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Ohmite OY121K Ceramic Composition Resistor

OHMITE's OX/OY Series ceramic composition resistors are engineered for demanding applications requiring surge protection, high peak power, and high energy handling. These resistors are ideal for use in high-voltage power supplies, R-C snubber circuits, and inrush limiters, often serving as a reliable replacement for carbon composition resistors. They boast a 10% tolerance and are designed to meet high energy density demands, providing enhanced performance and reliability in various industrial and electronic applications.

Authorized Distributors
Source:Newark
Part No:OY121K
Stock:1118
Inv Date:06-01-2026
Price: Unit price: $1.35
Buy/RFQ:
Source:DigiKey
Part No:OY121K
Stock:1118
Inv Date:06-01-2026
Price: Unit price: $0.97
Buy/RFQ:
Part No:OY121K
Stock:0
Inv Date:06-02-2026
Price: N/A
Buy/RFQ:
Part No:OY121K
Stock:1118
Inv Date:06-01-2026
Price: Unit price: $1.1
Buy/RFQ:
Part No:OY121K
Stock:1118
Inv Date:06-01-2026
Price: Unit price: $1.1
Buy/RFQ:

Ohmite OY121K Ceramic Composition Resistor Specifications:

  • Watts: 2
  • Resistance range: 3.3Ω-1M
  • Joules max: 80
  • Max working volts: 400
  • Terminals: Pb-free solder-coated axial
  • Coating: Silicone ceramic
  • Derating: Linear from 100% @ +70°C to 0% @ +200°C
  • Operating Temp: -40°C to +220°C
  • Tolerance: ±10%
  • Power Rating: Based on 70°C free air rating
  • Temperature Coefficient: -1300 ±300ppm/°C
  • Life Test: MIL-STD-202, Method 108: ±5%
  • Short Time Overload: 2x rated V, 5 sec ON @ 70°C: ±(2% +0.05Ω)
  • Resistance to Pulse: ±5%
  • Moisture Resistance: 1000 hrs @ 40°C, 90 - 95% RH: ±5%
  • Dielectric Strength: 500V
  • Max Overload Voltage: 600V
  • Max Pulse Voltage: 20KV
  • Pulse Tolerance: 1240V @ 52µF (OX), 1640V @ 52µF (OY)

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Frequently Asked Questions

Where can I buy Ohmite OY121K?

You can click on the BUY or RFQ button to purchase OY121K from an authorized Ohmite distributor.

How do I troubleshoot issues or seek technical support for part OY121K?

You can download the OY121K datasheet or visit the Ohmite website for support.

Who is the manufacturer of OY121K?

Ohmite

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