Ohmite 40J68R Equivalent & Substitute Parts

Part Overview

The Ohmite 40J68R is a 68 Ohm, 5% tolerance, 10W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is currently active in production and maintains 617 pieces in new original stock. Axial wirewound resistors of this specification are used in power applications requiring precise resistance values with stable thermal performance. Substitute parts are identified when the original part becomes unavailable, when alternative packaging is required, or when compliance upgrades are necessary for specific applications.

Substiute Parts

40J68R

OhmiteIn Stock: 71140J68R Datasheet

Current PartRFQ

40J68RE

OhmiteIn Stock: 101640J68RE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 40J68R are identified based on electrical and mechanical parameter equivalence. The primary substitution criterion is parametric matching across the following key specifications:

• Resistance value: 68 Ohms
• Tolerance: ±5%
• Power rating: 10W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±20ppm/°C
• Physical dimensions: 0.406" Dia x 1.902" L (10.30mm x 48.30mm)
• Number of terminations: 2

The 40J68RE is classified as a parametric equivalent. It maintains identical electrical characteristics and physical form factor, with the primary distinction being packaging configuration (Bulk versus standard packaging) and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both the 40J68R and 40J68RE are active production components from Ohmite's Ohmicone® 40 series. Selection between these parts should be based on the following criteria:

40J68R is appropriate for applications where standard packaging is specified and RoHS non-compliant components are acceptable.

40J68RE is the preferred selection for applications requiring ROHS3 compliance. This part maintains identical electrical and mechanical specifications while meeting current environmental and regulatory standards. The bulk packaging configuration of the 40J68RE may be advantageous for high-volume procurement scenarios.

Both parts carry the same ECCN (EAR99) and HTSUS (8533.21.0080) classifications, indicating equivalent export and tariff treatment.

Frequently Asked Questions (FAQ)

Q: Can the 40J68RE be used as a direct replacement for the 40J68R?

A: Yes. The 40J68RE is electrically and mechanically equivalent to the 40J68R. Both components have identical resistance values (68 Ohms), tolerance (±5%), power rating (10W), temperature coefficient (±20ppm/°C), and physical dimensions (0.406" Dia x 1.902" L). The primary difference is RoHS compliance status and packaging configuration.

Q: What is the difference between the standard packaging of the 40J68R and the bulk packaging of the 40J68RE?

A: Packaging configuration refers to the quantity and presentation method for component delivery. Standard packaging typically involves smaller unit quantities with protective packaging, while bulk packaging is used for larger volume orders. Both configurations contain identical components with the same electrical and mechanical specifications.

Q: Does RoHS compliance affect the electrical performance of the 40J68RE compared to the 40J68R?

A: No. ROHS3 compliance is a manufacturing and material composition standard that does not alter the electrical characteristics of the component. Both parts maintain identical resistance, tolerance, power rating, and temperature coefficient specifications.

Q: Are there any dimensional differences between these parts?

A: No. Both the 40J68R and 40J68RE have identical physical dimensions of 0.406" Dia x 1.902" L (10.30mm x 48.30mm) and are both configured as axial through-hole components with 2 terminations.

Q: Which part should be selected for new designs?

A: Selection should be based on regulatory and compliance requirements for the target application. For applications requiring ROHS3 compliance, the 40J68RE is the appropriate choice. Both parts are active production components with adequate inventory availability.