LB E6SG-S2U1-35-Z Equivalent & Substitute Parts

Part Overview

The LB E6SG-S2U1-35-Z is a blue LED indication component manufactured by ams-OSRAM USA INC., featuring a 4-PLCC surface mount package with a dominant wavelength of 469nm. This part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. The component delivers 392 millicandela at 30mA forward current with a 3.4V typical forward voltage and 120° viewing angle.

Substiute Parts

LB E6SG-S2U1-35-Z

ams-OSRAM USA INC.In Stock: 1050LB E6SG-S2U1-35-Z Datasheet

Current PartRFQ

67-21/B7C-AS2U1N/2T

Everlight Electronics Co LtdIn Stock: 77967-21/B7C-AS2U1N/2T Datasheet

Parametric EquivalentRFQ

AA3528VBS/D

KingbrightIn Stock: 4227AA3528VBS/D Datasheet

Parametric EquivalentRFQ

XZFBB45S

SunLEDIn Stock: 6660XZFBB45S Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LB E6SG-S2U1-35-Z is determined by the following critical parameters: blue color specification, dominant wavelength range (469nm ±5nm tolerance window), forward voltage compatibility (3.4V ±0.2V), millicandela output (392mcd ±10%), viewing angle (120°), lens geometry (2.40mm diameter round with flat top, colorless clear), surface mount configuration, physical dimensions (3.20mm L x 2.80mm W, 2.10mm max height), and regulatory compliance (ROHS3, REACH Unaffected, EAR99).

The substitute parts identified—67-21/B7C-AS2U1N/2T, AA3528VBS/D, and XZFBB45S—share the core optical and electrical characteristics within acceptable engineering tolerances. All substitutes maintain blue wavelength specification (470-471nm dominant), comparable forward voltage (3.2-3.3V), equivalent millicandela output (395-450mcd), identical viewing angle (120°), matching lens specifications, and identical physical footprint. All substitutes are ROHS3 compliant and EAR99 classified.

The primary distinction among substitutes is the package configuration: the main part uses 4-PLCC, while all identified substitutes employ 2-PLCC packaging. This represents a functional equivalence with modified pin configuration. Additionally, substitute parts carry MSL 3 (168 Hours) moisture sensitivity versus the main part's MSL 2 (1 Year), and all substitutes maintain active product status.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts—67-21/B7C-AS2U1N/2T, AA3528VBS/D, and XZFBB45S—are classified as active products with current manufacturing support, addressing the obsolescence status of the LB E6SG-S2U1-35-Z. Each substitute maintains ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment with the original component.

The AA3528VBS/D and XZFBB45S deliver superior millicandela output (450mcd and 447mcd respectively) compared to the original specification (392mcd), providing increased luminous intensity within the identical optical geometry and viewing angle. The 67-21/B7C-AS2U1N/2T maintains closer millicandela parity (395mcd) to the original component.

All substitutes operate at reduced test current (20mA versus 30mA), resulting in lower power consumption. Forward voltage specifications range from 3.2V to 3.3V, representing a 0.1-0.2V reduction from the original 3.4V specification. These electrical differences remain within typical circuit design tolerances for LED indication applications.

The primary design consideration is the package transition from 4-PLCC to 2-PLCC configuration. This modification requires PCB layout adjustment and potential circuit redesign to accommodate the altered pin arrangement. All substitute parts share identical physical footprint dimensions (3.20mm L x 2.80mm W, 2.10mm max height), enabling direct mechanical compatibility on existing PCB layouts designed for 2-PLCC packages.

Frequently Asked Questions (FAQ)

Q: Can the 2-PLCC substitute parts directly replace the 4-PLCC main part without PCB modification?

A: No. The 4-PLCC and 2-PLCC packages have different pin configurations and require PCB layout redesign. However, the physical footprint dimensions (3.20mm L x 2.80mm W, 2.10mm max height) are identical, allowing mechanical compatibility on new PCB designs. Existing 4-PLCC layouts require circuit board modification.

Q: What is the significance of the wavelength difference between the main part (469nm) and substitutes (470-471nm)?

A: The wavelength differences (469nm to 471nm) fall within the blue LED specification range and are imperceptible to human vision in indication applications. All parts maintain the same dominant color classification and optical characteristics.

Q: Why do the substitute parts have lower test current (20mA) compared to the main part (30mA)?

A: The test current specification reflects the manufacturer's standard measurement condition for that particular component design. The 20mA test current for substitutes is typical for 2-PLCC blue LED packages. Circuit design should accommodate the actual forward voltage and current requirements of the selected substitute.

Q: Are the substitute parts suitable for applications requiring the original MSL 2 (1 Year) moisture sensitivity specification?

A: The substitute parts carry MSL 3 (168 Hours) classification, indicating more stringent moisture handling requirements compared to the original MSL 2 (1 Year). Applications with extended storage or high-humidity environments must implement appropriate moisture control measures during component handling and storage.

Q: Which substitute part provides the closest electrical and optical match to the original LB E6SG-S2U1-35-Z?

A: The 67-21/B7C-AS2U1N/2T from Everlight Electronics maintains the closest millicandela output (395mcd versus 392mcd) and wavelength specification (471nm versus 469nm). However, AA3528VBS/D and XZFBB45S offer higher luminous intensity (450mcd and 447mcd) within the same optical geometry, providing enhanced brightness for indication applications.

Q: Do all substitute parts maintain the same regulatory compliance as the original component?

A: Yes. All three substitute parts are ROHS3 compliant, REACH Unaffected, and EAR99 classified, matching the regulatory status of the original LB E6SG-S2U1-35-Z.

Q: What is the impact of the forward voltage reduction (3.4V to 3.2-3.3V) on circuit design?

A: The 0.1-0.2V forward voltage reduction requires circuit verification to ensure adequate current limiting and voltage supply margin. Most LED indication circuits accommodate this variation within standard design tolerances. Circuit simulation or prototype testing is appropriate for critical applications.