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ERJ2GEJ394X

390kΩ 5% thick film resistor, 0402, 1/32W, general purpose

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Manufacturer Part：

ERJ2GEJ394X

Package：

0402 (1005 Metric) - 1.0 x 0.5 x 0.35mm

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Description

Product Overview

The ERJ2GEJ394X from Panasonic is a 390kΩ ±5% thick film chip resistor in a 0402 (1005 metric) package. Part of the ERJ-2GE general-purpose series, this high-value resistor is suitable for high-impedance bias networks, pull-up applications, and timing circuits.

Key Specifications

Resistance 390kΩ
Tolerance ±5% (J)
Power Rating 0.031W (1/32W)
Temperature Coefficient ±200ppm/°C
Voltage Rating 25V
Package 0402 (1005 Metric) – 1.0 x 0.5 x 0.35mm
Operating Temperature -55°C to +155°C

Features

  • 390kΩ E24 value for high-impedance bias networks
  • 0402 compact footprint for high-density designs
  • General-purpose thick film technology
  • Low power consumption suitable for battery-powered devices
  • Panasonic ERJ series reliability

Applications

  • High-impedance voltage divider for low-power biasing
  • Open-drain output pull-up resistor
  • RC timing circuit with long time constants
  • Leakage current measurement shunt
  • Low-power feedback and bias networks

The ERJ2GEJ394X from Panasonic is a 390kΩ ±5% thick film chip resistor in a 0402 (1005 metric) package, part of the ERJ-2GE general-purpose series. The 394 marking code (39 × 10⁴ = 390kΩ) represents a standard E24 value commonly used in high-impedance bias and timing circuits. The 0.031W power rating is sufficient for the very low currents typical at 390kΩ resistance (e.g., 25μA at 10V). The compact 0402 footprint is ideal for high-density portable device designs where board space is at a premium.

The ERJ2GEJ394X uses a metal glaze thick film resistive element deposited on an alumina substrate, laser-trimmed to 390kΩ with ±5% tolerance. The high resistance value is achieved through a combination of high-resistivity thick film paste formulation and a long, narrow resistive path geometry. The three-layer electrode (Ag/Ni/Sn) provides reliable solder joints. The 25V voltage rating reflects the maximum working voltage for the 0402 ERJ-2GE series, which is lower than the 50V rating of the 0603 and larger packages.

Pin Name Type Function
1 Terminal 1 Passive One end of resistive element
2 Terminal 2 Passive Other end of resistive element
  • Real-time clock (RTC) crystal oscillator enable pull-up resistor in battery-backed circuits
  • Microcontroller reset pin pull-up with ultra-low quiescent current
  • RC timing network for watchdog timer with long time constant
  • High-impedance voltage divider for battery voltage monitoring in wearables
  • Sensor open-drain interrupt output pull-up in IoT devices
Manufacturer Part Number Package Notes
YAGEO RC0402JR-07390KL 0402 390kΩ 5%
Vishay CRCW0402390KJNED 0402 390kΩ 5% AEC-Q200
Samsung RC1005J394CS 0402 390kΩ 5%
Bourns CR0402-390KJW 0402 390kΩ 5%
Panasonic ERJ2RKF3903X 0402 390kΩ 1% precision
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Contact Information

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Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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