TDSY1160 Equivalent & Substitute Parts

Part Overview

The TDSY1160 is a yellow 7-segment LED display module manufactured by Vishay Semiconductor Opto Division. This single-character display operates at 2.4V forward voltage with a 20mA test current and features a common cathode configuration. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support, redesigns, and production continuity.

Substiute Parts

TDSY1160

Vishay Semiconductor Opto DivisionIn Stock: 1088TDSY1160 Datasheet

Current PartRFQ

HDSM-283F

Broadcom LimitedIn Stock: 3037HDSM-283F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TDSY1160 is determined by strict alignment of the following electrical and mechanical parameters:

• Display Configuration: Single-character 7-segment format with common cathode topology
• Color Specification: Yellow emission (585nm peak wavelength for TDSY1160; 591nm for substitute)
• Digit Size: 0.28" (7.00mm) character height
• Electrical Compatibility: Forward voltage within acceptable operating range (2.1V to 2.4V); test current at 20mA
• Compliance: ROHS3 compliance and REACH unaffected status required

The HDSM-283F from Broadcom Limited meets these core substitution criteria. While packaging differs (12-SMD surface mount versus through-hole), the electrical performance and functional output remain compatible for applications where form factor can be accommodated through PCB redesign.

Parameter Comparison

Engineering Selection Recommendations

The HDSM-283F qualifies as a functional substitute for the TDSY1160 based on the following engineering criteria:

• Electrical Compatibility: Forward voltage of 2.1V versus 2.4V represents a 12.5% reduction, which is within acceptable tolerance for LED display circuits. Test current remains constant at 20mA.
• Optical Performance: Peak wavelength shift from 585nm to 591nm remains within the yellow spectrum range. The HDSM-283F provides 8mcd versus 3mcd, delivering enhanced brightness for improved visibility.
• Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity.
• Product Lifecycle: The HDSM-283F is actively manufactured, providing long-term supply availability compared to the obsolete TDSY1160.
• Packaging Consideration: The HDSM-283F uses 12-SMD surface-mount packaging versus through-hole configuration. PCB redesign is required for implementation.

Frequently Asked Questions (FAQ)

Q: Can the HDSM-283F directly replace the TDSY1160 without circuit modification?

A: Direct socket replacement is not possible due to packaging differences. The TDSY1160 uses through-hole mounting while the HDSM-283F employs 12-SMD surface-mount technology. PCB layout redesign is required.

Q: What is the impact of the 0.3V forward voltage difference?

A: The HDSM-283F operates at 2.1V versus the TDSY1160's 2.4V. This 12.5% reduction is typical within LED display circuit design margins. Current-limiting resistor values may require minor adjustment to maintain 20mA test current, but the difference is generally accommodated by standard component tolerances.

Q: Does the wavelength shift from 585nm to 591nm affect color perception?

A: Both wavelengths fall within the yellow spectrum. The 6nm shift is imperceptible to human vision and maintains color consistency for display applications.

Q: Why does the HDSM-283F have lower power dissipation?

A: The HDSM-283F dissipates 65mW maximum versus 400mW for the TDSY1160. This reflects improved LED efficiency in the Broadcom design and the benefits of surface-mount technology, resulting in reduced thermal load on the PCB.

Q: Is the higher brightness of the HDSM-283F (8mcd vs. 3mcd) a concern?

A: The increased brightness is generally advantageous for visibility. If the original design relied on the lower brightness of the TDSY1160, current-limiting resistor adjustment may be necessary to match perceived brightness levels.

Q: Are there any compliance or certification differences?

A: Both components are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution.