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OPB993L55 Equivalent & Substitute Parts
Part Overview
The OPB993L55 is an optical sensor from TT Electronics/Optek Technology's Photologic® series, designed as a through-beam sensor with 0.125" (3.18mm) sensing distance and NPN open collector output configuration. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The OPB993L55 operates within a 4.75V to 5.25V supply range with 15 mA current consumption and 70ns response time, suitable for industrial sensing applications requiring wire lead connectivity and chassis mounting.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | OPB993L55 |
| Manufacturer | TT Electronics/Optek Technology |
| Category | Optical Sensors |
| Series | Photologic® |
| Sensing Distance | 0.125" (3.18mm) |
| Sensing Method | Through-Beam |
| Output Configuration | NPN - Open Collector, Inverted |
| Mounting Type | Chassis Mount |
| Voltage - Supply | 4.75V ~ 5.25V |
| Current - Supply | 15 mA |
| Response Time | 70ns |
| Operating Temperature | -40°C ~ 70°C |
| Package / Case | Module, Wire Leads |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
Substitute Part Grouping Explanation
Substitution for the OPB993L55 is determined by strict equivalence across the following critical parameters:
- Sensing Distance: 0.125" (3.18mm)
- Sensing Method: Through-Beam
- Output Configuration: NPN - Open Collector, Inverted
- Mounting Type: Chassis Mount
- Voltage Supply Range: 4.75V ~ 5.25V
- Current Supply: 15 mA
- Response Time: 70ns
- Operating Temperature Range: -40°C ~ 70°C
- Package Type: Module, Wire Leads
All substitute parts listed maintain identical electrical and mechanical specifications across these parameters. The primary distinction between the OPB993L55 and its substitutes is product status and RoHS compliance. The OPB993L55 is obsolete and RoHS non-compliant, while active substitutes are ROHS3 compliant, making them suitable for new designs and systems requiring regulatory compliance.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Sensing Distance | Sensing Method | Output Configuration | Voltage Supply | Current Supply | Response Time | Operating Temperature | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| OPB993L55 | TT Electronics/Optek Technology | Obsolete | 0.125" (3.18mm) | Through-Beam | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | RoHS non-compliant | 742 |
| OPB993L55Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 722 |
| OPB933W51Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | 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) | Through-Beam | 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) | Through-Beam | 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) | Through-Beam | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 896 |
| OPB983L51Z | TT Electronics / Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1900 |
| OPB983P11Z | TT Electronics/Optek Technology | Active | 0.125" (3.18mm) | Through-Beam | 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) | Through-Beam | 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) | Through-Beam | 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) | Through-Beam | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1716 |
Engineering Selection Recommendations
For applications currently using the OPB993L55, direct substitution with OPB993L55Z is the primary recommendation. This part maintains identical electrical and mechanical specifications while transitioning from obsolete status to active production with ROHS3 compliance.
For new designs or systems requiring regulatory compliance, any of the listed substitute parts are functionally equivalent. Selection among OPB933W51Z, OPB933W55Z, OPB943W51Z, OPB983L11Z, OPB983L51Z, OPB983P11Z, OPB983P51Z, OPB983T51Z, and OPB993L11Z should be based on inventory availability and supply chain considerations, as all maintain identical performance specifications.
The OPB983T51Z offers the highest inventory level at 20,199 pieces, providing supply chain stability for high-volume applications. All substitute parts are ROHS3 compliant, meeting modern regulatory requirements for electronic component procurement.
Frequently Asked Questions (FAQ)
Q: Can OPB993L55 be directly replaced with OPB993L55Z?
A: Yes. OPB993L55Z is the direct equivalent with identical electrical and mechanical specifications. The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).
Q: Are all listed substitute parts electrically interchangeable?
A: Yes. All substitute parts maintain identical sensing distance (0.125"), sensing method (through-beam), output configuration (NPN open collector inverted), voltage supply (4.75V ~ 5.25V), current consumption (15 mA), response time (70ns), and operating temperature range (-40°C ~ 70°C).
Q: What is the difference between OPB993, OPB933, OPB983, and OPB943 base product numbers?
A: The base product numbers represent different product lines within the Photologic® series. All listed variants maintain identical electrical and mechanical parameters specified for the OPB993L55, making them functionally equivalent for through-beam optical sensing applications.
Q: Does RoHS compliance affect performance or functionality?
A: No. RoHS compliance relates to material composition and environmental standards, not electrical performance. All ROHS3 compliant substitutes deliver identical functional performance to the OPB993L55.
Q: Which substitute part should be selected for new designs?
A: Any of the listed active, ROHS3 compliant parts are suitable. Selection should prioritize inventory availability and supply chain reliability. OPB983T51Z offers the highest inventory level for high-volume applications.
Q: Are there any package or mounting differences between substitutes?
A: No. All substitute parts use identical packaging (Module, Wire Leads) and mounting type (Chassis Mount), ensuring mechanical compatibility with existing designs.
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