C503B-AAS-CY0B0251 Equivalent & Substitute Parts

Part Overview

The C503B-AAS-CY0B0251 is an amber LED indicator with a 5mm round domed lens, designed for through-hole mounting applications. Manufactured by CreeLED, Inc., this component operates at 2.1V forward voltage with a 20mA test current and delivers 14680mcd luminous intensity at a 591nm dominant wavelength. The product is Active status and RoHS Compliant, making it suitable for modern electronic assemblies requiring environmental compliance.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or inventory limitations. The identified substitute maintains electrical and mechanical compatibility while offering alternative availability and stock levels.

Substiute Parts

C503B-AAS-CY0B0251

CreeLED, Inc.In Stock: 1163C503B-AAS-CY0B0251 Datasheet

Current PartRFQ

C503B-AAN-CY0B0251

CreeLED, Inc.In Stock: 15875C503B-AAN-CY0B0251 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The C503B-AAN-CY0B0251 qualifies as a direct substitute based on strict parameter matching across all critical electrical and mechanical specifications. Both parts share identical values for:

• Color (Amber)
• Lens size and style (5.00mm Round with Domed Top)
• Lens transparency (Clear)
• Forward voltage (2.1V)
• Test current (20mA)
• Luminous intensity (14680mcd)
• Dominant wavelength (591nm)
• Viewing angle (15°)
• Mounting type (Through Hole)
• Package configuration (Radial, 5mm Round)
• Compliance certifications (RoHS Compliant, REACH Unaffected)
• Moisture sensitivity (MSL 1 - Unlimited)

The substitute part is manufactured by the same supplier (CreeLED, Inc.) and maintains Active product status. The only variance is physical height (13.30mm vs. 11.30mm), which does not affect electrical performance or standard PCB mounting applications.

Parameter Comparison

Engineering Selection Recommendations

Both C503B-AAS-CY0B0251 and C503B-AAN-CY0B0251 are suitable for direct substitution in through-hole LED indicator applications. Selection between these parts should be based on:

• Availability and inventory levels (C503B-AAN-CY0B0251 currently has higher stock: 15844 Pcs vs. 1147 Pcs)
• Physical height constraints within the PCB assembly (2mm difference may be relevant for compact designs)
• Lead time requirements and supply chain considerations

Both parts maintain identical electrical performance, compliance certifications (RoHS Compliant, REACH Unaffected), and moisture sensitivity ratings. No functional degradation occurs with either selection.

Frequently Asked Questions (FAQ)

Q: Can C503B-AAN-CY0B0251 replace C503B-AAS-CY0B0251 in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent across all specified parameters. The 2mm height difference (13.30mm vs. 11.30mm) is the only variance and does not affect standard through-hole mounting or electrical operation.

Q: Are there any compliance differences between these parts?

A: No. Both parts are RoHS Compliant, REACH Unaffected, and carry identical MSL ratings (1 - Unlimited). They meet the same environmental and regulatory standards.

Q: What determines substitution eligibility for this LED category?

A: Substitution is valid when parts match across color, lens size and style, lens transparency, forward voltage, test current, luminous intensity, dominant wavelength, viewing angle, mounting type, and package configuration. Both parts satisfy all these criteria.

Q: Does the height difference affect circuit design?

A: The height variance (2mm) is a mechanical consideration only. It does not impact electrical characteristics, circuit performance, or standard PCB layout. Verify clearance in applications with height-constrained enclosures.

Q: Which part should be selected for new designs?

A: Either part is acceptable for new designs. Selection should prioritize availability, lead time, and physical height requirements specific to the application.