TLUR4401 Equivalent & Substitute Parts

Part Overview

The TLUR4401 is a red diffused T-1 through-hole LED manufactured by Vishay Semiconductor Opto Division, designed for indication applications. Specified at 2V forward voltage with 18mcd brightness and 630nm dominant wavelength, this component is actively produced and ROHS3 compliant. Substitute parts may be required due to inventory constraints, application-specific voltage requirements, or brightness level adjustments while maintaining mechanical and optical compatibility within the T-1 3mm form factor.

Key Parameters

Parameter	TLUR4401 Value
Manufacturer	Vishay Semiconductor Opto Division
Color	Red
Lens Size	3mm, T-1
Lens Transparency	Diffused
Mounting Type	Through Hole
Package / Case	Radial
Voltage - Forward (Vf) (Typ)	2V
Current - Test	10mA
Millicandela Rating	18mcd
Wavelength - Dominant	630nm
Viewing Angle	60°
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the TLUR4401 is determined by the following criteria:

Mandatory Compatibility Parameters:

Color: Red
Lens Size: 3mm, T-1
Lens Transparency: Diffused
Mounting Type: Through Hole
Package / Case: Radial
Product Status: Active
RoHS Status: ROHS3 Compliant

Variable Parameters (Application-Dependent):

Voltage - Forward (Vf): Acceptable range 1.7V to 12V depending on circuit design
Current - Test: 1mA to 20mA depending on application requirements
Millicandela Rating: 2mcd to 45mcd depending on brightness requirements
Wavelength - Dominant: 623nm to 640nm (red spectrum)
Viewing Angle: 40° to 60° depending on application

All substitute parts listed maintain the T-1 3mm through-hole radial configuration and are ROHS3 compliant active products. Substitution is valid when the application circuit can accommodate the forward voltage and current specifications of the alternative part.

Parameter Comparison

Part Number	Manufacturer	Vf (Typ)	Current - Test	mcd	Wavelength - Dominant	Viewing Angle	Height (Max)	Packaging
TLUR4401	Vishay	2V	10mA	18mcd	630nm	60°	6.10mm	Bulk
HLMP-1600	Broadcom Limited	5V	10mA	2.1mcd	626nm	60°	6.35mm	Bulk
HLMP-1601	Broadcom Limited	12V	13mA	2.1mcd	626nm	60°	6.35mm	Bulk
HLMP-1700	Broadcom Limited	1.7V	2mA	2.1mcd	626nm	50°	6.35mm	Bulk
HLMP-1700-B0002	Broadcom Limited	1.7V	2mA	2.1mcd	626nm	50°	6.35mm	Cut Tape (CT)
HLMP-K101	Broadcom Limited	1.8V	20mA	45mcd	637nm	60°	6.35mm	Bulk
HLMP-K150	Broadcom Limited	1.7V	1mA	2mcd	640nm	60°	6.35mm	Bulk
HLMP-K150-C0002	Broadcom Limited	1.7V	1mA	2mcd	640nm	60°	6.35mm	Cut Tape (CT)
LTL-1CHE	Lite-On Inc.	2V	20mA	12.6mcd	623nm	60°	5.20mm	Bulk
LTL-4211	Lite-On Inc.	2.1V	10mA	2.5mcd	657nm	40°	6.55mm	Bulk
LTL-4211N	Lite-On Inc.	2.1V	10mA	4.4mcd	657nm	60°	5.85mm	Bulk

Engineering Selection Recommendations

Voltage-Matched Substitutes (1.7V to 2.1V Range): HLMP-1700, HLMP-1700-B0002, HLMP-K101, HLMP-K150, HLMP-K150-C0002, LTL-1CHE, LTL-4211, and LTL-4211N operate within or near the TLUR4401 forward voltage specification. These parts are suitable for direct substitution in circuits designed for low-voltage LED indication. HLMP-K101 provides the highest brightness (45mcd) in this voltage range. LTL-1CHE matches the 2V specification exactly with 12.6mcd output.

Higher Voltage Substitutes (5V to 12V Range): HLMP-1600 and HLMP-1601 require circuit redesign to accommodate 5V and 12V forward voltages respectively. These parts are suitable only when the application circuit is modified to supply the required voltage levels.

Brightness Considerations: The TLUR4401 operates at 18mcd. HLMP-K101 (45mcd) provides increased brightness for applications requiring higher visibility. HLMP-K150, HLMP-1700, and HLMP-1600 provide reduced brightness (1mcd to 2.1mcd) suitable for low-intensity indication applications.

Compliance and Availability: All listed substitute parts maintain ROHS3 compliance and active product status. Packaging options include Bulk and Cut Tape (CT) formats. Inventory levels vary; refer to current stock status for procurement planning.

Frequently Asked Questions (FAQ)

Q: Can HLMP-1600 directly replace TLUR4401 in an existing circuit? A: No. HLMP-1600 requires 5V forward voltage compared to TLUR4401's 2V specification. Circuit redesign is necessary to supply the higher voltage. Direct substitution without circuit modification will result in component failure or non-operation.

Q: What is the difference between HLMP-1700 and HLMP-1700-B0002? A: Both parts are electrically identical with 1.7V forward voltage and 2.1mcd brightness. The difference is packaging: HLMP-1700 is supplied in Bulk format, while HLMP-1700-B0002 is supplied in Cut Tape (CT) format. Electrical performance and mechanical dimensions are identical.

Q: Is LTL-4211 compatible with LTL-4211N? A: Both parts share identical electrical specifications (2.1V, 10mA, 657nm wavelength) but differ in viewing angle and brightness. LTL-4211 provides 40° viewing angle with 2.5mcd, while LTL-4211N provides 60° viewing angle with 4.4mcd. Selection depends on application viewing angle requirements.

Q: Why does HLMP-K101 have higher brightness (45mcd) than TLUR4401 (18mcd)? A: HLMP-K101 is designed for higher-intensity indication applications. The increased brightness results from optimized LED die and lens design. Use HLMP-K101 only when the application requires increased visibility; excessive brightness may cause glare or require current limiting adjustments.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the TLUR4401 environmental and regulatory requirements.

Q: What is the mechanical compatibility of substitute parts with TLUR4401? A: All substitute parts maintain the 3mm T-1 through-hole radial package configuration. Height variations exist (5.20mm to 6.55mm maximum); verify PCB clearance for applications with tight vertical spacing constraints.

Q: Can I use HLMP-K150 (1mA test current) in a circuit designed for TLUR4401 (10mA test current)? A: Yes, if the circuit can operate at reduced brightness. HLMP-K150 operates at 1mA test current with 2mcd output, suitable for low-power indication applications. Verify that the reduced brightness meets application visibility requirements.

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