TSHA6201 Infrared Emitter 875nm Equivalent & Substitute Parts

Part Overview

The TSHA6201 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 30mW/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 design support and production continuity.

Substiute Parts

TSHA6201

Vishay Semiconductor Opto DivisionIn Stock: 755TSHA6201 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 TSHA6201 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 (PCB assembly compatibility)
• RoHS3 compliance (regulatory requirement)

Secondary Compatibility Factors:

• Forward voltage tolerance (1.4V–2.8V acceptable for most driver circuits)
• Viewing angle (24°–30° acceptable for directional applications)
• Operating temperature overlap (minimum -40°C to 85°C required)
• Radiant intensity variation (application-dependent; higher intensity acceptable)

The substitute parts listed below meet the primary matching parameters. Package type variations (Radial vs. T 1 3/4) represent mechanical differences that may require PCB layout adjustment but do not affect electrical functionality.

Parameter Comparison

Engineering Selection Recommendations

Preferred Substitute (Radial Package): HSDL-4261 is the primary equivalent for applications requiring radial mounting geometry. It maintains 870nm wavelength operation within the near-infrared spectrum, supports 100mA forward current, and operates across the full -40°C to 70°C temperature range. Active product status ensures long-term availability.

Alternative Substitutes (T 1 3/4 Package): HSDL-4251 and HSDL-4220 are functionally equivalent but require PCB layout modification due to T 1 3/4 package geometry. HSDL-4251 offers superior radiant intensity (56mW/sr @ 100mA) and full temperature range (-40°C ~ 85°C) matching the original specification. HSDL-4220 operates at the original 875nm wavelength but with reduced temperature range (0°C ~ 70°C).

Extended Wavelength Option: SIR-563ST3FN operates at 940nm, outside the primary 870–875nm band. Selection of this part requires application verification that 940nm wavelength compatibility is acceptable. Lower radiant intensity (9mW/sr @ 50mA) may necessitate circuit design adjustment.

All substitute parts carry ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), meeting regulatory and manufacturing requirements.

Frequently Asked Questions (FAQ)

Q: Can HSDL-4261 directly replace TSHA6201 without PCB modification? A: Yes. Both parts use radial through-hole mounting and share identical package geometry. No PCB layout changes are required. Electrical parameters (870nm wavelength, 100mA maximum current, -40°C to 70°C operation) are compatible with TSHA6201 applications.

Q: What is the impact of switching from radial to T 1 3/4 package? A: Package geometry differs significantly. Radial packages have leads extending from the component base; T 1 3/4 packages use axial lead configuration. PCB footprint, hole spacing, and mounting orientation must be redesigned. Electrical performance is unaffected.

Q: Why is SIR-563ST3FN listed as a substitute if it operates at 940nm instead of 875nm? A: SIR-563ST3FN meets the primary electrical criteria (100mA maximum current, through-hole mounting, active product status, ROHS3 compliance). However, 940nm wavelength represents a 65nm shift from the original specification. This part is suitable only for applications where wavelength tolerance permits near-infrared operation across the 875–940nm range. Verify receiver or detector compatibility before selection.

Q: What is the significance of radiant intensity variation among substitutes? A: Radiant intensity (measured in mW/sr) determines optical output power in a specific direction. HSDL-4251 delivers 56mW/sr at 100mA, exceeding TSHA6201's 30mW/sr specification. HSDL-4220 delivers 22mW/sr at 50mA, below the original. Selection depends on application requirements: higher intensity suits long-distance transmission; lower intensity suits proximity sensing. Verify circuit design accommodates the selected intensity level.

Q: Are all substitutes RoHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 Compliant certification, meeting regulatory requirements for hazardous substance restriction.

Q: What temperature range should I select for extended operating environments? A: HSDL-4251 and TSHA6201 both support -40°C to 85°C operation, suitable for industrial and automotive applications. HSDL-4261 operates to 70°C maximum; HSDL-4220 operates 0°C to 70°C. For applications below 0°C or above 70°C, HSDL-4251 is the appropriate choice.