Part A
0466002.NR
リテルヒューズ社
- Lifecycle
- Active
- Stock
- 2802 個数
- Package
- 1206 (3216 Metric)
- Series
- ヒューズ
Replacement verdict
Compatible functional replacement candidate
The 0466002.NR is a compatible functional replacement candidate for the 0466003.NR, with identical current rating, voltage rating, and package type, though the lower breaking capacity requires validation against the target application's fault-current requirements.
Current Rating
High match
Voltage Rating
High match
Package Type
High match
Breaking Capacity
Validation required
Parts at a glance
Part B
0466003.NRHF
リテルヒューズ社
- Lifecycle
- Active
- Stock
- 6255 個数
- Package
- 1206 (3216 Metric)
- Series
- ヒューズ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 0466003.NRHF | 0466002.NR | Why it matters |
|---|---|---|---|
| Current Rating | 3 A | 2 A | Determines the maximum continuous current the fuse can carry without opening; a lower-rated fuse may open prematurely in the same circuit. |
| Voltage Rating | 32 V | 32 V | Defines the maximum circuit voltage the fuse can safely interrupt; must meet or exceed the application voltage. |
| Breaking Capacity | 50 A | 50 A | Indicates the maximum fault current the fuse can safely clear without damage or hazard. |
| Nominal Cold Resistance | 0.0245 Ohm | 0.0435 Ohm | Affects voltage drop and power dissipation in normal operation; lower resistance reduces losses and heating. |
| Melting I²t | 1.28 A²s | 0.42 A²s | Governs the energy required to open the fuse during a fault; influences coordination with downstream components and inrush tolerance. |
| Fuse Type | Fast-Acting | Fast-Acting | Determines response speed to overcurrent events; fast-acting types protect sensitive components quickly. |
| Package Size | 1206 | 1206 | Must match the PCB footprint for physical compatibility and assembly. |
| Operating Temperature Range | -55°C to +90°C | -55°C to +90°C | Ensures reliable operation and correct fusing characteristics across the application’s thermal environment. |
| Approvals / Standards | UL Recognized, CSA Certified | UL Recognized, CSA Certified | Confirms the fuse meets recognized safety and regulatory requirements for the target market. |
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 | 0466003.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 | 3 A |
| Voltage Rating - AC | 63 V | 32 V |
| Voltage Rating - DC | 63 V | 32 V |
| Response Time | Fast Blow | Fast Blow |
| Breaking Capacity @ Rated Voltage | 50A | 50A |
| Melting I²t | 0.2326 | 0.576 |
| Approval Agency | CSA, UL | CSA, UL |
| Operating Temperature | -55°C ~ 90°C | -55°C ~ 90°C |
Frequently asked questions
What are the 0466003.NRHF and 0466002.NR components?
The 0466003.NRHF and 0466002.NR are surface-mount fuses from Littelfuse's 466 series, designed for overcurrent protection in electronic circuits. The 0466003.NRHF is a 3 A rated fuse, while the 0466002.NR is a 2 A rated fuse, both in a 1206 (3216 metric) package size.
What is the current rating difference between the 0466003.NRHF and 0466002.NR?
The 0466003.NRHF has a current rating of 3 A, whereas the 0466002.NR has a current rating of 2 A. This 1 A difference is the primary distinction between the two fuses and determines the maximum continuous current each can carry without opening.
Do the 0466003.NRHF and 0466002.NR share the same voltage rating?
Yes, both the 0466003.NRHF and 0466002.NR have a voltage rating of 32 V AC/DC, as specified in the Littelfuse 466 series datasheet. This rating applies to both models regardless of their current rating difference.
Are the 0466003.NRHF and 0466002.NR interchangeable in a circuit design?
No, they are not directly interchangeable because they have different current ratings (3 A vs 2 A). Substituting one for the other would alter the overcurrent protection threshold, potentially causing nuisance opening or inadequate protection. The correct fuse must be selected based on the circuit's normal operating current and desired trip point.
What is the interrupting rating of the 0466003.NRHF and 0466002.NR?
Both the 0466003.NRHF and 0466002.NR have an interrupting rating of 50 A at 32 V AC/DC, according to the Littelfuse 466 series datasheet. This rating indicates the maximum fault current the fuse can safely interrupt without damage or hazardous failure.
What package size and mounting type do the 0466003.NRHF and 0466002.NR use?
Both fuses are supplied in a 1206 (3216 metric) surface-mount package, with a footprint of approximately 3.2 mm x 1.6 mm. They are designed for reflow soldering and are compatible with standard SMT assembly processes.
What are the typical applications for the 0466003.NRHF and 0466002.NR?
These fuses are commonly used for overcurrent protection in battery packs, power supplies, consumer electronics, and portable devices. The 0466003.NRHF (3 A) suits higher-current rails, while the 0466002.NR (2 A) is appropriate for lower-current circuits, as indicated by their respective current ratings.
Do the 0466003.NRHF and 0466002.NR have the same operating temperature range?
Yes, both the 0466003.NRHF and 0466002.NR are rated for an operating temperature range of -55°C to +125°C, as stated in the Littelfuse 466 series datasheet. This range is identical for both current ratings.