QED522 Infrared Emitter - Equivalent & Substitute Parts

Part Overview

The QED522 is an infrared (IR) emitter operating at 880nm wavelength, designed for through-hole mounting in TO-46-2 package configuration. This component is rated for 100mA DC forward current with a forward voltage of 1.8V typical and radiant intensity of 20mW/sr at rated current. The QED522 is classified as obsolete, making identification of functionally equivalent substitute components necessary for ongoing design support and production continuity.

Substiute Parts

QED522

onsemiIn Stock: 8842QED522 Datasheet

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OP130

TT Electronics/Optek TechnologyIn Stock: 1760OP130 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the QED522 is evaluated based on the following critical parameters that define functional equivalence for infrared emitter applications:

Primary Substitution Criteria:

• Package / Case: TO-46-2 (mechanical and thermal compatibility)
• Mounting Type: Through Hole (board-level integration compatibility)
• Current - DC Forward (If) Max: 100mA (circuit design compatibility)
• Wavelength: 880nm nominal (application-specific spectral requirement)
• Operating Temperature Range: Must encompass or exceed -40°C to 100°C

Secondary Compatibility Parameters:

• Voltage - Forward (Vf) Typical: 1.8V (power supply and circuit design)
• Radiant Intensity (Ie) Min @ If: 20mW/sr @ 100mA (optical output performance)
• Viewing Angle: 20° (optical beam characteristics)

The OP130 is identified as a substitute part. While the OP130 operates at 935nm wavelength (55nm longer than the QED522), it maintains electrical compatibility through identical maximum forward current (100mA), similar forward voltage (1.75V vs. 1.8V), equivalent package configuration (TO-46-2), and through-hole mounting. The OP130 extends the operating temperature range to -65°C to 125°C, providing broader environmental coverage.

Parameter Comparison

Engineering Selection Recommendations

The OP130 is available as an active product with current manufacturing support, addressing the obsolescence status of the QED522. The OP130 maintains mechanical compatibility through identical TO-46-2 package configuration and through-hole mounting, ensuring direct board-level integration without redesign.

Electrical parameters are closely aligned: both components operate at 100mA maximum forward current with similar forward voltages (1.75V vs. 1.8V). The OP130 provides an extended operating temperature range (-65°C to 125°C versus -40°C to 100°C), offering broader environmental coverage for applications requiring enhanced thermal performance.

The primary design consideration is wavelength difference: the OP130 operates at 935nm compared to the QED522's 880nm. This 55nm shift places the OP130 in the near-infrared spectrum, suitable for applications utilizing silicon photodiode detectors or infrared sensors designed for the 900-950nm band. Applications requiring specific 880nm wavelength performance must evaluate detector spectral response compatibility.

The OP130 carries ROHS3 compliance certification, supporting regulatory requirements for restricted substance management. Both components share identical REACH and ECCN classifications (EAR99), maintaining export and supply chain compliance equivalence.

Frequently Asked Questions (FAQ)

Q: Can the OP130 directly replace the QED522 in existing circuit designs?

A: Mechanical and electrical substitution is direct: identical package (TO-46-2), mounting type (through-hole), and maximum forward current (100mA) enable board-level integration without modification. Forward voltage compatibility is maintained (1.75V vs. 1.8V). Wavelength difference (935nm vs. 880nm) requires verification that the receiving photodiode or sensor has adequate spectral response at 935nm.

Q: What is the significance of the wavelength difference between 880nm and 935nm?

A: Wavelength determines the spectral characteristics of the emitted light. The 880nm QED522 is optimized for detectors with peak sensitivity in the 850-900nm range, while the 935nm OP130 targets detectors with peak sensitivity in the 900-950nm range. Substitution is valid only if the receiving detector's spectral response curve includes adequate sensitivity at 935nm.

Q: Are there package or mechanical differences between the QED522 and OP130?

A: Both components use TO-46-2 package configuration with through-hole mounting. The OP130 specifies "Lens Top Metal Can" construction, indicating integrated optical focusing. This represents a mechanical enhancement that does not prevent substitution but may alter optical beam characteristics compared to the QED522.

Q: Does the OP130's extended temperature range affect substitution suitability?

A: The OP130's operating range (-65°C to 125°C) exceeds the QED522's range (-40°C to 100°C). This provides additional environmental margin and is not a substitution limitation. Applications operating within the original -40°C to 100°C specification are fully supported by the OP130.

Q: What compliance certifications apply to the OP130?

A: The OP130 is ROHS3 compliant and carries EAR99 ECCN classification. Both components share identical REACH status (REACH Unaffected) and HTSUS classification (8541.41.0000), maintaining regulatory equivalence for supply chain and export purposes.