HK4100F-DC 12V SHG Relay 6Pin

🔌 Subminiature 12 V DC PCB Relay with 6 Pins

The HK4100F-DC 12V SHG is a compact electromagnetic relay designed for direct PCB mounting. It features a 12 V DC coil, 6-pin through-hole package and a 1C / SPDT changeover contact, allowing it to work as either a normally open or normally closed switching element.

Thanks to its small size, standard PCB layout and sealed plastic housing, this relay is suitable for electronic control boards, automation circuits, signal switching and low-power load control applications.

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✅ Key Features

• ⚡ Coil voltage: 12 V DC
• 🔁 Contact form: 1C / SPDT / changeover
• 📌 Number of pins: 6
• 🔌 Contact rating: up to 3 A
• 🧩 Mounting type: PCB through-hole, DIP / THT
• 🛡️ Sealing type: plastic sealed type
• 🌱 RoHS compliant version
• 📐 Compact dimensions: approx. 15.5 × 10.5 × 11.8 mm
• ⚙️ Suitable for control electronics, signal switching and small load control

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📊 Technical Specifications

Parameter	Value
Model	HK4100F-DC 12V SHG
Relay type	Subminiature signal / PCB power relay
Coil voltage	12 V DC
Coil power	approx. 0.20 W
Coil resistance	approx. 720 Ω, ±10 %
Nominal coil current	approx. 16.7 mA
Contact form	1C / SPDT / changeover
Number of pins	6
Contact material	Silver alloy
Contact rating	3 A / 250 VAC or 3 A / 30 VDC
Maximum switching voltage	300 VAC / 60 VDC
Maximum switching current	3 A
Maximum switching power	750 VA / 90 W
Contact resistance	max. 100 mΩ initial value
Insulation resistance	≥100 MΩ at 500 VDC
Dielectric strength between coil and contacts	1000 VAC, 1 min
Dielectric strength between open contacts	500 VAC, 1 min
Operate time	max. 10 ms
Release time	max. 5 ms
Operating temperature range	-25 °C to +70 °C
Humidity range	35–85 % RH
Electrical life	up to 1 × 10⁵ operations
Mechanical life	up to 1 × 10⁷ operations
Dimensions	approx. 15.5 × 10.5 × 11.8 mm
Weight	approx. 3.5 g

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🔧 Applications

The HK4100F-DC 12V SHG relay can be used in many electronic and automation applications:

• microcontroller control boards;
• Arduino, ESP, STM32 and other DIY electronics projects;
• signal switching circuits;
• small motors, lamps, fans and other low-power loads;
• consumer electronics repair and prototyping;
• industrial automation control modules;
• 12 V control systems;
• alarm, security and monitoring equipment.

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⚠️ Usage Notes

• The relay coil is designed for 12 V DC operation.
• The contacts can switch both AC and DC loads, but the specified current, voltage and power limits must not be exceeded.
• When driving the relay from a microcontroller, a transistor driver and flyback diode are recommended.
• The relay is not intended for direct control of high-power loads exceeding the 3 A contact rating.
• PCB design should follow the manufacturer’s recommended pin layout and spacing.

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⭐ Advantages

The HK4100F-DC 12V SHG Relay 6Pin is a reliable, compact and versatile 12 V relay for electronic control applications. Its 1C changeover contact provides flexible switching options, while the small sealed package allows easy integration into space-limited PCB designs.