TSUS4300 Equivalent & Substitute Parts

Part Overview

The TSUS4300 is an infrared (IR) emitter operating at 950nm wavelength, designed for through-hole radial mounting applications. Manufactured by Vishay Semiconductor Opto Division, this component delivers 7mW/sr radiant intensity at 100mA forward current with a 32° viewing angle. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Wavelength	950nm
Forward Current (If Max)	100mA
Forward Voltage (Vf Typ)	1.3V
Radiant Intensity (Ie Min)	7mW/sr @ 100mA
Viewing Angle	32°
Operating Temperature Range	-40°C ~ 85°C
Mounting Type	Through Hole
Package Type	Radial
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the TSUS4300 is determined by the following critical parameters:

Wavelength compatibility: Near-infrared spectrum (940nm–950nm range) maintains functional equivalence for most receiver circuits
Forward current rating: Minimum 100mA capability required for direct replacement
Radiant intensity: Minimum 7mW/sr ensures adequate signal strength for detection circuits
Mounting configuration: Through-hole radial package required for mechanical compatibility
Operating temperature range: Must support -40°C minimum and preferably 85°C maximum
Regulatory compliance: ROHS3 compliance mandatory for equivalent status

The INL-5AHIR30 meets these substitution criteria with minor parameter variations within acceptable engineering tolerances for IR emitter applications.

Parameter Comparison

Parameter	TSUS4300 (Vishay)	INL-5AHIR30 (Inolux)	Compatibility Notes
Wavelength	950nm	940nm	10nm difference within near-IR spectrum; functionally compatible for standard receiver circuits
Forward Current (If Max)	100mA	100mA	Identical rating; direct electrical compatibility
Forward Voltage (Vf Typ)	1.3V	1.2V	0.1V difference; negligible impact on circuit operation
Radiant Intensity (Ie Min)	7mW/sr @ 100mA	7.8mW/sr @ 20mA	INL-5AHIR30 exceeds minimum intensity specification; superior performance
Viewing Angle	32°	30°	2° difference; minimal impact on optical field coverage
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 80°C	INL-5AHIR30 rated to 80°C maximum; acceptable for most applications below 85°C
Mounting Type	Through Hole	Through Hole	Identical; direct mechanical compatibility
Package Type	Radial	Radial	Identical; PCB footprint compatible
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Both meet regulatory requirements

Engineering Selection Recommendations

The INL-5AHIR30 qualifies as a direct substitute for the obsolete TSUS4300 based on the following engineering criteria:

Electrical Compatibility: Both components operate at identical maximum forward current (100mA) with negligible voltage differential (0.1V). The wavelength variation (10nm) remains within acceptable tolerance for standard IR receiver circuits designed for the near-infrared spectrum.

Optical Performance: The INL-5AHIR30 delivers superior radiant intensity (7.8mW/sr) compared to the TSUS4300 minimum specification (7mW/sr), ensuring adequate signal margin for detection circuits.

Mechanical Compatibility: Identical through-hole radial package configuration enables direct PCB footprint compatibility without layout modifications.

Regulatory Compliance: Both components maintain ROHS3 compliance, satisfying environmental and hazardous substance restrictions.

Product Status Consideration: The INL-5AHIR30 maintains active product status with current inventory availability (2949 pcs), providing supply chain continuity for the obsolete TSUS4300.

Temperature Limitation: Applications requiring operation above 80°C should evaluate thermal management or seek alternative components rated to 85°C.

Frequently Asked Questions (FAQ)

Q: Can the INL-5AHIR30 replace the TSUS4300 in existing designs without circuit modification?

A: Yes. The INL-5AHIR30 maintains electrical and mechanical compatibility with identical forward current ratings, through-hole radial packaging, and ROHS3 compliance. The 10nm wavelength difference and 0.1V forward voltage variation fall within standard receiver circuit tolerances for near-infrared applications.

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

A: Both wavelengths operate within the near-infrared spectrum and are compatible with standard silicon photodiode receivers. The 10nm difference does not materially affect receiver sensitivity for typical IR detection circuits. Verify receiver spectral response if application requires specific wavelength matching.

Q: Does the INL-5AHIR30 meet the same regulatory requirements as the TSUS4300?

A: Yes. Both components are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS classifications, satisfying equivalent regulatory and export control requirements.

Q: Are there any thermal operating range limitations when substituting the INL-5AHIR30?

A: The INL-5AHIR30 is rated to -40°C ~ 80°C, compared to the TSUS4300 range of -40°C ~ 85°C. Applications requiring sustained operation above 80°C should implement thermal management measures or evaluate alternative components with higher temperature ratings.

Q: Is the radial package configuration identical between both components?

A: Yes. Both components use through-hole radial packaging, ensuring direct mechanical and PCB footprint compatibility without layout modifications or mechanical redesign.

Q: What inventory status should be considered when selecting a substitute?

A: The INL-5AHIR30 maintains active product status with 2949 pcs in current stock, providing reliable supply chain availability compared to the obsolete TSUS4300 status.

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