Product Description

The IFM IF5539 is a cylindrical, unshielded inductive proximity sensor designed for non-contact detection of metallic objects in industrial automation applications. With a sensing range of 4 mm, it features a PNP normally open (NO) output and operates within a wide voltage range of 10 to 36 V DC. The sensor is housed in a robust M12 threaded brass body, coated with white bronze for enhanced durability. It offers IP67 ingress protection, making it suitable for use in harsh environments. Additionally, the IF5539 is equipped with gold-plated contacts and includes reverse polarity, short-circuit, and overload protection, ensuring reliable performance and longevity.

Technical Specifications

• Sensing Range: 4 mm (±10%)
• Output Type: PNP, normally open (NO)
• Operating Voltage: 10–36 V DC
• Current Consumption: < 10 mA
• Switching Frequency: Up to 1.5 kHz
• Maximum Voltage Drop (Switching Output): 2.5 V
• Permanent Current Rating (Switching Output): 100 mA
• Short-Circuit Protection: Yes (pulsed)
• Overload Protection: Yes
• Reverse Polarity Protection: Yes
• Hysteresis: 1–20% of sensing range
• Switch Point Drift: ±10% of sensing range
• Operating Temperature: -25°C to +80°C
• Ingress Protection: IP67
• Housing Material: Brass (white bronze-coated); Sensing Face: Polycarbonate (orange)
• Mounting Type: Non-flush mountable
• Dimensions: M12 x 1 thread; Length: 45 mm
• Weight: Approximately 24.3 g
• Electrical Connection: M12 connector (4-pin, A-coded); Gold-plated contacts
• LED Indicators: 4 x Yellow LEDs for switching status
• Certifications: UL Approval (Ta 0–40°C, Enclosure Type 1, Limited Voltage/Current)
• Mean Time to Failure (MTTF): Approximately 1,134 years​