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OPB970P51 Equivalent & Substitute Parts
Part Overview
The OPB970P51 is an optical sensor manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This through-beam optical sensor is designed for 0.125" (3.18mm) PCB mount applications with totem pole buffer output configuration. The OPB970P51 is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. Active alternatives within the same product family maintain identical electrical and mechanical specifications, ensuring direct functional compatibility.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | OPB970P51 |
| 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 |
| Current - Supply | 15 mA |
| Voltage - Supply | 4.75V ~ 5.25V |
| Response Time | 70ns |
| Operating Temperature | -40°C ~ 70°C |
| Package / Case | PCB Mount |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitute parts for the OPB970P51 are qualified based on strict electrical and mechanical parameter matching within the Photologic® optical sensor family. All substitute candidates maintain identical specifications across the following critical parameters:
- Sensing Distance: 0.125" (3.18mm)
- Sensing Method: Through-Beam
- Output Configuration: Totem Pole, Buffer
- Mounting Type: Through Hole
- Current - Supply: 15 mA
- Voltage - Supply: 4.75V ~ 5.25V
- Response Time: 70ns
- Operating Temperature: -40°C ~ 70°C
- Package / Case: PCB Mount
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
- REACH Status: REACH Unaffected
Substitute parts differ only in packaging configuration (bulk vs. standard) and product status (active vs. obsolete). All substitute parts are currently active in production, ensuring long-term availability and supply chain continuity.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Sensing Distance | Sensing Method | Output Configuration | Mounting Type | Current - Supply | Voltage - Supply | Response Time | Operating Temperature | Package / Case | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OPB970P51 | TT Electronics/Optek Technology | Obsolete | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | Through Hole | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | PCB Mount | ROHS3 Compliant | 1021 |
| OPB930L51 | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | Through Hole | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | PCB Mount | ROHS3 Compliant | 1285 |
| OPB930L55 | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | Through Hole | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | PCB Mount | ROHS3 Compliant | 672 |
| OPB960L51 | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | Through Hole | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | PCB Mount | ROHS3 Compliant | 1073 |
| OPB960N11 | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | Through Hole | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | PCB Mount | ROHS3 Compliant | 1052 |
| OPB960N51 | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | Through Hole | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | PCB Mount | ROHS3 Compliant | 8810 |
| OPB960N55 | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | Through Hole | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | PCB Mount | ROHS3 Compliant | 1745 |
| OPB960P51 | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | Through Hole | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | PCB Mount | ROHS3 Compliant | 1144 |
| OPB960T11 | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | Through Hole | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | PCB Mount | ROHS3 Compliant | 1065 |
| OPB960T51 | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | Through Hole | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | PCB Mount | ROHS3 Compliant | 20199 |
| OPB960T55 | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | Through Hole | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | PCB Mount | ROHS3 Compliant | 1239 |
Engineering Selection Recommendations
All substitute parts listed maintain full electrical and mechanical compatibility with the OPB970P51. Selection among active alternatives should prioritize inventory availability and supply chain continuity. OPB960T51 offers the highest inventory level at 20,199 units, providing optimal supply security for high-volume applications. OPB960N51 with 8,810 units in stock represents a secondary option for sustained availability.
All substitute parts carry ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. The transition from the obsolete OPB970P51 to any active substitute part presents no compliance or certification barriers.
Frequently Asked Questions (FAQ)
Q: Are all listed substitute parts electrically identical to the OPB970P51?
A: Yes. All substitute parts maintain identical electrical specifications including 15 mA supply current, 4.75V to 5.25V supply voltage range, 70ns response time, and totem pole buffer output configuration. Direct functional substitution is supported without circuit modification.
Q: What is the difference between OPB960T51 and OPB960N51?
A: Both parts share identical electrical and mechanical specifications. The difference lies in the third character of the part number suffix, which indicates internal design variant within the OPB960 base product family. Both are functionally equivalent for the OPB970P51 application.
Q: Does packaging type affect substitution compatibility?
A: Packaging differences (bulk vs. standard) do not affect electrical or mechanical compatibility. All substitute parts use identical PCB mount through-hole packaging. Packaging designation reflects order quantity and delivery format only.
Q: Can I use OPB930 series parts as substitutes for OPB970P51?
A: Yes. OPB930L51 and OPB930L55 maintain all critical electrical and mechanical parameters required for OPB970P51 substitution. The OPB930 base product number indicates a different design variant within the Photologic® family, but electrical performance is identical.
Q: What is the recommended substitute for new designs?
A: OPB960T51 is recommended for new designs due to highest inventory availability (20,199 units) and active product status, ensuring long-term supply continuity and design stability.
Q: Are there any temperature or compliance limitations with substitute parts?
A: No. All substitute parts operate across the identical temperature range of -40°C to 70°C and maintain ROHS3 compliance and REACH unaffected status. No operational or regulatory limitations apply to substitution.
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