Is there a pin-compatible replacement for 4D03WGF499JT5E?

No candidates have been verified as pin-to-pin compatible without engineering review. While parts like 4D03WGF470JT5E share the same package, they have different resistance values. Always verify the datasheet for pinout and land pattern compatibility.

What risks should I check before replacing 4D03WGF499JT5E?

Key risks include package mismatch, which requires a new PCB layout, and parametric differences like resistance (e.g., 47Ω vs 49.9Ω) or tolerance (e.g., 5% vs 1%). These can affect circuit performance and require careful analysis.

4D03WGF499JT5E Alternatives, Datasheet & Cross Reference | UNI-ROYAL

The UNI-ROYAL 4D03WGF499JT5E is a 4-element, 49.9Ω, 1% tolerance resistor array in a 4D03 package. Finding a direct replacement requires matching the package, pinout, and electrical characteristics.

AI replacement insight

Package riskhigh

Several candidates are in different packages, requiring a PCB redesign.

Electrical riskmedium

Some same-package options have different resistance or much looser tolerance.

Can it be replaced directly?

No direct, drop-in replacement has been identified. All candidates have parametric or package differences that require engineering review.

Best replacement path

Prioritize candidates in the same 4D03 package, like 4D03WGF470JT5E, but verify the impact of the 47Ω resistance. If a PCB redesign is possible, 4D02WGF499JTCE offers identical electricals in a smaller package.

Main risk

The primary risk is package incompatibility, preventing a drop-in replacement. The secondary risk is parametric deviation in resistance and tolerance.

Recommended alternatives

Functionally similar with identical electrical specs but in a smaller package requiring PCB redesign.

View details

Alternative comparison matrix

Feature / factor	4D03WGF499JT5E	4D02WGF499JTCE	4D03WGF470JT5E	4D03WGJ0510T5E	Compatibility / risk
Package	4D03	4D02	4D03	4D03	4D02 / 4D03 — Smaller package (2.0x1.0mm vs 3.2x1.6mm), requires layout change.; 4D03WGF470JT5E: Package appears identical.; 4D03WGJ0510T5E: Package appears identical.
Resistance	49.9 Ω	49.9 Ω	47 Ω	51 Ω	49.9 Ω / 47 Ω / 51 Ω — matched; 4D03WGF470JT5E: Resistance is ~6% lower.; 4D03WGJ0510T5E: Resistance is ~2% higher.
Tolerance	±1%	±1%	±1%	±5%	±1% / ±5% — matched; 4D03WGF470JT5E: matched; 4D03WGJ0510T5E: Significant downgrade from ±1%.
Power	1/16 W	1/16 W	1/16 W	1/16 W	1/16 W — Power per element.; 4D03WGF470JT5E: Power per element.; 4D03WGJ0510T5E: Power per element.
Pinout	8-pin	null	-	-	null — Pinout not verified, but likely compatible function for isolated array.

Application & sourcing insights

Questions & answers

The best alternatives are typically other resistor arrays in the same 4D03 package, such as 4D03WGF470JT5E, but require checking for parametric differences like resistance value. Functional alternatives in different packages exist but require a PCB layout change.