Round Permalloy 80
For Input and Inter-stage Transformers
Round Permalloy 80, a non-oriented 80% nickel-iron alloy, is processed to develop high initial permeability and low coercive force. It has lower squareness and core gain than the square type, as these characteristics are sacrificed to produce the high initial permeability and low coercive force properties. Round Permalloy 80 is especially useful in designing highly sensitive input and inter-stage transformers where signals are extremely low and DC currents are not present. It is also useful in current transformers where losses must be kept to a minimum and high accuracy is a necessity. The initial permeability of this material is between 20,000 and 50,000 with coercive force values about 70% that of Square Permalloy 80.
Key Characteristics
- Composition: Ni • Fe • Mo
- Shapes: Toroid
- Sizes: 7 mm to 250 mm
- Flux Density (T): 0.66 to 0.82
- Coating Color: Red
Round Permalloy 80 is a replacement for VAC discontinued MUMETALL®.
VAC and MUMETALL are trademarks of VACUUMSCHMELZE GmbH & Co. KG
Tape Wound Core Part Number Identification
How To Order: Magnetics Tape Wound Cores
Round Permally 80 Material Code: R
| Part Number | Description | Core Area cm2 |
Le Path Length cm |
Wa Window Area cm2 |
WaAc cm4 |
Bare ID mm |
Bare OD mm |
Bare HT mm |
Boxed ID min mm |
Boxed OD max mm |
Boxed HT max mm |
| 01501531R | 1 RD PERM NONMETALC | 0.038 | 3.49 | 0.456 | 0.02 | 9.53 | 12.70 | 3.18 | 7.95 | 14.45 | 5.05 |
| 01521531R | 1 RD PERM GVB.ALUM | 0.038 | 3.49 | 0.456 | 0.02 | 9.53 | 12.70 | 3.18 | |||
| 01500561R | 1 RD PERM NONMETALC | 0.038 | 4.49 | 0.916 | 0.041 | 12.70 | 15.88 | 3.18 | 10.95 | 17.63 | 5.05 |
| 01520561R | 1 RD PERM GVB ALUMINUM | 0.038 | 4.49 | 0.916 | 0.041 | 12.70 | 15.88 | 3.18 | |||
| 01501532R | 2 RD PERM NONMETALC | 0.043 | 3.49 | 0.456 | 0.02 | 9.53 | 12.70 | 3.18 | 7.95 | 14.45 | 5.05 |
| 01513745R | 1/2 RD PERM ALUMINUM | 0.043 | 7.48 | - | - | 22.23 | 25.40 | 3.18 | |||
| 01523745R | 1/2 RD PERM GVB ALUM | 0.043 | 7.48 | - | - | 22.23 | 25.40 | 3.18 | |||
| 01500564R | 4 RD PERM NONMETALIC | 0.045 | 4.49 | 0.916 | 0.041 | 12.70 | 15.88 | 3.18 | 10.95 | 17.63 | 5.05 |
| 01520005R | 1/2 RD PERM GVB.ALUM | 0.05 | 4.99 | 0.916 | 0.081 | 12.70 | 19.05 | 3.18 | |||
| 01521551R | 1 RD PERM GVB.ALUM | 0.076 | 3.99 | 0.724 | 0.061 | 11.13 | 14.30 | 6.35 | |||
| 01520631R | 1 RD PERM GVB ALUM | 0.076 | 5.98 | - | - | 15.88 | 22.23 | 3.18 | |||
| 01520021R | 1 RD PERM GVB ALUM | 0.076 | 6.18 | 1.676 | 0.142 | 16.51 | 22.86 | 3.18 | |||
| 01520111R | 1 RD PERM GVB ALUM | 0.076 | 8.97 | 4.238 | 0.365 | 25.40 | 31.75 | 3.18 | |||
