SLR-342VC3F Equivalent & Substitute Parts

Part Overview

The SLR-342VC3F is a red 630nm LED indicator from Rohm Semiconductor designed for through-hole applications with a 2V forward voltage and 25mcd brightness rating. This part is classified as "Not For New Designs," making identification of active equivalent and substitute components essential for ongoing production support and design updates. The T-1 radial package with clear domed lens provides standard indication functionality in discrete LED applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	SLR-342VC3F
Manufacturer	Rohm Semiconductor
Color	Red
Wavelength - Dominant	630nm
Voltage - Forward (Vf) (Typ)	2V
Current - Test	10mA
Millicandela Rating	25mcd
Lens Style	Round with Domed Top
Lens Size	3.10mm Dia
Viewing Angle	40°
Mounting Type	Through Hole
Package / Case	Radial
Supplier Device Package	T-1
Height (Max)	5.40mm
RoHS Status	ROHS3 Compliant
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitution of the SLR-342VC3F is determined by the following critical parameters:

Primary Compatibility Criteria:

Color: Red
Mounting Type: Through Hole
Package / Case: Radial
Lens Transparency: Clear

Secondary Compatibility Parameters:

Voltage - Forward (Vf): 1.9V to 2.1V range
Current - Test: 10mA to 20mA range
Millicandela Rating: 19mcd to 30mcd range
Wavelength - Dominant: 623nm to 630nm range
Lens Style: Round with Domed Top
Lens Size: 3.0mm to 3.10mm Dia
Viewing Angle: 30° to 45° range
Height (Max): 4.10mm to 6.35mm range

Substitute parts are grouped based on matching the primary criteria while maintaining electrical and mechanical parameters within acceptable tolerances for LED indicator applications. Parts with active product status are prioritized for new designs.

Parameter Comparison

Part Number	Manufacturer	Color	Wavelength (nm)	Vf (Typ)	Test Current	Brightness (mcd)	Lens Size	Viewing Angle	Height (Max)	Product Status
SLR-342VC3F	Rohm Semiconductor	Red	630	2.0V	10mA	25	3.10mm	40°	5.40mm	Not For New Designs
SLR-343VC3F	Rohm Semiconductor	Red	630	2.0V	10mA	25	3.10mm	40°	5.60mm	Active
484-10SURT/S530-A3	Everlight Electronics Co Ltd	Red	624	2.0V	20mA	20	3.00mm	130°	4.10mm	Active
HLMP-1321	Broadcom Limited	Red	626	1.9V	10mA	30	3mm, T-1	45°	6.35mm	Active
HLMP-1321-G0002	Broadcom Limited	Red	626	1.9V	10mA	30	3mm, T-1	45°	6.35mm	Active
HLMP-Y301-F0000	Broadcom Limited	Red	626	2.1V	20mA	19	3mm, T-1	45°	5.20mm	Active
LTL-1CHEE	Lite-On Inc.	Red	625	2.0V	20mA	19	3.10mm	45°	5.20mm	Active
LTL-4222N	Lite-On Inc.	Red	623	2.0V	10mA	29	3mm, T-1	45°	5.85mm	Active
LTL1CHJETNN	Lite-On Inc.	Red	624	2.05V	20mA	180	3mm, T-1	45°	5.20mm	Active
SSL-LX3044IT	Lumex Opto/Components Inc.	Red	635	2.1V	20mA	30	3mm, T-1	30°	4.60mm	Active
SSL-LX3044SRT	Lumex Opto/Components Inc.	Red	660	1.7V	20mA	80	3mm, T-1	30°	4.60mm	Active

Engineering Selection Recommendations

Direct Equivalent (Recommended for Replacement): SLR-343VC3F from Rohm Semiconductor is the primary equivalent, offering identical electrical specifications (2.0V, 10mA, 25mcd, 630nm) with active product status. This part maintains the same series lineage and requires no circuit redesign.

