ASMB-TTB2-0C3A2 Equivalent & Substitute Parts

Part Overview

The ASMB-TTB2-0C3A2 is an RGB LED indicator in 6-SMD, J-Lead package manufactured by Broadcom Limited. This component features independent red, green, and blue channels with diffused lens transparency and a round flat-top lens style. The part is currently obsolete, making equivalent substitute parts necessary for ongoing design requirements and production continuity. The ASMB-TTB2-0C3A2 provides RGB indication capability with specified luminous intensity ratings and forward voltage characteristics suitable for discrete LED indication applications.

Substiute Parts

ASMB-TTB2-0C3A2

Broadcom LimitedIn Stock: 898ASMB-TTB2-0C3A2 Datasheet

Current PartRFQ

ASMB-TTF0-0A20B

Broadcom LimitedIn Stock: 201255ASMB-TTF0-0A20B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASMB-TTB2-0C3A2 is determined by the following critical parameters:

• RGB color configuration with independent channel control
• Diffused lens transparency for uniform light distribution
• Surface mount package compatibility (6-PLCC form factor)
• Forward voltage ratings within acceptable operating ranges for each color channel
• Test current specification of 20mA per channel
• Viewing angle tolerance for optical performance
• Physical dimensions and height constraints for PCB layout compatibility
• RoHS3 compliance and REACH unaffected status for regulatory alignment

The ASMB-TTF0-0A20B qualifies as a direct substitute based on matching these core parameters while maintaining functional equivalence in RGB LED indication applications.

Parameter Comparison

Engineering Selection Recommendations

The ASMB-TTF0-0A20B is the qualified substitute for the obsolete ASMB-TTB2-0C3A2. Selection is supported by the following factors:

• Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current manufacturing standards
• Active product status of the ASMB-TTF0-0A20B ensures long-term availability and supply chain continuity
• RGB independent channel configuration is preserved across both parts
• Forward voltage specifications remain within compatible operating ranges for all color channels
• Test current specification of 20mA is maintained
• Physical dimensions and height are compatible with existing PCB layouts, with minimal length variation (3.70mm vs 4.60mm)
• Millicandela ratings remain within acceptable tolerance ranges for RGB indication applications
• Diffused lens transparency and round flat-top lens style are consistent between parts

The higher moisture sensitivity level (MSL 5A vs MSL 4) of the substitute part requires adherence to appropriate storage and handling protocols during manufacturing.

Frequently Asked Questions (FAQ)

Q: Can the ASMB-TTF0-0A20B directly replace the ASMB-TTB2-0C3A2 in existing designs?

A: Yes. Both parts share the same RGB independent channel configuration, diffused lens transparency, surface mount mounting type, and compatible forward voltage characteristics. The 6-PLCC package of the substitute is mechanically compatible with the original 6-SMD, J-Lead package for PCB layout purposes.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete vs. active), forward voltage for green and blue channels (3V vs. 2.9V), viewing angle (115° vs. 110°), millicandela ratings (minor variations per channel), physical length (4.60mm vs. 3.70mm), and moisture sensitivity level (MSL 4 vs. MSL 5A).

Q: Are there any compliance or certification concerns with substitution?

A: No. Both parts are ROHS3 compliant and REACH unaffected, maintaining regulatory alignment for current manufacturing standards.

Q: What is the impact of the different moisture sensitivity levels?

A: The ASMB-TTF0-0A20B has MSL 5A (24 Hours) compared to MSL 4 (72 Hours) for the original part. This requires stricter moisture control during storage and handling. The substitute part must be stored in controlled humidity environments and used within the specified time window after packaging removal.

Q: Will the 0.2mm difference in length affect PCB layout?

A: The ASMB-TTF0-0A20B is 3.70mm in length versus 4.60mm for the original part. This minimal difference is typically accommodated within standard PCB design tolerances and does not require layout modifications for most applications.

Q: Are the luminous intensity ratings compatible?

A: Yes. The millicandela ratings of the substitute part remain within acceptable ranges for RGB indication applications. Red channel shows 710mcd vs. 790mcd, green shows 1840mcd vs. 2000mcd, and blue shows 410mcd vs. 380mcd. These variations are within typical tolerance ranges for LED indication circuits.