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OPB983T55 Equivalent & Substitute Parts
Part Overview
The OPB983T55 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, which necessitates identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for direct circuit substitution.
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 |
Substitute Part Grouping Explanation
Substitution of the OPB983T55 is based on strict equivalence across the following critical parameters: sensing distance (0.125"), sensing method (through-beam), output configuration (NPN open collector inverted), supply voltage range (4.75V–5.25V), current consumption (15 mA), response time (70ns), operating temperature range (-40°C to 70°C), mounting type (chassis mount), and package format (module with wire leads).
All identified substitute parts maintain these specifications without deviation. Substitutes are differentiated by product status (active vs. obsolete) and RoHS compliance level. The OPB983T55Z represents the direct packaging variant of the base OPB983 series. Additional substitutes from the OPB933, OPB943, and OPB993 base product families are functionally equivalent within the Photologic® optical sensor line.
Parameter Comparison
| Part Number | Manufacturer | Product Status | Sensing Distance | Output Configuration | Voltage Supply | Current Supply | Response Time | Operating Temperature | RoHS Status | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|
| OPB983T55 | 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 | 995 |
| OPB983T55Z | 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 | 1009 |
| 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 |
Engineering Selection Recommendations
The OPB983T55 is obsolete and should be replaced with an active equivalent. OPB983T55Z is the direct successor, maintaining identical electrical and mechanical specifications while achieving ROHS3 compliance. This part offers the highest inventory availability (1009 units) among direct OPB983 variants and is the primary recommendation for direct substitution.
OPB983T51Z provides the largest inventory stock (20199 units) within the OPB983 base product family and maintains full electrical and mechanical compatibility. This part is suitable for high-volume applications requiring extended supply assurance.
OPB983P51Z and OPB983L51Z are alternative OPB983 variants with active status and ROHS3 compliance, each with substantial inventory levels (2108 and 1900 units respectively).
OPB933W51Z, OPB933W55Z, OPB943W51Z, and OPB993L11Z represent functionally equivalent alternatives from different base product families within the Photologic® series. All maintain identical electrical specifications and operating parameters. OPB933W51Z offers the highest inventory availability (3489 units) among cross-family alternatives.
All substitute parts are REACH unaffected and classified under ECCN EAR99 with HTSUS code 8541.49.8000, matching the original part's regulatory classification.
Frequently Asked Questions (FAQ)
Q: Can OPB983T55Z be used as a direct replacement for OPB983T55?
A: Yes. OPB983T55Z is the active equivalent of the obsolete OPB983T55, with identical electrical specifications (4.75V–5.25V supply, 15 mA current, 70ns response time), sensing distance (0.125"), output configuration (NPN open collector inverted), operating temperature range (-40°C to 70°C), and package format (module with wire leads). The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).
Q: Are OPB933, OPB943, and OPB993 base product families interchangeable with OPB983?
A: Yes, within the constraints of this product category. All identified substitutes from OPB933, OPB943, and OPB993 families maintain identical electrical and mechanical parameters as specified: 0.125" sensing distance, through-beam sensing method, NPN open collector inverted output, 4.75V–5.25V supply voltage, 15 mA current consumption, 70ns response time, -40°C to 70°C operating temperature, chassis mount configuration, and module with wire leads packaging.
Q: What is the difference between OPB983T55Z and OPB983T51Z?
A: Both parts are active OPB983 variants with ROHS3 compliance and identical electrical specifications. The difference lies in inventory availability: OPB983T51Z has significantly higher stock (20199 units) compared to OPB983T55Z (1009 units). Both are suitable for direct substitution of the obsolete OPB983T55.
Q: Are all substitute parts RoHS compliant?
A: All identified substitute parts are ROHS3 compliant. The original OPB983T55 is RoHS non-compliant. Substitution with any listed active part upgrades the assembly to current RoHS compliance standards.
Q: Do substitute parts require circuit modifications?
A: No. All substitute parts maintain identical electrical specifications (supply voltage, current consumption, response time, output configuration) and mechanical specifications (sensing distance, mounting type, package format). Direct circuit substitution is supported without modification.
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