OPB490P11 Equivalent & Substitute Parts

Part Overview

The OPB490P11 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 wire lead module packaging. This part is classified as obsolete, though 755 units remain in stock as new original inventory. The OPB490P11 operates with pull-up resistor and buffer output configuration, making it suitable for chassis mount applications requiring through-beam optical detection.

Due to the obsolete product status, equivalent and substitute parts from the active Photologic® product line are available. These alternatives maintain the core electrical and sensing characteristics while offering different packaging and mounting configurations or improved compliance certifications.

Key Parameters

Parameter	OPB490P11
Sensing Distance	0.125" (3.18mm)
Sensing Method	Through-Beam
Output Configuration	Pull-Up Resistor, Buffer
Supply Voltage	4.5V ~ 16V
Supply Current	7.5 mA
Response Time	50ns
Operating Temperature	-40°C ~ 85°C
Mounting Type	Chassis Mount
Package / Case	Module, Wire Leads
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the OPB490P11 is determined by the following critical parameters:

Electrical Compatibility Parameters:

Sensing distance: 0.125" (3.18mm)
Sensing method: Through-beam
Output configuration: Pull-up resistor, buffer
Supply voltage range: 4.5V ~ 16V
Supply current: 7.5 mA
Response time: 50ns
Operating temperature range: -40°C ~ 85°C

Mechanical Compatibility Parameters:

Sensing distance tolerance and optical path alignment
Output signal characteristics and impedance

Substitute parts are grouped into two categories based on mounting configuration:

Category 1: Wire Lead Module (Chassis Mount)

OPB490P11Z (direct equivalent, active status, RoHS3 compliant)
OPB490T11Z (active status, RoHS3 compliant)
OPB480L11Z (active status, RoHS3 compliant)
OPB480T11Z (active status, RoHS3 compliant)

Category 2: PCB Mount (Through Hole)

OPB460N11 (active status, RoHS3 compliant)
OPB470N11 (active status, RoHS3 compliant)

All substitute parts maintain identical electrical specifications and sensing characteristics. Differences exist only in mechanical packaging and mounting approach.

Parameter Comparison

Parameter	OPB490P11	OPB490P11Z	OPB490T11Z	OPB480L11Z	OPB480T11Z	OPB460N11	OPB470N11
Sensing Distance	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)	0.125" (3.18mm)
Sensing Method	Through-Beam	Through-Beam	Through-Beam	Through-Beam	Through-Beam	Through-Beam	Through-Beam
Output Configuration	Pull-Up Resistor, Buffer	Pull-Up Resistor, Buffer	Pull-Up Resistor, Buffer	Pull-Up Resistor, Buffer	Pull-Up Resistor, Buffer	Pull-Up Resistor, Buffer	Pull-Up Resistor, Buffer
Supply Voltage	4.5V ~ 16V	4.5V ~ 16V	4.5V ~ 16V	4.5V ~ 16V	4.5V ~ 16V	4.5V ~ 16V	4.5V ~ 16V
Supply Current	7.5 mA	7.5 mA	7.5 mA	7.5 mA	7.5 mA	7.5 mA	7.5 mA
Response Time	50ns	50ns	50ns	50ns	50ns	50ns	50ns
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Chassis Mount	Through Hole	Through Hole
Package / Case	Module, Wire Leads	Module, Wire Leads	Module, Wire Leads	Module, Wire Leads	Module, Wire Leads	PCB Mount	PCB Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant

Engineering Selection Recommendations

For Chassis Mount Applications (Wire Lead Module):

OPB490P11Z is the direct functional equivalent with identical mechanical packaging. This part is active, RoHS3 compliant, and maintains all electrical and sensing specifications of the obsolete OPB490P11. Selection of OPB490P11Z is appropriate for direct replacement in existing chassis mount designs.

OPB490T11Z and OPB480T11Z are alternative wire lead module options within the same Photologic® series. Both are active and RoHS3 compliant. OPB480L11Z provides an additional active alternative with RoHS3 compliance.

For PCB Mount Applications (Through Hole):

OPB460N11 and OPB470N11 are through-hole PCB mount alternatives. Both maintain identical electrical and sensing specifications while offering different mechanical integration. Both are active and RoHS3 compliant. Selection between these options depends on PCB layout requirements and mechanical mounting geometry.

Compliance Consideration:

All substitute parts carry RoHS3 compliance certification, whereas the OPB490P11 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, any of the listed substitute parts satisfy compliance obligations while maintaining functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can OPB490P11Z be used as a direct replacement for OPB490P11?

A: Yes. OPB490P11Z maintains identical electrical specifications, sensing distance, output configuration, and wire lead module packaging. The primary difference is product status (active vs. obsolete) and RoHS3 compliance certification.

Q: What is the difference between wire lead module and PCB mount options?

A: Wire lead module parts (OPB490P11Z, OPB490T11Z, OPB480L11Z, OPB480T11Z) are designed for chassis mount integration with external wiring. PCB mount parts (OPB460N11, OPB470N11) are designed for through-hole soldering directly to printed circuit boards. Electrical and sensing specifications are identical; mechanical integration differs.

Q: Are all substitute parts electrically compatible with the OPB490P11?

A: Yes. All listed substitute parts operate at 4.5V ~ 16V supply voltage, draw 7.5 mA current, provide 50ns response time, and maintain -40°C ~ 85°C operating temperature range. All employ through-beam sensing with 0.125" (3.18mm) distance and pull-up resistor buffer output configuration.

Q: What does RoHS3 compliance mean for these optical sensors?

A: RoHS3 compliance indicates conformance to the Restriction of Hazardous Substances Directive. All substitute parts meet this regulatory requirement, whereas the obsolete OPB490P11 does not. For applications in regulated markets, RoHS3 compliant alternatives are required.

Q: Can I use OPB460N11 or OPB470N11 in a chassis mount application?

A: No. OPB460N11 and OPB470N11 are PCB mount through-hole components designed for circuit board integration. They are not suitable for chassis mount applications. Use wire lead module options (OPB490P11Z, OPB490T11Z, OPB480L11Z, OPB480T11Z) for chassis mounting.

Q: Are there inventory differences between substitute parts?

A: Yes. Inventory levels vary: OPB490T11Z (4186 units), OPB490P11Z (3665 units), OPB460N11 (2779 units), OPB470N11 (1910 units), OPB480T11Z (1100 units), and OPB480L11Z (1028 units). Availability should be confirmed for production requirements.

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