ERJ-1TYJ2R4U Equivalent & Substitute Parts

Part Overview

The ERJ-1TYJ2R4U is a 2.4 Ohms ±5% 1W Chip Resistor in 2512 (6432 Metric) package manufactured by Panasonic Electronic Components. This thick film resistor is rated for automotive applications under AEC-Q200 standard with an operating temperature range of -55°C to 155°C. The part is classified as Not For New Designs, indicating it has been superseded in the product line. Equivalent and substitute parts are necessary for applications requiring continued supply, design flexibility, or performance upgrades while maintaining functional compatibility.

Substiute Parts

ERJ-1TYJ2R4U

Panasonic Electronic ComponentsIn Stock: 3756ERJ-1TYJ2R4U Datasheet

Current PartRFQ

ERJ-B1BJ2R4U

Panasonic Electronic ComponentsIn Stock: 867ERJ-B1BJ2R4U Datasheet

MFR RecommendedRFQ

ERJ-1TRQF2R4U

Panasonic Electronic ComponentsIn Stock: 18835ERJ-1TRQF2R4U Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-1TYJ2R4U is determined by the following critical parameters: resistance value (2.4 Ohms), tolerance grade (±5% or tighter), power rating (1W or higher), package compatibility (2512 or equivalent footprint), composition (thick film), automotive certification (AEC-Q200), and operating temperature range (-55°C ~ 155°C minimum). Substitute parts must maintain or exceed these specifications to ensure functional and thermal compatibility in the original application.

Two substitute parts are identified:

ERJ-B1BJ2R4U — Manufacturer-recommended substitute with increased power rating (2W) in a different package format (Wide 2010 / 5025 Metric). Suitable for applications where package footprint change is acceptable and higher power dissipation capability is beneficial.

ERJ-1TRQF2R4U — Upgrade substitute with improved tolerance (±1%) and identical package (2512). Maintains the same form factor while providing tighter resistance tolerance and enhanced current sense capability.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Package): ERJ-1TRQF2R4U is the appropriate selection when PCB layout and footprint constraints require the 2512 (6432 Metric) package. This part is in Active product status and provides improved tolerance specification (±1% versus ±5%), resulting in tighter resistance accuracy. The identical package dimensions and thermal characteristics ensure drop-in compatibility without layout modifications.

For Performance Enhancement with Package Change: ERJ-B1BJ2R4U is the manufacturer-recommended alternative when thermal management or power dissipation requirements can accommodate a different package footprint. The Wide 2010 (5025 Metric) package provides doubled power rating (2W versus 1W) and improved temperature coefficient stability (±200 ppm/°C versus -100/+600 ppm/°C). This substitution requires PCB layout revision but offers superior thermal performance.

Both substitute parts maintain full AEC-Q200 automotive compliance, ROHS3 compliance, and unlimited moisture sensitivity rating (MSL 1), ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can ERJ-1TRQF2R4U be used as a direct replacement for ERJ-1TYJ2R4U?

A: Yes. Both parts share identical package dimensions (2512 / 6432 Metric), resistance value (2.4 Ohms), power rating (1W), and operating temperature range (-55°C ~ 155°C). The ERJ-1TRQF2R4U provides tighter tolerance (±1% versus ±5%) and is in Active product status, making it a compatible upgrade.

Q: What are the footprint differences between ERJ-1TYJ2R4U and ERJ-B1BJ2R4U?

A: ERJ-1TYJ2R4U uses the 2512 (6432 Metric) package with dimensions 0.252" L x 0.126" W (6.40mm x 3.20mm). ERJ-B1BJ2R4U uses the Wide 2010 (5025 Metric) package with dimensions 0.098" L x 0.197" W (2.50mm x 5.00mm). The substitute has a smaller length but greater width, requiring PCB layout modification.

Q: Are all substitute parts AEC-Q200 certified?

A: Yes. Both ERJ-B1BJ2R4U and ERJ-1TRQF2R4U carry AEC-Q200 automotive qualification, maintaining compliance with automotive reliability standards.

Q: What is the significance of the temperature coefficient difference?

A: ERJ-1TYJ2R4U has a temperature coefficient of -100/+600 ppm/°C (asymmetrical). ERJ-1TRQF2R4U has ±100 ppm/°C and ERJ-B1BJ2R4U has ±200 ppm/°C (both symmetrical). Lower and symmetrical coefficients indicate better resistance stability across the operating temperature range, reducing resistance drift in thermal cycling applications.

Q: Can ERJ-B1BJ2R4U be used in applications with strict space constraints?

A: No. The Wide 2010 (5025 Metric) package is larger in width (5.00mm versus 3.20mm) than the original 2512 package. This substitute requires adequate PCB real estate and is not suitable for space-constrained designs.

Q: What is the inventory status of these parts?

A: ERJ-1TYJ2R4U has 3,727 pieces in stock. ERJ-B1BJ2R4U has 776 pieces in stock. ERJ-1TRQF2R4U has 18,765 pieces in stock, providing the highest availability for new orders.