TLUR6401 Red Diffused LED T-1 3/4 Through Hole Equivalent & Substitute Parts

Part Overview

The TLUR6401 is a red diffused LED manufactured by Vishay Semiconductor Opto Division, designed for discrete indication applications in through-hole configurations. This part operates at 2V forward voltage with a 15mcd brightness rating and 630nm dominant wavelength. The TLUR6401 is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Substitute parts must maintain compatibility with the original electrical characteristics, mechanical form factor, and mounting requirements while offering active product status and continued availability.

Key Parameters

Parameter	TLUR6401 Specification
Color	Red
Lens Transparency	Diffused
Lens Style	Round with Domed Top
Lens Size	5mm, T-1 3/4
Voltage - Forward (Vf) Typical	2V
Current - Test	10mA
Viewing Angle	60°
Mounting Type	Through Hole
Wavelength - Dominant	630nm
Wavelength - Peak	640nm
Millicandela Rating	15mcd
Height (Max)	9.10mm
Package / Case	Radial
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the TLUR6401 are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Color and Wavelength: Red LEDs with dominant wavelength in the 623nm to 639nm range and peak wavelength between 635nm and 650nm
Lens Configuration: Diffused lens with round domed top geometry
Mounting Type: Through-hole radial package
Lens Size: 5mm or T-1 3/4 form factor
Forward Voltage: 1.9V to 2V operating range
Test Current: 10mA to 20mA
Viewing Angle: 30° to 60° acceptable range
Compliance: ROHS3 compliant with MSL 1 rating

Substitutes are selected from manufacturers with active product status (Vishay, Everlight, Dialight, Broadcom) to ensure long-term availability and supply chain continuity.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Color	Vf (Typ)	Current - Test	Wavelength - Dominant	Millicandela Rating	Viewing Angle	Height (Max)	Product Status	Packaging
TLUR6401	Vishay Semiconductor Opto Division	Red	2V	10mA	630nm	15mcd	60°	9.10mm	Obsolete	Radial
TLUR5401	Vishay Semiconductor Opto Division	Red	2V	10mA	630nm	15mcd	60°	12.80mm	Active	Radial
1383SDRD/S530-A3	Everlight Electronics Co Ltd	Red	2V	20mA	639nm	320mcd	30°	8.90mm	Active	Radial
333-2SDRD/S530-A3	Everlight Electronics Co Ltd	Red	2V	20mA	639nm	160mcd	30°	8.90mm	Active	Radial
5219240F	Dialight	Red	—	10mA	—	6.3mcd	—	8.94mm	Active	Radial
5219480F	Dialight	Red	—	—	626nm	—	—	—	Active	Radial
5219672F	Dialight	Red	2V	20mA	623nm	60mcd	60°	8.21mm	Active	Radial
HLMP-3301-D0001	Broadcom Limited	Red	1.9V	10mA	626nm	2.1mcd	60°	9.19mm	Active	Radial
HLMP-3301-F0001	Broadcom Limited	Red	1.9V	10mA	626nm	5.4mcd	60°	9.19mm	Active	Radial
HLMP-3301-F00DD	Broadcom Limited	Red	1.9V	10mA	626nm	5.4mcd	60°	9.19mm	Active	Radial
HLMP-3351	Broadcom Limited	Red	1.9V	10mA	626nm	5.4mcd	50°	6.35mm	Active	Radial

Engineering Selection Recommendations

Primary Recommendation: TLUR5401

The TLUR5401 from Vishay Semiconductor Opto Division is the direct functional equivalent to the TLUR6401. Both parts share identical electrical specifications (2V forward voltage, 10mA test current, 630nm dominant wavelength, 15mcd brightness). The TLUR5401 maintains active product status with 5204 units in stock, ensuring supply continuity. The height difference (12.80mm vs. 9.10mm) must be verified against PCB layout constraints before selection.

Secondary Recommendations by Application:

For applications requiring higher brightness output, the Dialight 5219672F offers 60mcd at 2V with 60° viewing angle and active status. The Everlight 333-2SDRD/S530-A3 provides 160mcd brightness but operates at 20mA test current and 30° viewing angle, requiring circuit redesign consideration.

For space-constrained designs, the Broadcom HLMP-3351 offers the lowest profile (6.35mm height) with 1.9V forward voltage and active product status. The HLMP-3301-F00DD variant provides the highest inventory availability (43,381 units) in cut tape packaging.

All recommended substitutes maintain ROHS3 compliance and MSL 1 moisture sensitivity rating consistent with the original TLUR6401 specification.

Frequently Asked Questions (FAQ)

Q: Can TLUR5401 be used as a direct replacement for TLUR6401?

A: Yes. The TLUR5401 is electrically and optically identical to the TLUR6401 with matching 2V forward voltage, 10mA test current, 630nm wavelength, and 15mcd brightness. The primary difference is height (12.80mm vs. 9.10mm), which must be verified against PCB clearance requirements.

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

A: The HLMP-3301-D0001, HLMP-3301-F0001, and HLMP-3301-F00DD share identical electrical specifications (1.9V, 10mA, 626nm, 5.4mcd) but differ in packaging: D0001 is tape and reel, F0001 is tape and reel, and F00DD is cut tape. The F00DD variant has significantly higher inventory (43,381 units).

Q: Are Everlight parts compatible with the TLUR6401?

A: Everlight parts 1383SDRD/S530-A3 and 333-2SDRD/S530-A3 are mechanically compatible but operate at 20mA test current versus the original 10mA. Circuit current-limiting resistor values must be recalculated. Brightness ratings are substantially higher (320mcd and 160mcd respectively), and viewing angle is narrower (30° vs. 60°).

Q: What is the significance of the 1.9V forward voltage in Broadcom parts?

A: Broadcom HLMP-3301 and HLMP-3351 series operate at 1.9V versus the TLUR6401's 2V. This 0.1V difference is within typical LED tolerance ranges and requires minimal circuit adjustment. Verify that existing current-limiting resistor values remain appropriate for the lower voltage drop.

Q: Which substitute offers the best long-term availability?

A: The Broadcom HLMP-3301-F00DD provides the highest inventory level (43,381 units) with active product status and cut tape packaging suitable for automated assembly. The Vishay TLUR5401 offers 5204 units with identical electrical specifications.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 moisture sensitivity rating, consistent with the original TLUR6401 specification and suitable for equivalent environmental applications.

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