TLWR9900 Equivalent & Substitute Parts

Part Overview

The TLWR9900 is a red LED indicator in 4-DIP through-hole packaging manufactured by Vishay Semiconductor Opto Division as part of the TELUX™ series. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing production and maintenance applications. The TLWR9900 delivers red light indication at 615nm dominant wavelength with 2.2V forward voltage and 70mA test current in a compact 4-DIP (0.200", 5.08mm) package. Substitute parts must maintain electrical compatibility and mechanical interchangeability for direct board-level replacement.

Substiute Parts

TLWR9900

Vishay Semiconductor Opto DivisionIn Stock: 1175TLWR9900 Datasheet

Current PartRFQ

TLWR7900

Vishay Semiconductor Opto DivisionIn Stock: 3153TLWR7900 Datasheet

Parametric EquivalentRFQ

TLWR8900

Vishay Semiconductor Opto DivisionIn Stock: 2548TLWR8900 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TLWR9900 are qualified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution eligibility:

Critical Parameters for Substitution:

• Forward voltage (Vf): 2.2V (exact match required)
• Test current: 70mA (exact match required)
• Package type: 4-DIP (0.200", 5.08mm) (exact match required)
• Mounting type: Through Hole (exact match required)
• Physical dimensions: 7.62mm L x 7.62mm W, 6.40mm height max (exact match required)
• Color: Red (exact match required)
• Viewing angle: 90° (exact match required)
• Compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

Allowable Variation:

• Wavelength - Dominant: 615nm to 618nm (within red spectrum for this product category)
• Wavelength - Peak: 624nm (consistent across all qualified substitutes)
• Product Status: Active substitutes preferred for obsolete main part

Both TLWR7900 and TLWR8900 meet all substitution criteria and are qualified as parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

Both TLWR7900 and TLWR8900 are qualified substitutes for the obsolete TLWR9900. Selection between the two active alternatives is based on the following factors:

TLWR7900 Selection Criteria:

• Dominant wavelength of 618nm provides a slightly longer wavelength within the red spectrum
• Active product status with 3061 units in stock
• Suitable for applications where the specific 618nm wavelength is acceptable

TLWR8900 Selection Criteria:

• Dominant wavelength of 615nm matches the original TLWR9900 specification exactly
• Active product status with 2538 units in stock
• Recommended for direct replacement where wavelength matching is critical

Both substitutes maintain full compliance with ROHS3 and REACH requirements. The choice between TLWR7900 and TLWR8900 depends on wavelength specification requirements for the target application. For applications requiring exact wavelength matching to the original TLWR9900, TLWR8900 is the preferred substitute.

Frequently Asked Questions (FAQ)

Q: Can TLWR7900 and TLWR8900 be used interchangeably with TLWR9900?

A: Both TLWR7900 and TLWR8900 are parametric equivalents meeting all electrical and mechanical specifications for the TLWR9900. The primary difference is the dominant wavelength: TLWR7900 operates at 618nm while TLWR8900 operates at 615nm (matching the original). Both are qualified substitutes for through-hole PCB applications using 4-DIP packaging.

Q: What is the difference between TLWR7900 and TLWR8900?

A: The only parameter difference is the dominant wavelength. TLWR7900 emits at 618nm, while TLWR8900 emits at 615nm. Both share identical forward voltage (2.2V), test current (70mA), package dimensions, and compliance certifications. Selection depends on whether the application requires the specific 615nm wavelength or can accept the 618nm variant.

Q: Are these substitutes compatible with existing PCB layouts designed for TLWR9900?

A: Yes. All three parts share identical 4-DIP (0.200", 5.08mm) packaging, through-hole mounting type, and physical dimensions (7.62mm L x 7.62mm W, 6.40mm max height). Direct board-level replacement is possible without layout modifications.

Q: What is the inventory status for substitute parts?

A: TLWR7900 has 3061 units in stock and TLWR8900 has 2538 units in stock. Both are active products with established supply availability, unlike the obsolete TLWR9900.

Q: Do the substitute parts meet the same compliance requirements as TLWR9900?

A: Yes. Both TLWR7900 and TLWR8900 are ROHS3 Compliant and REACH Unaffected, matching the compliance profile of the original TLWR9900. Moisture sensitivity level is 1 (Unlimited) for all three parts.

Q: Which substitute should be selected for new designs?

A: For new designs, either TLWR7900 or TLWR8900 can be used based on wavelength requirements. TLWR8900 is recommended if exact 615nm wavelength matching is required. TLWR7900 is acceptable if the application permits 618nm wavelength operation within the red spectrum.