Part A
0466002.NR
Littelfuse Inc.
- Lifecycle
- Active
- Stock
- 2802 PCS
- Package
- 1206 (3216 Metric)
- Series
- Fuses
Replacement verdict
Compatible functional replacement candidate
The 0466002.NRHF is a RoHS-compliant, halogen-free variant of the 0466002.NR fuse, sharing identical electrical and dimensional characteristics. It is a direct functional replacement candidate, with the primary distinction being environmental compliance rather than performance.
Current Rating
High match
Voltage Rating
High match
Package Type
High match
Environmental Compliance
Validation required
Parts at a glance
Part B
0466002.NRHF
Littelfuse Inc.
- Lifecycle
- Active
- Stock
- 6527 PCS
- Package
- 1206 (3216 Metric)
- Series
- Fuses
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 0466002.NRHF | 0466002.NR | Why it matters |
|---|---|---|---|
| Series | 466 | 466 | Confirms both fuses belong to the same Littelfuse 466 series, ensuring physical and electrical compatibility. |
| Current Rating | 2 A | 2 A | The hold current determines the maximum continuous current the fuse can carry without opening. |
| Voltage Rating | 32 VAC / 32 VDC | 32 VAC / 32 VDC | The voltage rating must meet or exceed the circuit voltage to ensure safe interruption of fault currents. |
| Interrupting Rating | 50 A | 50 A | Defines the maximum fault current the fuse can safely break without damage or hazard. |
| Nominal Cold Resistance | 0.0285 Ohms | 0.0285 Ohms | Low resistance minimizes voltage drop and power loss in the protected circuit. |
| Nominal Melting I²t | 0.5 A²s | 0.5 A²s | I²t determines the energy required to open the fuse, critical for coordinating with inrush currents and other protection devices. |
| Operating Temperature Range | -55°C to +90°C | -55°C to +90°C | Ensures the fuse performs reliably across the application's environmental temperature extremes. |
| Mounting Type | Surface Mount | Surface Mount | Both are surface-mount devices, but the HF suffix indicates a halogen-free, RoHS-compliant construction. |
| Halogen-Free / RoHS | Yes (Halogen-Free, RoHS) | RoHS | The HF variant meets stricter halogen-free requirements, which matters for environmental compliance and certain industrial applications. |
| Package / Size | 1206 (3216 Metric) | 1206 (3216 Metric) | Identical footprint ensures either part can be placed on the same PCB pad layout. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 0466002.NR | 0466002.NRHF |
|---|---|---|
| Series | SlimLine™ 466 | SlimLine™ 466 |
| Part Status | Active | Active |
| Mounting Type | Surface Mount | Surface Mount |
| Fuse Type | Board Mount (Cartridge Style Excluded) | Board Mount (Cartridge Style Excluded) |
| Current Rating (Amps) | 2 A | 2 A |
| Voltage Rating - AC | 63 V | 63 V |
| Voltage Rating - DC | 63 V | 63 V |
| Response Time | Fast Blow | Fast Blow |
| Breaking Capacity @ Rated Voltage | 50A | 50A |
| Melting I²t | 0.2326 | 0.2326 |
| Approval Agency | CSA, UL | CSA, UL |
| Operating Temperature | -55°C ~ 90°C | -55°C ~ 90°C |
Frequently asked questions
What is the difference between 0466002.NRHF and 0466002.NR?
The 0466002.NRHF and 0466002.NR are both surface-mount fuses from Littelfuse's 466 series. The primary difference is the "HF" suffix on 0466002.NRHF, which indicates the part is halogen-free and RoHS-compliant. The 0466002.NR is the standard version. Both share the same electrical ratings, including a 2 A current rating and 32 V AC/DC voltage rating, but the HF variant meets additional environmental compliance requirements.
Are 0466002.NRHF and 0466002.NR electrically interchangeable?
Yes, both fuses have identical electrical specifications: 2 A rated current, 32 V AC/DC rated voltage, and the same breaking capacity. They are electrically interchangeable in circuits designed for the 466 series 2 A fuse. However, substitution should be validated against the specific application requirements and manufacturer documentation.
Do 0466002.NRHF and 0466002.NR have the same physical dimensions?
Yes, both parts are in the same 1206 (3216 metric) surface-mount package. They share identical footprint dimensions and PCB land patterns, allowing them to be used interchangeably without layout changes.
What does the "HF" suffix indicate on the 0466002.NRHF?
The "HF" suffix indicates that the 0466002.NRHF is a halogen-free version of the fuse. This means it does not contain halogenated flame retardants and meets specific environmental and safety requirements, often preferred for applications requiring low toxicity and reduced environmental impact.
Are both 0466002.NRHF and 0466002.NR RoHS compliant?
Yes, both the 0466002.NRHF and 0466002.NR are RoHS compliant. However, the 0466002.NRHF additionally meets halogen-free requirements, which may be necessary for certain applications or markets with stricter environmental regulations.
Can 0466002.NRHF be used as a direct drop-in replacement for 0466002.NR?
Yes, the 0466002.NRHF can be used as a direct drop-in replacement for the 0466002.NR in most applications because they share the same package, electrical ratings, and performance characteristics. The only difference is the halogen-free construction of the HF version, which does not affect form, fit, or function.
What are the typical applications for 0466002.NRHF and 0466002.NR?
Both fuses are typically used for overcurrent protection in a wide range of electronic devices, including consumer electronics, industrial equipment, and telecommunications systems. They are suitable for applications requiring a compact surface-mount fuse with a 2 A rating and 32 V AC/DC capability.
Are there any differences in breaking capacity between 0466002.NRHF and 0466002.NR?
No, both the 0466002.NRHF and 0466002.NR have the same breaking capacity rating as specified in the Littelfuse 466 series datasheet. The breaking capacity is identical because the internal fuse element and construction are the same, with only the halogen content differing.