45F35R Equivalent & Substitute Parts

Part Overview

The Ohmite 45F35R is a 35 Ohm, 1% tolerance, 5W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is classified as Active and remains in production. Equivalent and substitute parts are identified when original stock is unavailable or when design requirements permit alternative manufacturers meeting identical or compatible electrical and mechanical specifications.

Substiute Parts

45F35R

OhmiteIn Stock: 99545F35R Datasheet

Current PartRFQ

ALSR0535R00FE12

Vishay DaleIn Stock: 1171ALSR0535R00FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 45F35R is determined by matching the following critical parameters:

• Resistance value: 35 Ohms
• Tolerance: ±1%
• Power rating: 5W
• Composition: Wirewound
• Package: Axial through-hole
• Termination count: 2

The Vishay Dale ALSR0535R00FE12 meets all core electrical and mechanical requirements. Both parts deliver identical resistance, tolerance, and power dissipation characteristics in an axial package configuration suitable for through-hole PCB assembly.

Parameter Comparison

Engineering Selection Recommendations

Both the 45F35R and ALSR0535R00FE12 are Active products with current manufacturing status. The Vishay Dale ALSR0535R00FE12 offers ROHS3 compliance, whereas the Ohmite 45F35R is RoHS non-compliant. For applications requiring RoHS certification or regulatory compliance with modern environmental standards, the ALSR0535R00FE12 is the appropriate selection. The Vishay Dale part also includes moisture-resistant construction and a defined operating temperature range of -65°C to 250°C. Physical dimensions differ slightly; the Vishay Dale part is marginally smaller in diameter and length. Both parts are suitable for standard through-hole PCB assembly applications where the axial package footprint is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the ALSR0535R00FE12 directly replace the 45F35R in existing designs?

A: Yes. Both parts share identical resistance (35 Ohms), tolerance (±1%), power rating (5W), and axial package configuration. Physical dimensions are similar, with the Vishay Dale part slightly smaller. Axial component orientation and lead spacing are compatible with standard through-hole PCB layouts designed for the 45F35R.

Q: What is the difference in temperature coefficient between these parts?

A: The 45F35R has a temperature coefficient of ±20ppm/°C, while the ALSR0535R00FE12 is ±30ppm/°C. This 10ppm/°C difference is negligible for most general-purpose applications but may be relevant in precision analog circuits requiring tight temperature stability.

Q: Does the moisture-resistant feature of the ALSR0535R00FE12 affect compatibility?

A: No. Moisture resistance is an additional feature that does not impact electrical performance or mechanical compatibility. It provides enhanced reliability in humid or corrosive environments without affecting circuit operation.

Q: What is the significance of RoHS compliance in this substitution?

A: RoHS3 compliance indicates the ALSR0535R00FE12 meets current environmental and hazardous substance restrictions. If your application, customer base, or regulatory jurisdiction requires RoHS certification, the Vishay Dale part is the compliant choice. The Ohmite 45F35R does not meet this requirement.

Q: Are there any PCB layout considerations when substituting these parts?

A: The slight dimensional difference (0.343" vs. 0.312" diameter) is negligible for standard through-hole layouts. Both parts use identical 2-pin axial termination. Verify that your PCB footprint accommodates the slightly shorter length of the Vishay Dale part (0.875" vs. 0.937"), though this difference is typically within standard component spacing tolerances.