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Ohmite 40J12RE Silicone-Ceramic Conformal Resistor

Ohmite 40 Series resistors are economical conformal silicone-ceramic coated resistors designed for a wide range of electrical and electronic applications. These all-welded units offer low temperature coefficients and excellent resistance to thermal shock. They are ideal for commercial, industrial, and communications equipment, and are available with both 1% and 5% tolerance options. The robust construction and durable coating ensure long-term reliability in demanding environments. RoHS compliant versions are available.

Authorized Distributors
Source:DigiKey
Part No:40J12RE
Stock:370
Inv Date:06-01-2026
Price: Unit price: $3.72
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Part No:40J12RE
Stock:236
Inv Date:06-02-2026
Price: Unit price: $3.72
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Part No:40J12RE
Stock:0
Inv Date:06-01-2026
Price: Unit price: $3.32
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Part No:40J12RE
Stock:400
Inv Date:06-01-2026
Price: Unit price: $2.06
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Part No:40J12RE
Stock:400
Inv Date:06-01-2026
Price: Unit price: $2.06
Buy/RFQ:
Part No:40J12RE
Stock:250
Inv Date:06-02-2026
Price: N/A
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Ohmite 40J12RE Silicone-Ceramic Conformal Resistor Specifications:

  • Coating: Conformal siliconeceramic
  • Core: Ceramic
  • Terminals: Solder-coated copper clad axial (96% Sn, 3.5% Ag, 0.5% Cu)
  • Tolerance: ±5% (J type), ±1% (F type)
  • Power rating: Based on 25°C free air rating
  • Overload: Under 5 watts: 5 times rated wattage for 5 seconds. 5 watts and over: 10 times rated wattage for 5 seconds.
  • Temperature coefficient: Under 1Ω: ±90 ppm/°C, 1Ω to 9.99Ω: ±50 ppm/°C, 10Ω and over: ±20 ppm/°C
  • Derating: Linearly from 100% @ +25°C to 0% @ +275°C

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Frequently Asked Questions

Where can I buy Ohmite 40J12RE?

You can click on the BUY or RFQ button to purchase 40J12RE from an authorized Ohmite distributor.

How do I troubleshoot issues or seek technical support for part 40J12RE?

You can download the 40J12RE datasheet or visit the Ohmite website for support.

Who is the manufacturer of 40J12RE?

Ohmite

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