CAY16-221J4AS Equivalent & Substitute Parts

Part Overview

The CAY16-221J4AS is a 220 Ohm isolated 4-resistor network array manufactured by Bourns Inc. in a 1206 (3216 Metric) surface mount package. This component features 63mW power per element, ±5% tolerance, and ±200ppm/°C temperature coefficient across an operating range of -55°C to 125°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

CAY16-221J4AS

Bourns Inc.In Stock: 1213CAY16-221J4AS Datasheet

Current PartRFQ

CAY16A-221J4AS

Bourns Inc.In Stock: 987CAY16A-221J4AS Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CAY16-221J4AS is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications for resistance value, tolerance, number of resistor elements, circuit topology, power rating per element, temperature coefficient, pin count, package dimensions, and thermal operating range. The CAY16A-221J4AS qualifies as a direct substitute because it matches all these parameters exactly while offering the advantage of active product status and automotive-grade qualification under AEC-Q200.

The substitution logic is based on the following key parameters:

• Resistance: 220 Ohm (exact match required)
• Tolerance: ±5% (exact match required)
• Circuit Type: Isolated (exact match required)
• Power Per Element: 63mW (exact match required)
• Temperature Coefficient: ±200ppm/°C (exact match required)
• Package: 1206 (3216 Metric) with identical terminal configuration (exact match required)
• Pin Count: 8 (exact match required)
• Operating Temperature: -55°C to 125°C (exact match required)

Parameter Comparison

Engineering Selection Recommendations

The CAY16A-221J4AS is the direct equivalent substitute for the obsolete CAY16-221J4AS. Both components are manufactured by Bourns Inc. and share identical electrical and mechanical specifications. The substitute part offers the critical advantage of active product status, ensuring continued availability and supply chain reliability for new designs and production continuity.

The CAY16A-221J4AS carries AEC-Q200 automotive qualification, which provides additional compliance certification for applications requiring automotive-grade components. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), confirming compatibility with standard surface mount assembly processes and environmental requirements.

No performance degradation or functional compromise occurs when substituting the CAY16A-221J4AS for the CAY16-221J4AS. The parts are electrically and mechanically interchangeable across all specified parameters.

Frequently Asked Questions (FAQ)

Q: Can the CAY16A-221J4AS be used as a direct replacement for the CAY16-221J4AS in existing designs?

A: Yes. The CAY16A-221J4AS is a direct substitute with identical electrical specifications (220 Ohm, ±5% tolerance, 63mW per element, ±200ppm/°C temperature coefficient) and mechanical package (1206 surface mount, 8-pin isolated configuration). No circuit modifications or PCB layout changes are required.

Q: What is the primary difference between these two parts?

A: The CAY16-221J4AS is obsolete, while the CAY16A-221J4AS is an active product. The substitute part also includes AEC-Q200 automotive qualification. All functional and electrical parameters are identical.

Q: Are the package dimensions identical?

A: Yes. Both parts use the 1206 (3216 Metric) package with convex, long side terminals. Dimensions are 0.126" L x 0.063" W (3.20mm x 1.60mm) with a maximum seated height of 0.024" (0.60mm). PCB footprints are identical.

Q: Do both parts have the same pin configuration?

A: Yes. Both parts feature 8 pins in an isolated 4-resistor network configuration. Pin assignments and electrical connectivity are identical.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity). The CAY16A-221J4AS additionally carries AEC-Q200 automotive qualification, which does not restrict its use in non-automotive applications.

Q: Can these parts be used interchangeably in automated assembly?

A: Yes. Identical package specifications, pin counts, and surface mount characteristics ensure compatibility with standard pick-and-place equipment and reflow soldering processes.