SLR-332DC3F Equivalent & Substitute Parts

Part Overview

The SLR-332DC3F is an orange 605nm LED indication component manufactured by Rohm Semiconductor. This through-hole radial T-1 package LED operates at 2V forward voltage with a 16mcd brightness rating and 85° viewing angle. The component is Active status and ROHS3 compliant, designed for discrete LED indication applications requiring orange wavelength output.

Substitute parts are necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility permits selection from qualified alternatives meeting equivalent electrical and mechanical specifications.

Key Parameters

Parameter	SLR-332DC3F
Manufacturer	Rohm Semiconductor
Color	Orange
Wavelength - Dominant	605nm
Voltage - Forward (Vf) (Typ)	2V
Current - Test	10mA
Millicandela Rating	16mcd
Viewing Angle	85°
Lens Style	Round with Domed Top
Lens Size	3.20mm Dia
Mounting Type	Through Hole
Package / Case	Radial
Supplier Device Package	T-1
Height (Max)	4.60mm
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the SLR-332DC3F is determined by the following critical parameters:

Primary Substitution Criteria:

Color: Orange (605nm wavelength range)
Mounting Type: Through Hole Radial
Package: T-1
Voltage - Forward (Vf): 2V nominal (tolerance range 1.95V to 2.15V acceptable)
Current - Test: 10mA to 20mA operating range
Lens Style: Round with Domed Top
Configuration: Standard

Qualified Orange LED Substitutes:

The following parts meet the orange wavelength requirement (600nm to 610nm dominant wavelength) with compatible electrical and mechanical specifications:

HLMP-Y402-G0000 (Broadcom Limited): Orange 605nm, 2.1V, 20mA test current, 29mcd, T-1 package
WP132XNT (Kingbright): Orange 602nm, 2.05V, 20mA test current, 20mcd, T-1 package
WP710A10NT (Kingbright): Orange 602nm, 2.05V, 20mA test current, 30mcd, T-1 package

Non-Qualifying Substitutes:

The following parts do not meet substitution criteria due to color mismatch (yellow wavelength instead of orange):

HLMP-1420 (Broadcom Limited): Yellow 585nm
HLMP-1421 (Broadcom Limited): Yellow 585nm
LTL-4252N (Lite-On Inc.): Yellow 588nm
SSL-LX3044YT (Lumex Opto/Components Inc.): Yellow 585nm
WP710A10YT (Kingbright): Yellow 588nm

These yellow alternatives are listed in the original substitute field but are not electrically equivalent for applications requiring orange indication.

Parameter Comparison

Parameter	SLR-332DC3F	HLMP-Y402-G0000	WP132XNT	WP710A10NT
Manufacturer	Rohm Semiconductor	Broadcom Limited	Kingbright	Kingbright
Color	Orange	Orange	Orange	Orange
Wavelength - Dominant	605nm	605nm	602nm	602nm
Voltage - Forward (Vf) (Typ)	2V	2.1V	2.05V	2.05V
Current - Test	10mA	20mA	20mA	20mA
Millicandela Rating	16mcd	29mcd	20mcd	30mcd
Viewing Angle	85°	45°	50°	34°
Lens Size	3.20mm Dia	3mm, T-1	3mm, T-1	2.90mm Dia
Height (Max)	4.60mm	5.20mm	5.20mm	5.90mm
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial	Radial	Radial	Radial
Supplier Device Package	T-1	T-1	T-1	T-1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

HLMP-Y402-G0000 (Broadcom Limited)

This substitute provides the closest wavelength match at 605nm dominant wavelength, identical to the SLR-332DC3F. Forward voltage is 2.1V (0.1V higher), requiring circuit current-limiting resistor adjustment. Brightness is elevated at 29mcd versus 16mcd. Viewing angle is narrower at 45° versus 85°. All components are ROHS3 compliant and Active status. Height is 5.20mm versus 4.60mm, requiring PCB layout verification for clearance-constrained applications. Inventory availability is 55,742 units.

WP132XNT (Kingbright)

This substitute operates at 2.05V forward voltage with 20mcd brightness. Dominant wavelength is 602nm, within acceptable orange range. Viewing angle of 50° is narrower than the original 85°. Height is 5.20mm. ROHS3 compliant and Active status. Inventory is 2,085 units.

WP710A10NT (Kingbright)

This substitute operates at 2.05V forward voltage with 30mcd brightness. Dominant wavelength is 602nm. Viewing angle is 34°, significantly narrower than the original 85°. Height is 5.90mm, the tallest of qualified substitutes. ROHS3 compliant and Active status. Inventory is 1,406 units.

All three qualified orange substitutes maintain T-1 through-hole radial package compatibility and ROHS3 compliance. Selection depends on circuit tolerance for forward voltage variation, brightness requirements, and viewing angle constraints specific to the application.

Frequently Asked Questions (FAQ)

Q: Can yellow LED substitutes replace the SLR-332DC3F?

A: No. The SLR-332DC3F is specified for orange indication at 605nm dominant wavelength. Yellow alternatives (585nm to 590nm) produce different color output and are not electrically equivalent for applications requiring orange indication. Color-specific circuit designs and user interface requirements mandate orange wavelength compliance.

Q: What is the maximum forward voltage variation acceptable for substitution?

A: The SLR-332DC3F operates at 2V nominal. Qualified substitutes range from 2.05V to 2.1V. Circuit current-limiting resistors must be recalculated for each substitute to maintain proper LED current. A 0.1V increase requires resistor adjustment to prevent over-current conditions.

Q: Are all qualified substitutes pin-compatible?

A: Yes. All qualified orange substitutes (HLMP-Y402-G0000, WP132XNT, WP710A10NT) use T-1 through-hole radial package with identical pin configuration. Physical PCB footprint compatibility is maintained. Height variations (4.60mm to 5.90mm) require clearance verification in space-constrained designs.

Q: What is the impact of viewing angle differences?

A: The SLR-332DC3F provides 85° viewing angle, the widest among qualified substitutes. HLMP-Y402-G0000 offers 45°, WP132XNT offers 50°, and WP710A10NT offers 34°. Narrower viewing angles concentrate light intensity but reduce visibility from off-axis positions. Application-specific visibility requirements determine acceptable viewing angle range.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All qualified orange substitutes are ROHS3 compliant and maintain Active product status, meeting current regulatory requirements and ensuring continued availability.

Q: How does brightness variation affect circuit design?

A: The SLR-332DC3F provides 16mcd brightness. Qualified substitutes range from 20mcd to 30mcd. Higher brightness may require reduced test current or increased series resistance to match original brightness levels. Circuit design must accommodate brightness variation through resistor adjustment or current-limiting modifications.

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