QEB441TR Equivalent & Substitute Parts

Part Overview

The QEB441TR is a visible light emitter manufactured by onsemi, designed for 730nm wavelength applications with a maximum forward current of 100mA. This component features a 2-PLCC surface mount package and operates across a temperature range of -55°C to 100°C. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

QEB441TR

onsemiIn Stock: 1178QEB441TR Datasheet

Current PartRFQ

VSMY3850-GS08

Vishay Semiconductor Opto DivisionIn Stock: 2321VSMY3850-GS08 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the QEB441TR requires matching of critical electrical and mechanical parameters that define functional equivalence for emitter applications. The allowed substitution parameters are:

• Current rating: Maximum DC forward current of 100mA
• Viewing angle: 120° optical field
• Mounting type: Surface mount configuration
• Package compatibility: 2-lead surface mount variants
• Operating temperature range: Minimum coverage of specified application temperatures
• Radiant intensity: Output power characteristics at rated current

The VSMY3850-GS08 is identified as a substitute based on matching current rating (100mA), viewing angle (120°), surface mount configuration, and 2-lead package design. However, this substitute operates at a different wavelength (850nm infrared versus 730nm visible) and forward voltage (1.6V versus 2.1V), requiring circuit-level evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

The QEB441TR is obsolete and no longer in active production. The VSMY3850-GS08 is an active product from Vishay Semiconductor Opto Division, providing design continuity for new production and long-term availability.

Both components share identical current ratings (100mA) and viewing angles (120°), with compatible surface mount configurations. The VSMY3850-GS08 operates at a lower forward voltage (1.6V versus 2.1V) and delivers higher radiant intensity (12mW/sr versus 2mW/sr at 100mA).

The operating temperature range of the VSMY3850-GS08 (-40°C to 85°C) is narrower than the QEB441TR (-55°C to 100°C). Applications requiring the full -55°C to 100°C range must evaluate whether the substitute's temperature limits are acceptable.

The VSMY3850-GS08 carries ROHS3 compliance and is REACH unaffected. The QEB441TR is REACH unaffected with MSL 1 rating, while the substitute has MSL 3 rating, requiring controlled storage conditions (168 hours maximum at 85% relative humidity).

Frequently Asked Questions (FAQ)

Q: Can the VSMY3850-GS08 directly replace the QEB441TR in existing designs?

A: Direct replacement requires circuit evaluation. Both components share 100mA current rating and 120° viewing angle with surface mount packaging. However, the wavelength differs (850nm infrared versus 730nm visible), and forward voltage is lower (1.6V versus 2.1V). Applications dependent on visible light emission at 730nm cannot use the infrared substitute. Circuits designed for 2.1V forward voltage must accommodate the 1.6V characteristic of the substitute.

Q: What are the package differences between QEB441TR and VSMY3850-GS08?

A: The QEB441TR uses a 2-PLCC package, while the VSMY3850-GS08 uses a 2-SMD J-Lead package. Both are surface mount configurations with two leads. Physical footprint and PCB layout compatibility must be verified before substitution.

Q: Are there temperature range limitations with the VSMY3850-GS08?

A: The VSMY3850-GS08 operates from -40°C to 85°C, compared to the QEB441TR range of -55°C to 100°C. Applications requiring operation below -40°C or above 85°C cannot use this substitute without thermal management modifications or alternative component selection.

Q: What is the moisture sensitivity difference between these components?

A: The QEB441TR has MSL 1 (unlimited moisture sensitivity level), while the VSMY3850-GS08 has MSL 3 (168 hours maximum exposure at 85% relative humidity and 85°C). The substitute requires controlled storage and handling to prevent moisture absorption during manufacturing processes.

Q: How do the radiant intensity specifications compare?

A: The VSMY3850-GS08 delivers 12mW/sr at 100mA, compared to 2mW/sr for the QEB441TR at the same current. The substitute provides six times higher radiant intensity, which may affect optical system design and detector sensitivity requirements.