ERJT14J122U Panasonic Resistor (Other) In Stock
Panasonic ERJT14J122U is a thick film surface mount resistor in a 1210 package with 1.2kΩ ±5% tolerance, 0.5W power rating, and ±200ppm/°C temperature coefficient. Available in stock with worldwide shipping.
- Manufacturer
- Panasonic
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ERJT14J122U Datasheet PDF
- Category
- Resistor
- Price
- From $0.0374(MOQ 10)
- 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 ERJT14J122U?
- 1.2kΩ resistance with ±5% tolerance suitable for LED current limiting and voltage divider networks
- 0.5W power rating — higher than 1206 alternatives — for demanding SMD power applications
- ±200ppm/°C temperature coefficient providing stable resistance across wide operating temperatures
- 1210 SMD package (3.2mm × 2.5mm × 0.6mm) with larger pad area for improved thermal dissipation
- RoHS compliant and Pb-free per JESD-609 e3 for global environmental regulatory compliance
What is ERJT14J122U used for?
The ERJT14J122U is widely used as a current-limiting resistor for high-brightness LEDs, base biasing resistors in transistor amplifier stages, and feedback or gain-setting resistors in op-amp circuits requiring 1.2kΩ. Its 1210 package and 0.5W power rating enable it to handle sustained power levels in industrial motor control panels, power supply feedback networks, and automotive interior lighting drivers. The Pb-free, RoHS-compliant construction satisfies stringent environmental standards for consumer electronics and automotive OEM supplier requirements.
What are the specifications of ERJT14J122U?
| 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 | 1200Ω |
| Resistor Type | FIXED RESISTOR |
| Size Code | 1210 |
| Surface Mount | YES |
| Technology | METAL GLAZE/THICK FILM |
| Temperature Coefficient | 200ppm/°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 ERJT14J122U datasheet?
ERJT14J122U Datasheet DownloadOfficial datasheet from Panasonic
What are equivalent replacements for ERJT14J122U?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
At what LED current does the ERJT14J122U 1.2kΩ resistor operate within its 0.5W power rating?
With a 1.2kΩ resistance and 0.5W power rating, the ERJT14J122U can continuously handle up to approximately 20mA at 5V supply, which is the standard drive current for many indicator LEDs. At 12V supply with a forward-biased LED dropping about 2V, the resistor handles roughly 8.3mA (about 83mW), well within its 0.5W limit, making it reliable for automotive and industrial LED indicator circuits operating from higher supply voltages.
How does the 1210 package of the ERJT14J122U help in high-ambient-temperature environments?
The ERJT14J122U 1210 package provides a larger copper contact area of 3.2mm × 2.5mm compared to 1206 or 0805 packages, which improves heat transfer from the resistor body to the PCB ground plane. This allows the component to sustain its rated 0.5W at elevated ambient temperatures up to 70°C with standard derating, making it more suitable than smaller-footprint alternatives for industrial enclosures or automotive under-hood electronics operating at 85°C or higher.
Can the ERJT14J122U be used in transistor base bias networks for 12V switching circuits?
Yes, the ERJT14J122U is an excellent fit for base bias resistors in NPN or PNP switching transistors operating from 12V rails. A 1.2kΩ base resistor limits base drive current to approximately 10mA at 12V, ensuring full saturation for transistors with hFE above 20 while keeping power dissipation at 120mW — 24% of the 0.5W rated limit. This thermal headroom makes the ERJT14J122U reliable for sustained switching at frequencies up to several kilohertz in industrial relay drivers and solenoid control circuits.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
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 |
|---|---|---|
| 10+ | $0.1510 | $1.51 |
| 100+ | $0.1130 | $11.30 |
| 1000+ | $0.0870 | $87.00 |
| 5000+ | $0.0410 | $205.00 |
| 10000+ | $0.0374 | $374.00 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”
You May Also Like
NC20J00682JBA
AVX
Resistor
PR02000201001JR500
Vishay
Resistor
CRCW060322K6FKEA
Vishay
Resistor
MC01W0805122K6
MULTICOMP
Resistor
MC0125W1206130K1
MULTICOMP
Resistor
CPF0603B22K6E1
TE Connectivity
Resistor
CRCW1206133RFKEAHP
Vishay
Resistor
MC1206S4F1330T5E
MULTICOMP
Resistor
MC0125W12061133R
MULTICOMP
Resistor
CRCW1206133RFKEB
Vishay
Resistor
CRCW1206133RFKEA
Vishay
Resistor
CRCW0805133RFKEAHP
Vishay
Resistor
RC0805FR-1010KL
YAGEO (PHYCOMP)
Resistor
CRCW0805270RJNEA
Vishay
Resistor
CRCW080512K0JNEA
Vishay
Resistor
CRCW08051K80JNEA
Vishay
Resistor
RN73C2A2K21BTDF
TE Connectivity
Resistor
RN73C2A100RBTDF
TE Connectivity
Resistor
RN73C2A30K1BTDF
TE Connectivity
Resistor
RL0402FR-070R05L
YAGEO (PHYCOMP)
Resistor
RC0805JR-0712KL
YAGEO (PHYCOMP)
Resistor
PCF0805R-2K43BI
WELWYN
Resistor
PCF0805-R-2K49BT1
WELWYN
Resistor
CF12JT360R
Stackpole Electronics Inc.
Resistor