ERJ-S1TJ270U Equivalent & Substitute Parts

Part Overview

The ERJ-S1TJ270U is a 27 Ohm ±5% 1W thick film chip resistor in 2512 (6432 Metric) package manufactured by Panasonic Electronic Components. This part features anti-sulfur coating and automotive AEC-Q200 qualification, designed for high-reliability applications in automotive and industrial environments. The part is currently in active production status with 629 units in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements mandate alternative suppliers for supply chain resilience, or when specific packaging or certification requirements necessitate component alternatives.

Substiute Parts

ERJ-S1TJ270U

Panasonic Electronic ComponentsIn Stock: 649ERJ-S1TJ270U Datasheet

Current PartRFQ

ERJ-1TYJ270U

Panasonic Electronic ComponentsIn Stock: 2812ERJ-1TYJ270U Datasheet

SimilarRFQ

352027RJT

TE Connectivity Passive ProductIn Stock: 28567352027RJT Datasheet

DirectRFQ

CRCW251227R0JNEG

Vishay DaleIn Stock: 2163CRCW251227R0JNEG Datasheet

SimilarRFQ

RMCF2512JT27R0

Stackpole Electronics IncIn Stock: 57530RMCF2512JT27R0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S1TJ270U is determined by the following critical parameters:

• Resistance value: 27 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 1W (exact match required)
• Package: 2512 (6432 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C minimum (equal or wider range acceptable)
• RoHS compliance: ROHS3 Compliant (required)
• Moisture sensitivity: MSL 1 (required)

All identified substitute parts meet these core electrical and mechanical parameters. Variations in product status, specific certifications (such as automotive AEC-Q200), and packaging format (Tape & Reel vs. Cut Tape) are noted but do not disqualify substitution eligibility when electrical and mechanical specifications align.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: ERJ-S1TJ270U (Panasonic)

The ERJ-S1TJ270U remains the optimal choice for new designs. It is in active production status, carries anti-sulfur coating for enhanced environmental protection, holds AEC-Q200 automotive qualification, and supports the full operating temperature range of -55°C to 155°C. ROHS3 compliance and MSL 1 rating ensure regulatory and manufacturing process compatibility.

Secondary Recommendation: RMCF2512JT27R0 (Stackpole Electronics Inc)

The RMCF2512JT27R0 is an active production alternative with the highest inventory availability (57430 units). It meets all electrical and mechanical specifications, carries AEC-Q200 automotive qualification, and supports the full -55°C to 155°C operating temperature range. The part is supplied in Cut Tape (CT) format rather than Tape & Reel, which may require process adjustment for automated assembly.

Tertiary Recommendation: CRCW251227R0JNEG (Vishay Dale)

The CRCW251227R0JNEG is an active production part with AEC-Q200 qualification and full temperature range support (-55°C to 155°C). Mechanical dimensions show minor variation (0.248" L x 0.124" W versus 0.252" L x 0.126" W for the primary part), remaining within 2512 package specification tolerances. This part is suitable for applications where Vishay Dale supply chain integration is preferred.

Not Recommended for New Designs: ERJ-1TYJ270U (Panasonic)

The ERJ-1TYJ270U carries a "Not For New Designs" status despite meeting all electrical and mechanical parameters. This designation indicates Panasonic's intent to phase out this part number. Use only when existing inventory must be consumed or when design legacy requirements mandate this specific part number.

Limited Suitability: 352027RJT (TE Connectivity Passive Product)

The 352027RJT meets core electrical specifications but operates only to 125°C maximum, compared to the 155°C upper limit of the primary part. This part lacks AEC-Q200 automotive certification. Selection is appropriate only for non-automotive applications or designs with maximum operating temperatures not exceeding 125°C.

Frequently Asked Questions (FAQ)

Q: Can I substitute ERJ-S1TJ270U with ERJ-1TYJ270U in a new design?

A: No. Although ERJ-1TYJ270U meets all electrical and mechanical specifications, Panasonic designates it as "Not For New Designs." This status indicates the manufacturer's commitment to discontinue the part. New designs should use ERJ-S1TJ270U or one of the active production alternatives.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging supplies components on continuous carrier tape wound on reels, optimized for high-speed automated pick-and-place assembly. Cut Tape (CT) packaging supplies components on cut segments of carrier tape, typically used for lower-volume production or manual assembly. RMCF2512JT27R0 is supplied in Cut Tape format and may require manual handling or alternative feeder systems in automated assembly lines.

Q: Why does 352027RJT have a lower maximum operating temperature?

A: The 352027RJT is specified for -55°C to 125°C operation, while the primary part and most alternatives support -55°C to 155°C. This difference reflects TE Connectivity's design and qualification parameters for this specific part number. Applications requiring operation above 125°C must use alternatives with the extended temperature range.

Q: Are all substitute parts AEC-Q200 qualified?

A: No. The 352027RJT (TE Connectivity) does not carry AEC-Q200 automotive qualification. All other alternatives—ERJ-1TYJ270U, CRCW251227R0JNEG, and RMCF2512JT27R0—are AEC-Q200 qualified. For automotive applications, select only from AEC-Q200 qualified parts.

Q: What does ROHS3 Compliant mean?

A: ROHS3 Compliant indicates the part meets Restriction of Hazardous Substances Directive 3 requirements, restricting the use of specific hazardous materials including lead, cadmium, and mercury. All listed parts are ROHS3 compliant, ensuring regulatory compliance for EU and equivalent markets.

Q: Can I use CRCW251227R0JNEG if the mechanical dimensions are slightly different?

A: Yes. The CRCW251227R0JNEG dimensions (0.248" L x 0.124" W) differ slightly from the primary part (0.252" L x 0.126" W), but both conform to the 2512 (6432 Metric) package specification. These variations fall within standard package tolerances and do not affect PCB footprint compatibility or electrical performance.

Q: What is Moisture Sensitivity Level (MSL) 1?

A: MSL 1 indicates unlimited shelf life without moisture control requirements. The part does not require special dry-pack storage or baking procedures before soldering. All listed parts carry MSL 1 rating, eliminating moisture management complexity in manufacturing and storage.