TSUS5202-AS12 Equivalent & Substitute Parts

Part Overview

The TSUS5202-AS12 is an infrared (IR) emitter manufactured by Vishay Semiconductor Opto Division, designed for applications requiring 950nm wavelength emission. This component operates at 1.3V forward voltage with a maximum DC forward current of 150mA and delivers 20mW/sr radiant intensity at 100mA. The device features a 30° viewing angle in a radial 5mm diameter through-hole package.

The TSUS5202-AS12 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

TSUS5202-AS12

Vishay Semiconductor Opto DivisionIn Stock: 1133TSUS5202-AS12 Datasheet

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BIR-BM53E4G-1

American Bright Optoelectronics CorporationIn Stock: 17066BIR-BM53E4G-1 Datasheet

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BIR-BM53E4G-1

American Bright Optoelectronics CorporationIn Stock: 17066BIR-BM53E4G-1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the TSUS5202-AS12 is based on the following critical parameters:

Wavelength Compatibility: The substitute part operates at 940nm, which differs from the primary specification of 950nm. This represents a 10nm shift in the infrared spectrum. Both wavelengths fall within the near-infrared region and are commonly used in complementary IR receiver applications.

Electrical Parameters: The substitute part (BIR-BM53E4G-1) operates at a lower maximum forward current (100mA versus 150mA) and lower typical forward voltage (1.25V versus 1.3V). The radiant intensity specification is provided at a different measurement current (50mA versus 100mA), making direct comparison of absolute output values necessary.

Mechanical Compatibility: Both components utilize through-hole mounting with radial package configurations in 5mm form factors, ensuring physical interchangeability in standard PCB layouts.

Environmental and Compliance: Both parts operate across the identical temperature range (-40°C ~ 85°C) and maintain ROHS3 compliance, supporting equivalent environmental standards.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The TSUS5202-AS12 is classified as obsolete, while the BIR-BM53E4G-1 maintains active product status. This distinction is significant for long-term supply chain planning and technical support availability.

Compliance Alignment: Both components maintain ROHS3 compliance and share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, ensuring regulatory equivalence for procurement and export purposes.

Inventory Availability: The BIR-BM53E4G-1 demonstrates substantially higher inventory levels (16,968 pieces) compared to the TSUS5202-AS12 (1,102 pieces), supporting sustained component availability for production requirements.

Electrical Performance Trade-offs: Selection of the BIR-BM53E4G-1 requires circuit design evaluation due to reduced maximum forward current (100mA versus 150mA) and lower typical forward voltage (1.25V versus 1.3V). Applications operating the original component at currents exceeding 100mA require current limiting circuit modifications.

Spectral Characteristics: The 10nm wavelength difference (940nm versus 950nm) is compatible with standard IR receiver photodiodes designed for the 850nm to 950nm spectral band. Verification of receiver spectral response characteristics is necessary for applications with narrow-band receiver specifications.

Viewing Angle Consideration: The substitute part features a narrower viewing angle (25° versus 30°), which may affect applications requiring wider angular emission patterns.

Frequently Asked Questions (FAQ)

Q: Can the BIR-BM53E4G-1 directly replace the TSUS5202-AS12 in existing circuit designs?

A: Direct replacement is possible for applications operating the original component at forward currents of 100mA or below. Circuits designed to operate at the maximum 150mA specification require current limiting modifications. The 10nm wavelength difference is compatible with standard IR receiver designs covering the 850nm to 950nm range.

Q: What is the significance of the wavelength difference between 950nm and 940nm?

A: Both wavelengths operate within the near-infrared spectrum and are compatible with complementary IR receiver photodiodes. The 10nm difference represents approximately 1% spectral shift. Applications with receiver spectral response specifications centered on 950nm may experience reduced coupling efficiency with the 940nm emitter.

Q: How do the radiant intensity specifications compare between the two parts?

A: The TSUS5202-AS12 specifies 20mW/sr at 100mA, while the BIR-BM53E4G-1 specifies 19.42mW/sr at 50mA. Direct comparison requires normalizing to identical measurement currents. At 50mA operation, the original part would deliver proportionally lower intensity than the 20mW/sr specification.

Q: Are there mechanical compatibility concerns with the package differences?

A: Both components utilize through-hole radial packages in 5mm form factors. The TSUS5202-AS12 specifies T 1 3/4 package designation, while the BIR-BM53E4G-1 specifies radial package. Standard 5mm through-hole PCB footprints accommodate both configurations without modification.

Q: What compliance certifications apply to both components?

A: Both the TSUS5202-AS12 and BIR-BM53E4G-1 maintain ROHS3 compliance. Both share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications. The BIR-BM53E4G-1 additionally specifies MSL 1 (Unlimited) moisture sensitivity and REACH Unaffected status.

Q: Does the narrower viewing angle of the substitute part affect system performance?

A: The BIR-BM53E4G-1 features a 25° viewing angle compared to the original 30° specification. Applications requiring wide-angle emission patterns may experience reduced coverage. System-level optical design review is necessary to confirm adequate receiver coupling at the intended operating distances and angles.

Q: What is the impact of the lower maximum forward current specification?

A: The BIR-BM53E4G-1 supports a maximum forward current of 100mA versus 150mA for the original part. Existing circuit designs operating at currents exceeding 100mA require series current limiting resistor modifications to comply with the substitute part's maximum rating.