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OPB990N51Z Equivalent & Substitute Parts
Part Overview
The OPB990N51Z is a through-beam optical sensor module manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This component is classified as an optical sensor with a 0.125" (3.18mm) sensing distance, designed for chassis mount applications with wire leads. The OPB990N51Z is currently listed as obsolete, making equivalent substitute parts necessary for ongoing system support and new designs requiring compatible through-beam optical sensing functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | OPB990N51Z |
| 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 | 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 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
| HTSUS | 8541.49.8000 |
Substitute Part Grouping Explanation
Substitute parts for the OPB990N51Z are qualified based on strict electrical and mechanical parameter equivalence. All substitute components 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: 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
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
- REACH Status: REACH Unaffected
All substitute parts are manufactured by TT Electronics/Optek Technology within the Photologic® series. The primary distinction between the OPB990N51Z and its substitutes is product status: the OPB990N51Z is obsolete, while all qualified substitutes maintain active product status with current inventory availability.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Sensing Distance | Sensing Method | Output Configuration | Current - Supply | Voltage - Supply | Response Time | Operating Temperature | Package / Case | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OPB990N51Z | 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 | Module, Wire Leads | ROHS3 Compliant | 960 |
| 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 | Module, Wire Leads | 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 | Module, Wire Leads | 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 | Module, Wire Leads | 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 | Module, Wire Leads | 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 | Module, Wire Leads | 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 | Module, Wire Leads | 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 | Module, Wire Leads | 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 | Module, Wire Leads | 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 | Module, Wire Leads | ROHS3 Compliant | 995 |
| OPB980T11Z | 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 | Module, Wire Leads | ROHS3 Compliant | 1067 |
Engineering Selection Recommendations
All listed substitute parts are qualified direct replacements for the OPB990N51Z based on identical electrical and mechanical specifications. Selection among the substitute options should be based on the following factors:
Product Status and Availability: All substitute parts maintain active product status with TT Electronics/Optek Technology, ensuring long-term availability and supply chain stability. The OPB980L55Z offers the highest inventory level at 20,399 units, providing superior availability for high-volume applications.
Compliance and Certifications: All substitute parts are ROHS3 compliant, REACH unaffected, and carry identical MSL ratings (1 - Unlimited), ensuring regulatory equivalence across all options.
Packaging Considerations: All substitute parts are supplied in bulk packaging, consistent with the original OPB990N51Z specification. Wire lead configuration and chassis mount design remain unchanged across all alternatives.
Frequently Asked Questions (FAQ)
Q: Can OPB980L55Z, OPB980P51Z, OPB940W51Z, OPB930W51Z, OPB980L11Z, OPB980L51Z, OPB980P11Z, OPB980P55Z, and OPB980T11Z be used as direct replacements for OPB990N51Z?
A: Yes. All listed parts are direct electrical and mechanical equivalents. They share identical sensing distance (0.125" / 3.18mm), sensing method (through-beam), output configuration (totem pole, buffer), supply current (15 mA), supply voltage (4.75V ~ 5.25V), response time (70ns), operating temperature range (-40°C ~ 70°C), and package type (module, wire leads). All are manufactured by TT Electronics/Optek Technology within the Photologic® series.
Q: Why is the OPB990N51Z listed as obsolete?
A: The OPB990N51Z has reached end-of-life status with TT Electronics/Optek Technology. However, functionally equivalent active alternatives are available with identical performance specifications and superior inventory availability.
Q: Are there any differences in compliance or certifications between the OPB990N51Z and its substitutes?
A: No. All parts maintain identical RoHS3 compliance, REACH unaffected status, and MSL rating (1 - Unlimited). Regulatory and environmental compliance is equivalent across all options.
Q: Which substitute part offers the best availability?
A: OPB980L55Z provides the highest inventory level at 20,399 units, making it the optimal choice for applications requiring immediate or high-volume procurement.
Q: Are the wire lead configurations identical across all substitute parts?
A: Yes. All substitute parts maintain the same module configuration with wire leads and chassis mount design as the original OPB990N51Z, ensuring compatibility with existing mechanical and electrical interfaces.
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