OP980 Photodiode Equivalent & Substitute Parts

Part Overview

The OP980 is a 890nm PIN photodiode sensor manufactured by TT Electronics/Optek Technology in PLCC-2 surface mount packaging. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The OP980 operates across a spectral range of 400nm to 1100nm with a 50ns response time and 100° viewing angle, designed for near-infrared photodetection applications requiring fast switching characteristics.

Substiute Parts

OP980

TT Electronics/Optek TechnologyIn Stock: 951OP980 Datasheet

Current PartRFQ

TEMD7000X01

Vishay Semiconductor Opto DivisionIn Stock: 21484TEMD7000X01 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP980 is determined by the following critical parameters:

• Diode Type: PIN photodiode architecture must be maintained
• Wavelength Compatibility: Operating wavelength must overlap with the 890nm target within the spectral range
• Reverse Voltage Rating: Minimum 60V DC reverse voltage capability required
• Response Time: Acceptable for applications requiring ≤100ns switching performance
• Viewing Angle: Minimum 100° to maintain optical collection characteristics
• Operating Temperature Range: Must support -25°C to 85°C minimum
• Surface Mount Compatibility: Package must be suitable for surface mount assembly
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status required

The TEMD7000X01 meets these substitution criteria with compatible electrical characteristics and regulatory compliance, despite differences in packaging format and some enhanced specifications.

Parameter Comparison

Engineering Selection Recommendations

The TEMD7000X01 is an active substitute for the obsolete OP980 photodiode. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for new designs and production continuity.

The TEMD7000X01 provides equivalent or superior performance in most parameters: identical 60V reverse voltage rating, wider spectral range (350nm–1120nm vs. 400nm–1100nm), lower dark current (1nA vs. 60nA), and extended operating temperature range (-40°C to 100°C vs. -25°C to 85°C). The 900nm wavelength is compatible with 890nm applications within the overlapping spectral response.

The primary design consideration is response time: the TEMD7000X01 has a 100ns response time compared to the OP980's 50ns. Applications requiring sub-50ns switching performance must evaluate whether the doubled response time is acceptable for the intended function.

Package format differs between components (PLCC-2 vs. 0805/2012 Metric), requiring PCB layout and assembly process modifications. The TEMD7000X01 includes AEC-Q101 automotive qualification, providing additional reliability assurance for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the TEMD7000X01 directly replace the OP980 without circuit modifications?

A: Electrical substitution is feasible due to identical reverse voltage ratings and compatible PIN diode architecture. However, the different package format (PLCC-2 vs. 0805) requires PCB redesign and assembly process changes. The 100ns response time of the TEMD7000X01 must be verified as acceptable for your application's timing requirements.

Q: What is the significance of the 10nm wavelength difference (890nm vs. 900nm)?

A: Both wavelengths fall within the overlapping spectral response range of each photodiode. The OP980 spectral range is 400nm–1100nm and the TEMD7000X01 is 350nm–1120nm. At 890nm and 900nm, both components operate within their peak sensitivity regions. Verify that your optical system's wavelength source and filtering are compatible with both wavelengths.

Q: Why does the TEMD7000X01 have significantly lower dark current (1nA vs. 60nA)?

A: Dark current variation between photodiode designs reflects differences in semiconductor processing, junction design, and manufacturing technology. Lower dark current in the TEMD7000X01 improves signal-to-noise ratio and reduces thermal noise, providing a performance advantage for low-light applications.

Q: Is the 100ns response time of the TEMD7000X01 suitable for high-speed applications?

A: The OP980 specifies 50ns response time. If your application requires response times faster than 100ns, the TEMD7000X01 may not be suitable. Verify the maximum acceptable response time for your signal detection and switching requirements before substitution.

Q: What are the packaging implications of switching from PLCC-2 to 0805?

A: PLCC-2 and 0805 (2012 Metric) are different surface mount package formats with different footprints, lead spacing, and assembly requirements. PCB layout must be redesigned to accommodate the 0805 package. Verify that your assembly equipment and reflow profile are compatible with 0805 component specifications.

Q: Does the TEMD7000X01's AEC-Q101 qualification provide additional benefits?

A: AEC-Q101 is an automotive industry qualification standard ensuring component reliability under automotive operating conditions. If your application requires automotive-grade components, the TEMD7000X01's AEC-Q101 qualification provides documented reliability assurance. Non-automotive applications may not require this qualification.

Q: Are there inventory or lead time advantages to using the TEMD7000X01?

A: The TEMD7000X01 is an active product with 21,396 pieces in stock, compared to the OP980's obsolete status. Active production ensures ongoing availability and shorter lead times for the TEMD7000X01.