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OPB940L55 Equivalent & Substitute Parts
Part Overview
The OPB940L55 is a through-beam optical sensor manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This component is designed for 0.125" (3.18mm) PCB-mounted applications with totem pole buffer output configuration. The OPB940L55 is currently classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications requiring compatible through-beam optical sensing functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | OPB940L55 |
| Manufacturer | TT Electronics/Optek Technology |
| Category | Optical Sensors |
| Series | Photologic® |
| Sensing Distance | 0.125" (3.18mm) |
| Sensing Method | Through-Beam |
| Output Configuration | Totem Pole, Buffer |
| Mounting Type | Through Hole |
| Voltage - Supply | 4.75V ~ 5.25V |
| Current - Supply | 15 mA |
| Response Time | 70ns |
| Operating Temperature | -40°C ~ 70°C |
| Package / Case | PCB Mount |
| RoHS Status | ROHS3 Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility for the OPB940L55 is determined by strict equivalence across the following critical parameters:
- Sensing Distance: 0.125" (3.18mm)
- Sensing Method: Through-Beam
- Output Configuration: Totem Pole, Buffer
- Mounting Type: Through Hole
- Voltage Supply Range: 4.75V ~ 5.25V
- Current Supply: 15 mA
- Response Time: 70ns
- Operating Temperature Range: -40°C ~ 70°C
- Package Type: PCB Mount
- Series: Photologic®
- Manufacturer: TT Electronics/Optek Technology
All substitute parts listed maintain identical electrical and mechanical specifications across these parameters. Substitutes are available in active product status with current manufacturing support and inventory availability.
Parameter Comparison
| Part Number | Product Status | Sensing Distance | Output Configuration | Voltage Supply | Current Supply | Response Time | Operating Temperature | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|
| OPB940L55 | Obsolete | 0.125" (3.18mm) | Totem Pole, Buffer | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | 713 |
| OPB930L51 | Active | 0.125" (3.18mm) | Totem Pole, Buffer | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | 1285 |
| OPB930L55 | Active | 0.125" (3.18mm) | Totem Pole, Buffer | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | 672 |
| OPB960L51 | Active | 0.125" (3.18mm) | Totem Pole, Buffer | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | 1073 |
| OPB960N11 | Active | 0.125" (3.18mm) | Totem Pole, Buffer | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | 1052 |
| OPB960N51 | Active | 0.125" (3.18mm) | Totem Pole, Buffer | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | 8810 |
| OPB960N55 | Active | 0.125" (3.18mm) | Totem Pole, Buffer | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | 1745 |
| OPB960P51 | Active | 0.125" (3.18mm) | Totem Pole, Buffer | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | 1144 |
| OPB960T11 | Active | 0.125" (3.18mm) | Totem Pole, Buffer | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | 1065 |
| OPB960T51 | Active | 0.125" (3.18mm) | Totem Pole, Buffer | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | 20199 |
| OPB960T55 | Active | 0.125" (3.18mm) | Totem Pole, Buffer | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | 1239 |
Engineering Selection Recommendations
All listed substitute parts are manufactured by TT Electronics/Optek Technology and maintain ROHS3 compliance and REACH unaffected status consistent with the OPB940L55. Selection among substitute options should be based on product availability and inventory levels. The OPB960T51 offers the highest current inventory at 20,199 units, providing supply chain stability for high-volume applications. The OPB930L51 and OPB960N51 also maintain substantial inventory levels exceeding 1,000 units each.
All substitute parts are classified as active products with ongoing manufacturer support, eliminating obsolescence risk associated with the OPB940L55. Direct pin-for-pin and functional compatibility is established across all electrical and mechanical parameters.
Frequently Asked Questions (FAQ)
Q: Can OPB930L51, OPB930L55, OPB960L51, OPB960N11, OPB960N51, OPB960N55, OPB960P51, OPB960T11, OPB960T51, and OPB960T55 be used as direct replacements for OPB940L55?
A: Yes. All listed parts maintain identical specifications across sensing distance, sensing method, output configuration, mounting type, voltage supply, current supply, response time, and operating temperature range. Direct substitution is supported without circuit modification.
Q: What is the primary reason for seeking substitute parts for OPB940L55?
A: The OPB940L55 is classified as obsolete. Substitute parts are active products with current manufacturing support and inventory availability, ensuring long-term supply chain continuity.
Q: Are there packaging differences between OPB940L55 and the substitute parts?
A: The OPB940L55 is specified with packaging listed as "-" (not defined). All substitute parts are supplied in bulk packaging and maintain identical PCB mount case type. Packaging format differences do not affect electrical or mechanical compatibility.
Q: Do all substitute parts meet the same compliance standards as OPB940L55?
A: Yes. All substitute parts are ROHS3 compliant and REACH unaffected, matching the compliance profile of OPB940L55.
Q: Which substitute part offers the best inventory availability?
A: OPB960T51 maintains the highest inventory level at 20,199 units, followed by OPB960N51 at 8,810 units. Both parts provide reliable supply for production requirements.
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