Active Substitutes with Minimal Parameter Variance: HLMP-1321 and HLMP-1321-G0002 (Broadcom Limited) provide equivalent functionality with 1.9V forward voltage and 30mcd brightness. These parts are ROHS3 compliant and REACH unaffected, suitable for applications where slightly lower forward voltage is acceptable.

LTL-4222N (Lite-On Inc.) matches the 2.0V forward voltage and 10mA test current with 29mcd brightness, maintaining close electrical compatibility.

Substitutes with Moderate Parameter Differences: HLMP-Y301-F0000 (Broadcom Limited) operates at 2.1V with 20mA test current and 19mcd brightness. This part is suitable where higher forward voltage and test current are accommodated in circuit design.

LTL-1CHEE (Lite-On Inc.) operates at 2.0V with 20mA test current and 19mcd brightness, appropriate for designs tolerating increased test current.

SSL-LX3044IT (Lumex Opto/Components Inc.) provides 30mcd brightness at 2.1V with 20mA test current and narrower 30° viewing angle.

Substitutes with Significant Parameter Differences: 484-10SURT/S530-A3 (Everlight Electronics Co Ltd) features wide-angle 130° viewing angle with 20mcd brightness, suitable for applications requiring expanded viewing characteristics.

LTL1CHJETNN (Lite-On Inc.) provides significantly higher brightness at 180mcd, appropriate only for applications requiring substantially increased luminous intensity.

SSL-LX3044SRT (Lumex Opto/Components Inc.) operates at lower 1.7V forward voltage with 80mcd brightness and 660nm wavelength, suitable for applications with different voltage and brightness requirements.

All substitute parts maintain ROHS3 compliance and through-hole radial packaging compatibility with the original SLR-342VC3F.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SLR-342VC3F with SLR-343VC3F? A: Yes. SLR-343VC3F is the direct equivalent with identical electrical specifications (2.0V, 10mA, 25mcd, 630nm wavelength) and active product status. The only difference is maximum height (5.60mm vs 5.40mm), which is negligible for most through-hole applications.

Q: What is the primary reason to substitute this part? A: SLR-342VC3F carries "Not For New Designs" status. Active alternatives ensure long-term supply availability and support for ongoing production.

Q: Are all substitute parts pin-compatible? A: Yes. All listed substitutes maintain radial through-hole package configuration with identical mechanical footprint compatibility. PCB layout modifications are not required.

Q: Which substitute has the closest electrical match? A: SLR-343VC3F, HLMP-1321, and LTL-4222N provide the closest electrical matches with forward voltages between 1.9V and 2.0V and brightness ratings between 25mcd and 30mcd.

Q: Can I use LTL1CHJETNN as a direct replacement? A: LTL1CHJETNN is not a direct replacement due to significantly higher brightness (180mcd vs 25mcd). Use only if your application requires substantially increased luminous intensity and your circuit design accommodates 2.05V forward voltage and 20mA test current.

Q: What is the difference between HLMP-1321 and HLMP-1321-G0002? A: Both parts are electrically identical (1.9V, 10mA, 30mcd, 626nm). The difference is packaging: HLMP-1321 is supplied in bulk, while HLMP-1321-G0002 is supplied in cut tape format.

Q: Are there viewing angle differences I should consider? A: Yes. Most substitutes maintain 40° to 45° viewing angles similar to the original. Exception: 484-10SURT/S530-A3 features 130° wide-angle viewing, and SSL-LX3044IT/SSL-LX3044SRT feature narrower 30° viewing angles. Select based on your application's optical requirements.

Q: Do all substitutes meet RoHS3 compliance? A: Yes. All listed substitute parts are ROHS3 compliant, maintaining regulatory compliance with the original SLR-342VC3F.

Q: What forward voltage range is acceptable for substitution? A: Substitutes operate between 1.7V and 2.1V. Most applications accommodate this range. Verify your circuit's current-limiting resistor design supports the selected substitute's forward voltage.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message