ERJ-S1TF5111U Equivalent & Substitute Parts

Part Overview

The ERJ-S1TF5111U is a 5.11 kOhms ±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. The part is currently active in production with anti-sulfur coating for enhanced reliability in harsh environments. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and automotive certifications align with the original component requirements.

Substiute Parts

ERJ-S1TF5111U

Panasonic Electronic ComponentsIn Stock: 1199ERJ-S1TF5111U Datasheet

Current PartRFQ

CRCW25125K11FKEG

Vishay DaleIn Stock: 25193CRCW25125K11FKEG Datasheet

SimilarRFQ

RMCF2512FT5K11

Stackpole Electronics IncIn Stock: 6903RMCF2512FT5K11 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ERJ-S1TF5111U are qualified based on the following criteria:

Electrical Parameters: Resistance value (5.11 kOhms), tolerance (±1%), power rating (1W), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C) must be identical.

Mechanical Parameters: Package type (2512 / 6432 Metric), composition (thick film), and number of terminations (2) must match.

Compliance & Certifications: AEC-Q200 automotive qualification, ROHS3 compliance, and REACH unaffected status are required for substitution eligibility.

Packaging Format: Both tape & reel (TR) and cut tape (CT) formats are acceptable for equivalent substitution, as they represent the same component in different supply configurations.

The following parts meet all substitution criteria for the ERJ-S1TF5111U:

• CRCW25125K11FKEG (Vishay Dale)
• RMCF2512FT5K11 (Stackpole Electronics Inc)

Parameter Comparison

Engineering Selection Recommendations

All three components—ERJ-S1TF5111U, CRCW25125K11FKEG, and RMCF2512FT5K11—are functionally equivalent for automotive applications. Selection between these parts should be based on:

Availability: Current inventory levels vary by manufacturer. CRCW25125K11FKEG (Vishay Dale) has the highest stock at 25,100 pieces, followed by RMCF2512FT5K11 (Stackpole) at 6,828 pieces, and ERJ-S1TF5111U (Panasonic) at 1,169 pieces.

Packaging Format: ERJ-S1TF5111U and RMCF2512FT5K11 are supplied in tape & reel (TR) format. CRCW25125K11FKEG is available in cut tape (CT) and Digi-Reel® format. Choose based on assembly line requirements.

Compliance Status: All parts maintain active product status, ROHS3 compliance, and REACH unaffected designation, ensuring regulatory compatibility across automotive supply chains.

Physical Dimensions: Minor variations exist in length and width within tolerance. ERJ-S1TF5111U measures 0.252" L × 0.126" W (6.40mm × 3.20mm), while CRCW25125K11FKEG and RMCF2512FT5K11 measure 0.248" L × 0.124" W to 0.126" W (6.30mm × 3.15mm to 3.20mm). All maintain identical height of 0.028" (0.70mm) and are mechanically interchangeable in 2512 footprints.

Frequently Asked Questions (FAQ)

Q: Can CRCW25125K11FKEG replace ERJ-S1TF5111U in automotive applications?

A: Yes. Both components share identical electrical specifications (5.11 kOhms ±1%, 1W), operate across the same temperature range (-55°C ~ 155°C), carry AEC-Q200 qualification, and comply with ROHS3 and REACH requirements. The primary difference is packaging format (cut tape vs. tape & reel) and minor dimensional variations within acceptable tolerances.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by resistance value, tolerance, power rating, temperature coefficient, operating temperature range, package type (2512), composition (thick film), AEC-Q200 certification, and compliance status (ROHS3, REACH). All three parts meet these criteria identically.

Q: Are there any mechanical compatibility concerns when switching between these parts?

A: No. All three components use the 2512 (6432 Metric) package with identical height (0.70mm maximum) and two terminations. Length and width variations (6.30mm to 6.40mm length, 3.15mm to 3.20mm width) fall within standard PCB footprint tolerances for 2512 components and do not affect mechanical fit or soldering.

Q: Does the anti-sulfur coating on the ERJ-S1TF5111U affect substitution decisions?

A: The anti-sulfur feature is specific to the Panasonic ERJ-S1TF5111U and is not listed for the Vishay Dale or Stackpole equivalents. If anti-sulfur coating is a design requirement, the ERJ-S1TF5111U must be used. Otherwise, all three parts are electrically and mechanically equivalent for standard automotive applications.

Q: Which packaging format should be selected for high-volume production?

A: Tape & reel (TR) format is standard for automated assembly lines. Both ERJ-S1TF5111U and RMCF2512FT5K11 are supplied in TR format. CRCW25125K11FKEG is available in cut tape (CT) and Digi-Reel® format, which may require different handling equipment. Confirm assembly line compatibility before selection.