ERJ-S08F3090V Equivalent & Substitute Parts

Part Overview

The ERJ-S08F3090V is a 309 Ohm ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Panasonic Electronic Components. This part features anti-sulfur coating and automotive AEC-Q200 qualification, designed for automotive and industrial applications requiring high reliability in harsh environments. The product is currently active and available in high volume (785 pcs in stock).

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements shift to alternative manufacturers, or when supply chain optimization requires component standardization across multiple sourcing channels.

Key Parameters

Parameter	Value
Resistance	309 Ohms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S08F3090V is determined by strict equivalence across the following critical parameters:

Resistance value: 309 Ohms
Tolerance: ±1%
Power rating: 0.25W (1/4W)
Package type: 1206 (3216 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C
Termination count: 2
RoHS compliance: ROHS3 Compliant
Moisture sensitivity: MSL 1

All substitute parts listed meet these electrical and mechanical specifications. Variations in physical dimensions (length, width, height) within standard tolerances and differences in specific certifications (such as automotive AEC-Q200 qualification) do not affect functional interchangeability in applications where the core electrical parameters are the design requirement.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Product Status	RoHS	Inventory (pcs)
ERJ-S08F3090V	Panasonic	309 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Active	ROHS3	785
ERJ-8ENF3090V	Panasonic	309 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Not For New Designs	ROHS3	52002
CRCW1206309RFKEA	Vishay Dale	309 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Active	ROHS3	5954
RC1206FR-07309RL	YAGEO	309 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Active	ROHS3	12867
RMCF1206FT309R	Stackpole Electronics	309 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Active	ROHS3	4706

Engineering Selection Recommendations

For new designs, select from parts with Active product status: CRCW1206309RFKEA (Vishay Dale), RC1206FR-07309RL (YAGEO), or RMCF1206FT309R (Stackpole Electronics). These three options provide long-term availability and manufacturer support.

The ERJ-S08F3090V remains the primary choice when Panasonic sourcing is specified or when anti-sulfur coating is an explicit design requirement. The ERJ-8ENF3090V carries "Not For New Designs" status and should be used only in legacy product support or when existing inventory must be consumed.

All listed parts comply with ROHS3 regulations and carry MSL 1 rating, indicating no moisture sensitivity constraints during storage or handling. Selection between active alternatives should be based on supply chain agreements, cost structure, and manufacturer qualification requirements specific to the application.

Frequently Asked Questions (FAQ)

Q: Can ERJ-8ENF3090V be used as a direct replacement for ERJ-S08F3090V?

A: Electrically and mechanically, yes. Both parts are 309 Ohm ±1% 0.25W resistors in 1206 package with identical electrical specifications. However, ERJ-8ENF3090V is marked "Not For New Designs" by Panasonic, indicating the manufacturer is phasing out this series. Use only when existing inventory must be consumed or in legacy product maintenance.

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

A: The ERJ-S08F3090V includes anti-sulfur coating, a feature specific to Panasonic's ERJ-S08 series. The RC1206FR-07309RL (YAGEO) specifies moisture-resistant composition. Both are thick film resistors with identical electrical performance. Anti-sulfur coating provides additional protection in environments with hydrogen sulfide exposure; moisture-resistant composition addresses general humidity environments. Selection depends on specific environmental requirements.

Q: Are all substitute parts automotive-qualified?

A: ERJ-S08F3090V, ERJ-8ENF3090V, CRCW1206309RFKEA, and RMCF1206FT309R carry AEC-Q200 automotive qualification. RC1206FR-07309RL (YAGEO) does not list AEC-Q200 in the provided specifications. For automotive applications requiring AEC-Q200 certification, use only the four qualified parts.

Q: Do physical dimension variations affect interchangeability?

A: No. All parts fit the 1206 (3216 Metric) package footprint. Minor variations in length (0.122" to 0.126"), width (0.063"), and height (0.024" to 0.028") are within standard package tolerances and do not affect PCB assembly or electrical performance.

Q: Which substitute offers the best supply availability?

A: RC1206FR-07309RL (YAGEO) has the highest inventory at 12,867 pcs. ERJ-8ENF3090V (Panasonic) has 52,002 pcs but is not recommended for new designs. For active products suitable for new designs, YAGEO offers the strongest supply position.

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