TLHR4201 Equivalent & Substitute Parts

Part Overview

The TLHR4201 is a red LED indicator from Vishay Semiconductor Opto Division, designed for through-hole applications with a 3mm T-1 package. This component features a 619nm dominant wavelength with 10mcd brightness rating and 2V forward voltage operation. The TLHR4201 is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications. Substitute parts must maintain electrical compatibility across forward voltage, current ratings, and optical characteristics while offering current availability and active product status.

Substiute Parts

TLHR4201

Vishay Semiconductor Opto DivisionIn Stock: 714TLHR4201 Datasheet

Current PartRFQ

TLHR4205

Vishay Semiconductor Opto DivisionIn Stock: 5641TLHR4205 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLHR4201 is based on the following critical parameters that must remain constant or compatible:

• Color and Wavelength: Red 619nm dominant wavelength (635nm peak) is the primary optical specification
• Package and Mounting: 3mm T-1 through-hole radial package with 6.10mm maximum height
• Electrical Characteristics: 2V forward voltage and 10mA test current define circuit compatibility
• Viewing Angle: 44° viewing angle maintains optical performance in indication applications
• Compliance: ROHS3 compliance and MSL 1 rating ensure environmental and handling compatibility

The TLHR4205 qualifies as a direct substitute based on matching all critical parameters while offering improved brightness (15mcd vs 10mcd) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The TLHR4205 is the primary substitute for the obsolete TLHR4201. Both components are manufactured by Vishay Semiconductor Opto Division and share identical electrical and mechanical specifications. The TLHR4205 offers the advantage of active product status with higher inventory availability (5563 units in stock vs 633 units for the TLHR4201). The increased brightness rating (15mcd vs 10mcd) provides enhanced visibility without requiring circuit modifications, as the forward voltage and test current remain unchanged at 2V and 10mA respectively. Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with current manufacturing and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can the TLHR4205 be used as a direct replacement for the TLHR4201?

A: Yes. The TLHR4205 maintains identical forward voltage (2V), test current (10mA), package dimensions (3mm T-1, 6.10mm height), and optical wavelength (619nm dominant). No circuit modifications are required.

Q: What is the difference between the TLHR4201 and TLHR4205?

A: The primary difference is brightness rating: TLHR4205 provides 15mcd compared to TLHR4201's 10mcd. Additionally, TLHR4205 is active product status while TLHR4201 is obsolete.

Q: Are there any compatibility concerns when substituting the TLHR4205 for the TLHR4201?

A: No compatibility concerns exist. Both components share identical electrical characteristics, mounting type (through-hole radial), and compliance certifications (ROHS3, MSL 1).

Q: Does the higher brightness of the TLHR4205 affect circuit design?

A: No. The increased brightness (15mcd vs 10mcd) does not alter electrical requirements. Forward voltage and test current specifications remain constant, allowing direct substitution without circuit redesign.

Q: What is the viewing angle for both parts?

A: Both the TLHR4201 and TLHR4205 feature a 44° viewing angle, maintaining consistent optical performance in indication applications.