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OPB993N51Z Equivalent & Substitute Parts
Part Overview
The OPB993N51Z is an optical sensor manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This through-beam optical sensor operates at 0.125" (3.18mm) sensing distance with NPN open collector inverted output configuration. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Active alternatives within the same product family maintain identical electrical and mechanical specifications while offering current availability.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Sensing Distance | 0.125" (3.18mm) |
| Sensing Method | Through-Beam |
| Output Configuration | NPN - Open Collector, Inverted |
| Voltage Supply | 4.75V ~ 5.25V |
| Current Supply | 15 mA |
| Response Time | 70ns |
| Operating Temperature | -40°C ~ 70°C |
| Mounting Type | Chassis Mount |
| Package / Case | Module, Wire Leads |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility is determined by strict equivalence across the following parameters: sensing distance (0.125"), sensing method (through-beam), output configuration (NPN open collector inverted), supply voltage range (4.75V ~ 5.25V), current draw (15 mA), response time (70ns), operating temperature range (-40°C ~ 70°C), mounting type (chassis mount), and package format (module with wire leads). All substitute parts listed maintain these specifications without deviation. Substitutes are grouped by base product number (OPB933, OPB943, OPB983, OPB993) with variant suffixes indicating packaging and lead configuration options. Product status transition from obsolete (OPB993N51Z) to active alternatives ensures design continuity and supply chain reliability.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Sensing Distance | Output Configuration | Voltage Supply | Current Supply | Response Time | Operating Temperature | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| OPB993N51Z | TT Electronics/Optek Technology | Obsolete | 0.125" (3.18mm) | NPN - Open Collector, Inverted | 4.75V ~ 5.25V | 15 mA | 70ns | -40°C ~ 70°C | ROHS3 Compliant | 1112 |
| 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 |
| 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 |
| 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 maintain full electrical and mechanical compatibility with OPB993N51Z. Selection should prioritize active product status parts to ensure long-term supply availability. OPB983T51Z offers the highest inventory level (20,199 units), providing supply chain stability for high-volume applications. OPB933W51Z and OPB983P51Z provide strong inventory positions (3,489 and 2,108 units respectively) with active product status. All substitutes carry ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Variant suffixes (W, L, P, T) and numerical codes (11, 51, 55) indicate packaging and lead configuration options; electrical performance remains constant across all variants listed.
Frequently Asked Questions (FAQ)
Q: Can OPB993N51Z be directly replaced with any of the listed substitutes? A: Yes. All listed parts maintain identical electrical specifications (4.75V ~ 5.25V supply, 15 mA current, 70ns response time, NPN open collector inverted output), mechanical mounting (chassis mount), and package format (module with wire leads). Direct
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