OY681K Equivalent & Substitute Parts

Part Overview

The OY681K is a 680 Ohms ±10% 2W through-hole resistor with axial leads, manufactured by Ohmite. This ceramic composition resistor features moisture resistance and pulse withstanding capabilities, designed for applications requiring reliable performance across a wide operating temperature range of -40°C to 220°C. The OY681K is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

OY681K

OhmiteIn Stock: 777OY681K Datasheet

Current PartRFQ

OY681KE

OhmiteIn Stock: 1556OY681KE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the OY681K is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute component must match the following specifications without deviation:

• Resistance value: 680 Ohms
• Tolerance: ±10%
• Power rating: 2W
• Composition: Ceramic
• Package configuration: Axial with 2 terminations
• Physical dimensions: 0.276" Dia x 0.748" L (7.00mm x 19.00mm)
• Operating temperature range: -40°C ~ 220°C
• Temperature coefficient: -1000 / -1600 ppm/°C
• Features: Moisture Resistant, Pulse Withstanding

The OY681KE meets all these criteria and is classified as a direct equivalent substitute for the obsolete OY681K.

Parameter Comparison

Engineering Selection Recommendations

The OY681KE is the direct equivalent substitute for the obsolete OY681K. Both components are manufactured by Ohmite and share identical electrical and mechanical specifications across all critical parameters including resistance, tolerance, power rating, package type, and operating temperature range.

The primary distinction between the two parts is product status and regulatory compliance. The OY681K is obsolete and RoHS non-compliant, while the OY681KE is an active product with ROHS3 compliance. For new designs or production requiring RoHS compliance, the OY681KE is the appropriate selection. For legacy system support where RoHS compliance is not a requirement, the OY681KE remains functionally equivalent and interchangeable.

Frequently Asked Questions (FAQ)

Q: Can the OY681KE be used as a direct replacement for the OY681K?

A: Yes. The OY681KE is electrically and mechanically identical to the OY681K. Both components have the same resistance value (680 Ohms), tolerance (±10%), power rating (2W), package type (axial), physical dimensions, and operating temperature range. The components are pin-compatible and functionally interchangeable.

Q: What is the difference between the OY681K and OY681KE?

A: The OY681K is classified as obsolete, while the OY681KE is an active product. The OY681KE also carries ROHS3 compliance certification, whereas the OY681K is RoHS non-compliant. All electrical and mechanical specifications are identical.

Q: Are there any packaging differences between these parts?

A: The OY681K packaging designation is listed as "-" (unspecified), while the OY681KE is supplied in bulk packaging. Both components use the same axial package configuration with identical physical dimensions (0.276" Dia x 0.748" L / 7.00mm x 19.00mm).

Q: Is the OY681KE suitable for applications requiring RoHS compliance?

A: Yes. The OY681KE is ROHS3 compliant and is suitable for applications with RoHS compliance requirements. The OY681K is RoHS non-compliant.

Q: What is the operating temperature range for these resistors?

A: Both the OY681K and OY681KE operate across the temperature range of -40°C to 220°C with a temperature coefficient of -1000 / -1600 ppm/°C.