AW220K Equivalent & Substitute Parts

Part Overview

The AW220K is a 22 Ohm, 2.5W through-hole radial resistor manufactured by Ohmite, part of the PulsEater® A series. This ceramic composition resistor features flame retardant coating, moisture resistance, non-inductive design, and pulse withstanding capability. The AW220K is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations where this specification is required.

Substiute Parts

AW220K

OhmiteIn Stock: 1003AW220K Datasheet

Current PartRFQ

AW220KE

OhmiteIn Stock: 1003AW220KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AW220K is determined by strict equivalence across the following critical parameters:

• Resistance Value: 22 Ohms (exact match required)
• Tolerance: ±10% (exact match required)
• Power Rating: 2.5W (exact match required)
• Composition: Ceramic (exact match required)
• Package Configuration: Radial lead (exact match required)
• Operating Temperature Range: -55°C to 150°C (exact match required)
• Physical Dimensions: Compatible radial form factor within specified envelope

The AW220KE qualifies as a direct substitute based on complete alignment with all critical electrical and mechanical parameters. Both parts share identical resistance, tolerance, power rating, ceramic composition, radial package type, and operating temperature specifications.

Parameter Comparison

Engineering Selection Recommendations

The AW220KE is the direct equivalent substitute for the obsolete AW220K. Both parts are manufactured by Ohmite and provide identical electrical performance across all critical specifications: 22 Ohm resistance, ±10% tolerance, 2.5W power rating, ceramic composition, and -55°C to 150°C operating temperature range.

The primary distinction between these parts is product status and regulatory compliance. The AW220K is obsolete, while the AW220KE maintains active production status, ensuring continued availability for procurement and supply chain continuity. The AW220KE achieves RoHS compliance, whereas the AW220K is RoHS non-compliant. For applications subject to RoHS requirements or environmental regulations, the AW220KE is the appropriate selection.

Physical dimensions remain compatible between both parts, with radial lead configuration and maximum seated height of 0.866" (22.00mm), supporting direct board-level substitution without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the AW220KE be used as a direct replacement for the AW220K in existing designs?

A: Yes. The AW220KE provides electrical and mechanical equivalence to the AW220K across all critical parameters: resistance value, tolerance, power rating, composition, package type, operating temperature range, and physical dimensions. Direct substitution is supported without circuit redesign or board layout modification.

Q: What is the primary reason to transition from AW220K to AW220KE?

A: The AW220K is classified as obsolete, creating supply chain risk. The AW220KE is an active product from the same manufacturer with identical specifications, ensuring long-term availability and procurement reliability. Additionally, the AW220KE achieves RoHS compliance, meeting current environmental and regulatory standards.

Q: Are there any performance differences between AW220K and AW220KE?

A: No performance differences exist. Both parts deliver identical electrical characteristics: 22 Ohm resistance at ±10% tolerance, 2.5W power dissipation capability, ceramic composition with flame retardant coating, moisture resistance, non-inductive design, and pulse withstanding capability. Operating temperature range is identical at -55°C to 150°C.

Q: What packaging options are available for the AW220KE?

A: The AW220KE is supplied in bulk packaging, consistent with standard radial lead resistor distribution. The radial lead configuration and physical envelope remain compatible with the original AW220K footprint.

Q: Is RoHS compliance a factor in selecting between these parts?

A: RoHS compliance status differs between the two parts. The AW220K is RoHS non-compliant, while the AW220KE is RoHS compliant. For applications subject to RoHS directives or customer requirements mandating RoHS-compliant components, the AW220KE is the required selection.