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OPB990L11 Equivalent & Substitute Parts
Part Overview
The OPB990L11 is an optical sensor manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This through-beam optical sensor features a 0.125" (3.18mm) sensing distance with wire leads for chassis mount applications. The OPB990L11 is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring this sensor category.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | TT Electronics/Optek Technology |
| Series | Photologic® |
| Category | Optical Sensors |
| Sensing Distance | 0.125" (3.18mm) |
| Sensing Method | Through-Beam |
| Output Configuration | Totem Pole, Buffer |
| Mounting Type | Chassis Mount |
| Current - Supply | 15 mA |
| Voltage - Supply | 4.75V ~ 5.25V |
| Response Time | 70ns |
| Operating Temperature | -40°C ~ 70°C |
| Package / Case | Module, Wire Leads |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the OPB990L11 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: Chassis Mount
- Current - Supply: 15 mA
- Voltage - Supply: 4.75V ~ 5.25V
- Response Time: 70ns
- Operating Temperature: -40°C ~ 70°C
- Package / Case: Module, Wire Leads
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
All substitute parts listed maintain identical electrical and mechanical specifications. Differences exist only in packaging designation (Bulk vs. standard), product status (Active vs. Obsolete), and RoHS compliance level. The OPB990L11Z serves as the direct equivalent with identical specifications and Bulk packaging. Additional substitutes from the OPB930, OPB940, and OPB980 base product families maintain full parameter compatibility.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Sensing Distance | Sensing Method | Output Configuration | Current - Supply | Voltage - Supply | Response Time | Operating Temperature | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| OPB990L11 | TT Electronics/Optek Technology | Obsolete | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | RoHS non-compliant | 703 |
| OPB990L11Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 2944 |
| OPB930W51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 2332 |
| OPB940W51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 2247 |
| OPB940W55Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1300 |
| OPB980L11Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1101 |
| OPB980L51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1063 |
| OPB980L55Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 20399 |
| OPB980P11Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1055 |
| OPB980P51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 2412 |
| OPB980P55Z | TT Electronics / Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | Totem Pole, Buffer | 15 mA | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 995 |
Engineering Selection Recommendations
The OPB990L11 is obsolete and no longer in active production. All listed substitute parts maintain identical electrical and mechanical specifications, ensuring direct functional equivalence in circuit applications.
OPB990L11Z is the primary direct substitute, offering identical specifications with Active product status and ROHS3 compliance. This part carries the highest inventory availability at 2944 units.
OPB980L55Z provides the highest inventory level at 20399 units while maintaining full parameter compatibility and Active status with ROHS3 compliance.
All substitute parts carry ROHS3 compliance, whereas the original OPB990L11 is RoHS non-compliant. This compliance upgrade is applicable for new designs and systems requiring regulatory adherence.
All substitute parts are manufactured by TT Electronics/Optek Technology and belong to the Photologic® series, ensuring consistency with the original design intent and manufacturing standards.
Frequently Asked Questions (FAQ)
Q: Can OPB990L11Z be used as a direct replacement for OPB990L11?
A: Yes. OPB990L11Z maintains identical electrical and mechanical specifications including sensing distance, sensing method, output configuration, supply current, supply voltage, response time, and operating temperature range. The primary difference is product status (Active vs. Obsolete) and RoHS compliance level (ROHS3 vs. non-compliant).
Q: What is the difference between OPB980L55Z and OPB980P55Z?
A: Both parts maintain identical electrical and mechanical specifications. The difference lies in the internal designation within the OPB980 base product family. Both are Active, ROHS3 compliant, and fully compatible with the OPB990L11 application requirements.
Q: Are all substitute parts compatible with the original OPB990L11 circuit design?
A: Yes. All listed substitute parts maintain identical specifications for sensing distance (0.125"), sensing method (Through-Beam), output configuration (Totem Pole, Buffer), supply voltage (4.75V ~ 5.25V), supply current (15 mA), response time (70ns), and operating temperature range (-40°C ~ 70°C). No circuit modifications are required.
Q: What is the significance of the packaging designation (Bulk)?
A: Bulk packaging indicates the standard commercial packaging format for active production parts. The OPB990L11 uses standard packaging, while substitute parts use Bulk packaging. Both packaging formats contain identical components and specifications.
Q: Why do substitute parts have ROHS3 compliance while the original does not?
A: The OPB990L11 predates current RoHS regulations and was manufactured under earlier standards. All active substitute parts have been updated to meet ROHS3 compliance requirements, making them suitable for applications requiring regulatory adherence.
Q: Which substitute part has the best availability?
A: OPB980L55Z has the highest inventory at 20399 units, followed by OPB990L11Z at 2944 units. Both maintain full compatibility with the OPB990L11 specifications.
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