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OPB983L51 Equivalent & Substitute Parts
Part Overview
The OPB983L51 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 0.125" (3.18mm) sensing distance, NPN open collector inverted output configuration, and wire lead packaging for chassis mount applications. The OPB983L51 is currently listed as obsolete product status. Equivalent and substitute parts are necessary to maintain system functionality and ensure continued availability for new designs and field replacements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Sensing Distance | 0.125" (3.18mm) |
| Sensing Method | Through-Beam |
| Output Configuration | NPN - Open Collector, 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 |
| Series | Photologic® |
Substitute Part Grouping Explanation
Substitute parts for the OPB983L51 are qualified based on electrical and mechanical parameter equivalence. All substitute parts maintain identical specifications across the following critical parameters: sensing distance (0.125" / 3.18mm), sensing method (through-beam), output configuration (NPN open collector inverted), supply current (15 mA), supply voltage range (4.75V ~ 5.25V), response time (70ns), operating temperature range (-40°C ~ 70°C), mounting type (chassis mount), and package type (module with wire leads). All substitute parts are manufactured by TT Electronics/Optek Technology within the Photologic® series. The primary distinction between the main part and substitutes is product status: the OPB983L51 is obsolete, while all qualified substitutes maintain active product status and ROHS3 compliance.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Sensing Distance | Output Configuration | Supply Voltage | Supply Current | Response Time | Operating Temperature | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| OPB983L51 | TT Electronics/Optek Technology | Obsolete | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | RoHS non-compliant | 978 |
| OPB983L51Z | TT Electronics / Optek Technology | Active | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1900 |
| OPB933W51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 3489 |
| OPB933W55Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1243 |
| OPB943W51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1180 |
| OPB983L11Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 896 |
| OPB983P11Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 998 |
| OPB983P51Z | TT Electronics / Optek Technology | Active | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 2108 |
| OPB983T51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 20199 |
| OPB993L11Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1716 |
| OPB993L55Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 722 |
Engineering Selection Recommendations
All listed substitute parts are electrically and mechanically equivalent to the OPB983L51 and are suitable for direct replacement in applications requiring through-beam optical sensing at 0.125" (3.18mm) distance with NPN open collector inverted output. The primary advantage of substitute parts is active product status combined with ROHS3 compliance, contrasting with the obsolete and RoHS non-compliant status of the original OPB983L51.
For new designs and field replacements, OPB983T51Z offers the highest inventory availability (20,199 units), ensuring supply continuity. OPB983L51Z provides the closest part number alignment to the original component while maintaining active status and ROHS3 compliance. OPB933W51Z and OPB943W51Z represent alternative base product numbers within the same series, offering equivalent electrical performance with strong inventory levels (3,489 and 1,180 units respectively).
All substitute parts maintain identical electrical specifications: 15 mA supply current, 4.75V to 5.25V supply voltage range, 70ns response time, and -40°C to 70°C operating temperature range. All parts are classified as REACH Unaffected and carry EAR99 ECCN designation.
Frequently Asked Questions (FAQ)
Q: Can OPB983L51 be directly replaced with any of the listed substitute parts?
A: Yes. All substitute parts maintain identical electrical and mechanical specifications including sensing distance, output configuration, supply voltage, supply current, response time, and operating temperature range. Direct substitution is supported without circuit modification.
Q: What is the difference between OPB983L51 and OPB983L51Z?
A: Both parts are electrically and mechanically identical. The primary differences are product status (OPB983L51 is obsolete; OPB983L51Z is active) and RoHS compliance (OPB983L51 is non-compliant; OPB983L51Z is ROHS3 compliant). OPB983L51Z is the recommended direct replacement.
Q: Are there differences between OPB983, OPB933, OPB943, and OPB993 base product numbers?
A: All substitute parts listed maintain identical electrical and mechanical parameters as specified in this reference. Differences in base product numbers reflect internal TT Electronics/Optek Technology product line variations that do not affect functional equivalence for the specified application parameters.
Q: What packaging differences exist among the substitute parts?
A: All substitute parts use identical packaging: module with wire leads for chassis mount applications. The "Z" suffix indicates bulk packaging format across all active substitute parts.
Q: Which substitute part offers the best inventory availability?
A: OPB983T51Z maintains the highest inventory level at 20,199 units, followed by OPB933W51Z at 3,489 units and OPB983P51Z at 2,108 units.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts carry ROHS3 compliance status. The original OPB983L51 is RoHS non-compliant, making the substitute parts suitable for applications requiring RoHS compliance.
Q: Do substitute parts maintain the same response time as the original OPB983L51?
A: Yes. All substitute parts maintain 70ns response time, identical to the original part.
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