ERJ-1TNF3003U Equivalent & Substitute Parts

Part Overview

The ERJ-1TNF3003U is a 300 kOhms ±1% 1W thick film chip resistor in 2512 (6432 Metric) package manufactured by Panasonic Electronic Components. This part is rated for automotive applications under AEC-Q200 and operates across -55°C to 155°C. The product status is Not For New Designs, making equivalent and substitute parts necessary for ongoing production and design updates. Alternative parts with identical or enhanced specifications are available from multiple manufacturers.

Key Parameters

Parameter	Value
Resistance	300 kOhms
Tolerance	±1%
Power Rating	1W
Package / Case	2512 (6432 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the ERJ-1TNF3003U is determined by strict equivalence across the following parameters: resistance value (300 kOhms), tolerance (±1%), package type (2512), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C ~ 155°C), and AEC-Q200 automotive rating. Power rating may be equal or higher without affecting compatibility. All substitute parts listed maintain these core specifications. Parts are grouped into three categories: Direct Equivalents (identical specifications), Upgrade Parts (enhanced features or higher power ratings), and Similar Parts (core specifications met with minor feature variations).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Operating Temp	AEC-Q200	RoHS Status	Product Status
ERJ-1TNF3003U	Panasonic Electronic Components	300 kOhms	±1%	1W	2512	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Not For New Designs
ERJ-S1TF3003U	Panasonic Electronic Components	300 kOhms	±1%	1W	2512	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Active
3521300KFT	TE Connectivity Passive Product	300 kOhms	±1%	2W	2512	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Active
CRCW2512300KFKEG	Vishay Dale	300 kOhms	±1%	1W	2512	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Active
CRCW2512300KFKEH	Vishay Dale	300 kOhms	±1%	1W	2512	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Active
CRCW2512300KFKTG	Vishay Dale	300 kOhms	±1%	1W	2512	±100ppm/°C	-55°C ~ 155°C	Yes	RoHS non-compliant	Active
RMCF2512FT300K	Stackpole Electronics Inc	300 kOhms	±1%	1W	2512	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Active
AC2512FK-07300KL	YAGEO	300 kOhms	±1%	1W	2512	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Active
CRCW2512300KFKEGHP	Vishay Dale	300 kOhms	±1%	1.5W	2512	±100ppm/°C	-55°C ~ 155°C	Yes	ROHS3 Compliant	Active
RC2512FK-07300KL	YAGEO	300 kOhms	±1%	1W	2512	±100ppm/°C	-55°C ~ 155°C	No	ROHS3 Compliant	Active
RC6432F304CS	Samsung Electro-Mechanics	300 kOhms	±1%	1W	2512	±100ppm/°C	-55°C ~ 155°C	No	ROHS3 Compliant	Active

Engineering Selection Recommendations

For new designs and ongoing production, ERJ-S1TF3003U from Panasonic is the primary upgrade path, offering Active product status with identical electrical specifications and added anti-sulfur protection. This part maintains full compatibility with the original ERJ-1TNF3003U footprint and performance envelope.

For applications requiring higher power dissipation capability, 3521300KFT from TE Connectivity provides 2W rating while maintaining all other core specifications and AEC-Q200 compliance.

Direct equivalents with Active status include CRCW2512300KFKEG and CRCW2512300KFKEH from Vishay Dale, RMCF2512FT300K from Stackpole Electronics, and AC2512FK-07300KL from YAGEO. All are ROHS3 compliant and suitable for automotive applications.

CRCW2512300KFKEGHP from Vishay Dale offers pulse withstanding capability at 1.5W, providing enhanced transient performance for applications subject to voltage spikes.

CRCW2512300KFKTG from Vishay Dale is available but carries RoHS non-compliance and REACH Affected status, limiting use in regulated markets.

RC2512FK-07300KL and RC6432F304CS lack explicit AEC-Q200 certification in provided specifications, though both maintain core electrical parameters and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can ERJ-S1TF3003U directly replace ERJ-1TNF3003U?

A: Yes. ERJ-S1TF3003U is a direct functional equivalent with identical resistance, tolerance, power rating, package, and operating temperature range. The anti-sulfur feature is an enhancement that does not affect compatibility. Both parts are 2512 package with ±1% tolerance and 1W rating.

Q: What is the difference between 1W and 2W rated parts?

A: Power rating indicates maximum continuous power dissipation capability. A 2W part (3521300KFT) can dissipate twice the power of a 1W part without exceeding temperature limits. In circuits where the 1W ERJ-1TNF3003U operates within its power budget, a 2W substitute is compatible and provides thermal margin. The 2W part is physically similar but may have slightly different dimensions.

Q: Are all listed parts automotive qualified?

A: Most listed parts carry AEC-Q200 certification. RC2512FK-07300KL and RC6432F304CS do not show explicit AEC-Q200 rating in provided specifications, though both meet core electrical requirements. For automotive applications requiring AEC-Q200 compliance, select from parts explicitly rated: ERJ-S1TF3003U, 3521300KFT, CRCW series, RMCF2512FT300K, or AC2512FK-07300KL.

Q: What does ROHS3 Compliant mean?

A: ROHS3 Compliant indicates the part meets Restriction of Hazardous Substances Directive 3 requirements, restricting lead and other hazardous materials. CRCW2512300KFKTG is RoHS non-compliant and REACH Affected, limiting use in regulated markets and EU applications.

Q: Can I use RC2512FK-07300KL or RC6432F304CS as direct replacements?

A: These parts meet core electrical specifications (300 kOhms, ±1%, 1W, 2512 package, -55°C to 155°C). However, they lack explicit AEC-Q200 certification in provided data. Use only if automotive qualification is not a design requirement. Both are ROHS3 compliant and suitable for industrial applications.

Q: What is the difference between CRCW2512300KFKEG and CRCW2512300KFKEH?

A: Both are Vishay Dale CRCW series 300 kOhms ±1% 1W 2512 resistors with identical electrical specifications and AEC-Q200 rating. The suffix difference (EG vs EH) indicates packaging or manufacturing variant. Both are functionally equivalent and interchangeable.

Q: Why is CRCW2512300KFKEGHP rated at 1.5W instead of 1W?

A: CRCW2512300KFKEGHP is a pulse withstanding variant (HP designation) with enhanced transient performance. The 1.5W rating reflects its higher power handling capability under pulse conditions. It is compatible with circuits designed for 1W parts and provides additional margin for transient events.

Q: Are there any dimensional differences between substitute parts?

A: All parts use 2512 (6432 Metric) package with minor dimensional variations within tolerance. Typical length ranges from 0.248" to 0.252" (6.30mm to 6.40mm), width from 0.122" to 0.126" (3.10mm to 3.20mm), and height from 0.026" to 0.028" (0.65mm to 0.70mm). These variations are within standard PCB pad tolerances and do not affect assembly or performance.

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