C503B-AAS-CY0Z0342 Equivalent & Substitute Parts

Part Overview

The C503B-AAS-CY0Z0342 is a 5mm amber LED indicator with a clear lens, designed for through-hole mounting applications. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance requirements. The part delivers 8930mcd at 20mA forward current with a 591nm dominant wavelength and 15° viewing angle. Active equivalent models from CreeLED, Inc. provide direct functional replacement with improved product status and compliance certifications.

Key Parameters

Parameter	Value
Color	Amber
Lens Size	5.00mm Dia
Lens Style	Round with Domed Top
Voltage - Forward (Vf) (Typ)	2.1V
Current - Test	20mA
Viewing Angle	15°
Mounting Type	Through Hole
Wavelength - Dominant	591nm
Package / Case	Radial
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution relationships are established based on the following criteria:

Direct Parametric Equivalents maintain identical electrical characteristics (2.1V forward voltage, 20mA test current, 591nm wavelength, 15° viewing angle) and mechanical specifications (5mm lens diameter, round domed top, through-hole radial package). These parts differ only in packaging format or minor physical dimensions that do not affect circuit performance.

Similar Parts share core electrical parameters but vary in millicandela rating or wavelength specification. These are suitable where brightness or spectral characteristics can accommodate the specified variation.

The following parameters determine substitution validity:

Forward voltage (Vf): 2.1V (fixed)
Test current: 20mA (fixed)
Lens size: 5.00mm Dia (fixed)
Mounting type: Through Hole Radial (fixed)
Viewing angle: 15° (fixed)
Color: Amber (fixed)

Parameter Comparison

Part Number	Product Status	Millicandela Rating	Wavelength - Dominant	Height (Max)	Packaging	RoHS Status	Inventory
C503B-AAS-CY0Z0342	Obsolete	8930mcd	591nm	13.30mm	-	-	719 Pcs
C503B-AAN-CY0Z0342	Active	8930mcd	591nm	11.30mm	Tape & Box (TB)	RoHS Compliant	1063 Pcs
C503B-ABS-CY0Z0342	Active	8930mcd	591nm	13.30mm	Tape & Box (TB)	RoHS Compliant	1079 Pcs
C503B-ABN-CY0Z0342	Active	8930mcd	591nm	13.20mm	Tape & Box (TB)	RoHS Compliant	901 Pcs
C503B-AAS-CA0B0342	Active	13000mcd	591nm	13.20mm	Tape & Box (TB)	RoHS Compliant	896 Pcs
C503B-AAS-CY0B0252	Active	14680mcd	591nm	13.30mm	Tape & Box (TB)	RoHS Compliant	1027 Pcs
C503B-AAS-CZ0B0342	Active	15850mcd	590nm	13.20mm	Cut Tape (CT)	ROHS3 Compliant	8519 Pcs

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance): C503B-ABS-CY0Z0342, C503B-ABN-CY0Z0342, and C503B-AAN-CY0Z0342 provide parametric equivalence with 8930mcd brightness and 591nm wavelength. All three are active products with RoHS compliance. C503B-ABS-CY0Z0342 and C503B-ABN-CY0Z0342 match the original 13.20-13.30mm height specification. C503B-AAN-CY0Z0342 features a reduced height of 11.30mm, suitable for space-constrained applications where vertical clearance is a design consideration.

For Enhanced Brightness Applications: C503B-AAS-CA0B0342 (13000mcd) and C503B-AAS-CY0B0252 (14680mcd) maintain electrical compatibility while providing increased luminous intensity. C503B-AAS-CZ0B0342 delivers the highest brightness at 15850mcd with ROHS3 compliance and the largest available inventory (8519 pcs). The wavelength shift to 590nm in C503B-AAS-CZ0B0342 remains within amber specification range.

Packaging Considerations: Tape & Box (TB) packaging is standard across active equivalents. C503B-AAS-CZ0B0342 is available in Cut Tape (CT) format for automated assembly environments.

Frequently Asked Questions (FAQ)

Q: Can C503B-AAN-CY0Z0342 replace C503B-AAS-CY0Z0342 in existing PCB designs? A: Yes. Both parts share identical electrical parameters (2.1V, 20mA, 591nm, 15° viewing angle) and 5mm lens specifications. The height difference (11.30mm vs 13.30mm) must be verified against PCB clearance requirements and mechanical constraints.

Q: What is the difference between C503B-ABS-CY0Z0342 and C503B-ABN-CY0Z0342? A: Both are parametric equivalents with 8930mcd brightness and identical electrical characteristics. The difference lies in internal construction (indicated by the "BS" vs "BN" designation), but electrical performance and mechanical dimensions are equivalent for circuit design purposes.

Q: Are the higher brightness parts (13000mcd, 14680mcd, 15850mcd) direct substitutes? A: These parts maintain the same forward voltage (2.1V), test current (20mA), and viewing angle (15°), making them electrically compatible. However, increased brightness may affect circuit behavior in applications with automatic brightness control or where specific luminous intensity is critical to system function.

Q: What is the wavelength difference between 591nm and 590nm? A: Both wavelengths fall within the amber LED specification range. The 1nm difference in C503B-AAS-CZ0B0342 is not perceptible to human vision and does not affect functional compatibility in indicator applications.

Q: Which substitute part has the best availability? A: C503B-AAS-CZ0B0342 has the highest inventory at 8519 pcs. For direct parametric equivalents, C503B-ABS-CY0Z0342 and C503B-AAN-CY0Z0342 each have over 1000 pcs in stock.

Q: Are all active substitute parts RoHS compliant? A: Yes. All active equivalents carry RoHS Compliant or ROHS3 Compliant certification. The obsolete original part (C503B-AAS-CY0Z0342) does not list RoHS status.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message