OPB492L11 Equivalent & Substitute Parts

Part Overview

The OPB492L11 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, making equivalent and substitute parts necessary for ongoing design support and procurement.

The OPB492L11 operates with inverted pull-up resistor output configuration, suitable for chassis mount applications requiring through-beam optical sensing in industrial and automation environments.

Key Parameters

Parameter	Value
Sensing Distance	0.125" (3.18mm)
Sensing Method	Through-Beam
Output Configuration	Pull-Up Resistor, Inverted
Mounting Type	Chassis Mount
Supply Voltage	4.5V ~ 16V
Supply Current	7.5 mA
Response Time	50ns
Operating Temperature	-40°C ~ 85°C
Package / Case	Module, Wire Leads
Series	Photologic®

Substitute Part Grouping Explanation

Substitute parts for the OPB492L11 are qualified based on electrical and mechanical parameter equivalence across the following criteria:

Electrical Parameters: Supply voltage range (4.5V ~ 16V), supply current (7.5 mA), response time (50ns), and output configuration (pull-up resistor, inverted) must remain identical.

Mechanical Parameters: Sensing distance (0.125" / 3.18mm), sensing method (through-beam), mounting type (chassis mount), and package type (module with wire leads) must be maintained.

Environmental Parameters: Operating temperature range (-40°C ~ 85°C) and moisture sensitivity level (MSL 1 - Unlimited) must be preserved.

Compliance Parameters: RoHS and REACH status are noted where applicable; however, substitution is based on functional equivalence rather than compliance status alone.

The substitute parts identified are OPB492L11Z, OPB492T11Z, and OPB482N11Z, all from TT Electronics/Optek Technology and all meeting the electrical and mechanical requirements of the original OPB492L11.

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Sensing Method	Output Configuration	Supply Voltage	Supply Current	Response Time	Operating Temperature	Package / Case	RoHS Status
OPB492L11	TT Electronics/Optek Technology	Obsolete	0.125" (3.18mm)	Through-Beam	Pull-Up Resistor, Inverted	4.5V ~ 16V	7.5 mA	50ns	-40°C ~ 85°C	Module, Wire Leads	RoHS non-compliant
OPB492L11Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Pull-Up Resistor, Inverted	4.5V ~ 16V	7.5 mA	50ns	-40°C ~ 85°C	Module, Wire Leads	ROHS3 Compliant
OPB492T11Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Through-Beam	Pull-Up Resistor, Inverted	4.5V ~ 16V	7.5 mA	50ns	-40°C ~ 85°C	Module, Wire Leads	ROHS3 Compliant
OPB482N11Z	TT Electronics/Optek Technology	Obsolete	0.125" (3.18mm)	Through-Beam	Pull-Up Resistor, Inverted	4.5V ~ 16V	7.5 mA	50ns	-40°C ~ 85°C	Module, Wire Leads	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Active Status):

OPB492L11Z and OPB492T11Z are the preferred substitutes for the obsolete OPB492L11. Both parts are currently active in production, maintain full electrical and mechanical equivalence, and are ROHS3 compliant. OPB492L11Z carries the same base product number (OPB492) as the original part, while OPB492T11Z represents an alternative variant within the same series. Both are available in bulk packaging.

Secondary Substitute (Obsolete Status):

OPB482N11Z is functionally equivalent but carries obsolete product status. This part is ROHS3 compliant and meets all electrical and mechanical specifications. However, due to its obsolete classification, long-term availability cannot be assured.

Compliance Consideration:

The original OPB492L11 is RoHS non-compliant. All active substitutes (OPB492L11Z and OPB492T11Z) are ROHS3 compliant, providing improved regulatory alignment for new designs and procurement cycles.

Frequently Asked Questions (FAQ)

Q: Can OPB492L11Z directly replace OPB492L11 in existing designs?

A: Yes. OPB492L11Z maintains identical electrical specifications (4.5V ~ 16V supply, 7.5 mA current, 50ns response time), mechanical configuration (0.125" through-beam sensing, chassis mount, wire leads), and output behavior (pull-up resistor, inverted). The primary difference is product status (active vs. obsolete) and RoHS compliance (ROHS3 vs. non-compliant).

Q: What is the difference between OPB492L11Z and OPB492T11Z?

A: Both parts are functionally equivalent with identical electrical and mechanical parameters. The difference lies in packaging designation: OPB492L11Z is supplied in bulk packaging, as is OPB492T11Z. Both are active products from the same manufacturer and series.

Q: Why is OPB482N11Z listed as a substitute if it is obsolete?

A: OPB482N11Z meets all electrical and mechanical substitution criteria and is included for reference in applications where this part may already be in inventory. However, for new procurement, active alternatives (OPB492L11Z or OPB492T11Z) are recommended due to ongoing availability.

Q: Are there any packaging differences between the substitute parts?

A: OPB492L11 and OPB482N11Z do not specify packaging type in the provided data. OPB492L11Z and OPB492T11Z are supplied in bulk packaging. All parts use module with wire leads as the case type, maintaining mechanical compatibility.

Q: What compliance certifications apply to these substitutes?

A: OPB492L11Z and OPB492T11Z are ROHS3 compliant and REACH unaffected. OPB482N11Z is ROHS3 compliant and REACH unaffected. The original OPB492L11 is RoHS non-compliant. All parts carry ECCN EAR99 classification and HTSUS code 8541.49.8000.

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