TSUS6402 Equivalent & Substitute Parts

Part Overview

The TSUS6402 is an infrared (IR) emitter operating at 950nm wavelength with a maximum forward current of 150mA and typical forward voltage of 1.3V. This radial through-hole component is designed for applications requiring near-infrared emission in the 950nm spectrum. The TSUS6402 is classified as obsolete, making identification of suitable substitute components necessary for ongoing design support and production continuity. The component is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substiute Parts

TSUS6402

Vishay Semiconductor Opto DivisionIn Stock: 784TSUS6402 Datasheet

Current PartRFQ

TSAL6400

Vishay Semiconductor Opto DivisionIn Stock: 89494TSAL6400 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSUS6402 is determined by the following critical parameters:

• Wavelength compatibility: The substitute must operate within the infrared spectrum. The TSAL6400 operates at 940nm, which is within the near-infrared range and acceptable for most IR detection applications that tolerate wavelength variation within the 940-950nm band.
• Mounting type and package: Both the main part and substitute must use through-hole radial mounting to ensure PCB compatibility without redesign.
• Operating temperature range: The substitute must support the same or wider operating temperature range (-40°C ~ 85°C).
• Compliance and availability: The substitute must maintain RoHS3 compliance and be in active production status to ensure long-term supply chain viability.
• Electrical characteristics: Forward voltage and maximum forward current must be compatible with existing circuit designs.

The TSAL6400 meets these substitution criteria as a manufacturer-recommended alternative from the same supplier.

Parameter Comparison

Engineering Selection Recommendations

The TSAL6400 is the manufacturer-recommended substitute for the obsolete TSUS6402. Both components are manufactured by Vishay Semiconductor Opto Division and maintain identical RoHS3 compliance and MSL ratings. The TSAL6400 is in active production status, ensuring supply chain continuity and long-term availability.

Key considerations for selection:

• The TSAL6400 operates at 940nm versus the TSUS6402's 950nm, a 10nm difference within the near-infrared spectrum suitable for IR detection applications.
• The TSAL6400 has a maximum forward current rating of 100mA compared to the TSUS6402's 150mA. Circuit designs must operate within the 100mA limit.
• The TSAL6400 exhibits higher radiant intensity (25mW/sr @ 100mA) compared to the TSUS6402 (15mW/sr @ 100mA), providing improved optical output.
• The TSAL6400 has a wider viewing angle (50° versus 44°), affecting the spatial distribution of infrared emission.
• Both components share identical operating temperature ranges and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the TSAL6400 directly replace the TSUS6402 without circuit modification?

A: The TSAL6400 is pin-compatible and uses the same through-hole radial mounting. However, the maximum forward current rating is reduced from 150mA to 100mA. Circuits designed to operate the TSUS6402 at currents exceeding 100mA require current limiting adjustments. The forward voltage difference (1.3V to 1.35V) is negligible for most applications.

Q: What is the significance of the 10nm wavelength difference between 950nm and 940nm?

A: Both wavelengths fall within the near-infrared spectrum and are suitable for standard IR detection applications. The 10nm difference is within the tolerance of most IR photodiode receivers. Applications with wavelength-specific requirements should verify compatibility with the receiving photodiode's spectral response curve.

Q: Are there any package dimension differences between the TSUS6402 and TSAL6400?

A: Both components use radial through-hole mounting. The TSAL6400 is specified as 5mm diameter (T 1 3/4) package. PCB footprint compatibility should be verified during design transition, though both are standard radial through-hole packages.

Q: Is the TSAL6400 suitable for new designs?

A: Yes. The TSAL6400 is in active production status with full RoHS3 compliance and unlimited moisture sensitivity level. It is the manufacturer-recommended substitute and is suitable for both legacy replacement and new design applications.

Q: How does the increased radiant intensity of the TSAL6400 affect system performance?

A: The TSAL6400 provides 67% higher radiant intensity (25mW/sr versus 15mW/sr @ 100mA). This results in stronger infrared output, which may improve detection range and signal-to-noise ratio in IR receiver circuits. System designs should account for this increased optical output to prevent receiver saturation.