LN48YP Equivalent & Substitute Parts

Part Overview

The Panasonic LN48YP is an amber LED indicator with a 3mm round diffused lens, designed for through-hole mounting in indication applications. Specified at 2.2V forward voltage and 5mcd brightness, this component operates at 20mA test current. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain compatibility with through-hole mounting, amber color specification, and diffused lens characteristics while meeting current RoHS compliance requirements.

Substiute Parts

LN48YP

Panasonic Electronic ComponentsIn Stock: 844LN48YP Datasheet

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SSL-LX3044AD

Lumex Opto/Components Inc.In Stock: 10868SSL-LX3044AD Datasheet

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SSL-LX3044LAD

Lumex Opto/Components Inc.In Stock: 1234SSL-LX3044LAD Datasheet

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SSL-LX3052YD

Lumex Opto/Components Inc.In Stock: 6832SSL-LX3052YD Datasheet

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SSL-LX3054AD

Lumex Opto/Components Inc.In Stock: 978SSL-LX3054AD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following mandatory parameters:

• Color: Amber (primary functional requirement)
• Lens Transparency: Diffused (optical characteristic)
• Lens Size: 3mm, T-1 (mechanical fit)
• Mounting Type: Through Hole (assembly compatibility)
• Package / Case: Radial (lead configuration)
• Voltage - Forward (Vf): 2.0V to 2.2V range (circuit compatibility)
• Current - Test: 20mA (operational specification)

Parts meeting these criteria are classified as direct substitutes. SSL-LX3044AD, SSL-LX3044LAD, and SSL-LX3054AD satisfy all mandatory parameters. SSL-LX3052YD shares mechanical and electrical characteristics but differs in color (yellow instead of amber) and is listed as a cross-reference option only.

Parameter Comparison

Engineering Selection Recommendations

For direct replacement of the obsolete LN48YP, select from SSL-LX3044AD, SSL-LX3044LAD, or SSL-LX3054AD. All three are active products with ROHS3 compliance and maintain amber color, diffused lens, 3mm T-1 form factor, and through-hole radial package compatibility.

SSL-LX3044AD operates at 2.1V forward voltage with 15mcd brightness and 4.60mm maximum height. SSL-LX3044LAD operates at 2.0V forward voltage with 30mcd brightness and 4.60mm maximum height. SSL-LX3054AD operates at 2.0V forward voltage with 30mcd brightness and 5.25mm maximum height.

Forward voltage differences (2.0V to 2.2V range) are within acceptable circuit tolerance for standard LED indication circuits. Brightness increases (15mcd to 30mcd versus 5mcd) provide enhanced visibility without requiring circuit modification. Height variations (4.60mm to 5.25mm) remain compatible with standard through-hole PCB layouts.

SSL-LX3052YD is a yellow LED with identical mechanical and electrical specifications except color. This part is suitable only for applications where yellow indication is functionally equivalent to amber.

Frequently Asked Questions (FAQ)

Q: Can SSL-LX3044AD directly replace LN48YP without circuit modification?

A: Yes. SSL-LX3044AD maintains the same 20mA test current, operates within the acceptable forward voltage range (2.1V versus 2.2V), and uses identical through-hole radial packaging. The increased brightness (15mcd versus 5mcd) does not require circuit changes for standard indication applications.

Q: What is the difference between SSL-LX3044AD, SSL-LX3044LAD, and SSL-LX3054AD?

A: All three are amber diffused 3mm T-1 through-hole LEDs with ROHS3 compliance. SSL-LX3044AD and SSL-LX3044LAD differ in forward voltage (2.1V versus 2.0V) and brightness (15mcd versus 30mcd), with identical 4.60mm height. SSL-LX3054AD operates at 2.0V with 30mcd brightness but has 5.25mm height. Selection depends on circuit voltage tolerance and brightness requirements.

Q: Is SSL-LX3052YD a suitable substitute?

A: SSL-LX3052YD is mechanically and electrically compatible but differs in color (yellow instead of amber). Use only if the application permits yellow indication or if amber and yellow are functionally interchangeable in the circuit design.

Q: What are the height differences, and do they affect PCB layout?

A: LN48YP maximum height is 5.20mm. SSL-LX3044AD and SSL-LX3044LAD are 4.60mm (shorter). SSL-LX3054AD and SSL-LX3052YD are 5.25mm (slightly taller). These variations are within standard through-hole component tolerances and do not require PCB redesign for typical indicator applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. SSL-LX3044AD, SSL-LX3044LAD, SSL-LX3054AD, and SSL-LX3052YD are all ROHS3 compliant. The original LN48YP is RoHS non-compliant, making substitution necessary for applications requiring RoHS compliance.

Q: What is the wavelength difference between LN48YP and the substitutes?

A: LN48YP peak wavelength is 590nm. SSL-LX3044AD is 605nm, SSL-LX3044LAD is 610nm, and SSL-LX3054AD is 610nm. These differences represent slight shifts in amber hue but remain within the amber color specification for indication applications. SSL-LX3052YD at 585nm is yellow.