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ERJ-2RKF4992X

49.9kOhm 0.1W thick film resistor, 0402, ±1%, ±100ppm/°C, AEC-Q200

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Manufacturer Part：

ERJ-2RKF4992X

Package：

0402 (1005 Metric) 1.0 x 0.5 x 0.35 mm

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Description

Product Overview

The ERJ-2RKF4992X is a thick film chip resistor from Panasonic’s ERJ series, featuring 49.9 kOhm resistance with ±1% tolerance and ±100 ppm/°C temperature coefficient in an ultra-compact 0402 (1005 Metric) surface-mount package. AEC-Q200 qualified, the E96 series value is commonly used in precision divider and biasing networks.

Key Specifications

Resistance 49.9 kOhm
Tolerance ±1% (F)
Power Rating 0.1W (1/10W)
Temperature Coefficient ±100 ppm/°C
Package / Case 0402 (1005 Metric)
Operating Temperature -55°C to +155°C
Qualification AEC-Q200

Features

  • AEC-Q200 automotive qualified
  • E96 precision value (49.9 kOhm)
  • Ultra-compact 0402 for miniaturized designs
  • ±1% tolerance with ±100 ppm/°C TCR
  • Metal glaze thick film on alumina substrate

Applications

  • Op-amp gain setting and feedback
  • Precision voltage divider networks
  • Sensor signal conditioning biasing
  • Communication equipment impedance matching

The ERJ-2RKF4992X is a thick film chip resistor from Panasonic’s ERJ series, featuring 49.9 kOhm resistance with ±1% tolerance and ±100 ppm/°C temperature coefficient in an ultra-compact 0402 (1005 Metric) surface-mount package. AEC-Q200 qualified, the E96 series value is commonly used in precision divider and biasing networks for automotive, industrial, and communication applications.

The ERJ-2RKF4992X operates as a passive thick film resistor:

1. Resistive Element: Metal glaze thick film on alumina substrate, laser-trimmed to 49.9 kOhm E96 precision.

2. Electrode: Silver-palladium inner, nickel barrier, tin outer plating.

3. Power Derating: Full 0.1W up to 70°C ambient, derating to zero at 155°C.

4. The 49.9 kOhm value is commonly paired with 10 kOhm to create precise 5:1 voltage dividers.

Terminal Name Type Function
1 Terminal A Passive Resistor terminal
2 Terminal B Passive Resistor terminal

Note: 2-terminal passive chip resistor, no polarity. 0402 requires reflow soldering only.

Application Circuit Role Key Requirement
Op-Amp Circuit Gain setting feedback resistor 49.9k E96, ±1%
Voltage Divider Precision 5:1 divider with 10k 49.9k, ±100 ppm/°C
Sensor Interface Signal conditioning biasing AEC-Q200, 0402 compact
Communication Impedance matching network E96 precision, low drift
Automotive ECU Measurement circuit biasing 0402, AEC-Q200
Manufacturer Part Number Package Key Specs Notes
Vishay CRCW040249K9FKEA 0402 49.9kOhm, 0.063W, 1% Direct equivalent
Yageo RC0402FR-0749K9L 0402 49.9kOhm, 0.063W, 1% Direct equivalent
KOA Speer RK73H1ETTP4992F 0402 49.9kOhm, 0.063W, 1% Direct equivalent
Samsung RC1005F4992CS 0402 49.9kOhm, 0.063W, 1% Direct equivalent
Walsin WR04X4992FTL 0402 49.9kOhm, 0.063W, 1% Direct equivalent
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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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