TSHA5202 Infrared Emitter 875nm Equivalent & Substitute Parts

Part Overview

The TSHA5202 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 design support and production continuity.

Substiute Parts

TSHA5202

Vishay Semiconductor Opto DivisionIn Stock: 4367TSHA5202 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 TSHA5202 is determined by the following criteria:

Primary Compatibility Parameters:

• Wavelength range: 870nm–875nm (near-infrared spectrum alignment)
• Maximum forward current: 100mA (electrical rating compatibility)
• Forward voltage: 1.4V–1.5V (power supply compatibility)
• Mounting type: Through Hole (mechanical fit requirement)
• RoHS3 compliance (regulatory requirement)

Secondary Consideration Parameters:

• Radiant intensity specifications (application-dependent performance)
• Viewing angle (optical beam characteristics)
• Operating temperature range (environmental suitability)
• Package form factor (Radial or T 1 3/4 for through-hole applications)

The substitute parts listed below meet the primary compatibility parameters. Radial-package substitutes (HSDL-4261) maintain identical mechanical mounting characteristics. T 1 3/4 package alternatives (HSDL-4220, HSDL-4251, SIR-563ST3FN) require mechanical re-evaluation but provide electrical equivalence within the specified current and voltage ranges.

Parameter Comparison

Engineering Selection Recommendations

Radial Package Substitution (Mechanical Compatibility Maintained):

HSDL-4261 is the primary substitute for applications requiring radial package form factor. It maintains through-hole radial mounting compatibility with the TSHA5202. Wavelength deviation (870nm vs. 875nm) is within the near-infrared spectrum and acceptable for most IR applications. Operating temperature range is -40°C to 70°C, which covers the lower end of the TSHA5202 specification (-40°C to 85°C). This part is RoHS3 compliant and currently in active production status.

T 1 3/4 Package Substitution (Mechanical Re-evaluation Required):

HSDL-4251 provides the closest electrical match with identical maximum forward current (100mA), similar forward voltage (1.4V vs. 1.5V), and extended operating temperature range (-40°C to 85°C). Radiant intensity is higher (56mW/sr @ 100mA), which may require circuit-level current limiting adjustments. This part requires mechanical re-evaluation due to T 1 3/4 package form factor.

HSDL-4220 matches the TSHA5202 wavelength (875nm) and forward voltage (1.5V) exactly. Operating temperature range is restricted to 0°C to 70°C. Radiant intensity is lower (22mW/sr @ 50mA), which may impact application performance in high-distance IR transmission scenarios.

Extended Wavelength Substitution (Application-Dependent):

SIR-563ST3FN operates at 940nm wavelength, representing a significant spectral shift from the TSHA5202 (875nm). This part is suitable only for applications where 940nm wavelength is acceptable or preferred (such as certain IR receiver compatibility requirements). Lower radiant intensity (9mW/sr @ 50mA) requires application-level verification.

All substitute parts maintain RoHS3 compliance and are in active production status, ensuring long-term supply availability.

Frequently Asked Questions (FAQ)

Q: Can HSDL-4261 be used as a direct drop-in replacement for TSHA5202?

A: HSDL-4261 maintains radial package compatibility and meets primary electrical parameters (100mA maximum current, 1.4V forward voltage, 870nm wavelength). However, the operating temperature upper limit is 70°C versus the TSHA5202's 85°C. Verify application temperature requirements before substitution.

Q: What is the impact of wavelength variation between 875nm and 870nm?

A: Both wavelengths operate within the near-infrared spectrum and are compatible with standard IR receiver components designed for 870–875nm operation. Wavelength tolerance of ±5nm is typical for IR emitter applications. Verify receiver spectral response if application-critical.

Q: Why does HSDL-4251 show higher radiant intensity than TSHA5202?

A: Radiant intensity is measured at different forward current levels. HSDL-4251 specifies 56mW/sr @ 100mA, while TSHA5202 specifies 36mW/sr @ 100mA. Higher intensity may require circuit-level current limiting to match original application performance characteristics.

Q: Can T 1 3/4 package parts replace radial-package TSHA5202 in existing PCB designs?

A: No. T 1 3/4 and radial packages have different mechanical form factors and through-hole footprints. PCB redesign and re-qualification are required for package substitution.

Q: Is SIR-563ST3FN suitable for TSHA5202 replacement?

A: SIR-563ST3FN operates at 940nm wavelength, which differs significantly from TSHA5202 (875nm). This part is suitable only if the application or IR receiver is compatible with 940nm wavelength. Verify receiver spectral response before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts (HSDL-4261, HSDL-4251, HSDL-4220, SIR-563ST3FN) are RoHS3 compliant, meeting current regulatory requirements for electronic component manufacturing.