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Littelfuse 551003H04A Proximity Sensor

The 55100 Miniature Flange Mounting Proximity Sensor is a compact, magnetically operated device designed for position and limit sensing, RPM measurement, and flow metering applications. It features a small form factor of 25.5mm x 11.00mm and just 3.00mm high, with options for digital or programmable analog outputs. Suitable for harsh environments, it offers high-speed switching up to 10kHz, long operational life up to 20 billion cycles, and reverse/overvoltage protection. Its versatile design includes cable and connector options, making it ideal for automation and sensing tasks requiring precise proximity detection.

Authorized Distributors
Source:DigiKey
Part No:55100-3H-04-A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $8.16
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Part No:55100-3H-04-A
Stock:0
Inv Date:05-29-2026
Price: Unit price: $9.66
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Part No:55100-3H-04-A
Stock:264
Inv Date:05-28-2026
Price: Unit price: $8.89
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Part No:55100-3H-04-A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $6.37
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Littelfuse 551003H04A Proximity Sensor Specifications:

  • Dimensions: 25.5mm x 11.00mm x 3.00mm high
  • Switching Speed: Up to 10kHz
  • Supply Voltage Range: 15 to 28V dc
  • Output Types: Three-wire (voltage), two-wire (current)
  • Output Current (max): 20mA
  • Temperature Range: -40°C to +100°C
  • Vibration Resistance: 50g @ 50-2000Hz
  • Shock Resistance: 150g @ 11ms sine
  • Sensor Type: Hall effect, magnetically operated
  • Protection: Reverse and overvoltage protected
  • Construction: Small form factor suitable for flange mounting
  • Environment: Effective in harsh conditions, long operational life
  • Cable Options: Tinned or untinned leads, various lengths
  • Applications: Position sensing, RPM measurement, magnetic encoders

Buy the Littelfuse Series 55100 Proximity Sensor: 551003H04A

Purchase the Littelfuse 551003H04A proximity sensor online today for high-speed, long-lasting performance in industrial applications. Its compact design, versatile outputs, and robust construction ensure accurate position and limit sensing, RPM measurement, and flow monitoring. Suitable for harsh environments, it features reverse/overvoltage protection, and configurable cable options for easy installation. This sensor offers reliable magnetic sensing with programmable analog or digital outputs, making it an essential choice for automation, manufacturing, and equipment control, ensuring seamless operation and increased productivity.

Get Littelfuse 551003H04A today—built for precision, durability, and reliable proximity detection in industrial environments.

Frequently Asked Questions

Where can I buy Littelfuse 551003H04A?

You can click on the BUY or RFQ button to purchase 551003H04A from an authorized Littelfuse distributor.

How do I troubleshoot issues or seek technical support for part 551003H04A?

You can download the 551003H04A datasheet or visit the Littelfuse website for support.

Who is the manufacturer of 551003H04A?

Littelfuse

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