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OPB992T51 Equivalent & Substitute Parts
Part Overview
The OPB992T51 is a through-beam optical sensor from TT Electronics/Optek Technology's Photologic® series, designed for 0.125" (3.18mm) sensing distance applications with wire lead connectivity. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible functionality.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | OPB992T51 |
| Manufacturer | TT Electronics/Optek Technology |
| Category | Optical Sensors |
| Series | Photologic® |
| Sensing Distance | 0.125" (3.18mm) |
| Sensing Method | Through-Beam |
| Output Configuration | Totem Pole, Inverted |
| 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 |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
| REACH Status | REACH Unaffected |
Substitute Part Grouping Explanation
Substitute parts for the OPB992T51 are qualified based on strict electrical and mechanical parameter matching:
Primary Substitution Criteria:
- Sensing distance: 0.125" (3.18mm)
- Sensing method: Through-Beam
- Output configuration: Totem Pole, Inverted
- Mounting type: Chassis Mount
- Current supply: 15 mA
- Voltage supply: 4.75V ~ 5.25V
- Response time: 70ns
- Operating temperature: -40°C ~ 70°C
- Package type: Module, Wire Leads
All substitute parts listed maintain these core electrical and mechanical specifications, ensuring functional compatibility in applications designed for the OPB992T51. Differences in product status (Active vs. Obsolete) and RoHS compliance reflect manufacturing updates rather than functional changes.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Sensing Distance | Output Configuration | Current - Supply (mA) | Voltage - Supply | Response Time | Operating Temperature | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| OPB992T51 | TT Electronics/Optek Technology | Obsolete | 0.125" (3.18mm) | Totem Pole, Inverted | 15 | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | RoHS non-compliant | 671 |
| OPB991T51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | NPN - Open Collector, Buffer | 12 | 4.5V ~ 16V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 5218 |
| OPB992T51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Totem Pole, Inverted | 15 | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 2479 |
| OPB932W51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Totem Pole, Inverted | 15 | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1139 |
| OPB932W55Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Totem Pole, Inverted | 15 | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 866 |
| OPB942W55Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Totem Pole, Inverted | 15 | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1455 |
| OPB982P11Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Totem Pole, Inverted | 15 | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 837 |
| OPB982P51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Totem Pole, Inverted | 15 | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1937 |
| OPB982T51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Totem Pole, Inverted | 15 | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1842 |
| OPB982T55Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Totem Pole, Inverted | 15 | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 830 |
| OPB992L51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Totem Pole, Inverted | 15 | 4.75V ~ 5.25V | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1224 |
Engineering Selection Recommendations
Direct Equivalent (Highest Compatibility): OPB992T51Z is the direct active equivalent of OPB992T51, maintaining identical electrical specifications and output configuration. This part is ROHS3 compliant and carries active product status with substantial inventory availability (2479 units).
Alternative Substitutes (Functionally Compatible): OPB932W51Z, OPB932W55Z, OPB942W55Z, OPB982P11Z, OPB982P51Z, OPB982T51Z, OPB982T55Z, and OPB992L51Z all meet the core electrical and mechanical requirements. These parts are manufactured by the same supplier, maintain identical sensing distance, output configuration, current draw, voltage supply range, response time, and operating temperature specifications. All substitute parts carry ROHS3 compliance and active product status.
Output Configuration Consideration: OPB991T51Z differs in output configuration (NPN - Open Collector, Buffer vs. Totem Pole, Inverted) and voltage supply range (4.5V ~ 16V vs. 4.75V ~ 5.25V). This part is suitable only for applications where the different output stage and expanded voltage tolerance are compatible with circuit design requirements.
Frequently Asked Questions (FAQ)
Q: Can OPB992T51Z be used as a direct replacement for OPB992T51? A: Yes. OPB992T51Z maintains identical electrical specifications including 15 mA supply current, 4.75V ~ 5.25V voltage range, 70ns response time, and Totem Pole inverted output configuration. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant).
Q: What is the difference between OPB992T51Z and OPB982T51Z? A: Both parts share identical electrical and mechanical specifications. The difference lies in the base product number designation (OPB992 vs. OPB982), which reflects internal manufacturing or product line categorization by TT Electronics/Optek Technology. Functionally, they are interchangeable.
Q: Is OPB991T51Z compatible with OPB992T51? A: OPB991T51Z differs in two critical parameters: output configuration (NPN - Open Collector, Buffer vs. Totem Pole, Inverted) and voltage supply range (4.5V ~ 16V vs. 4.75V ~ 5.25V). Compatibility depends on circuit design requirements. If the application requires Totem Pole inverted output and strict 4.75V ~ 5.25V supply voltage, OPB991T51Z is not suitable.
Q: Are all substitute parts RoHS compliant? A: All substitute parts listed (OPB992T51Z, OPB932W51Z, OPB932W55Z, OPB942W55Z, OPB982P11Z, OPB982P51Z, OPB982T51Z, OPB982T55Z, OPB992L51Z) are ROHS3 compliant. The original OPB992T51 is RoHS non-compliant.
Q: Do all substitute parts use the same wire lead package? A: Yes. All substitute parts use Module, Wire Leads packaging with Chassis Mount configuration, maintaining mechanical compatibility with OPB992T51 installations.
Q: What is the inventory status for substitute parts? A: OPB991T51Z has the highest inventory (5218 units). OPB982P51Z (1937 units), OPB982T51Z (1842 units), OPB992L51Z (1224 units), OPB942W55Z (1455 units), OPB932W51Z (1139 units), OPB982T55Z (830 units), and OPB932W55Z (866 units) are all available in substantial quantities.
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