TSUS5200 Infrared Emitter 950nm Equivalent & Substitute Parts

Part Overview

The TSUS5200 is an infrared (IR) emitter operating at 950nm wavelength, manufactured by Vishay Semiconductor Opto Division. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design considerations. The TSUS5200 delivers 10mW/sr radiant intensity at 100mA forward current with a 30° viewing angle in a radial through-hole package. Substitute parts must maintain compatibility across wavelength tolerance, forward current ratings, radiant intensity output, and mechanical form factor to ensure functional equivalence in infrared transmission applications.

Substiute Parts

TSUS5200

Vishay Semiconductor Opto DivisionIn Stock: 5614TSUS5200 Datasheet

Current PartRFQ

BIR-BM5331

American Bright Optoelectronics CorporationIn Stock: 17593BIR-BM5331 Datasheet

MFR RecommendedRFQ

SIR-563ST3FN

Rohm SemiconductorIn Stock: 2941SIR-563ST3FN Datasheet

MFR RecommendedRFQ

SIR-568ST3F

Rohm SemiconductorIn Stock: 1442SIR-568ST3F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSUS5200 is determined by the following critical parameters:

Primary Substitution Criteria:

• Wavelength range: 940nm to 950nm (near-infrared spectrum compatibility)
• Forward current capability: minimum 100mA to support existing circuit designs
• Radiant intensity: minimum 9mW/sr to maintain signal strength in receiver applications
• Viewing angle: 26° to 35° (acceptable cone angle variation for directional IR transmission)
• Mounting type: Through Hole (mechanical compatibility)
• Operating temperature: minimum -25°C to 85°C (acceptable for most industrial applications)
• RoHS compliance: ROHS3 Compliant (regulatory requirement)

The three substitute parts listed (BIR-BM5331, SIR-563ST3FN, SIR-568ST3F) meet these criteria with specific trade-offs in wavelength, forward voltage, and package geometry. Each substitute maintains functional equivalence within defined parameter tolerances while addressing component availability.

Parameter Comparison

Engineering Selection Recommendations

BIR-BM5331 (American Bright Optoelectronics): This substitute maintains the radial package geometry of the TSUS5200 and operates across the full temperature range (-40°C to 85°C). The 940nm wavelength provides near-equivalent spectral performance. Forward current is limited to 100mA compared to the TSUS5200's 150mA rating; circuit designs must accommodate this reduced current capability. This part is actively manufactured and ROHS3 compliant, making it suitable for both legacy system support and new designs.

SIR-563ST3FN (Rohm Semiconductor): This substitute operates at 940nm with equivalent radiant intensity (9mW/sr @ 50mA). The package form factor changes from radial to T 1 3/4, requiring mechanical redesign of the mounting interface. Operating temperature range is -25°C to 85°C, which may limit use in extended low-temperature environments. This part is actively manufactured and ROHS3 compliant.

SIR-568ST3F (Rohm Semiconductor): This substitute operates at 850nm wavelength, representing a significant spectral shift from the TSUS5200's 950nm. The higher radiant intensity (18mW/sr @ 50mA) compensates for the wavelength difference in some applications. The T 1 3/4 package requires mechanical redesign. Product status is "Not For New Designs," limiting its use to legacy system maintenance only. Operating temperature range is -25°C to 85°C.

Frequently Asked Questions (FAQ)

Q: Can BIR-BM5331 directly replace TSUS5200 in existing circuits? A: BIR-BM5331 is mechanically compatible (radial package) and spectrally similar (940nm vs 950nm). However, the maximum forward current is reduced from 150mA to 100mA. Circuit designs operating the TSUS5200 at currents above 100mA require modification or current limiting adjustments.

Q: What is the impact of wavelength differences between 940nm, 950nm, and 850nm? A: Wavelength affects receiver sensitivity and spectral filtering. The 940nm and 950nm variants are within the near-infrared spectrum and compatible with most standard IR receivers. The 850nm variant (SIR-568ST3F) operates in a different spectral band and may require receiver compatibility verification.

Q: Why does SIR-568ST3F have higher radiant intensity despite being at 850nm? A: Radiant intensity is a separate design parameter from wavelength. Higher radiant intensity at 850nm compensates for potential receiver sensitivity differences at that wavelength. However, this does not make it a direct substitute without receiver compatibility confirmation.

Q: Are package changes from radial to T 1 3/4 significant? A: Yes. Radial packages have leads extending from the component body, while T 1 3/4 packages have a cylindrical form factor. PCB footprints, mounting hardware, and mechanical clearances differ. Substitution requires PCB redesign or adapter solutions.

Q: Can SIR-568ST3F be used for new designs? A: No. SIR-568ST3F is marked "Not For New Designs." It is available only for legacy system support and maintenance. New designs should use BIR-BM5331 or SIR-563ST3FN.

Q: What is the significance of the -40°C lower operating limit on TSUS5200 versus -25°C on substitutes? A: The TSUS5200 supports extended low-temperature operation to -40°C. Substitute parts with -25°C minimum ratings cannot be used in applications requiring operation below -25°C without thermal management modifications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. TSUS5200, BIR-BM5331, SIR-563ST3FN, and SIR-568ST3F are all ROHS3 compliant, meeting current environmental and regulatory requirements.