OVSAWBCR4 Equivalent & Substitute Parts

Part Overview

The OVSAWBCR4 is a white LED indication component in 4-PLCC surface mount packaging manufactured by TT Electronics / Optek Technology. This part is classified as obsolete, making substitute components necessary for ongoing production and maintenance applications. The OVSAWBCR4 delivers 2850mcd brightness with a 120° viewing angle and operates at a forward voltage of 3.4V with a 30mA test current. Due to its discontinued status, identifying compatible alternatives ensures design continuity and supply chain reliability.

Key Parameters

Parameter	Value
Color	White
Package / Case	4-PLCC
Mounting Type	Surface Mount
Voltage - Forward (Vf) (Typ)	3.4V
Current - Test	30mA
Millicandela Rating	2850mcd
Viewing Angle	120°
Lens Style	Round with Flat Top
Size / Dimension	3.20mm L x 2.80mm W
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the OVSAWBCR4 is determined by strict alignment of the following parameters:

Package compatibility: Both parts must use 4-PLCC surface mount packaging with identical footprint dimensions (3.20mm L x 2.80mm W)
Electrical performance: Forward voltage and test current must support circuit operation within design tolerances
Optical characteristics: Brightness (millicandela rating) and viewing angle must meet or exceed application requirements
Regulatory compliance: RoHS3 compliance ensures environmental and safety standards are maintained
Physical dimensions: Height and overall form factor must fit within PCB assembly constraints

The LTW-E670DS from Lite-On Inc. qualifies as a substitute based on matching package geometry, compatible electrical parameters, equivalent optical performance, and active product status with superior inventory availability.

Parameter Comparison

Parameter	OVSAWBCR4 (TT Electronics)	LTW-E670DS (Lite-On)	Compatibility Notes
Color	White	White	Identical
Package / Case	4-PLCC	4-PLCC	Direct footprint match
Mounting Type	Surface Mount	Surface Mount	Identical
Voltage - Forward (Vf) (Typ)	3.4V	3V	0.4V lower; verify circuit tolerance
Current - Test	30mA	30mA	Identical
Millicandela Rating	2850mcd	2900mcd	Equivalent brightness
Viewing Angle	120°	120°	Identical
Lens Style	Round with Flat Top	Round with Flat Top	Identical
Size / Dimension	3.20mm L x 2.80mm W	3.20mm L x 2.80mm W	Direct match
Height (Max)	1.95mm	1.90mm	0.05mm lower; no clearance impact
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical compliance
Product Status	Obsolete	Active	Substitute is in active production

Engineering Selection Recommendations

The LTW-E670DS is the qualified substitute for the obsolete OVSAWBCR4 based on the following engineering criteria:

Package and Mechanical Compatibility: Both components share identical 4-PLCC surface mount packaging with matching footprint dimensions (3.20mm L x 2.80mm W) and compatible height profiles. PCB layout and assembly processes require no modification.

Electrical Compatibility: The LTW-E670DS operates at 3V forward voltage compared to the OVSAWBCR4's 3.4V. This 0.4V difference is within typical circuit design tolerances for LED indication applications. Both components operate at 30mA test current, ensuring consistent power consumption.

Optical Performance: The LTW-E670DS delivers 2900mcd brightness, matching the OVSAWBCR4's 2850mcd specification. Both maintain a 120° viewing angle with identical round flat-top lens geometry, ensuring equivalent visual performance in indication applications.

Regulatory and Compliance Status: Both components are ROHS3 compliant and carry identical REACH and ECCN classifications (EAR99). The LTW-E670DS maintains active product status with 15,222 units in stock, providing superior supply chain continuity compared to the obsolete OVSAWBCR4.

Frequently Asked Questions (FAQ)

Q: Can the LTW-E670DS directly replace the OVSAWBCR4 without PCB modifications?

A: Yes. Both components use identical 4-PLCC surface mount packaging with matching footprint dimensions and compatible height profiles. No PCB layout changes are required.

Q: What is the significance of the 0.4V forward voltage difference between these parts?

A: The LTW-E670DS operates at 3V versus the OVSAWBCR4's 3.4V. This difference is typical in LED component variations and falls within standard circuit design tolerances for indication applications. Verify that your circuit design accommodates this voltage range.

Q: Are the brightness levels equivalent between these two components?

A: Yes. The LTW-E670DS delivers 2900mcd compared to the OVSAWBCR4's 2850mcd. This represents equivalent optical performance for indication purposes, with the substitute providing slightly higher brightness.

Q: Do both components meet the same regulatory requirements?

A: Yes. Both the OVSAWBCR4 and LTW-E670DS are ROHS3 compliant with identical REACH and ECCN classifications. No compliance documentation changes are required for substitution.

Q: Why is the LTW-E670DS recommended over other potential alternatives?

A: The LTW-E670DS matches all critical parameters: identical package geometry, compatible electrical specifications, equivalent optical performance, and active production status. The substitute is manufactured by Lite-On Inc., a qualified LED component supplier, with 15,222 units in current inventory.

Q: What is the moisture sensitivity level difference, and does it affect handling?

A: The OVSAWBCR4 has MSL 2A (4 weeks) while the LTW-E670DS has MSL 3 (168 hours). The substitute requires standard moisture control during storage and assembly but does not impose additional handling constraints beyond industry-standard practices for surface mount components.

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