TSUS5402-AS12Z Infrared Emitter Equivalent & Substitute Parts

Part Overview

The TSUS5402-AS12Z is an infrared (IR) emitter manufactured by Vishay Semiconductor Opto Division, designed for 950nm wavelength applications. This component operates at 1.3V forward voltage with a maximum DC forward current of 150mA and delivers 15mW/sr radiant intensity at 100mA. The device features a 44° viewing angle in a radial 5mm diameter through-hole package.

The TSUS5402-AS12Z is classified as obsolete. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

TSUS5402-AS12Z

Vishay Semiconductor Opto DivisionIn Stock: 935TSUS5402-AS12Z Datasheet

Current PartRFQ

WP7113F3C

KingbrightIn Stock: 1719WP7113F3C Datasheet

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WP7113F3C

KingbrightIn Stock: 1719WP7113F3C Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSUS5402-AS12Z is determined by the following critical parameters:

Wavelength Compatibility: The primary wavelength specification is 950nm. Substitute parts operating at adjacent wavelengths (such as 940nm) may be considered based on application tolerance to wavelength variation.

Electrical Parameters: Forward voltage (Vf), maximum DC forward current (If), and radiant intensity (Ie) define the electrical operating envelope. Substitute parts must support the required current and voltage characteristics within the application circuit.

Mechanical Compatibility: Through-hole mounting type and radial package configuration are essential for PCB integration. The 5mm diameter form factor establishes the physical footprint.

Environmental Compliance: RoHS3 compliance and operating temperature range (-40°C to 85°C) establish regulatory and thermal operating boundaries.

Radiant Intensity and Viewing Angle: These optical parameters determine the light output characteristics and beam spread, which affect system performance in detection and signaling applications.

Parameter Comparison

Engineering Selection Recommendations

WP7113F3C (Kingbright) is identified as an active substitute for the obsolete TSUS5402-AS12Z. Both components share identical operating temperature ranges (-40°C to 85°C) and RoHS3 compliance status, establishing regulatory equivalence.

The WP7113F3C maintains through-hole radial package configuration, ensuring mechanical compatibility with existing PCB designs. Both components deliver 15mW/sr radiant intensity, meeting optical output requirements.

Key differences exist in wavelength (940nm versus 950nm), maximum forward current (50mA versus 150mA), forward voltage (1.2V versus 1.3V), and viewing angle (20° versus 44°). These differences require circuit-level evaluation to determine suitability for specific applications.

The WP7113F3C is currently in active production status with confirmed inventory availability, providing supply chain continuity for the obsolete TSUS5402-AS12Z.

Frequently Asked Questions (FAQ)

Q: Can the WP7113F3C directly replace the TSUS5402-AS12Z in all applications?

A: Direct replacement depends on application-specific requirements. Both components share identical operating temperature ranges and RoHS3 compliance. However, the WP7113F3C operates at lower maximum current (50mA versus 150mA), lower forward voltage (1.2V versus 1.3V), narrower viewing angle (20° versus 44°), and slightly different wavelength (940nm versus 950nm). Circuit design must accommodate these parameter differences.

Q: What is the significance of the wavelength difference between 950nm and 940nm?

A: The 10nm wavelength difference falls within the near-infrared spectrum. Compatibility depends on the photodetector or receiver component used in the system. Detectors designed for 950nm operation may exhibit reduced sensitivity at 940nm. Application-specific testing is required to confirm compatibility.

Q: Are both components mechanically compatible with existing PCB designs?

A: Both the TSUS5402-AS12Z and WP7113F3C feature through-hole radial package configurations. The 5mm diameter form factor is standard for both components, ensuring mechanical compatibility with existing through-hole PCB layouts.

Q: What does the difference in viewing angle (44° versus 20°) mean for system performance?

A: Viewing angle defines the beam spread of the infrared emitter. The TSUS5402-AS12Z provides a wider 44° viewing angle, distributing light over a broader area. The WP7113F3C provides a narrower 20° viewing angle, concentrating light in a tighter beam. System performance depends on the required coverage area and receiver positioning.

Q: Why is the maximum forward current different between these components?

A: The TSUS5402-AS12Z supports 150mA maximum forward current, while the WP7113F3C supports 50mA maximum. This reflects different internal design specifications. Circuit designs must limit current to the WP7113F3C's 50mA maximum to prevent component damage.

Q: Are both components RoHS3 compliant?

A: Yes. Both the TSUS5402-AS12Z and WP7113F3C are ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: What is the product status significance?

A: The TSUS5402-AS12Z is classified as obsolete, indicating discontinued manufacturing and limited availability. The WP7113F3C is in active production status, ensuring ongoing availability and supply chain reliability for new designs and production runs.