ERJT08J3R9V Panasonic Resistor (Resistor Chip) In Stock
ERJT08J3R9V is a Panasonic ERJT08 thick-film SMD resistor in a 1206 case with 3.9 Ω resistance, ±5% tolerance, 0.33 W power rating, and -100 to +600 ppm/°C TCR. Available from stock worldwide with competitive pricing.
- Manufacturer
- Panasonic
- Package
- Resistor Chip
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ERJT08J3R9V Datasheet PDF
- Category
- Resistor
- Price
- From $0.0270(MOQ 50)
- Temp Range
- -55.0°C to 155.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of ERJT08J3R9V?
- 3.9 Ω very-low resistance value ideal for current sensing, inrush limiting, and snubber applications
- 0.33 W power rating in 1206 package (3.2 mm × 1.6 mm × 0.6 mm) handles up to ~290 mA continuous current
- Asymmetric -100 to +600 ppm/°C TCR characteristic, important to note for temperature-sensitive applications
- REACH and RoHS compliant (JESD-609 e3) for global regulatory requirements
- Rectangular SMT construction enables reliable automated soldering and consistent contact integrity
What is ERJT08J3R9V used for?
The ERJT08J3R9V is designed for inrush current limiting, overcurrent sensing shunts, and RC snubber networks in power supplies, motor drivers, and battery management circuits. At 3.9 Ω and 0.33 W, it can handle brief surge currents while providing sufficient voltage drop for analog current measurement with a microcontroller ADC. The 1206 SMD package suits both prototyping and volume production on standard reflow solder lines.
What are the specifications of ERJT08J3R9V?
| Reach Compliance Code | Compliant |
| Factory Lead Time | 22Weeks |
| YTEOL | 12 |
| Construction | Rectangular |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Package Height | 0.6mm |
| Package Length | 3.2mm |
| Package Shape | RECTANGULAR PACKAGE |
| Package Style | SMT |
| Package Width | 1.6mm |
| Packing Method | TR, PUNCHED, 7 INCH |
| Rated Power Dissipation (P) | 0.33W |
| Rated Temperature | 70°C |
| Reference Standard | AEC-Q200, IEC60115-8 |
| Resistance | 3.9Ω |
| Resistor Type | FIXED RESISTOR |
| Size Code | 1206 |
| Surface Mount | YES |
| Technology | METAL GLAZE/THICK FILM |
| Temperature Coefficient | -100,600 ppm/°C |
| Terminal Finish | Tin (Sn) |
| Terminal Shape | WRAPAROUND |
| Tolerance | 5% |
| Working Voltage | 200V |
| Package | Resistor Chip |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8533.21.00.30 |
| Country of Origin | Japan |
Where can I find the ERJT08J3R9V datasheet?
ERJT08J3R9V Datasheet DownloadOfficial datasheet from Panasonic
What are equivalent replacements for ERJT08J3R9V?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What continuous current can ERJT08J3R9V handle before reaching its 0.33 W power dissipation limit?
At 3.9 Ω and 0.33 W rated power, the ERJT08J3R9V can handle up to approximately 291 mA of continuous current (I = sqrt(P/R) = sqrt(0.33/3.9)), making it suitable for inrush limiting and low-side current sensing in circuits where peak currents stay below 300 mA.
How does the asymmetric -100 to +600 ppm/°C TCR of ERJT08J3R9V affect current-sense accuracy over temperature?
The wide asymmetric TCR of -100 to +600 ppm/°C means the 3.9 Ω value can drift by up to +2.34 Ω at +125 °C relative to room temperature, introducing a proportional error in the sensed voltage; designers requiring better than 5% accuracy should either calibrate over temperature or select a lower-TCR sense resistor alternative.
In which snubber or damping topologies is a 3.9 Ω 1206 SMD resistor like ERJT08J3R9V preferred over larger package alternatives?
In RC snubber networks across MOSFET drains or diode switching nodes, a 3.9 Ω series resistance combined with a 10 nF to 100 nF capacitor provides effective ringing suppression at 1 MHz to 10 MHz; the 1206 package's 0.33 W dissipation is sufficient for these low-duty switching transients without the board-space penalty of a larger 2010 or 2512 package.
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About Panasonic
Panasonic is a leading electronic component manufacturer. FindMyChip sources Panasonic ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 50+ | $0.0300 | $1.50 |
| 1000+ | $0.0270 | $27.00 |
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