AY680K Equivalent & Substitute Parts

Part Overview

The AY680K is a 68 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 AY680K is classified as obsolete, making identification of suitable substitutes essential for ongoing system support and component procurement.

Substiute Parts

AY680K

OhmiteIn Stock: 707AY680K Datasheet

Current PartRFQ

AY680KE

OhmiteIn Stock: 988AY680KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AY680K is determined by strict equivalence across the following critical parameters:

• Resistance value: 68 Ohms
• Tolerance: ±10%
• Power rating: 4.5W
• Composition: Ceramic
• Package configuration: Radial
• 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 AY680KE meets all substitution criteria as a direct equivalent within the PulsEater® A series, maintaining identical electrical specifications and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The AY680KE is the direct substitute for the obsolete AY680K. 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is product status and regulatory compliance: the AY680KE is active production and ROHS3 compliant, whereas the AY680K is obsolete and RoHS non-compliant.

For new designs or system updates requiring RoHS compliance, the AY680KE is the appropriate selection. For legacy system maintenance where RoHS compliance is not a requirement, the AY680KE remains functionally equivalent and provides access to active inventory.

Frequently Asked Questions (FAQ)

Q: Can the AY680KE be used as a direct replacement for the AY680K in existing assemblies?

A: Yes. The AY680KE is electrically and mechanically equivalent to the AY680K. Both components share identical resistance, tolerance, power rating, package configuration, and physical dimensions. Direct substitution is supported without circuit modification.

Q: What is the primary reason for substituting the AY680K?

A: The AY680K is classified as obsolete. The AY680KE provides continued access to equivalent functionality through active production inventory.

Q: Are there differences in RoHS compliance between these parts?

A: Yes. The AY680K is RoHS non-compliant, while the AY680KE is ROHS3 compliant. For applications subject to RoHS requirements, the AY680KE is the required selection.

Q: Do the AY680K and AY680KE have identical physical dimensions?

A: Yes. Both components measure 0.984" L x 0.827" W (25.00mm x 21.00mm) with a maximum seated height of 1.102" (28.00mm). PCB layout and mechanical clearance requirements are identical.

Q: Are the operating temperature ranges the same?

A: Yes. Both the AY680K and AY680KE operate across the temperature range of -55°C to 150°C.