SLR-56VRTE7 Equivalent & Substitute Parts

Part Overview

The SLR-56VRTE7 is a red diffused through-hole LED manufactured by Rohm Semiconductor, designed for indication applications with a dominant wavelength of 630nm and forward voltage of 2V at 10mA test current. 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 SLR-56 series provides a 10mcd brightness rating with a 40° viewing angle in a standard radial package configuration.

Key Parameters

Parameter	Value
Manufacturer Part Number	SLR-56VRTE7
Manufacturer	Rohm Semiconductor
Color	Red
Lens Transparency	Diffused
Millicandela Rating	10mcd
Voltage - Forward (Vf) Typical	2V
Current - Test	10mA
Viewing Angle	40°
Mounting Type	Through Hole
Wavelength - Dominant	630nm
Lens Size	5.00mm Dia
Height (Max)	8.90mm
Package / Case	Radial
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Not For New Designs

Substitute Part Grouping Explanation

Substitution of the SLR-56VRTE7 is determined by the following critical parameters:

Primary Compatibility Criteria:

Color: Red
Mounting Type: Through Hole (Radial package)
Lens Transparency: Diffused
Lens Size: 5.00mm Dia (standard T-1 3/4 form factor)
Voltage - Forward (Vf): 2V nominal
Current - Test: 10mA to 20mA operating range
Wavelength - Dominant: 620nm to 650nm red spectrum
Height (Max): 8.70mm to 8.95mm

Parametric Equivalent: SLR-56VRT32 from Rohm Semiconductor maintains identical electrical and optical specifications with the same base product number (SLR-56), differing only in packaging format (Cut Tape vs. Tape & Box) and product status (Active vs. Not For New Designs).

Similar Substitutes: The remaining parts are classified as similar substitutes due to variations in one or more parameters: millicandela rating (ranging from 6.3mcd to 700mcd), viewing angle (30° to 60°), test current (10mA to 20mA), or wavelength precision. These parts maintain core compatibility for red diffused through-hole LED indication applications but require circuit-level verification for brightness and angular distribution requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Color	Lens Transparency	Millicandela Rating	Vf (Typ)	Current - Test	Viewing Angle	Wavelength - Dominant	Lens Size	Height (Max)	RoHS Status
SLR-56VRTE7	Rohm Semiconductor	Not For New Designs	Red	Diffused	10mcd	2V	10mA	40°	630nm	5.00mm Dia	8.90mm	ROHS3 Compliant
SLR-56VRT32	Rohm Semiconductor	Active	Red	Diffused	10mcd	2V	10mA	40°	630nm	5.00mm Dia	8.90mm	ROHS3 Compliant
LTL2R3KEK	Lite-On Inc.	Active	Red	Clear	700mcd	2.05V	20mA	30°	624nm	5mm, T-1 3/4	8.70mm	ROHS3 Compliant
1383SDRD/S530-A3	Everlight Electronics Co Ltd	Active	Red	Diffused	320mcd	2V	20mA	30°	639nm	5.00mm Dia	8.90mm	ROHS3 Compliant
151051RS11000	Würth Elektronik	Active	Red	Diffused	30mcd	2.1V	20mA	60°	645nm	4.90mm Dia	8.95mm	ROHS3 Compliant
333-2SDRD/S530-A3	Everlight Electronics Co Ltd	Active	Red	Diffused	160mcd	2V	20mA	30°	639nm	5.00mm Dia	8.90mm	ROHS3 Compliant
5219240F	Dialight	Active	Red	Diffused	6.3mcd	—	10mA	—	—	5.00mm Dia	8.94mm	ROHS3 Compliant
5219480F	Dialight	Active	Red	Diffused	—	—	—	—	626nm	5.00mm Dia	—	ROHS3 Compliant
5219672F	Dialight	Active	Red	Diffused	60mcd	2V	20mA	60°	623nm	4.75mm Dia	8.21mm	ROHS3 Compliant
HLMP-3301	Broadcom Limited	Active	Red	Diffused	5.4mcd	1.9V	10mA	60°	626nm	5mm, T-1 3/4	9.19mm	ROHS3 Compliant
HLMP-3301-D0000	Broadcom Limited	Active	Red	Diffused	2.1mcd	1.9V	10mA	60°	626nm	5mm, T-1 3/4	9.19mm	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: SLR-56VRT32