| 01500002R | 2 RD PERM NONMETALC | 0.086 | 4.99 | 0.916 | 0.081 | 12.70 | 19.05 | 3.18 | 10.95 | 20.80 | 5.05 |
| 01510002R | 2 RD PERM ALUMINUM | 0.086 | 4.99 | 0.916 | 0.081 | 12.70 | 19.05 | 3.18 | |||
| 01500022R | 2 RD PERM NONMETALC | 0.086 | 6.18 | 1.676 | 0.142 | 16.51 | 22.86 | 3.18 | 14.76 | 24.61 | 5.05 |
| 01501342R | 2 RD PERM NON-METALLIC | 0.086 | 6.98 | - | - | 19.05 | 25.40 | 3.18 | |||
| 01500004R | 4 RD PERM NONMETALC | 0.091 | 4.99 | 0.916 | 0.081 | 12.70 | 19.05 | 3.18 | 10.95 | 20.80 | 5.05 |
| 01520004R | 4 RD PERM GVB. ALUM | 0.091 | 4.99 | 0.916 | 0.081 | 12.70 | 19.05 | 3.18 | |||
| 01549732R | 2 RD PERM ENCAPSULD | 0.101 | 2.7 | - | - | 6.10 | 11.07 | 4.78 | |||
| 01549562R | 2 RD PERM ENCAPSULD | 0.119 | 3.31 | - | - | 7.62 | 13.46 | 4.78 | |||
| 01520032R | 2 RD PERM GVB ALUM | 0.129 | 6.73 | - | - | 19.05 | 23.83 | 6.35 | |||
| 01549702R | 2 RD PERM ENCAP | 0.131 | 4.77 | - | - | 11.94 | 18.42 | 4.78 | |||
| 01501761R | 1 RD PERM NONMETALC | 0.151 | 4.99 | 0.916 | 0.157 | 12.70 | 19.05 | 6.35 | 10.95 | 20.80 | 8.23 |
| 01501762R | 2 RD PERM NONMETALC | 0.171 | 4.99 | 0.916 | 0.157 | 12.70 | 19.05 | 6.35 | 10.95 | 20.80 | 8.23 |
| 01500612R | 2 RD PERM NONMETALC | 0.171 | 6.98 | 2.273 | 0.39 | 19.05 | 25.40 | 6.35 | 17.04 | 27.41 | 8.48 |
| 01500334R | 4 RD PERM NONMETALLIC | 0.182 | 5.98 | 1.534 | 0.263 | 15.88 | 22.23 | 6.35 | 14.12 | 23.98 | 8.23 |
| 01500044R | 4 RD PERM NONMETALC SK | 0.182 | 8.97 | 4.238 | 0.724 | 25.40 | 31.75 | 6.35 | 23.39 | 33.76 | 8.48 |
| 01520764R | 4 RD PERM GVB.ALUM | 0.205 | 6.48 | 1.478 | 0.284 | 15.88 | 25.40 | 4.78 | |||
| 01503232R | 2 RD PERM NONMETALC | 0.206 | 21.14 | 29.407 | 6.06 | 63.50 | 71.12 | 6.35 | 59.16 | 75.46 | 10.41 |
| 01522851R | 1 RD PERM GVB. ALUM | 0.227 | 8.47 | - | - | 22.23 | 31.75 | 6.35 | |||
| 01520291R | 1 RD PERM GVB ALUMINUM | 0.227 | 9.47 | 4.438 | 1.09 | 25.40 | 34.93 | 6.35 | |||
| 0153A292R | 2 RD. PERM. BARE | 0.228 | 7.31 | - | - | 19.05 | 27.51 | 6.35 | |||
| 01500341R | 1 RD PERM NONMETALC | 0.34 | 7.48 | 2.273 | 0.876 | 19.05 | 28.58 | 9.53 | 17.04 | 30.58 | 11.66 |
| 01520341R | 1 RD PERM GVB.ALUM | 0.34 | 7.48 | 2.273 | 0.876 | 19.05 | 28.58 | 9.53 | |||
| 0153A392R | 2 RD PERM BARE | 0.342 | 9.3 | - | - | 25.40 | 33.86 | 9.53 | |||
| 01521672R | 2 RD PERM ALUM GVB | 0.343 | 6.98 | - | - | 15.88 | 28.58 | 6.35 | |||
| 01521812R | 2 RND PERM GVB ALUM | 0.386 | 8.47 | 3.16 | 1.22 | 22.23 | 31.75 | 9.53 | |||
| 01500944R | 4 RD PERM NONMETALC | 0.408 | 6.48 | 1.534 | 0.592 | 15.88 | 25.40 | 9.53 | 13.87 | 27.41 | 11.66 |
| 01503154R | 4 RD PERM NONMETALLIC | 0.409 | 12.46 | - | - | 34.93 | 44.45 | 9.53 | |||
