Equivalent & Substitute Parts for 12FR070

Part Overview

The 12FR070 is a 70 mOhms ±1% 2W axial through-hole resistor manufactured by Ohmite, designed for current sense applications with non-inductive metal element construction. This component is classified as Active product status. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

12FR070

OhmiteIn Stock: 87712FR070 Datasheet

Current PartRFQ

12FR070E

OhmiteIn Stock: 236412FR070E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 12FR070 are qualified based on the following critical parameters that determine functional and mechanical interchangeability:

• Resistance value: 70 mOhms
• Tolerance: ±1%
• Power rating: 2W
• Composition: Metal Element
• Features: Current Sense, Non-Inductive
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -55°C to 275°C
• Package type: Axial
• Physical dimensions: 0.094" Dia x 0.417" L (2.40mm x 10.60mm)
• Number of terminations: 2

The substitute part 12FR070E meets all electrical and mechanical specifications identical to the main part number, with differences limited to packaging configuration and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 12FR070 and 12FR070E are Active status products from Ohmite with identical electrical and mechanical specifications. Selection between these part numbers should be based on the following criteria:

The 12FR070E offers ROHS3 compliance, making it suitable for applications subject to RoHS regulations. The 12FR070 is RoHS non-compliant and should be selected only when RoHS compliance is not a requirement. Both parts are REACH Unaffected and classified under ECCN EAR99.

Packaging differences exist between the two part numbers: 12FR070 is supplied in standard packaging, while 12FR070E is supplied in bulk packaging. Inventory availability should be considered in component selection, as 12FR070E maintains higher stock levels (2348 Pcs) compared to 12FR070 (792 Pcs).

Frequently Asked Questions (FAQ)

Q: Are 12FR070 and 12FR070E electrically identical?

A: Yes. Both part numbers share identical electrical specifications: 70 mOhms resistance, ±1% tolerance, 2W power rating, ±50ppm/°C temperature coefficient, and -55°C to 275°C operating temperature range.

Q: What is the primary difference between 12FR070 and 12FR070E?

A: The primary differences are packaging configuration (standard vs. bulk) and RoHS compliance status. The 12FR070E is ROHS3 compliant, while the 12FR070 is RoHS non-compliant.

Q: Can 12FR070E replace 12FR070 in existing designs?

A: Yes, provided that RoHS compliance requirements are met or not applicable to the application. Physical dimensions and electrical performance are identical.

Q: Are there any mechanical compatibility concerns when substituting between these part numbers?

A: No. Both parts use identical axial package construction with 0.094" diameter and 0.417" length (2.40mm x 10.60mm), ensuring mechanical compatibility in PCB layouts and through-hole applications.

Q: Which part number should be selected for new designs?

A: Selection depends on regulatory requirements. For applications requiring RoHS compliance, 12FR070E is the appropriate choice. For applications without RoHS requirements, either part number is suitable based on availability and packaging needs.