ERJ-S1TF5490U Equivalent & Substitute Parts

Part Overview

The ERJ-S1TF5490U is a 549 Ohms ±1% 1W thick film chip resistor manufactured by Panasonic Electronic Components in the 2512 (6432 Metric) package. This component is designed for automotive applications and meets AEC-Q200 qualification standards with anti-sulfur protection. The part is currently in active production status with 1051 units available in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and automotive certifications align with the original component requirements.

Substiute Parts

ERJ-S1TF5490U

Panasonic Electronic ComponentsIn Stock: 1100ERJ-S1TF5490U Datasheet

Current PartRFQ

AC2512FK-07549RL

YAGEOIn Stock: 3051AC2512FK-07549RL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ERJ-S1TF5490U are qualified based on the following criteria:

• Identical resistance value: 549 Ohms
• Matching tolerance: ±1%
• Equivalent power rating: 1W
• Compatible package: 2512 (6432 Metric)
• Matching composition: Thick Film
• Identical temperature coefficient: ±100ppm/°C
• Overlapping operating temperature range: -55°C ~ 155°C
• Automotive qualification: AEC-Q200
• Equivalent RoHS compliance: ROHS3 Compliant
• Matching moisture sensitivity: MSL 1 (Unlimited)

The AC2512FK-07549RL from YAGEO meets all these criteria and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

Both the ERJ-S1TF5490U and AC2512FK-07549RL are active production components with identical electrical and mechanical specifications. Both components carry AEC-Q200 automotive qualification and ROHS3 compliance, making them suitable for automotive applications requiring equivalent performance. The AC2512FK-07549RL from YAGEO provides higher inventory availability (3031 units) compared to the Panasonic ERJ-S1TF5490U (1051 units). Physical dimensions show minor variations within acceptable tolerances: the YAGEO part measures 0.250" L x 0.122" W with 0.026" maximum seated height, while the Panasonic part measures 0.252" L x 0.126" W with 0.028" maximum seated height. These dimensional differences remain within standard PCB layout tolerances for 2512 package footprints.

Frequently Asked Questions (FAQ)

Q: Can AC2512FK-07549RL replace ERJ-S1TF5490U in automotive applications?

A: Yes. Both components meet AEC-Q200 qualification, share identical electrical specifications (549 Ohms ±1%, 1W, ±100ppm/°C), and operate across the same temperature range (-55°C ~ 155°C). Both are ROHS3 compliant with MSL 1 rating.

Q: Are there physical compatibility concerns between these parts?

A: Both components use the 2512 (6432 Metric) package with two terminations. Dimensional variations are minor: Panasonic measures 6.40mm x 3.20mm x 0.70mm maximum height; YAGEO measures 6.35mm x 3.10mm x 0.65mm maximum height. These differences fall within standard PCB design tolerances for this package class.

Q: What is the difference between anti-sulfur and moisture-resistant features?

A: The ERJ-S1TF5490U includes anti-sulfur protection as a specified feature. The AC2512FK-07549RL specifies moisture-resistant thick film composition. Both are thick film resistors with MSL 1 rating and operate identically within the specified temperature and humidity parameters.

Q: Are both parts available in the same packaging format?

A: Yes. Both ERJ-S1TF5490U and AC2512FK-07549RL are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.

Q: Which part should be selected for new designs?

A: Selection depends on supply chain requirements and inventory availability. Both components are active production parts with equivalent performance. The AC2512FK-07549RL currently has higher stock availability (3031 units versus 1051 units).