SLR-342VCTB7 Equivalent & Substitute Parts

Part Overview

The SLR-342VCTB7 is a red LED indication component manufactured by Rohm Semiconductor, designed for through-hole mounting applications. This part is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product line. Finding equivalent or substitute parts is necessary for ongoing production support, maintenance applications, or when original stock becomes unavailable.

Substiute Parts

SLR-342VCTB7

Rohm SemiconductorIn Stock: 2871SLR-342VCTB7 Datasheet

Current PartRFQ

SLR-343VCT32

Rohm SemiconductorIn Stock: 8457SLR-343VCT32 Datasheet

Parametric EquivalentRFQ

LTL-4222N

Lite-On Inc.In Stock: 51236LTL-4222N Datasheet

SimilarRFQ

LTL1CHJETNN

Lite-On Inc.In Stock: 826LTL1CHJETNN Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SLR-342VCTB7 are classified based on the following critical parameters that determine functional compatibility:

Primary Substitution Criteria:

• Color: Red
• Lens Transparency: Clear
• Mounting Type: Through Hole
• Package / Case: Radial
• Voltage - Forward (Vf) (Typ): 2V nominal (±0.05V tolerance acceptable)
• Current - Test: 10mA to 20mA range
• Viewing Angle: 40° to 45° range
• Wavelength - Peak: 623nm to 650nm range
• Lens Size: 3mm to 3.10mm diameter
• Height (Max): 5.20mm to 5.85mm range
• RoHS Status: ROHS3 Compliant

The SLR-342VCTB7 has two classified substitute parts: one parametric equivalent (SLR-343VCT32) and two similar alternatives (LTL-4222N, LTL1CHJETNN).

Parameter Comparison

Engineering Selection Recommendations

SLR-343VCT32 (Parametric Equivalent): This part is the primary substitute for the SLR-342VCTB7. It maintains identical electrical characteristics (2V forward voltage, 10mA test current, 25mcd brightness) and mechanical dimensions (3.10mm lens diameter, 5.60mm maximum height). The SLR-343VCT32 is classified as Active product status, ensuring continued availability and manufacturing support. Both parts are ROHS3 compliant with MSL 1 rating. The packaging differs (Cut Tape vs. Tape & Box), which may affect procurement logistics but does not impact functional performance.

LTL-4222N (Similar Alternative): This Lite-On Inc. component provides functional substitution with minor parameter variations. It maintains the 2V forward voltage and 10mA test current specifications. The millicandela rating is slightly higher (29mcd vs. 25mcd), and the viewing angle is marginally wider (45° vs. 40°). The wavelength peak shifts from 650nm to 635nm, representing a 15nm difference within the red spectrum. Height increases to 5.85mm maximum. This part is Active status with ROHS3 compliance. The REACH Status differs (Affected vs. Unaffected), which may require additional regulatory documentation in certain jurisdictions.

LTL1CHJETNN (Similar Alternative): This Lite-On Inc. component offers substitution with more significant parameter deviations. The millicandela rating is substantially higher (180mcd vs. 25mcd), making it suitable only for applications requiring increased brightness. The forward voltage increases to 2.05V, and the test current doubles to 20mA, requiring circuit design verification. The wavelength peak is 632nm. Height is reduced to 5.20mm. This part is Active status with ROHS3 compliance. Selection of this part requires confirmation that the application can accommodate the increased brightness and modified electrical characteristics.

Frequently Asked Questions (FAQ)

Q: Can SLR-343VCT32 be used as a direct replacement for SLR-342VCTB7?

A: Yes. The SLR-343VCT32 is a parametric equivalent with identical electrical specifications (2V forward voltage, 10mA test current, 25mcd brightness) and compatible mechanical dimensions. The primary difference is packaging format (Cut Tape vs. Tape & Box) and product status (Active vs. Not For New Designs). No circuit modifications are required.

Q: What are the key differences between the Rohm and Lite-On substitute options?

A: The Rohm SLR-343VCT32 maintains exact electrical and optical specifications as the original part. The Lite-On alternatives (LTL-4222N and LTL1CHJETNN) introduce parameter variations: LTL-4222N offers similar performance with slightly higher brightness (29mcd) and wider viewing angle (45°), while LTL1CHJETNN provides significantly higher brightness (180mcd) at the cost of increased forward voltage (2.05V) and test current (20mA).

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts (SLR-343VCT32, LTL-4222N, LTL1CHJETNN) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original SLR-342VCTB7 specifications.

Q: Does the wavelength difference between parts affect compatibility?

A: The wavelength variations (650nm for SLR-342VCTB7 and SLR-343VCT32 vs. 635nm for LTL-4222N and 632nm for LTL1CHJETNN) represent shifts within the red spectrum. Compatibility depends on application requirements. For general indication purposes, these differences are typically acceptable. For color-critical applications, verify that the specific wavelength meets design specifications.

Q: What is the impact of different millicandela ratings?

A: The SLR-342VCTB7 and SLR-343VCT32 both provide 25mcd brightness. The LTL-4222N offers 29mcd (16% increase), while the LTL1CHJETNN provides 180mcd (620% increase). Higher brightness may be visible in brighter ambient conditions but may require current limiting adjustments in the circuit design. Lower brightness would not be acceptable as a substitute.

Q: Can LTL1CHJETNN be used without circuit modifications?

A: The LTL1CHJETNN has different electrical characteristics (2.05V forward voltage, 20mA test current vs. 2V and 10mA for the original part). Circuit verification is required to confirm that the power supply and current limiting resistors can accommodate these specifications. Direct substitution without design review is not recommended.

Q: How do packaging differences affect part selection?

A: The SLR-342VCTB7 is supplied in Tape & Box format, while SLR-343VCT32 uses Cut Tape, and Lite-On parts use Bulk packaging. These differences affect procurement, handling, and storage but do not impact electrical or mechanical performance. Selection should consider manufacturing assembly requirements and inventory management practices.