TSHA6202 Infrared Emitter 875nm Equivalent & Substitute Parts

Part Overview

The TSHA6202 is an infrared (IR) emitter operating at 875nm wavelength, designed for through-hole radial mounting applications. Manufactured by Vishay Semiconductor Opto Division, this component delivers 36mW/sr radiant intensity at 100mA forward current with a 24° viewing angle. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

TSHA6202

Vishay Semiconductor Opto DivisionIn Stock: 1027TSHA6202 Datasheet

Current PartRFQ

HSDL-4220

Lite-On Inc.In Stock: 2750HSDL-4220 Datasheet

MFR RecommendedRFQ

HSDL-4251

Lite-On Inc.In Stock: 8450HSDL-4251 Datasheet

MFR RecommendedRFQ

HSDL-4261

Lite-On Inc.In Stock: 1202HSDL-4261 Datasheet

MFR RecommendedRFQ

SIR-563ST3FN

Rohm SemiconductorIn Stock: 2941SIR-563ST3FN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSHA6202 is determined by the following criteria:

Primary Matching Parameters:

• Wavelength range: 870nm–875nm (near-infrared spectrum compatibility)
• Maximum forward current: 100mA (circuit current handling capability)
• Mounting type: Through hole (mechanical compatibility)
• Operating temperature range: Must encompass or overlap the application's required range

Secondary Considerations:

• Forward voltage (Vf): Acceptable variance within typical circuit design margins
• Radiant intensity (Ie): Must meet or exceed application-specific optical output requirements
• Viewing angle: Acceptable variance based on optical system design
• Package configuration: Radial or T 1 3/4 formats both support through-hole mounting

The substitute parts listed below meet the primary matching parameters and maintain functional equivalence within standard engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

HSDL-4261 (Lite-On) – Preferred Radial Package Substitute

The HSDL-4261 provides the closest mechanical and electrical match for radial-mounted applications. It maintains radial package geometry identical to the TSHA6202, operates across the full -40°C to 70°C temperature range, and delivers equivalent radiant intensity (36mW/sr @ 20mA). Forward voltage reduction from 2.8V to 1.4V improves circuit efficiency. This part is currently in active production status with ROHS3 compliance.

HSDL-4251 (Lite-On) – Alternative for Extended Temperature Range

The HSDL-4251 operates across the full -40°C to 85°C temperature range, matching the TSHA6202 specification. It delivers superior radiant intensity (56mW/sr @ 100mA) and maintains 100mA maximum forward current. The T 1 3/4 package requires mechanical redesign for through-hole mounting but is suitable for applications where package form factor can be accommodated. Active production status with ROHS3 compliance.

HSDL-4220 (Lite-On) – Cost-Optimized Substitute

The HSDL-4220 operates at 875nm wavelength with reduced forward voltage (1.5V) and is available in high inventory quantities. Operating temperature range (0°C to 70°C) is narrower than the original part. Radiant intensity specification (22mW/sr @ 50mA) is lower than the TSHA6202. Suitable for applications with relaxed temperature and optical output requirements.

SIR-563ST3FN (Rohm Semiconductor) – Alternative Wavelength Option

The SIR-563ST3FN operates at 940nm wavelength, outside the 870–875nm substitution range. This part is listed as a cross-reference but represents a different spectral band. Selection requires confirmation that 940nm wavelength is compatible with the optical system design. Active production status with ROHS3 compliance and extended temperature range (-25°C to 85°C).

Frequently Asked Questions (FAQ)

Q: Can HSDL-4261 directly replace TSHA6202 in existing designs?

A: Yes, for radial-mounted through-hole applications. The HSDL-4261 maintains identical package geometry and mechanical compatibility. Forward voltage reduction (2.8V to 1.4V) requires circuit verification to confirm adequate current limiting and optical output. Radiant intensity specifications are equivalent at the specified measurement currents.

Q: What is the impact of forward voltage differences between TSHA6202 and substitute parts?

A: The TSHA6202 operates at 2.8V typical forward voltage, while substitutes range from 1.34V to 1.5V. Lower forward voltage reduces power dissipation and heat generation. Circuit current-limiting resistor values may require adjustment to maintain desired forward current. Verify that the power supply voltage and circuit topology accommodate the lower voltage drop.

Q: Why does SIR-563ST3FN appear in the substitute list if it operates at 940nm?

A: The SIR-563ST3FN is listed as a cross-reference based on the provided input data. The 940nm wavelength places it outside the primary 870–875nm substitution band. This part is suitable only if the optical system design explicitly supports 940nm wavelength operation, such as in infrared remote control or sensing applications with 940nm-specific receivers.

Q: Are T 1 3/4 package parts compatible with radial-mounted circuit boards?

A: T 1 3/4 and radial packages have different mechanical form factors. T 1 3/4 parts feature cylindrical bodies with axial leads, while radial parts have leads extending from the base. Direct mechanical substitution is not possible without circuit board redesign. HSDL-4261 maintains radial geometry for direct substitution; HSDL-4251 and HSDL-4220 require board layout modification.

Q: What is the significance of operating temperature range differences?

A: The TSHA6202 operates from -40°C to 85°C. HSDL-4220 is limited to 0°C to 70°C, which excludes low-temperature and high-temperature extremes. HSDL-4251 and SIR-563ST3FN match or exceed the original temperature range. Verify application temperature requirements before selecting a substitute with a narrower operating range.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. All listed substitute parts (HSDL-4220, HSDL-4251, HSDL-4261, and SIR-563ST3FN) are ROHS3 compliant, matching the environmental compliance status of the TSHA6202. All parts are also REACH unaffected and classified under ECCN EAR99.