KT5G-2P1121 Equivalent & Substitute Parts

Part Overview

The KT5G-2P1121 is an optical contrast sensor manufactured by SICK, Inc., featuring a 10mm (0.394") sensing distance with PNP output configuration and selectable Dark-ON/Light-ON operation. This sensor is classified as Obsolete, necessitating identification of active equivalent models to maintain system functionality and ensure continued component availability for new installations and field replacements.

Substiute Parts

KT5G-2P1121

SICK, Inc.In Stock: 1131KT5G-2P1121 Datasheet

Current PartRFQ

1078121

SICK, Inc.In Stock: 9351078121 Datasheet

MFR RecommendedRFQ

KTX-WP91141242

SICK, Inc.In Stock: 1158KTX-WP91141242 Datasheet

MFR RecommendedRFQ

KTX-WP91142242

SICK, Inc.In Stock: 980KTX-WP91142242 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KT5G-2P1121 are identified based on the following critical parameters that define functional equivalence:

• Manufacturer: SICK, Inc. (same manufacturer ensures design compatibility and support continuity)
• Category: Optical Sensors (same sensor type and application class)
• Connection Method: M12 connector (ensures mechanical and electrical interface compatibility)
• Ingress Protection: IP67 (maintains environmental sealing requirements)
• Output Configuration: PNP (preserves signal logic and circuit integration)
• Voltage Supply Range: Overlapping or compatible supply voltage windows
• Adjustment Type: Adjustable (maintains field calibration capability)

The substitute parts identified (KTX-WP91141242 and KTX-WP91142242) represent active products from the KTX Prime series. While sensing distance increases from 10mm to 13mm, both substitutes maintain PNP output, M12 connectivity, IP67 protection, and adjustable potentiometer configuration. The 1078121 variant offers Push-Pull NPN/PNP output, providing additional flexibility for circuit integration.

Parameter Comparison

Engineering Selection Recommendations

For Direct PNP Replacement: KTX-WP91141242 and KTX-WP91142242 are functionally equivalent active products. Both maintain PNP output configuration, M12 connectivity, IP67 protection, and adjustable operation. These parts are ROHS3 compliant and support extended operating temperature ranges (-20°C to 60°C versus -10°C to 55°C). The increased sensing distance (13mm versus 10mm) requires mechanical repositioning in the application but does not affect electrical integration. Both parts are currently in active production status with confirmed inventory availability.

For Enhanced Output Flexibility: The 1078121 offers Push-Pull NPN/PNP output configuration, enabling integration into circuits requiring either output logic. This part provides faster response time (10µs versus 50µs) and extended temperature range. The M12 connector and IP67 rating maintain environmental compatibility. Selection of this variant depends on circuit requirements for dual-output capability.

Compliance Considerations: KTX-WP91141242 and KTX-WP91142242 carry ROHS3 compliance certification and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can KTX-WP91141242 or KTX-WP91142242 directly replace KT5G-2P1121 in existing installations?

A: Both KTX-WP91141242 and KTX-WP91142242 provide electrical and mechanical compatibility through identical M12 connector type, PNP output configuration, and IP67 ingress protection. The primary difference is sensing distance: 13mm versus 10mm. Physical repositioning of the sensor relative to the target surface is required to accommodate the increased sensing distance. Voltage supply ranges are compatible (10.8V ~ 28.8V overlaps with 10V ~ 30V).

Q: What is the difference between KTX-WP91141242 and KTX-WP91142242?

A: Both parts are functionally identical in electrical and mechanical specifications. Both are PNP optical sensors with 13mm sensing distance, M12 connectivity, IP67 protection, RGB LED light source, and adjustable potentiometer configuration. Inventory and packaging information confirm both are active products from the KTX Prime series with equivalent performance characteristics.

Q: Why does 1078121 have different output configuration?

A: The 1078121 features Push-Pull NPN/PNP output, providing dual-output capability compared to the PNP-only configuration of KT5G-2P1121. This allows integration into circuits requiring either NPN or PNP logic. Selection depends on specific circuit requirements. All other parameters (M12 connectivity, IP67 protection, 13mm sensing distance, adjustable operation) remain compatible with the original sensor class.

Q: Are there temperature range implications for substitution?

A: Substitute parts support extended operating temperature ranges (-20°C to 60°C) compared to the original KT5G-2P1121 (-10°C to 55°C). This provides improved performance margin in cold environments and maintains functionality across broader industrial temperature conditions. No derating or performance degradation occurs within the original operating range.

Q: What certifications apply to the substitute parts?

A: KTX-WP91141242 and KTX-WP91142242 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement in regulated industries and export markets.