SLR-56VRT32 is the direct parametric equivalent and preferred substitute. It maintains identical electrical specifications (2V Vf, 10mA test current), optical characteristics (10mcd, 630nm dominant wavelength, 40° viewing angle), and mechanical dimensions (5.00mm lens, 8.90mm height). The part is manufactured by Rohm Semiconductor under the same SLR-56 base product number and carries Active product status with ROHS3 compliance. Packaging differs only in format (Cut Tape vs. Tape & Box), which does not affect functional performance.

Secondary Recommendations for Brightness-Matched Applications:

For applications requiring higher brightness output while maintaining diffused red optics and through-hole mounting:

1383SDRD/S530-A3 (Everlight): 320mcd at 2V, 20mA, 630nm wavelength family, diffused lens
333-2SDRD/S530-A3 (Everlight): 160mcd at 2V, 20mA, 630nm wavelength family, diffused lens

For applications tolerating lower brightness:

5219240F (Dialight): 6.3mcd at 10mA, maintains original test current
HLMP-3301-D0000 (Broadcom): 2.1mcd at 10mA, 1.9V forward voltage

Considerations for Alternative Selections:

LTL2R3KEK (Lite-On) features clear lens optics rather than diffused, resulting in higher brightness (700mcd) and narrower viewing angle (30°). This part is suitable only if application requirements permit clear lens characteristics and higher luminous intensity.

Dialight 5219672F and Würth 151051RS11000 offer wider viewing angles (60°) but with increased brightness and modified test current specifications, requiring circuit validation.

All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and radial through-hole mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can SLR-56VRT32 be used as a direct drop-in replacement for SLR-56VRTE7?

A: Yes. SLR-56VRT32 is a parametric equivalent with identical electrical and optical specifications. The only difference is packaging format (Cut Tape vs. Tape & Box), which does not affect component performance or circuit compatibility.

Q: What is the primary reason to substitute the SLR-56VRTE7?

A: The SLR-56VRTE7 is classified as "Not For New Designs." For new production runs or design updates, SLR-56VRT32 (Active status) is the recommended equivalent from the same manufacturer.

Q: Are the Everlight and Dialight parts suitable for direct substitution?

A: Everlight parts (1383SDRD/S530-A3 and 333-2SDRD/S530-A3) are suitable if higher brightness is acceptable. They maintain 2V forward voltage and diffused lens characteristics but operate at 20mA test current and deliver 320mcd and 160mcd respectively, compared to the original 10mcd. Dialight parts require individual circuit validation due to variations in brightness, viewing angle, and test current specifications.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by: color (red), mounting type (through-hole radial), lens transparency (diffused preferred), lens size (5.00mm standard), forward voltage (2V nominal), test current (10mA to 20mA range), wavelength (620nm to 650nm red spectrum), and physical height (8.70mm to 8.95mm). Deviations in brightness (millicandela) and viewing angle require application-level verification.

Q: Does the Lite-On LTL2R3KEK have the same optical characteristics?

A: No. LTL2R3KEK features a clear lens instead of diffused, resulting in higher brightness (700mcd) and narrower viewing angle (30°). It is suitable only for applications where clear lens optics and higher intensity are required.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original SLR-56VRTE7 compliance status.

Q: What is the difference between the two Broadcom HLMP-3301 variants?

A: HLMP-3301 and HLMP-3301-D0000 are both Broadcom products with identical electrical specifications (1.9V Vf, 10mA test current) and mechanical dimensions. The primary difference is millicandela rating: HLMP-3301 delivers 5.4mcd while HLMP-3301-D0000 delivers 2.1mcd. Both feature 60° viewing angle and 626nm dominant wavelength.

Q: Can I use parts with different test currents (10mA vs. 20mA)?

A: Yes, provided circuit design accommodates the different current requirements. Parts specified at 20mA test current (Everlight, Würth, Dialight 5219672F) will operate at different brightness levels when driven at the original 10mA specification. Verify brightness requirements before selection.

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