ERJT14J4R3U Panasonic Resistor (Other) In Stock
ERJT14J4R3U is a Panasonic ERJT14 thick-film SMD resistor in a 1210 case with 4.3 Ω resistance, ±5% tolerance, 0.5 W power rating, and -100 to +600 ppm/°C TCR. Available from stock worldwide with competitive pricing and fast shipping.
- Manufacturer
- Panasonic
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ERJT14J4R3U Datasheet PDF
- Category
- Resistor
- Price
- From $0.0610(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 ERJT14J4R3U?
- 4.3 Ω low-resistance value optimised for inrush current limiting, snubber networks, and low-side current sensing
- 0.5 W power rating in 1210 (3.2 mm × 2.5 mm) SMD package handles up to ~341 mA continuous without overheating
- Asymmetric -100 to +600 ppm/°C TCR — important consideration for precision current-sense accuracy across temperature
- RoHS and REACH compliant (JESD-609 e3, Pb-free) supporting global environmental regulations
- Panasonic ERJT14 series with 12-year lifecycle ensures long-term supply availability for production continuity
What is ERJT14J4R3U used for?
The ERJT14J4R3U serves as an inrush current limiter, RC snubber resistor, and low-value sense resistor in power supplies, motor drive circuits, and battery management systems. At 4.3 Ω and 0.5 W, it can handle surge currents during capacitor charge-up or switching transients while providing a measurable voltage drop for analog current monitoring. The 1210 SMT package suits automated assembly lines and offers better thermal dissipation than smaller 1206 or 0805 alternatives.
What are the specifications of ERJT14J4R3U?
| Pbfree Code | Yes |
| 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 | 2.5mm |
| Packing Method | TR, EMBOSSED, 7 INCH |
| Rated Power Dissipation (P) | 0.5W |
| Rated Temperature | 70°C |
| Reference Standard | AEC-Q200, IEC60115-8 |
| Resistance | 4.3Ω |
| Resistor Type | FIXED RESISTOR |
| Size Code | 1210 |
| Surface Mount | YES |
| Technology | METAL GLAZE/THICK FILM |
| Temperature Coefficient | -100,600 ppm/°C |
| Terminal Finish | TIN |
| Terminal Shape | WRAPAROUND |
| Tolerance | 5% |
| Working Voltage | 200V |
| Package | Other |
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 ERJT14J4R3U datasheet?
ERJT14J4R3U Datasheet DownloadOfficial datasheet from Panasonic
What are equivalent replacements for ERJT14J4R3U?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What maximum continuous current can ERJT14J4R3U safely handle given its 0.5 W and 4.3 Ω ratings?
The ERJT14J4R3U can continuously pass up to approximately 341 mA before reaching its 0.5 W thermal limit (I = sqrt(0.5 / 4.3)), producing a voltage drop of about 1.47 V — useful for low-side analog current sensing in motor control and battery protection circuits.
How does the asymmetric -100 to +600 ppm/°C TCR of ERJT14J4R3U impact current-sensing precision over an industrial temperature range?
Over a -40 °C to +125 °C industrial range, the +600 ppm/°C upward drift can shift the 4.3 Ω nominal value by up to +2.58 Ω at high temperatures, introducing a corresponding overestimation in sensed current; calibration or compensation is advisable if current measurement accuracy better than 10% is required across the full range.
When is ERJT14J4R3U a better choice than a 1206 package resistor of the same 4.3 Ω value for snubber applications?
The 1210 package dissipates 0.5 W versus 0.33 W for the 1206, providing 52% more power headroom for repetitive switching transients; in MOSFET drain snubbers at switching frequencies above 50 kHz where RC discharge energy accumulates, the 1210's larger copper pad (3.2 mm × 2.5 mm) spreads heat more effectively, reducing component temperature rise and prolonging board lifetime.
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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+ | $0.0700 | $3.50 |
| 250+ | $0.0630 | $15.75 |
| 500+ | $0.0610 | $30.50 |
In Stock · 24h Response · Worldwide Shipping
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