| 01523154R | 4 RD PERM GVB ALUM | 0.409 | 12.46 | - | - | 34.93 | 44.45 | 9.53 | |||
| 01520261R | 1 RD PERM GVB ALUM | 0.454 | 9.97 | 4.238 | 2.18 | 25.40 | 38.10 | 9.53 | |||
| 01500262R | 2 RD. PERM NONMETALC | 0.514 | 9.97 | 4.238 | 2.18 | 25.40 | 38.10 | 9.53 | 22.89 | 40.61 | 12.17 |
| 01520262R | 2 RD PERM GVB.ALUM | 0.514 | 9.97 | 4.238 | 2.18 | 25.40 | 38.10 | 9.53 | |||
| 01500982R | 2 RD PERM NONMETALC | 0.514 | 11.96 | - | - | 31.75 | 44.45 | 9.53 | |||
| 01520551R | 1 RD PERM GVB.ALUM | 0.605 | 13.96 | 9.924 | 6.81 | 38.10 | 50.80 | 12.70 | |||
| 01520911R | 1 RD PERM GVB ALUMINUM | 0.606 | 10.97 | - | - | 28.58 | 41.28 | 12.70 | |||
| 01504812R | 2 RD PERM NONMETALIC | 0.685 | 7.98 | - | - | 19.05 | 31.75 | 12.70 | |||
| 01500912R | 2 RD PERM NON-METALLIC | 0.685 | 10.97 | - | - | 28.58 | 41.28 | 12.70 | |||
| 01500354R | 4 RD PERM NONMETALC | 0.726 | 11.96 | 6.815 | 4.67 | 31.75 | 44.45 | 12.70 | 29.18 | 47.02 | 15.42 |
| 01540354R | 4 RD PERM ENCAPSULD | 0.726 | 11.96 | 6.815 | 4.67 | 31.75 | 44.45 | 12.70 | |||
| 01503454R | 4 RD PERM NON-METALLIC | 0.726 | 15.95 | 13.787 | 9.46 | 44.45 | 57.15 | 12.70 | 41.12 | 60.48 | 15.93 |
| 01524254R | 4 RD PERM GVB ALUMINUM | 0.817 | 12.96 | 6.815 | 5.26 | 31.75 | 50.80 | 9.53 | |||
| 01501031R | 1 RD PERM NON METALLIC | 1.21 | 19.94 | 17.894 | 24.5 | 50.80 | 76.20 | 12.70 | 47.47 | 79.53 | 15.93 |
| 01510151R | 1 RD PERM ALUM | 1.21 | 11.96 | - | - | 63.50 | 69.85 | 4.78 | |||
| 01500012R | 2 RD PERM NONMETALIC | 1.371 | 15.95 | 9.64 | 13.2 | 38.10 | 63.50 | 12.70 | 34.77 | 66.83 | 15.93 |
| 01501032R | 2 RD PERM NON METALLIC | 1.371 | 19.94 | 17.894 | 24.5 | 50.80 | 76.20 | 12.70 | 47.47 | 79.53 | 15.93 |
| 01505554R | 4 RD PERM NON-METALLIC | 1.452 | 13.96 | 6.699 | 9.19 | 31.75 | 57.15 | 12.70 | 28.42 | 60.48 | 15.93 |
| 01500014R | 4 RD PERM NONMETALC | 1.452 | 15.95 | 9.64 | 13.2 | 38.10 | 63.50 | 12.70 | 34.77 | 66.83 | 15.93 |
| 01501034R | 4 RD PERM NONMETALC | 1.452 | 19.94 | 17.894 | 24.5 | 50.80 | 76.20 | 12.70 | 47.47 | 79.53 | 15.93 |
| 01531992R | 2 RD PERM UNCASED | 2.056 | 13.96 | - | - | 31.75 | 57.15 | 19.05 |
| Part Number | Description | Core Area cm2 |
Le Path Length cm |
Boxed ID min mm |
Boxed OD max mm |
Boxed HT max mm |
Maxwells |
| 805315R016000 | SS 531 1/2 RD PERM 0160MX | 3.2 | 8.763 | 12.192 | 4.699 | 160 | |
| 806135R040000 | SS 613 1/2 RD PERM 0400MX | 3 | 7.239 | 12.954 | 4.699 | 400 | |
| 805171R060000 | SS 517 1 RD PERM 0600MX | 3.3 | 8.6868 | 12.954 | 8.128 | 600 | |
| 806005R064000 | SS 600 1/2 RD PERM 0640MX | 2.9 | 7.112 | 12.192 | 8.128 | 640 | |
| 806191R080000 | SS 619 1 RD PERM 0800MX | 3.9 | 10.16 | 15.367 | 8.128 | 800 |