WT18-3P410 Equivalent & Substitute Parts Reference

Part Overview

The WT18-3P410 is a proximity, background suppression optical sensor manufactured by SICK, Inc., designed for applications requiring infrared detection with adjustable sensing distance from 0.394" to 27.559" (10mm to 700mm). This sensor features PNP output configuration with Dark-ON/Light-ON switching capability and operates across a supply voltage range of 10V to 30V.

The WT18-3P410 has reached obsolete product status. Locating equivalent or substitute components is necessary to maintain system functionality, ensure continued availability for replacement applications, and support legacy equipment maintenance. The sensor's specific electrical and mechanical characteristics must be matched to ensure proper system integration.

Substiute Parts

WT18-3P410

SICK, Inc.In Stock: 947WT18-3P410 Datasheet

Current PartRFQ

WTB16I-24161120A00

SICK, Inc.In Stock: 843WTB16I-24161120A00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WT18-3P410 is determined by compatibility across the following critical parameters:

Supply Voltage Compatibility: Both the main part and substitute must operate within overlapping voltage ranges. The WT18-3P410 operates at 10V ~ 30V. Substitute components must support this voltage window.

Connection Interface: The WT18-3P410 uses M12 connector interface. Substitute parts must maintain identical connector type to ensure mechanical and electrical compatibility with existing wiring harnesses and system integration points.

Output Configuration: The WT18-3P410 provides PNP output with Dark-ON/Light-ON switching. Substitute components must provide compatible output logic to maintain signal integrity in downstream control circuits.

Sensing Distance Range: The WT18-3P410 operates across 10mm to 700mm. Substitute components must cover this range or provide extended range capability to maintain or improve system performance.

Operating Temperature Range: The WT18-3P410 functions across -40°C to 60°C. Substitute components must support this temperature envelope for environmental compatibility.

Ingress Protection Rating: The WT18-3P410 carries IP67 rating. Substitute components must maintain equivalent or superior environmental sealing.

Light Source Wavelength: The WT18-3P410 uses infrared at 870nm. Substitute components operating at similar infrared wavelengths (850nm ~ 870nm) maintain optical compatibility with target materials and environmental conditions.

Parameter Comparison

Engineering Selection Recommendations

The WTB16I-24161120A00 serves as the manufacturer-recommended substitute for the obsolete WT18-3P410. Selection of this substitute is supported by the following engineering criteria:

Product Status and Availability: The WT18-3P410 is classified as obsolete, indicating discontinued manufacturing and limited inventory availability. The WTB16I-24161120A00 maintains active product status with confirmed inventory of 807 units in stock, ensuring reliable procurement for current and future applications.

Regulatory Compliance: The WTB16I-24161120A00 carries ROHS3 compliance certification and REACH unaffected status, meeting current environmental and regulatory requirements. The substitute is classified under ECCN EAR99 and HTSUS 8541.49.8000, supporting international trade and supply chain documentation.

Electrical Parameter Alignment: Both components operate within identical 10V ~ 30V supply voltage ranges and -40°C ~ 60°C temperature envelopes. The substitute supports PNP output configuration required by the main part while offering additional NPN capability for flexible system integration.

Mechanical and Interface Compatibility: Both components utilize M12 connector interface, ensuring direct compatibility with existing wiring harnesses and installation fixtures without mechanical modification.

Performance Enhancement: The WTB16I-24161120A00 provides extended sensing distance (10mm ~ 1.5m versus 10mm ~ 700mm) and faster response time (500µs versus 700µs), delivering improved performance characteristics while maintaining backward compatibility with applications designed for the WT18-3P410.

Frequently Asked Questions (FAQ)

Q: Can the WTB16I-24161120A00 directly replace the WT18-3P410 in existing installations?

A: The WTB16I-24161120A00 provides electrical and mechanical compatibility through identical supply voltage range (10V ~ 30V), M12 connector interface, and PNP output support. Both components operate across -40°C ~ 60°C. The substitute's extended sensing distance (10mm ~ 1.5m) covers the main part's range (10mm ~ 700mm). Direct replacement is supported from an electrical and mechanical standpoint. System integration should verify output signal logic configuration matches application requirements.

Q: What is the difference in sensing distance between these components?

A: The WT18-3P410 provides sensing distance of 10mm to 700mm. The WTB16I-24161120A00 extends this range to 10mm to 1.5m (1500mm). The substitute covers the entire operating range of the main part and provides additional sensing capability at extended distances. Applications requiring detection only within the 10mm to 700mm window will function identically with either component.

Q: Are the infrared wavelengths compatible?

A: The WT18-3P410 operates at 870nm infrared wavelength. The WTB16I-24161120A00 operates at 850nm. Both wavelengths fall within the infrared spectrum and are compatible with standard target materials and environmental conditions used in proximity sensing applications. The 20nm wavelength difference does not create optical incompatibility for typical industrial sensing applications.

Q: What output configuration options does the substitute provide?

A: The WT18-3P410 provides PNP output with Dark-ON/Light-ON switching. The WTB16I-24161120A00 provides Push-Pull output supporting both NPN and PNP modes. Applications requiring PNP output can configure the substitute accordingly. The substitute offers additional flexibility through NPN capability for systems requiring alternative output logic.

Q: How do response times compare?

A: The WT18-3P410 provides 700µs response time. The WTB16I-24161120A00 provides 500µs response time. The substitute delivers faster signal response, which may improve system performance in applications requiring rapid detection cycles. Applications designed for 700µs response will function with the faster 500µs response without compatibility issues.

Q: What packaging is provided with the substitute?

A: The WTB16I-24161120A00 is supplied in box packaging. The main part packaging specification was not provided in the original documentation.

Q: Are there compliance differences between the components?

A: The WT18-3P410 carries obsolete product status with ECCN classification as OBSOLETE. The WTB16I-24161120A00 is an active product with ROHS3 compliance, REACH unaffected status, ECCN EAR99 classification, and HTSUS 8541.49.8000 coding. The substitute meets current environmental and regulatory requirements for new installations and ongoing procurement.