TSML1030 Equivalent & Substitute Parts

Part Overview

The TSML1030 is an infrared (IR) emitter operating at 940nm wavelength, manufactured by Vishay Semiconductor Opto Division. This surface mount component is designed for applications requiring near-infrared light emission with a forward current rating of 100mA and typical forward voltage of 1.2V. The part is currently active in production with full RoHS3 compliance and REACH unaffected status. Substitute parts may be required due to inventory constraints, manufacturing discontinuation, or specific application requirements that align with alternative component specifications.

Substiute Parts

TSML1030

Vishay Semiconductor Opto DivisionIn Stock: 7731TSML1030 Datasheet

Current PartRFQ

IR91-21C/TR7

Everlight Electronics Co LtdIn Stock: 46253IR91-21C/TR7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TSML1030 is determined by the following critical parameters:

• Wavelength: Must be 940nm to maintain spectral compatibility with receiver circuits and optical filters
• Forward Voltage (Vf): Must be 1.2V typical to ensure circuit compatibility without redesign
• Radiant Intensity (Ie): Must meet or exceed 3mW/sr @ 20mA for optical performance requirements
• Operating Temperature Range: Must support the application's thermal environment
• Mounting Type: Must be surface mount compatible with existing PCB layouts
• RoHS and Compliance Status: Must maintain regulatory compliance requirements

The IR91-21C/TR7 from Everlight Electronics qualifies as a substitute based on matching wavelength, forward voltage, radiant intensity, and compliance certifications. Variations in maximum forward current (65mA vs 100mA), viewing angle (25° vs 24°), and package mechanical design (Gull Wing vs Yoke Bend) represent acceptable parameter differences within the scope of functional equivalence for this component category.

Parameter Comparison

Engineering Selection Recommendations

Both the TSML1030 and IR91-21C/TR7 maintain active production status with full RoHS3 compliance and identical moisture sensitivity ratings. Selection between these components should be based on the following criteria:

TSML1030 Selection: Choose when maximum forward current capacity of 100mA is required or when operating temperatures below -25°C are specified. The extended temperature range (-40°C to 85°C) provides margin for harsh environment applications.

IR91-21C/TR7 Selection: Choose when the 65mA maximum forward current rating is sufficient for the application design. This part is suitable for standard industrial temperature ranges (-25°C to 85°C). The Gull Wing package configuration may offer advantages in specific PCB assembly processes compared to the Yoke Bend design.

Both parts deliver identical radiant intensity performance and forward voltage characteristics, ensuring optical and electrical circuit compatibility when current and temperature requirements are met.

Frequently Asked Questions (FAQ)

Q: Can IR91-21C/TR7 replace TSML1030 in all applications?

A: Substitution is valid when the application's maximum forward current requirement does not exceed 65mA and the operating temperature range remains within -25°C to 85°C. If the design requires 100mA operation or lower temperature operation below -25°C, the TSML1030 is the appropriate choice.

Q: Are the package differences between Yoke Bend and Gull Wing significant?

A: Both packages are 2-SMD surface mount configurations suitable for automated PCB assembly. The mechanical difference affects solder joint geometry and may influence reflow profile optimization, but both are functionally compatible with standard SMD assembly equipment.

Q: Do both parts have identical optical output?

A: Yes. Both parts specify 3mW/sr minimum radiant intensity at 20mA forward current, ensuring equivalent optical performance in receiver circuits. The viewing angle difference (24° vs 25°) is negligible for most applications.

Q: Are there compliance or certification differences?

A: No. Both parts are ROHS3 compliant, carry identical moisture sensitivity levels (MSL 3), and maintain active product status. Regulatory requirements are equivalent.

Q: What is the impact of the 1°C viewing angle difference?

A: The 1° difference (24° vs 25°) represents a negligible variation in optical beam width and is not a limiting factor for substitution in standard IR emitter applications.