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OPB835L11 Equivalent & Substitute Parts
Part Overview
The OPB835L11 is an optical sensor manufactured by TT Electronics/Optek Technology, classified as a through-beam phototransistor optical sensor with PCB mount packaging. This component is designed for slot-type optical sensing applications requiring 0.125" (3.18mm) sensing distance. The part is currently active in production status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).
Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product category, enabling direct functional replacement in circuit designs without performance degradation.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Sensing Distance | 0.125" (3.18mm) |
| Sensing Method | Through-Beam |
| Output Configuration | Phototransistor |
| Current - DC Forward (If) (Max) | 50 mA |
| Current - Collector (Ic) (Max) | 30 mA |
| Voltage - Collector Emitter Breakdown (Max) | 30 V |
| Operating Temperature Range | -40°C ~ 85°C |
| Mounting Type | Through Hole |
| Package / Case | PCB Mount |
| Type | Unamplified |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the OPB835L11 are qualified based on strict parameter equivalence across the following critical specifications:
- Sensing Distance: 0.125" (3.18mm)
- Sensing Method: Through-Beam
- Output Configuration: Phototransistor
- Current - DC Forward (If) (Max): 50 mA
- Current - Collector (Ic) (Max): 30 mA
- Voltage - Collector Emitter Breakdown (Max): 30 V
- Operating Temperature Range: -40°C ~ 85°C
- Mounting Type: Through Hole
- Package / Case: PCB Mount
- Type: Unamplified
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
All identified substitute parts maintain identical electrical performance characteristics and environmental compliance ratings, ensuring functional interchangeability in applications designed for the OPB835L11.
Parameter Comparison
| Part Number | Manufacturer | Sensing Distance | Sensing Method | Output Configuration | If (Max) | Ic (Max) | VCE Breakdown (Max) | Operating Temperature | Mounting Type | Package | Type | RoHS Status | MSL | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OPB835L11 | TT Electronics/Optek Technology | 0.125" (3.18mm) | Through-Beam | Phototransistor | 50 mA | 30 mA | 30 V | -40°C ~ 85°C | Through Hole | PCB Mount | Unamplified | ROHS3 Compliant | 1 (Unlimited) | 822 |
| OPB360T51 | TT Electronics/Optek Technology | 0.125" (3.18mm) | Through-Beam | Phototransistor | 50 mA | 30 mA | 30 V | -40°C ~ 85°C | Through Hole | PCB Mount | Unamplified | ROHS3 Compliant | 1 (Unlimited) | 2007 |
| OPB365T55 | TT Electronics/Optek Technology | 0.125" (3.18mm) | Through-Beam | Phototransistor | 50 mA | 30 mA | 30 V | -40°C ~ 85°C | Through Hole | PCB Mount | Unamplified | ROHS3 Compliant | 1 (Unlimited) | 4496 |
| OPB370L55 | TT Electronics / Optek Technology | 0.125" (3.18mm) | Through-Beam | Phototransistor | 50 mA | 30 mA | 30 V | -40°C ~ 85°C | Through Hole | PCB Mount | Unamplified | ROHS3 Compliant | 1 (Unlimited) | 909 |
| OPB370T51 | TT Electronics/Optek Technology | 0.125" (3.18mm) | Through-Beam | Phototransistor | 50 mA | 30 mA | 30 V | -40°C ~ 85°C | Through Hole | PCB Mount | Unamplified | ROHS3 Compliant | 1 (Unlimited) | 909 |
| OPB370T55 | TT Electronics/Optek Technology | 0.125" (3.18mm) | Through-Beam | Phototransistor | 50 mA | 30 mA | 30 V | -40°C ~ 85°C | Through Hole | PCB Mount | Unamplified | ROHS3 Compliant | 1 (Unlimited) | 1112 |
| OPB380T11Z | TT Electronics/Optek Technology | 0.125" (3.18mm) | Through-Beam | Phototransistor | 50 mA | 30 mA | 30 V | -40°C ~ 85°C | Through Hole | PCB Mount | Unamplified | ROHS3 Compliant | 1 (Unlimited) | 1111 |
| OPB380T51Z | TT Electronics / Optek Technology | 0.125" (3.18mm) | Through-Beam | Phototransistor | 50 mA | 30 mA | 30 V | -40°C ~ 85°C | Through Hole | PCB Mount | Unamplified | ROHS3 Compliant | 1 (Unlimited) | 2503 |
| OPB380T55Z | TT Electronics/Optek Technology | 0.125" (3.18mm) | Through-Beam | Phototransistor | 50 mA | 30 mA | 30 V | -40°C ~ 85°C | Through Hole | PCB Mount | Unamplified | ROHS3 Compliant | 1 (Unlimited) | 1036 |
| OPB390L11Z | TT Electronics/Optek Technology | 0.125" (3.18mm) | Through-Beam | Phototransistor | 50 mA | 30 mA | 30 V | -40°C ~ 85°C | Through Hole | PCB Mount | Unamplified | ROHS3 Compliant | 1 (Unlimited) | 1137 |
| OPB390L51Z | TT Electronics/Optek Technology | 0.125" (3.18mm) | Through-Beam | Phototransistor | 50 mA | 30 mA | 30 V | -40°C ~ 85°C | Through Hole | PCB Mount | Unamplified | ROHS3 Compliant | 1 (Unlimited) | 1025 |
Engineering Selection Recommendations
All substitute parts listed maintain active product status with ROHS3 compliance and identical electrical specifications to the OPB835L11. Selection among equivalent parts should be based on inventory availability and application-specific requirements within the defined parameter set.
OPB365T55 offers the highest inventory availability at 4496 units. OPB380T51Z provides 2503 units with extended availability. OPB360T51 maintains 2007 units in stock. These alternatives support continuous supply chain flexibility for through-beam phototransistor optical sensor applications requiring 0.125" sensing distance and 30V collector-emitter breakdown voltage rating.
All parts maintain identical moisture sensitivity level (MSL 1 - Unlimited) and operating temperature range (-40°C ~ 85°C), ensuring consistent performance across environmental conditions.
Frequently Asked Questions (FAQ)
Q: What determines if a part can substitute for the OPB835L11?
A: Substitute parts must maintain identical electrical parameters including 50 mA maximum DC forward current, 30 mA maximum collector current, 30V collector-emitter breakdown voltage, and 0.125" sensing distance. All must be through-beam phototransistor sensors with PCB mount packaging, unamplified type, and ROHS3 compliance.
Q: Are all listed parts functionally equivalent to the OPB835L11?
A: Yes. All listed substitute parts meet the complete parameter specification set for the OPB835L11, including sensing method, output configuration, current ratings, voltage ratings, operating temperature range, mounting type, and compliance certifications.
Q: Does part numbering affect substitution compatibility?
A: Part numbering reflects manufacturer design variants within the OPB series. Substitution compatibility is determined exclusively by the electrical and mechanical parameters listed in this reference, not by part number designation.
Q: What is the significance of the MSL rating for these parts?
A: MSL 1 (Unlimited) indicates these components have unlimited shelf life under standard storage conditions and do not require special moisture control during handling or storage, simplifying logistics and inventory management.
Q: Can these parts be used interchangeably in existing circuit designs?
A: Yes, provided the circuit design accommodates through-hole PCB mount packaging. All substitute parts maintain identical electrical performance characteristics and environmental ratings, supporting direct functional replacement.
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