Finder 30.22.9.024.0020 – 30 Series Subminiature DIL relays

Why Choose the Finder 30.22.9.024.0020 PCB Signal Relay?

The Finder 30.22.9.024.0020 is a compact 2 A, 24 V DC PCB signal relay designed for dependable switching of electrical signals and compatible low-power loads in electronic equipment. Part of the Finder Series 30 subminiature relay range, this device features two changeover contacts (2 CO / DPDT), gold-plated silver nickel contacts and a sensitive, low-consumption DC coil.

Engineered for direct installation onto printed circuit boards, the Finder 30.22.9.024.0020 combines a compact dual-in-line (DIL) design with reliable electromechanical switching. Its 200 mW nominal coil consumption makes it particularly suitable for electronic control circuits where power efficiency is important, while its 2 A contact rating provides flexibility for signal switching and compatible electrical loads.

The relay uses gold-plated silver nickel (AgNi + Au) contacts to support dependable operation in low-level signal applications. Its RT III wash-tight enclosure also makes it suitable for specified printed circuit board cleaning processes during electronic assembly and manufacturing.

With a 24 V DC operating coil, 125 V AC rated contact voltage and 250 V AC maximum switching voltage, the Finder 30.22.9.024.0020 provides a practical solution for electronic control systems, instrumentation, industrial automation interfaces and OEM electronic equipment.

Key Advantages

• Compact subminiature PCB relay for space-constrained electronic designs.
• 24 V DC operating coil for compatible low-voltage control circuits.
• 2 A contact rating for suitable signal and electrical load switching.
• Two changeover contacts (2 CO / DPDT) provide flexible dual-circuit switching.
• Gold-plated AgNi contacts support reliable low-level signal switching.
• 200 mW nominal coil consumption helps reduce control circuit power requirements.
• 2.88 kΩ nominal coil resistance supports efficient DC coil operation.
• 10 mW minimum switching load for suitable low-level electrical signals.
• RT III wash-tight construction supports specified PCB cleaning processes.
• Through-hole PCB mounting enables straightforward integration into electronic assemblies.
• Dual-in-line package provides a compact, practical mounting arrangement.
• −40 to +85 °C operating temperature range for demanding electronic environments.
• Cadmium-free contacts and RoHS-compliant construction.

Key Features

• Finder Series 30 subminiature electromechanical relay.
• 24 V DC nominal coil voltage.
• 2 A rated contact current.
• 2 CO / DPDT contact configuration.
• 125 V AC rated contact voltage.
• 250 V AC maximum switching voltage.
• Gold-plated silver nickel (AgNi + Au) contacts.
• 200 mW sensitive DC coil.
• 2.88 kΩ nominal coil resistance.
• 10 mW minimum switching load.
• 1.5 kV impulse withstand voltage between coil and contacts.
• RT III wash-tight enclosure classification.
• Through-hole PCB mounting with PC pin terminals.
• Subminiature dual-in-line construction.
• −40 to +85 °C ambient operating temperature.
• Cadmium-free contact material.
• RoHS-compliant construction.
• cURus component recognition.

Electrical ratings must be considered together with the connected load type, switching frequency and PCB design. The maximum switching voltage is not the same as the rated contact voltage. Consult the manufacturer's current datasheet and terminal diagram before finalising an electronic circuit.

Dual Changeover Contacts for Flexible Signal Switching

The Finder 30.22.9.024.0020 features two changeover contacts, also known as a double-pole double-throw (DPDT) configuration. Each contact set provides a common terminal, a normally closed terminal and a normally open terminal.

When the relay coil is energised, the changeover contacts transfer between their normal and operated positions. This allows two separate circuits to be switched simultaneously using one control signal.

The arrangement is useful in electronic systems requiring signal selection, circuit changeover, status indication or the switching of two independent low-power loads.

Because the relay provides two separate changeover contact sets, designers can use it for applications such as:

• Switching between alternative signal paths.
• Controlling two compatible circuits from a common control signal.
• Providing normally open and normally closed switching functions.
• Changing control states within electronic automation equipment.
• Routing signals in monitoring and instrumentation systems.

Sensitive 24 V DC Coil with Low Power Consumption

A key feature of the Finder 30.22.9.024.0020 is its 200 mW sensitive DC coil. This provides electromechanical switching while keeping the coil's power requirements relatively low.

The relay operates from a 24 V DC nominal supply and has a nominal coil resistance of 2.88 kΩ. These characteristics make it suitable for compatible electronic control circuits, including transistor-driven relay interfaces and embedded automation systems.

Designers should provide a suitable coil driver and consider transient suppression when the coil is switched off. Any suppression components should be selected with reference to the required release behaviour and the manufacturer's recommendations.

The relay's compact size and low coil consumption make it particularly useful where multiple relays must be installed on the same PCB and overall circuit power consumption is an important design consideration.

Gold-Plated Silver Nickel Contacts for Low-Level Signals

The Finder 30.22.9.024.0020 uses silver nickel contacts with gold plating (AgNi + Au). This combination is designed to provide reliable electrical contact performance in suitable low-level switching applications.

The gold-plated surface is particularly beneficial for low-current signals where maintaining dependable electrical contact is important. This makes the relay suitable for electronic monitoring equipment, control interfaces, instrumentation and signal-routing applications.

With a specified 10 mW minimum switching load, the relay can be considered for appropriately designed low-level signal circuits. However, actual suitability depends on the voltage and current involved, environmental conditions and the contact resistance requirements of the application.

For higher-current loads, the contact rating and switching characteristics must be checked carefully. In particular, capacitive loads and inductive circuits can produce switching conditions significantly different from those of a resistive load.

RT III Wash-Tight Construction for PCB Manufacturing

The RT III wash-tight enclosure classification makes the Finder 30.22.9.024.0020 suitable for specified electronic assembly and PCB cleaning processes.

During PCB production, electronic assemblies may undergo cleaning to remove flux residues and other manufacturing contaminants. The relay's wash-tight construction provides protection against the conditions covered by its enclosure classification when the manufacturer's recommended processing procedures are followed.

The relay is designed for through-hole PCB mounting, with PC pin terminals that can be soldered into a compatible printed circuit board. Its subminiature DIL format makes it suitable for compact layouts where board space is limited.

RT III classification does not mean that the relay is waterproof or suitable for unrestricted exposure to liquids. The finished equipment must provide the environmental protection required for its intended installation.

Typical Applications

• Electronic control circuit boards.
• Industrial automation interface modules.
• Low-level electrical signal switching.
• Electronic instrumentation and monitoring systems.
• Audio and Hi-Fi equipment.
• Printers and office electronic equipment.
• Building automation electronics.
• Alarm and monitoring systems.
• Door and gate control electronics.
• Medical and dental electronic equipment, subject to applicable design requirements.
• Compact embedded control systems.
• Electronic test and measurement equipment.
• OEM printed circuit board assemblies.
• Maintenance and replacement of compatible PCB relays.