Hongfa HF105F-1/05D6-1ZST 5V 40A Miniature High Power Latching Relay

Hongfa HF105F-1/05D6-1ZST 5V 40A Miniature High Power Relay is a compact, high-current PCB mount electromagnetic relay designed for reliable switching of heavy AC and DC loads. Equipped with a 5V DC coil and a 1 Form C (SPDT) contact configuration, this relay supports switching currents up to 40A, making it suitable for industrial control systems, UPS units, battery chargers, inverters, HVAC equipment, power supplies, and home appliances. Its AgSnO₂ contacts, high dielectric strength, and long electrical life ensure dependable performance in demanding application.

Hongfa HF105F-1/05D-1ZST 12V Miniature High Power Latching Relay Datasheet

Features:

1. 40A High Current Switching Capability
2. 5V DC Coil Voltage
3. 1 Form C (SPDT) Contact Configuration
4. Approx. 900mW Low Coil Power Consumption
5. 4kV Dielectric Strength Between Coil and Contacts
6. Heavy Load Switching up to 7200VA
7. Silver Tin Oxide (AgSnO₂) Contacts
8. PCB Through-Hole Mounting
9. Plastic Sealed Construction
10. Long Mechanical and Electrical Life
11. RoHS Compliant

Specifications:

Parameter	Value
Product Type	Miniature High Power Relay
Brand	Hongfa
Model	HF105F-1/05D6-1ZST
Contact Arrangement	1 Form C (SPDT)
Contact Type	1 NO + 1 NC
Coil Voltage	5V DC
Coil Power	Approx. 900mW
Coil Resistance	27Ω ±10%
Nominal Coil Current	Approx. 185mA
Pick-Up Voltage (Max.)	3.75V DC
Drop-Out Voltage (Min.)	0.5V DC
Maximum Coil Voltage	6.5V DC
Contact Material	AgSnO₂
Initial Contact Resistance	50mΩ Max. (at 1A, 24VDC)
Maximum Switching Current	40A
Maximum Switching Voltage	277VAC / 28VDC
Maximum Switching Capacity	5540VA / 600W (1 Form C NO Contact)
Rated Load (NO Contact)	20A @ 240VAC, 20A @ 28VDC
Rated Load (NC Contact)	10A @ 240VAC, 10A @ 28VDC
Insulation Resistance	1000MΩ Min. @ 500VDC
Dielectric Strength (Coil to Contacts)	2500VAC / 4000VAC for 1 Minute (depending on terminal version)
Dielectric Strength (Open Contacts)	1500VAC for 1 Minute
Operate Time	15ms Max.
Release Time	10ms Max.
Mechanical Life	10 Million Operations
Electrical Life	100,000 Operations (Resistive Load)
Shock Resistance	Functional: 98m/s², Destructive: 980m/s²
Vibration Resistance	10Hz–55Hz, 1.5mm Double Amplitude
Ambient Temperature	-55°C to +85°C (DC Coil)
Humidity	5% to 85% RH
Mounting Type	PCB Through Hole
Terminal Type	PCB Pins
Construction	Plastic Sealed
Unit Weight	Approx. 36g
Safety Approvals	UL, cUL, VDE, CQC
Compliance	RoHS Compliant
Typical Applications	UPS Systems, Battery Chargers, Industrial Automation, Power Supplies, HVAC Equipment, Home Appliances, Inverters, Motor Control

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Package Includes:

1 x Hongfa HF105F-1/05D6-1ZST 5V 40A Miniature High Power Relay