TSFF6210 Equivalent & Substitute Parts

Part Overview

The TSFF6210 is an infrared (IR) emitter manufactured by Vishay Semiconductor Opto Division, designed for applications requiring 870nm wavelength emission at 100mA forward current. This component features a radial through-hole package with a 20° viewing angle and operates across the -40°C to 85°C temperature range.

The TSFF6210 is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

TSFF6210

Vishay Semiconductor Opto DivisionIn Stock: 26314TSFF6210 Datasheet

Current PartRFQ

VTE1291-2H

Excelitas TechnologiesIn Stock: 4838VTE1291-2H Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSFF6210 is determined by the following critical parameters:

• Wavelength tolerance: 870nm ±10nm (880nm acceptable)
• Forward current rating: 100mA minimum
• Forward voltage: 1.5V nominal
• Mounting type: Through hole radial package required
• Viewing angle: 20° to 24° range acceptable
• Operating temperature: Minimum -40°C to 85°C coverage required
• Compliance: ROHS3 compliant, REACH unaffected

The VTE1291-2H from Excelitas Technologies meets these substitution criteria through equivalent electrical ratings, compatible package configuration, and maintained compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The VTE1291-2H is a qualified substitute for the TSFF6210 based on the following factors:

Electrical compatibility: Both components operate at identical forward current (100mA) and forward voltage (1.5V) ratings, ensuring circuit-level compatibility without modification to current-limiting resistor networks or power supply specifications.

Wavelength alignment: The 880nm wavelength of the VTE1291-2H represents a 10nm shift from the TSFF6210's 870nm specification. This wavelength difference is within acceptable tolerance for most infrared sensing and transmission applications, though system-level validation is required for wavelength-critical designs.

Radiant intensity consideration: The VTE1291-2H delivers 65mW/sr compared to the TSFF6210's 90mW/sr at 100mA. Applications requiring the full 90mW/sr output specification may require circuit redesign or alternative component selection.

Viewing angle expansion: The VTE1291-2H's 24° viewing angle exceeds the TSFF6210's 20° specification, providing broader emission coverage. This characteristic is generally compatible with existing optical designs.

Product status and availability: The VTE1291-2H maintains active product status with documented inventory availability, eliminating obsolescence risk associated with the TSFF6210.

Regulatory compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production environments.

Frequently Asked Questions (FAQ)

Q: Can the VTE1291-2H be used as a direct pin-for-pin replacement for the TSFF6210?

A: Yes. Both components feature identical radial through-hole package configurations and equivalent electrical ratings (100mA, 1.5V). No PCB layout modifications are required for mechanical or electrical substitution.

Q: What is the impact of the 10nm wavelength difference between 870nm and 880nm?

A: The 10nm shift falls within typical wavelength tolerance bands for infrared applications. However, designs with wavelength-dependent optical filters, photodiode response curves, or sensor calibration may require validation testing to confirm performance equivalence.

Q: Why does the VTE1291-2H have lower radiant intensity (65mW/sr vs. 90mW/sr)?

A: Radiant intensity differences reflect manufacturing variations and design optimization between manufacturers. Applications dependent on the full 90mW/sr specification should evaluate whether the reduced output meets system sensitivity requirements or if alternative components are necessary.

Q: Is the extended operating temperature range (-40°C to 100°C) of the VTE1291-2H a concern?

A: No. The extended upper temperature limit of the VTE1291-2H provides additional thermal margin and is fully compatible with designs specified for -40°C to 85°C operation.

Q: Are there any compliance or certification differences between these components?

A: Both components maintain identical ROHS3 compliance and REACH unaffected status. No compliance-related barriers to substitution exist.

Q: What inventory status should be considered when selecting between these parts?

A: The TSFF6210 is obsolete with limited remaining stock. The VTE1291-2H is active with documented inventory availability, making it the preferred choice for new production and long-term design continuity.