Panasonic AGN2004H 4.5V DPDT signal relay mounted on PCB, showing compact design and pin layout
What is AGN2004H?
The AGN2004H is a compact signal relay from Panasonic (GN Relay series).
It operates with a 4.5 V DC coil and delivers a contact rating of up to 1 A — ideal for small, efficient control circuits.
The relay uses a DPDT (Double Pole Double Throw, 2 Form C) contact arrangement, giving designers flexibility in switching and circuit control.
Key Specifications and Features
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Coil Voltage: 4.5 V DC
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Operating Power: 140 mW (low power)
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Contact Rating: 1 A at 30 V DC or 0.3 A at 125 V AC
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Mounting Type: Through-hole PCB terminal (standard PC-board pins)
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Compact Size: Body dimensions around 10.6 × 5.7 × 9.0 mm, weight ~1 g — suitable for space-constrained layouts.
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Durability: Fully sealed construction, good surge resistance and stable performance across –40 °C to +85 °C operating range.
Because of its small size, low coil voltage, and reliable contact mechanism, AGN2004H fits well in telecommunications gear, measurement instruments, audio-video devices, and other compact electronic systems.
Why AGN2004H Remains Relevant
In modern electronics design, where compact size and energy efficiency matter, AGN2004H stands out for its balance of low-voltage drive, small footprint, and flexible DPDT switching. It allows designers to implement control circuits with modest current demands without sacrificing reliability.
Furthermore, its sealed design and certified compliance (e.g., UL / c-UL, as listed by Panasonic) make it suitable for industrial or consumer-grade equipment that must meet safety and longevity standards.
Even with newer solid-state options available, mechanical relays like AGN2004H still have advantages in certain applications — for instance, simple on-off control, clear electrical isolation, and predictable failure mode.
Typical Applications
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Telecommunication equipment and switching devices
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Measurement and instrumentation tools
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Audio-visual devices and home electronics
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Industrial control circuits and low-power control panels
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Legacy equipment where compatibility with mechanical relays is required
What to Consider When Using AGN2004H
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Ensure your coil drive meets the 4.5 V DC requirement for reliable actuation.
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Confirm that the contact load stays within the specified 1 A / 30 V DC (or 0.3 A / 125 V AC) limits to avoid premature wear.
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For PCB layout, allow enough spacing for the through-hole pins and account for its 9 mm height when enclosures are tight.
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Leverage sealed construction when environmental robustness (humidity, dust) or surge protection is needed.