SLR-332DU3F Orange LED Equivalent & Substitute Parts

Part Overview

The SLR-332DU3F is an orange diffused T-1 through-hole LED manufactured by Rohm Semiconductor, designed for LED indication applications with a dominant wavelength of 605nm. This part is marked as "Not For New Designs," indicating it has reached end-of-life status. The orange color specification and 2V forward voltage rating define its primary application parameters. Identifying equivalent substitute parts is necessary for designs requiring functional replacement or when original inventory becomes unavailable.

Key Parameters

Parameter	Value
Manufacturer Part Number	SLR-332DU3F
Manufacturer	Rohm Semiconductor
Color	Orange
Wavelength - Dominant	605nm
Voltage - Forward (Vf) (Typ)	2V
Current - Test	10mA
Lens Transparency	Diffused
Lens Size	3.20mm Dia
Mounting Type	Through Hole
Package / Case	Radial
Supplier Device Package	T-1
Product Status	Not For New Designs
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

The substitute parts provided in the reference list are yellow-emitting LEDs rather than orange-emitting LEDs. This represents a color family change from the original orange specification (605nm dominant wavelength). Substitution logic is based on the following allowed parameters:

Mounting Type: Through Hole (radial configuration maintained)
Lens Transparency: Diffused
Lens Style: Round with Domed Top
Package / Case: Radial (T-1 or 3mm equivalent)
Forward Voltage: 2V nominal (with tolerance for 2.1V variants)
Current - Test: 10mA to 20mA range
RoHS3 Compliance: Required

The substitute parts listed are functionally compatible at the mechanical and electrical interface level but operate at a different wavelength due to color specification differences. Selection among substitutes depends on specific millicandela rating requirements, viewing angle, and exact lens diameter tolerances for the application.

Parameter Comparison

Parameter	SLR-332DU3F (Main)	1254-10UYD/S530-A3	151031YS05900	264-7UYD/S530-A3	3YD-F	3YDL-F	414-10UYD/S530-A3	HLMP-1620	HLMP-1620-C00A1	HLMP-1620-C00A2	HLMP-1621
Color	Orange	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow	Yellow
Wavelength - Dominant (nm)	605	589	590	589	—	—	589	585	—	—	585
Voltage - Forward (Vf) (Typ)	2V	2V	2.1V	2V	2V	2V	2V	5V	5V	5V	12V
Current - Test	10mA	20mA	20mA	20mA	20mA	2mA	20mA	10mA	10mA	10mA	13mA
Millicandela Rating	10mcd	200mcd	30mcd	125mcd	20mcd	2mcd	40mcd	2.2mcd	2.2mcd	2.2mcd	2.2mcd
Lens Size	3.20mm Dia	3.00mm Dia	3.00mm Dia	2.90mm Dia	3mm, T-1	3mm, T-1	3.00mm Dia	3mm, T-1	3mm, T-1	3mm, T-1	3mm, T-1
Viewing Angle	85°	30°	60°	60°	35°	35°	120°	60°	60°	60°	60°
Lens Transparency	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused, Tinted	Diffused, Tinted	Diffused
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole
Package / Case	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial
Supplier Device Package	T-1	3.0mm Round	3mm Round	3.0mm Round	T-1	T-1	3mm	T-1	T-1	T-1	T-1
Height (Max)	4.60mm	5.20mm	5.55mm	6.20mm	5.30mm	5.30mm	7.00mm	6.35mm	—	—	6.35mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Not For New Designs	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All substitute parts listed are ROHS3 compliant and carry active product status, ensuring long-term availability and regulatory compliance. The primary distinction between the main part and substitutes is the color specification change from orange (605nm) to yellow (585nm–591nm range).

For applications where color specification is not critical to function, the following selection criteria apply:

2V Forward Voltage Group (Direct Electrical Interface): Parts 1254-10UYD/S530-A3, 151031YS05900, 264-7UYD/S530-A3, 3YD-F, 3YDL-F, and 414-10UYD/S530-A3 maintain the 2V nominal forward voltage of the original part. These are electrically compatible with existing 2V LED drive circuits without modification.

5V Forward Voltage Group: HLMP-1620, HLMP-1620-C00A1, and HLMP-1620-C00A2 operate at 5V and require circuit redesign for compatibility.

12V Forward Voltage Group: HLMP-1621 operates at 12V and requires circuit redesign.

Millicandela rating varies significantly across substitutes (2mcd to 200mcd). Selection should match the brightness requirement of the original application. The 3YDL-F variant offers the lowest brightness (2mcd) for low-intensity indication applications.

Viewing angle ranges from 30° to 120°. The original part specifies 85°, placing it in the wide-angle category. Substitutes with 60° viewing angle (151031YS05900, 264-7UYD/S530-A3, 3YD-F, 3YDL-F, HLMP-1620 series, HLMP-1621) provide comparable light distribution characteristics.

Frequently Asked Questions (FAQ)

Q: Can I directly replace SLR-332DU3F with any of the listed yellow LED substitutes?

A: Mechanical and electrical interface compatibility is maintained for all listed substitutes. However, the color change from orange to yellow will alter the visual indication. If color specification is functionally required, substitution is not appropriate. If color is incidental to the indication function, substitutes with matching forward voltage (2V group) provide direct circuit compatibility.

Q: Which substitute is closest to the original SLR-332DU3F in brightness?

A: The 151031YS05900 (30mcd) and 264-7UYD/S530-A3 (125mcd) offer brightness levels in proximity to the original 10mcd specification. The 3YD-F (20mcd) also provides comparable brightness. The 1254-10UYD/S530-A3 (200mcd) is significantly brighter and should be selected only if increased brightness is acceptable.

Q: What is the difference between T-1 package and 3.0mm round package designations?

A: Both refer to the same physical form factor—a 3mm diameter round lens with radial leads. T-1 is the traditional industry designation. The terms are interchangeable for mechanical compatibility purposes.

Q: Do the 5V and 12V LED options require circuit modifications?

A: Yes. The HLMP-1620 series (5V) and HLMP-1621 (12V) operate at different forward voltages than the original 2V part. Existing 2V LED drive circuits will not function correctly with these parts. Circuit redesign is required to accommodate the higher voltage drop.

Q: Are all substitutes RoHS3 compliant?

A: All listed substitutes carry ROHS3 Compliant status, matching the original part's regulatory compliance. This ensures compatibility with RoHS3-regulated supply chains and end-use applications.

Q: What is the significance of the "Not For New Designs" status on the original part?

A: This designation indicates the SLR-332DU3F has reached end-of-life. Rohm Semiconductor no longer recommends this part for new product development. Existing inventory may remain available, but long-term supply is not guaranteed. Substitutes with "Active" product status are recommended for new designs.

Q: How do viewing angles affect LED substitution?

A: Viewing angle determines the light distribution pattern. The original part specifies 85° (wide angle). Substitutes with 60° viewing angle concentrate light more narrowly. The 414-10UYD/S530-A3 (120°) provides even wider distribution. Selection should match the optical requirements of the application.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message