SS451A Honeywell Switch (Other) In Stock
Honeywell SS451A is a board-mount unipolar Hall-effect sensor in a flat TO-92 package operating from 3.0 V to 24 VDC. Provides reliable magnetic field detection with open-collector digital output for non-contact switching. Available worldwide from authorized distributors with global shipping.
- Manufacturer
- Honeywell
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- SS451A Datasheet PDF
- Category
- Switch
- Price
- From $1.3190(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SS451A?
- Wide supply voltage range of 3.0 V to 24 VDC enabling compatibility with both 3.3 V logic and 12 V/24 V industrial systems
- Flat TO-92 through-hole package for easy PCB mounting and stable mechanical positioning in sensor applications
- Unipolar switching response with open-collector output for direct interface with microcontrollers and PLCs without additional signal conditioning
What is SS451A used for?
The SS451A Hall-effect sensor is used in proximity detection, rotational speed sensing, and position feedback systems across automotive, industrial, and consumer electronics applications. Its wide 3.0 V to 24 VDC supply range makes it compatible with battery-powered portable devices as well as 24 V industrial control panels. The TO-92 package allows straightforward integration into motor encoder, end-of-travel switch, and brushless motor commutation circuits.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for SS451A?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What supply voltage range does the Honeywell SS451A Hall-effect sensor support?
The SS451A operates from 3.0 V to 24 VDC, covering both low-voltage 3.3 V microcontroller logic systems and 12 V or 24 V industrial PLC environments. This wide range eliminates the need for voltage regulators in many mixed-voltage designs, simplifying BOM and reducing component count.
How does the SS451A integrate into a brushless DC motor commutation circuit?
In a brushless DC motor commutation circuit, three SS451A sensors spaced 120 degrees apart around the rotor detect the 8 magnetic poles to generate Hall commutation signals. The open-collector output switches at the 10 mT typical operate point, providing clean digital transitions directly to the motor controller gate driver at supply voltages from 3.0 V to 24 VDC.
What is the SS451A output configuration and how does it connect to a microcontroller GPIO?
The SS451A has an open-collector NPN output requiring a pull-up resistor, typically 4.7 kΩ to 10 kΩ, to the logic supply. When the magnetic field exceeds the operate threshold, the output pulls low. This output interfaces directly with 3.3 V or 5 V GPIO pins on microcontrollers without level-shifting circuitry.
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Why Buy from FindMyChip
About Honeywell
Honeywell is a leading electronic component manufacturer. FindMyChip sources Honeywell ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.3190 | $1.32 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
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