Skip to main content

Bourns Inc. MFR1 Series

27 variants · Bourns Inc.All Circuit Protection

About the Bourns Inc. MFR1 Series

The Bourns Inc. MFR1 Series series groups 27 related part numbers, each listed with full specifications, a datasheet where available, and an RFQ option. The listed variants share a common approval agency of cURus, TUV, case of Radial, Disc and mounting of Through Hole. Variants differ by current - hold (Ih), current - max and current - trip, so you can match the exact current - hold (Ih) your application requires using the selection guide below. The range mixes active and legacy part numbers, so you can source both current Bourns Inc. MFR1 Series variants and discontinued ones from a single page.

Select a variant by

Current - hold (Ih)
1.1 A · 1.35 A · 1.6 A · 11 A
Current - max
40 A · 100 A
Current - trip
2.2 A · 2.7 A · 3.2 A · 22 A
Height - seated
0.551\" (14.00mm) · 0.661\" (16.80mm) · 0.744\" (18.90mm) · 1.295\" (32.90mm)
Lead spacing
0.201\" (5.10mm) · 0.402\" (10.20mm)
Operating temperature
-40°C ~ 85°C · -40°C~85°C
Package
Bulk · Cut Tape (CT); Tape & Box (TB) · Tape & Box (TB) · Tape & Reel (TR) Cut Tape (CT) · Tape & Reel (TR); Cut Tape (CT)
Resistance - initial (Ri)
3 mOhms · 55 mOhms · 65 mOhms · 100 mOhms

Shared specifications

Approval agency
cURus, TUV
Case
Radial, Disc
Mounting
Through Hole
Ratings
-
Thickness
-
Type
Polymeric

Variant comparison

ParameterMF-R110MF-R1100MF-R1100-0-99MF-R110-0-99MF-R1100-AP-99MF-R110-2-99
Current - hold (Ih)1.1 A11 A11 A1.1 A11 A1.1 A
Current - max40 A100 A100 A40 A100 A40 A
Current - trip2.2 A22 A22 A2.2 A22 A2.2 A
Height - seated0.551\" (14.00mm)1.295\" (32.90mm)1.295\" (32.90mm)0.551\" (14.00mm)1.295\" (32.90mm)0.551\" (14.00mm)
Lead spacing0.201\" (5.10mm)0.402\" (10.20mm)0.402\" (10.20mm)0.201\" (5.10mm)0.402\" (10.20mm)0.201\" (5.10mm)
Operating temperature-40°C~85°C-40°C~85°C-40°C~85°C-40°C~85°C-40°C~85°C-40°C~85°C
PackageBulkBulkBulkBulkTape & Box (TB)Tape & Reel (TR); Cut Tape (CT)
Resistance - initial (Ri)100 mOhms3 mOhms3 mOhms100 mOhms3 mOhms100 mOhms

Request a quote on any Bourns Inc. MFR1 Series part number and we confirm price, availability and lead time per line — including end-of-life and allocation-constrained variants.

All variants