AY330K Equivalent & Substitute Parts

Part Overview

The AY330K is a 33 Ohm, 4.5W radial through-hole resistor manufactured by Ohmite as part of the PulsEater® A series. This ceramic composition resistor features flame retardant coating, moisture resistance, non-inductive design, and pulse withstanding capability. The AY330K is currently classified as obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and legacy system support.

Substiute Parts

AY330K

OhmiteIn Stock: 744AY330K Datasheet

Current PartRFQ

AY330KE

OhmiteIn Stock: 1141AY330KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AY330K is determined by strict equivalence across the following critical parameters:

• Resistance value: 33 Ohms
• Tolerance: ±10%
• Power rating: 4.5W
• Composition: Ceramic
• Package configuration: Radial lead through-hole
• Operating temperature range: -55°C to 150°C
• Physical dimensions: 0.984" L x 0.827" W with maximum seated height of 1.102"
• Feature set: Flame retardant coating, moisture resistance, non-inductive, pulse withstanding capability

The AY330KE meets all substitution criteria as a direct equivalent component within the same PulsEater® A series.

Parameter Comparison

Engineering Selection Recommendations

The AY330KE is the direct substitute for the obsolete AY330K. Both components are manufactured by Ohmite within the PulsEater® A series and maintain identical electrical and mechanical specifications. The primary distinction is product status and regulatory compliance: the AY330KE is currently in active production and meets ROHS3 compliance requirements, whereas the AY330K is obsolete and RoHS non-compliant.

For new designs and ongoing system support, the AY330KE should be selected as the replacement component. The AY330KE provides equivalent performance characteristics while ensuring access to current inventory and compliance with modern regulatory standards.

Frequently Asked Questions (FAQ)

Q: Can the AY330KE be used as a direct replacement for the AY330K in existing assemblies?

A: Yes. The AY330KE is electrically and mechanically equivalent to the AY330K. Both components share identical resistance values, tolerance, power rating, operating temperature range, and physical dimensions. The radial lead configuration and package footprint are identical, enabling direct substitution in PCB layouts and through-hole applications.

Q: What is the primary reason to transition from AY330K to AY330KE?

A: The AY330K is classified as obsolete, making long-term availability uncertain. The AY330KE is in active production status, ensuring reliable supply for current and future applications. Additionally, the AY330KE meets ROHS3 compliance standards, whereas the AY330K does not.

Q: Are there any performance differences between the AY330K and AY330KE?

A: No. Both components are specified with identical electrical characteristics: 33 Ohms resistance, ±10% tolerance, 4.5W power rating, ceramic composition, and -55°C to 150°C operating temperature range. Both feature flame retardant coating, moisture resistance, non-inductive design, and pulse withstanding capability.

Q: What packaging options are available for the AY330KE?

A: The AY330KE is supplied in bulk packaging. The component maintains the radial lead through-hole configuration with identical physical dimensions to the AY330K.

Q: Are there any compliance or certification differences?

A: Yes. The AY330KE is ROHS3 compliant, while the AY330K is RoHS non-compliant. Both components are REACH unaffected and classified under ECCN EAR99. For applications requiring RoHS compliance, the AY330KE is the appropriate selection.