OP565A Equivalent & Substitute Parts

Part Overview

The OP565A is a 930nm side view radial phototransistor manufactured by TT Electronics/Optek Technology. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The OP565A operates as a photodetector in the near-infrared spectrum and is designed for through-hole mounting applications requiring side view optical orientation.

Substiute Parts

OP565A

TT Electronics/Optek TechnologyIn Stock: 1233OP565A Datasheet

Current PartRFQ

QSE133

onsemiIn Stock: 20490QSE133 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OP565A is determined by the following critical parameters:

• Mounting Type: Through hole radial configuration required
• Orientation: Side view optical orientation required
• Package / Case: Radial form factor required
• Operating Temperature Range: -40°C ~ 100°C compatibility required
• Power Dissipation: Maximum 100 mW rating required
• Dark Current: Maximum 100 nA specification required
• Wavelength Sensitivity: Near-infrared spectrum (880nm–930nm range acceptable)
• Compliance: ROHS3 and REACH compliance required

The QSE133 from onsemi meets these substitution criteria as an active product with compatible electrical and mechanical specifications within the allowed parameter tolerances for this optical sensor category.

Parameter Comparison

Engineering Selection Recommendations

The QSE133 is the designated manufacturer-recommended substitute for the obsolete OP565A. Both components maintain identical dark current specifications (100 nA maximum), identical power dissipation limits (100 mW maximum), and identical operating temperature ranges (-40°C ~ 100°C). Both components are ROHS3 compliant and REACH unaffected.

The QSE133 provides enhanced electrical performance with a 30 V collector-emitter breakdown voltage compared to the OP565A's 15 V rating, offering improved design margin. The wavelength difference (880nm versus 930nm) and viewing angle difference (50° versus 56°) fall within acceptable substitution parameters for near-infrared photodetection applications. The QSE133 is an active product with established supply availability, eliminating obsolescence risk associated with the OP565A.

Frequently Asked Questions (FAQ)

Q: Can the QSE133 directly replace the OP565A in existing designs?

A: The QSE133 is mechanically and electrically compatible as a through-hole radial phototransistor with identical dark current and power dissipation specifications. The 880nm wavelength and 50° viewing angle of the QSE133 are within acceptable substitution parameters for applications originally designed for the 930nm, 56° OP565A. Verification of optical performance in the specific application is required.

Q: What is the significance of the wavelength difference between 930nm and 880nm?

A: Both wavelengths operate in the near-infrared spectrum. The 50nm difference represents a shift within the acceptable substitution range for this optical sensor category. Applications using infrared LEDs or light sources in the 880nm–930nm range will function with the QSE133.

Q: Are there any compliance differences between the OP565A and QSE133?

A: Both components are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution.

Q: What does the higher breakdown voltage (30 V) of the QSE133 mean for circuit design?

A: The QSE133's 30 V collector-emitter breakdown voltage provides greater electrical margin compared to the OP565A's 15 V rating. This allows operation in circuits with higher supply voltages without risk of component damage.

Q: Is the radial through-hole package identical between both parts?

A: Both components use radial through-hole packages with side view optical orientation. Physical form factors are compatible for PCB mounting.