VLMB40L1M2-34-GS08 Equivalent & Substitute Parts

Part Overview

The VLMB40L1M2-34-GS08 is a blue LED indication component manufactured by Vishay Semiconductor Opto Division, featuring a 467nm dominant wavelength and 2-SMD J-Lead package configuration. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity. The component operates at 3.2V forward voltage with a 2mA test current and delivers 19.6mcd luminous intensity in a 2.40mm diameter round lens with flat top configuration.

Substiute Parts

VLMB40L1M2-34-GS08

Vishay Semiconductor Opto DivisionIn Stock: 1019VLMB40L1M2-34-GS08 Datasheet

Current PartRFQ

VLMB41P1Q2-GS08

Vishay Semiconductor Opto DivisionIn Stock: 11193VLMB41P1Q2-GS08 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLMB40L1M2-34-GS08 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Package / Case: 2-SMD, J-Lead
• Supplier Device Package: 2-PLCC
• Mounting Type: Surface Mount
• Physical Dimensions: 3.00mm L x 2.80mm W, 1.85mm Height (Max)
• Lens Style: Round with Flat Top
• Lens Size: 2.40mm Dia
• Viewing Angle: 120°
• Color: Blue
• Voltage - Forward (Vf) (Typ): 3.2V

Allowable Parameter Variations:

• Wavelength - Dominant: 467nm to 469nm (within blue spectrum range)
• Wavelength - Peak: 464nm (consistent across series)
• Millicandela Rating: 19.6mcd to 79mcd (luminous intensity variation acceptable for indication applications)
• Current - Test: 2mA to 10mA (operational current range within component capability)
• Product Status: Active preferred over Obsolete for procurement continuity
• Series: VLM.4 (same product family)

The VLMB41P1Q2-GS08 qualifies as a direct substitute based on identical package geometry, electrical characteristics, and mechanical specifications, with enhanced luminous intensity and active product status.

Parameter Comparison

Engineering Selection Recommendations

The VLMB41P1Q2-GS08 is the designated manufacturer substitute for the obsolete VLMB40L1M2-34-GS08. Selection of this substitute is supported by the following engineering factors:

Product Status Transition: The original part is classified as obsolete, while the substitute maintains active product status with Vishay Semiconductor Opto Division, ensuring long-term availability and supply chain continuity.

Compliance Alignment: Both components maintain identical ROHS3 compliance and MSL ratings (2A, 4 Weeks), ensuring compatibility with existing manufacturing and storage protocols.

Electrical and Mechanical Compatibility: The substitute part maintains identical forward voltage (3.2V), package geometry (2-SMD, J-Lead), physical dimensions (3.00mm L x 2.80mm W, 1.85mm height), lens configuration (2.40mm round with flat top), and viewing angle (120°). These parameters ensure direct PCB compatibility without design modification.

Optical Characteristics: The dominant wavelength shift from 467nm to 469nm remains within the blue spectrum range and maintains identical peak wavelength (464nm). The increased luminous intensity (79mcd versus 19.6mcd) and test current (10mA versus 2mA) represent performance enhancements suitable for indication applications.

Frequently Asked Questions (FAQ)

Q: Can the VLMB41P1Q2-GS08 be used as a direct replacement for the VLMB40L1M2-34-GS08 without PCB modifications?

A: Yes. Both components share identical package specifications (2-SMD, J-Lead), physical dimensions (3.00mm L x 2.80mm W, 1.85mm height), and electrical characteristics (3.2V forward voltage). No PCB layout changes are required.

Q: What is the significance of the wavelength difference between 467nm and 469nm?

A: Both wavelengths fall within the blue spectrum range and are visually indistinguishable in indication applications. The peak wavelength remains constant at 464nm for both components.

Q: Why does the substitute part have a higher millicandela rating (79mcd versus 19.6mcd)?

A: The VLMB41P1Q2-GS08 operates at a higher test current (10mA versus 2mA), resulting in increased luminous intensity. This represents a performance enhancement and does not affect compatibility.

Q: Are there any compliance or regulatory differences between the two parts?

A: No. Both components maintain identical ROHS3 compliance, MSL ratings (2A, 4 Weeks), and are manufactured by the same supplier. Compliance documentation remains consistent.

Q: What is the primary reason for substitution?

A: The VLMB40L1M2-34-GS08 is classified as obsolete. The VLMB41P1Q2-GS08 is the active equivalent, ensuring procurement continuity and long-term supply availability.

Q: Are there any thermal or operational differences that would affect circuit design?

A: The substitute part operates at identical forward voltage (3.2V) and maintains the same package thermal characteristics. Circuit design parameters remain unchanged.