OPB493L11Z Equivalent & Substitute Parts

Part Overview

The OPB493L11Z is an optical sensor manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This through-beam optical sensor features a 0.125" (3.18mm) sensing distance with NPN open collector inverted output configuration and chassis mount wire leads. The product is currently obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations where this sensor type is required.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB493L11Z
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
Current - Supply	7.5 mA
Voltage - Supply	4.5V ~ 16V
Response Time	50ns
Operating Temperature	-40°C ~ 85°C
Package / Case	Module, Wire Leads
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the OPB493L11Z 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
Current - Supply: 7.5 mA
Voltage - Supply: 4.5V ~ 16V
Response Time: 50ns
Operating Temperature: -40°C ~ 85°C
Series: Photologic®

All substitute parts listed maintain identical electrical specifications and environmental operating ranges. Differences exist only in mounting configuration (chassis mount wire leads versus PCB mount through-hole) and product status (active versus obsolete). Mounting type selection depends on circuit board integration requirements and mechanical constraints of the target application.

Parameter Comparison

Parameter	OPB493L11Z (Main)	OPB463T11	OPB483L11Z	OPB483P11Z	OPB493T11Z
Sensing Distance	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
Output Configuration	NPN - Open Collector, Inverted	NPN - Open Collector, Inverted	NPN - Open Collector, Inverted	NPN - Open Collector, Inverted	NPN - Open Collector, Inverted
Mounting Type	Chassis Mount	Through Hole	Chassis Mount	Chassis Mount	Chassis Mount
Current - Supply	7.5 mA	7.5 mA	7.5 mA	7.5 mA	7.5 mA
Voltage - Supply	4.5V ~ 16V	4.5V ~ 16V	4.5V ~ 16V	4.5V ~ 16V	4.5V ~ 16V
Response Time	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
Package / Case	Module, Wire Leads	PCB Mount	Module, Wire Leads	Module, Wire Leads	Module, Wire Leads
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active

Engineering Selection Recommendations

For applications currently using the obsolete OPB493L11Z, direct electrical substitution is available through active product alternatives. The OPB483L11Z and OPB483P11Z maintain identical chassis mount wire lead configurations and are recommended for direct mechanical and electrical replacement without circuit modification.

The OPB493T11Z provides electrical equivalence with chassis mount configuration and active product status, suitable for applications where the original mounting interface is compatible.

The OPB463T11 offers electrical equivalence with through-hole PCB mount configuration. This option requires circuit board redesign to accommodate the different mounting interface but provides active product availability and PCB-integrated mounting advantages.

All substitute parts carry ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the original component.

Frequently Asked Questions (FAQ)

Q: Can OPB463T11 directly replace OPB493L11Z without circuit modification?

A: No. The OPB463T11 uses through-hole PCB mount configuration while the OPB493L11Z uses chassis mount wire leads. Circuit board redesign is required to accommodate the different mounting interface. Electrical specifications are identical.

Q: What is the primary difference between OPB483L11Z and OPB483P11Z?

A: Both parts are electrically and mechanically identical. The difference lies in packaging designation (L versus P suffix). Both maintain chassis mount wire lead configuration and are suitable for direct replacement of OPB493L11Z.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts (OPB463T11, OPB483L11Z, OPB483P11Z, OPB493T11Z) are ROHS3 compliant and REACH unaffected, matching the regulatory compliance of the original OPB493L11Z.

Q: Which substitute part should be selected for new designs?

A: For new designs requiring chassis mount wire lead configuration, OPB483L11Z or OPB483P11Z are recommended due to active product status. For PCB-integrated designs, OPB463T11 is suitable with appropriate circuit board layout modifications.

Q: Do all substitute parts operate at the same voltage and current specifications?

A: Yes. All substitute parts operate at 4.5V to 16V supply voltage with 7.5 mA supply current, identical to the original OPB493L11Z.

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