QSE112 Equivalent & Substitute Parts

Part Overview

The QSE112 is an optical sensor phototransistor manufactured by onsemi, designed for 880nm side-look applications. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The QSE112 operates as a photodetector in the near-infrared spectrum and requires identification of compatible alternatives that maintain functional equivalence within the allowed electrical and mechanical parameters.

Substiute Parts

QSE112

onsemiIn Stock: 715QSE112 Datasheet

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QSE113

onsemiIn Stock: 30621QSE113 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the QSE112 is based on the following critical parameters that define functional equivalence:

• Wavelength: 880nm (primary detection spectrum)
• Device Type: Phototransistor (optical sensor classification)
• Manufacturer: onsemi (same manufacturer ensures design compatibility)
• Orientation: Side View (mechanical and optical orientation requirement)
• Compliance: REACH Unaffected and EAR99 classification (regulatory alignment)

The QSE113 qualifies as a direct substitute based on matching wavelength (880nm), device type (phototransistor), manufacturer (onsemi), and side-view orientation. Both components share identical regulatory compliance status and export classification.

Parameter Comparison

Engineering Selection Recommendations

The QSE113 is the designated substitute for the obsolete QSE112. Selection is based on:

• Product Status Alignment: QSE113 maintains active production status, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: Both components share identical REACH and ECCN classifications, eliminating compliance barriers for substitution.
• Functional Equivalence: Matching wavelength (880nm), device type (phototransistor), and optical orientation (side view) ensure direct functional replacement.
• RoHS Compliance: QSE113 is ROHS3 compliant, meeting modern environmental and regulatory standards.

Frequently Asked Questions (FAQ)

Q: Can QSE113 directly replace QSE112 in existing designs?

A: Yes. Both components are 880nm phototransistors with side-view orientation from onsemi. The QSE113 is specified for through-hole mounting in radial, side-view package configuration. Verify that your PCB layout accommodates the radial, side-view package geometry before implementation.

Q: What is the primary reason for substitution?

A: The QSE112 is obsolete. The QSE113 is an active product from the same manufacturer with identical wavelength and device classification, making it the appropriate replacement for ongoing production and support.

Q: Are there compliance differences between QSE112 and QSE113?

A: No. Both components are REACH Unaffected and classified as EAR99. The QSE113 additionally carries ROHS3 compliance certification.

Q: What packaging differences exist?

A: The QSE113 is specified as radial, side-view through-hole package. The QSE112 packaging details are not provided in the available documentation. Confirm package compatibility with your mechanical design requirements.

Q: What are the electrical operating limits of QSE113?

A: Maximum collector-emitter breakdown voltage is 30V, maximum dark current is 100nA, maximum power dissipation is 100mW, and operating temperature range is -40°C to 100°C. Verify these parameters against your circuit design requirements.

Q: Is the viewing angle specification critical for substitution?

A: The QSE113 has a 50° viewing angle. If your application requires a different viewing angle, this parameter must be evaluated against your optical system design. The QSE112 viewing angle is not documented.