OPB890N55 Equivalent & Substitute Parts

Part Overview

The OPB890N55 is an optical sensor through-beam phototransistor module with pre-wired configuration, manufactured by TT Electronics/Optek Technology. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs. The sensor operates with a 0.125" (3.18mm) sensing distance and is designed for free-hanging mounting applications. Substitute parts maintain identical electrical and mechanical specifications while offering improved product status and compliance certifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	OPB890N55
Manufacturer	TT Electronics/Optek Technology
Category	Optical Sensors
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	-40°C ~ 85°C
Mounting Type	Free Hanging
Package / Case	Module, Pre-Wired
Type	Unamplified
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the OPB890N55 are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

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: -40°C ~ 85°C
Type: Unamplified

Substitution Categories:

MFR Recommended Substitute (Mounting Type Variation): OPB890T55Z differs only in mounting configuration (Chassis Mount / PCB Mount) while maintaining all electrical specifications and offering active product status with RoHS3 compliance.

Parametric Equivalents (Package Variation): OPB880N11Z and OPB880N55Z maintain identical electrical parameters and free-hanging mounting type. Both are active products with RoHS3 compliance. These represent direct functional equivalents with improved product lifecycle status.

Parameter Comparison

Parameter	OPB890N55	OPB890T55Z	OPB880N11Z	OPB880N55Z
Manufacturer	TT Electronics/Optek Technology	TT Electronics/Optek Technology	TT Electronics/Optek Technology	TT Electronics/Optek Technology
Sensing Distance	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
Output Configuration	Phototransistor	Phototransistor	Phototransistor	Phototransistor
Current - DC Forward (If) (Max)	50 mA	50 mA	50 mA	50 mA
Current - Collector (Ic) (Max)	30 mA	30 mA	30 mA	30 mA
Voltage - Collector Emitter Breakdown (Max)	30 V	30 V	30 V	30 V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Type	Unamplified	Unamplified	Unamplified	Unamplified
Mounting Type	Free Hanging	Chassis Mount	Free Hanging	Free Hanging
Package / Case	Module, Pre-Wired	PCB Mount	Module, Pre-Wired	Module, Pre-Wired
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS3 Compliant	RoHS3 Compliant	RoHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Free-Hanging Mount Applications: OPB880N11Z and OPB880N55Z are direct substitutes for the OPB890N55. Both maintain the free-hanging mounting configuration and module pre-wired package. Selection between these two parametric equivalents depends on specific application requirements not differentiated by the provided electrical specifications. Both offer active product status and RoHS3 compliance, providing improved lifecycle support compared to the obsolete OPB890N55.

For PCB Mount Applications: OPB890T55Z serves as the MFR recommended substitute when chassis mount or PCB mount configuration is required. This part maintains all electrical specifications while offering active product status and RoHS3 compliance. The mounting type difference requires mechanical redesign consideration in the application.

Compliance Considerations: All substitute parts (OPB890T55Z, OPB880N11Z, OPB880N55Z) are RoHS3 compliant, addressing regulatory requirements that the obsolete OPB890N55 does not meet. All substitute parts maintain REACH unaffected status and EAR99 ECCN classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can OPB890T55Z replace OPB890N55 in existing designs? A: OPB890T55Z maintains all electrical specifications but differs in mounting type (Chassis Mount/PCB Mount versus Free Hanging). Direct mechanical substitution requires design modification. Electrical functionality remains equivalent.

Q: What is the difference between OPB880N11Z and OPB880N55Z? A: Both parts are parametric equivalents with identical electrical specifications and free-hanging mounting. The provided data does not specify functional differences between these variants. Selection should be based on application-specific requirements and availability.

Q: Why is the OPB890N55 listed as obsolete? A: Product status reflects manufacturer lifecycle classification. Substitute parts with active status provide ongoing support, availability, and compliance certifications.

Q: Are all substitute parts RoHS compliant? A: Yes. OPB890T55Z, OPB880N11Z, and OPB880N55Z are all RoHS3 compliant, whereas the original OPB890N55 is RoHS non-compliant.

Q: Can I use OPB880N55Z in applications originally designed for OPB890N55? A: Yes, provided the free-hanging mounting type is compatible with your mechanical design. All electrical parameters, sensing distance, and operating temperature range are identical.

Q: What inventory levels are available for substitute parts? A: OPB890T55Z: 1452 pcs; OPB880N11Z: 1329 pcs; OPB880N55Z: 945 pcs. Inventory status may change; verify current availability with your supplier.

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