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Configuration and Construction

1. Protective Construction
2. Construction and Characteristics
3. Operational Function

4. Terminal Configuration
5. Mounting Method

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1. Protective Construction

Dust Cover Type

To protect from dust, these types are covered, for example, with a plastic case. We recommend hand soldering, because these relays are not constructed to prevent flux and cleaning fluid from entering during automatic soldering.

Flux-Resistant Type

The relay is constructed so that flux will not enter inside the relay during automatic soldering. However, cleaning is not possible.

Sealed Type

Construction is designed to prevent seeping of flux when soldering and cleaning fluid when cleaning. Designed for minimal release of harmful gas at the contacts.

Sealed capsule type

This type is hermetically sealed with ceramic and metal plating. No harmful gas or humidity will ever reach the contacts. This type cannot be washed.

2. Construction and Characteristics

Type	Characteristics	Automatic Soldering	Automatic Cleaning	Dust Resistance	Harmful Gas Resistance
Dust Cover Type	Most basic construction where the case and base (or body) are fitted together.	Caution	No	Caution	No
Flux-Resistant Type	Terminals are sealed or molded simultaneously. The joint between the case and base is higher than the surface of the PC board.	Yes	No	Caution	No
Flux-Resistant Type	Terminals, case and base are filled with sealing resin. Construction is not hermetically sealed.	Yes	No	Caution	No
Sealed Type	Sealed construction including terminals and case. The base is sealed with sealing resin.	Yes	Yes	Yes	Yes
Sealed Capsule Type (EP and EV relays only)	Hermetically sealed construction by sealing the metal case and plate, and the terminal and ceramic part, with solder.	No	No	Yes	Yes

*	Since the plastic material is porous, please avoid atmospheric exposure to silicon..

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3. Operational Function

Single Side Stable Type

Relay which turns on when the coil is energized and turns off when deenergized.

1 Coil Latching Type

Relay with latching construction that can maintain the on or off state with a pulse input. With one coil, the relay is set or reset by applying signals of opposite polarities.

2 Coil Latching Type

Relay with latching construction composed of 2 coils: set coil and reset coil. The relay is set or reset by alternately applying pulse signals of the same polarity.

Operation Indication

Indicates the set and reset states (electrically or mechanically) for easy maintenance. Also available are an LED version (HC relay with LED).

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4. Terminal Configuration

Type	PC board through hole terminal	PC board self-clinching terminal	Plug-in terminal	Quick connect terminal	Screw terminal
Typical relay
Terminal configuration
Typical relay type	GQ(AGQ) Relays TX Relays DS Relays	TQ Relays	HJ Relays HN Relays	LE Relays LF Relays	HE Relays EP Relays

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5. Mounting Method

Type	Insertion mount	Socket mount	Terminal socket mount	TM type	TMP type
Mounting configuration
Typical relay options	TQ Relays DS Relays S Relays	NC Relays HC Relays	HJ Relays HC Relay	HC Relays HL Relays	LE Relays LF Relays

*	Sockets are available for certain PC board relays. (S relay, ST relay, etc.)

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Related Information

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