental conditions such as temperature, humidity, and vibration. Proper maintenance and testing of relays are also important to ensure their continued performance and reliability over time.