Description
The JF-0520B is a compact open-frame push-pull DC solenoid designed for short-stroke linear actuation in space-constrained electromechanical assemblies. It provides a 10mm stroke with a rated force of approximately 4N (≈400g) at holding position, making it suitable for light-duty latching, locking, dispensing, and sorting mechanisms . The solenoid uses a spring-return plunger: when the coil is energized, the plunger moves to perform work; when power is removed, the internal spring returns it to the rest position . The open-frame construction features a metal housing and copper coil, with a threaded plunger tail and locking nut for stroke adjustment . Available in 6V, 12V, and 24V coil variants, the JF-0520B accommodates different DC power architectures while maintaining a compact body size of approximately 20×16×13mm (excluding plunger) . It is well-suited for individual makers building small automation projects and for business purchasers seeking a low-cost actuator for vending machines, electronic locks, office equipment, and light commercial automation.
Important Note on Specifications: Listings for the JF-0520B show significant inconsistencies in current ratings across different sellers. The 12V variant is variously described as drawing 300mA, 700mA, and 1A depending on the source . The 6V variant has been listed at 800mA and 6W . Buyers should measure the actual current draw of their specific unit before finalizing driver and power supply designs.
Features
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Push-Pull Operation with Spring Return: The plunger performs work when energized and automatically resets via internal spring when power is removed, simplifying mechanical design .
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Compact Open-Frame Design: Small body dimensions of approximately 20×16×13mm allow integration into tight enclosures and compact mechanisms .
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Multiple Voltage Options: Available in 6V, 12V, and 24V coil variants to match different DC power supply architectures.
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4N Holding Force with 10mm Stroke: Provides moderate actuation force suitable for light-duty latching, locking, and dispensing tasks .
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Threaded Plunger with Lock Nut: The plunger tail is threaded with a locking nut, allowing stroke length adjustment between approximately 10mm and 15mm .
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Mounting Holes: The frame includes mounting points for secure attachment to brackets and panels.
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Intermittent Duty Design: Intended for short-duration energization; one source recommends power-on time not exceeding one minute to prevent coil overheating .
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | JF-0520B |
| Type | Push-Pull, Open Frame, Spring Return |
| Stroke | 10mm (adjustable to ~15mm via lock nut) |
| Holding Force | 4N (≈400g) |
| Voltage Options | DC 6V / 12V / 24V |
| Current (12V variant) | 300mA to 1A reported across sources; verify with your unit |
| Body Dimensions | Approx. 20×16×13mm (excluding plunger) |
| Plunger Diameter | ~6mm |
| Duty Cycle | Intermittent; recommended energization within ~1 minute |
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