TSFF5210-CS12 Equivalent & Substitute Parts

Part Overview

The TSFF5210-CS12 is an infrared (IR) emitter manufactured by Vishay Semiconductor Opto Division, designed for applications requiring 870nm wavelength emission at 100mA forward current. This component operates at 1.5V typical forward voltage with 120mW/sr radiant intensity and a 20° viewing angle in a radial through-hole package.

The TSFF5210-CS12 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where this emitter is specified.

Substiute Parts

TSFF5210-CS12

Vishay Semiconductor Opto DivisionIn Stock: 1915TSFF5210-CS12 Datasheet

Current PartRFQ

SFH 4350

ams-OSRAM USA INC.In Stock: 15337SFH 4350 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSFF5210-CS12 is determined by the following critical parameters:

• Wavelength compatibility: The substitute must operate within the near-infrared spectrum suitable for the application. The TSFF5210-CS12 operates at 870nm; substitutes at 860nm fall within acceptable tolerance for most IR sensing and transmission applications.
• Forward current rating: The substitute must support the specified 100mA maximum DC forward current.
• Forward voltage: The substitute must operate at 1.5V typical forward voltage to maintain circuit compatibility.
• Package and mounting: The substitute must use radial through-hole packaging to ensure mechanical and electrical compatibility with existing PCB designs.
• Radiant intensity: The substitute must meet or exceed the minimum radiant intensity specification to ensure adequate signal strength.

The SFH 4350 meets these substitution criteria with compatible electrical characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The SFH 4350 is the qualified substitute for the obsolete TSFF5210-CS12 based on the following factors:

• Electrical compatibility: Both components share identical maximum forward current (100mA) and typical forward voltage (1.5V), ensuring direct circuit compatibility without modification.
• Wavelength proximity: The 10nm difference between 870nm and 860nm falls within the near-infrared spectrum and is suitable for applications where the original wavelength was specified.
• Enhanced performance: The SFH 4350 provides superior radiant intensity (200mW/sr versus 120mW/sr) and a wider viewing angle (26° versus 20°), offering improved signal strength and coverage.
• Extended operating range: The SFH 4350 supports operation to 100°C, exceeding the TSFF5210-CS12 upper limit of 85°C.
• Active product status: The SFH 4350 is actively manufactured and widely available, ensuring long-term supply continuity.
• Regulatory compliance: Both components meet ROHS3, REACH, and MSL requirements, maintaining compliance with applicable standards.

Frequently Asked Questions (FAQ)

Q: Can the SFH 4350 be used as a direct replacement for the TSFF5210-CS12 without circuit modifications?

A: Yes. Both components operate at identical forward current (100mA) and forward voltage (1.5V) ratings. The radial through-hole package is identical, allowing direct PCB substitution. No circuit modifications are required.

Q: What is the significance of the 10nm wavelength difference between 870nm and 860nm?

A: Both wavelengths fall within the near-infrared spectrum used for IR sensing and transmission. The 10nm difference is typically acceptable for applications where the original wavelength was specified, as most IR detectors and sensors have spectral response ranges that accommodate this variation.

Q: Does the wider viewing angle of the SFH 4350 (26° versus 20°) affect compatibility?

A: The wider viewing angle of the SFH 4350 provides greater beam divergence, which is generally beneficial for applications requiring broader coverage. In applications where a narrower beam is critical, the wider angle may require optical design review, but electrical compatibility remains unchanged.

Q: Are there any temperature-related considerations when substituting the SFH 4350?

A: The SFH 4350 supports operation to 100°C, compared to 85°C for the TSFF5210-CS12. This extended range provides additional thermal margin and is compatible with applications operating within the original temperature specification.

Q: What packaging options are available for the SFH 4350?

A: The SFH 4350 is supplied in bulk packaging. The TSFF5210-CS12 was supplied in cut tape (CT) packaging. Both use identical radial through-hole package geometry, ensuring mechanical compatibility on PCBs.

Q: Are both components RoHS compliant?

A: Yes. Both the TSFF5210-CS12 and SFH 4350 are ROHS3 compliant with MSL rating of 1 (Unlimited), meeting current regulatory requirements for electronic components.