TSHA5201 Infrared Emitter 875nm Equivalent & Substitute Parts

Part Overview

The TSHA5201 is an infrared (IR) emitter manufactured by Vishay Semiconductor Opto Division, designed for 875nm wavelength applications requiring 100mA forward current operation. This component features a radial package configuration with a 24° viewing angle and operates across the -40°C to 85°C temperature range. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Substiute Parts

TSHA5201

Vishay Semiconductor Opto DivisionIn Stock: 5305TSHA5201 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 of the TSHA5201 is determined by the following critical parameters: wavelength (875nm ±5nm tolerance typical for IR emitters), maximum forward current (100mA), forward voltage compatibility (1.4V-1.5V range), viewing angle (24°-30° acceptable range), operating temperature range (minimum -40°C to 85°C coverage), and package type (radial configuration for mechanical fit).

The substitute parts are grouped into two categories:

Category 1: Direct Radial Package Substitutes

• HSDL-4261: Radial package, 870nm wavelength, -40°C to 70°C operating range, 26° viewing angle

Category 2: T 1 3/4 Package Alternatives

• HSDL-4220: T 1 3/4 package, 875nm wavelength, 0°C to 70°C operating range, 30° viewing angle
• HSDL-4251: T 1 3/4 package, 870nm wavelength, -40°C to 85°C operating range, 30° viewing angle
• SIR-563ST3FN: T 1 3/4 package, 940nm wavelength, -25°C to 85°C operating range, 30° viewing angle

Package type determines mechanical compatibility. Wavelength deviation within 870nm-940nm range is acceptable for most IR applications. Forward current and voltage parameters must remain within specified limits.

Parameter Comparison

Engineering Selection Recommendations

For Radial Package Requirement: HSDL-4261 is the primary substitute when radial package configuration is mandatory. This part maintains radial form factor compatibility with the TSHA5201 and operates within the -40°C to 70°C range. The 870nm wavelength is within acceptable tolerance of the original 875nm specification. Operating temperature maximum is reduced to 70°C compared to the original 85°C; verify application requirements before selection.

For Extended Temperature Range (-40°C to 85°C): HSDL-4251 provides full temperature range coverage matching the TSHA5201 specification. This part requires transition to T 1 3/4 package format. The 870nm wavelength and 1.4V forward voltage are compatible with most 875nm-designed circuits.

For Active Product Status with Closest Wavelength Match: HSDL-4220 offers 875nm wavelength matching the original part. This substitute operates within 0°C to 70°C range and requires T 1 3/4 package accommodation. Verify minimum operating temperature requirement of 0°C is acceptable for the application.

For Alternative Wavelength (940nm): SIR-563ST3FN from Rohm Semiconductor provides active product status with full -25°C to 85°C temperature coverage. The 940nm wavelength represents a significant shift from 875nm and is suitable only for applications where wavelength flexibility exists or where 940nm operation is acceptable.

All substitute parts maintain ROHS3 compliance and through-hole mounting compatibility with the original TSHA5201.

Frequently Asked Questions (FAQ)

Q: Can HSDL-4261 directly replace TSHA5201 in existing PCB layouts? A: Yes, HSDL-4261 maintains radial package configuration identical to TSHA5201, allowing direct mechanical substitution. Electrical parameters (100mA maximum current, 1.4V forward voltage, 870nm wavelength) are compatible with circuits designed for the original part. Verify the application does not require operation above 70°C, as HSDL-4261 maximum operating temperature is 70°C versus TSHA5201's 85°C.

Q: What is the impact of switching from 875nm to 870nm wavelength? A: The 5nm wavelength difference between TSHA5201 (875nm) and HSDL-4261 or HSDL-4251 (870nm) is within typical IR emitter tolerance bands. Most IR receiver circuits designed for 875nm operation accept 870nm emitters without modification. Verify receiver spectral response specifications if application involves narrow-band detection.

Q: Why does SIR-563ST3FN operate at 940nm instead of 875nm? A: SIR-563ST3FN represents an alternative wavelength option for applications where 940nm operation is acceptable. The 940nm wavelength is commonly used in IR remote control and sensing applications. This substitute is suitable only if the receiving circuit or application specification permits 940nm wavelength operation.

Q: Can T 1 3/4 package parts replace the radial TSHA5201 in existing designs? A: T 1 3/4 package substitutes (HSDL-4220, HSDL-4251, SIR-563ST3FN) require PCB layout modification due to different mechanical form factor. These parts are not direct drop-in replacements for radial-packaged TSHA5201. Use these substitutes only when PCB redesign is feasible or when radial alternatives are unavailable.

Q: Which substitute offers the best temperature range coverage? A: HSDL-4251 and SIR-563ST3FN both provide -40°C to 85°C operating range, matching the TSHA5201 specification. HSDL-4261 operates to 70°C maximum. HSDL-4220 operates to 70°C maximum with 0°C minimum. Select based on package requirement (radial versus T 1 3/4) and wavelength compatibility.

Q: Are all substitute parts RoHS3 compliant? A: Yes, all listed substitute parts (HSDL-4261, HSDL-4220, HSDL-4251, SIR-563ST3FN) maintain ROHS3 compliance, matching the environmental compliance status of the original TSHA5201.