OPB982L51Z Equivalent & Substitute Parts

Part Overview

The OPB982L51Z is a through-beam optical sensor module manufactured by TT Electronics/Optek Technology, part of the Photologic® series. This 0.125" (3.18mm) sensing distance module features wire leads and totem pole inverted output configuration. The part is currently obsolete, making equivalent substitute parts necessary for ongoing system support and new designs requiring compatible optical sensing functionality.

Key Parameters

Parameter	Value
Sensing Distance	0.125" (3.18mm)
Sensing Method	Through-Beam
Output Configuration	Totem Pole, 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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the OPB982L51Z is determined by strict equivalence across the following critical parameters:

Sensing distance: 0.125" (3.18mm)
Sensing method: Through-Beam
Output configuration: Totem Pole, Inverted
Voltage supply range: 4.75V ~ 5.25V
Current supply: 15 mA
Response time: 70ns
Operating temperature range: -40°C ~ 70°C
Mounting type: Chassis Mount
Package type: Module, Wire Leads
Regulatory compliance: ROHS3 Compliant, REACH Unaffected

All substitute parts listed maintain identical electrical and mechanical specifications. The primary distinction between substitute options is product status (active vs. obsolete) and inventory availability. Packaging designation (Bulk vs. other formats) does not affect functional compatibility.

Parameter Comparison

Part Number	Manufacturer	Product Status	Sensing Distance	Output Configuration	Voltage Supply	Current Supply	Response Time	Operating Temperature	RoHS Status	Inventory (Pcs)
OPB982L51Z	TT Electronics/Optek Technology	Obsolete	0.125" (3.18mm)	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	850
OPB932W51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1139
OPB932W55Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	866
OPB942W55Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1455
OPB982P11Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	837
OPB982P51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1937
OPB982T51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1842
OPB982T55Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	830
OPB992L51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	1224
OPB992N55Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	20299
OPB992P51Z	TT Electronics/Optek Technology	Active	0.125" (3.18mm)	Totem Pole, Inverted	4.75V ~ 5.25V	15 mA	70ns	-40°C ~ 70°C	ROHS3 Compliant	69800

Engineering Selection Recommendations

All listed substitute parts are functionally equivalent to the OPB982L51Z and maintain full compliance with ROHS3 and REACH requirements. Selection among active alternatives should prioritize parts with active product status to ensure long-term availability and manufacturing support.

OPB992P51Z and OPB992N55Z offer the highest inventory levels (69,800 and 20,299 units respectively), providing supply chain stability for high-volume applications. OPB982P51Z and OPB982T51Z provide intermediate inventory availability (1,937 and 1,842 units) with established active status. OPB932W51Z, OPB932W55Z, OPB942W55Z, OPB982P11Z, OPB982T55Z, and OPB992L51Z are all active alternatives with adequate stock levels ranging from 830 to 1,455 units.

Frequently Asked Questions (FAQ)

Q: Can OPB982L51Z be directly replaced with any of the listed substitute parts?

A: Yes. All listed substitute parts maintain identical electrical specifications (4.75V ~ 5.25V supply, 15 mA current, 70ns response time), mechanical configuration (0.125" sensing distance, through-beam method, totem pole inverted output), and operating parameters (-40°C ~ 70°C temperature range). Direct pin-for-pin and functional replacement is supported.

Q: What is the difference between OPB982L51Z and OPB982P51Z?

A: Both parts are from the OPB982 base product family with identical electrical and mechanical specifications. The primary difference is product status: OPB982L51Z is obsolete, while OPB982P51Z is active with higher inventory availability (1,937 units vs. 850 units).

Q: Are there inventory or supply considerations when selecting a substitute?

A: Yes. OPB992P51Z offers the largest inventory (69,800 units), followed by OPB992N55Z (20,299 units). These options provide superior supply chain continuity. All active alternatives maintain adequate stock for standard procurement cycles.

Q: Do packaging differences affect compatibility?

A: No. All parts use identical Module, Wire Leads packaging and Chassis Mount configuration. Packaging designation (Bulk) indicates distribution format only and does not affect electrical or mechanical compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 Compliant status and REACH Unaffected classification, matching the regulatory compliance profile of the OPB982L51Z.

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