Part Details for R45203.5 by Littelfuse Inc
Results Overview of R45203.5 by Littelfuse Inc
- Distributor Offerings: (5 listings)
- Number of FFF Equivalents: (1 replacement)
- CAD Models: (Request Part)
- Number of Functional Equivalents: (7 options)
- Part Data Attributes: (Available)
- Reference Designs: (Not Available)
Tip: Data for a part may vary between manufacturers. You can filter for manufacturers on the top of the page next to the part image and part number.
R45203.5 Information
R45203.5 by Littelfuse Inc is an Electric Fuse.
Electric Fuses are under the broader part category of Circuit Protection Components.
Circuit protection components monitor and safeguard electronic systems from overcurrent, overvoltage, and other electrical hazards. Read more about Circuit Protection Components on our Circuit Protection part category page.
Price & Stock for R45203.5
| Part # | Distributor | Description | Stock | Price | Buy | |
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Bristol Electronics | 4983 |
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RFQ | ||
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Bristol Electronics | 996 |
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RFQ | ||
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Quest Components | ELECTRIC FUSE, SLOW BLOW, 3.5A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT | 3986 |
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$0.7500 / $2.5000 | Buy Now |
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Quest Components | ELECTRIC FUSE, SLOW BLOW, 3.5A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT | 796 |
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$1.0000 / $2.5000 | Buy Now |
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Quest Components | ELECTRIC FUSE, SLOW BLOW, 3.5A, 125VAC, 125VDC, 50A (IR), SURFACE MOUNT | 30 |
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$0.9000 / $1.5000 | Buy Now |
Part Details for R45203.5
R45203.5 CAD Models
R45203.5 Part Data Attributes
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R45203.5
Littelfuse Inc
Buy Now
Datasheet
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Compare Parts:
R45203.5
Littelfuse Inc
Electric Fuse, Slow Blow, 3.5A, 125VAC, 125VDC, 50A (IR), Surface Mount
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| Rohs Code | No | |
| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | LITTELFUSE INC | |
| Reach Compliance Code | unknown | |
| ECCN Code | EAR99 | |
| HTS Code | 8536.10.00.40 | |
| Additional Feature | RATED BREAKING CAPACITY AT 125 VDC: 50A | |
| Blow Characteristic | SLOW | |
| Body Breadth | 2.69 mm | |
| Body Height | 2.69 mm | |
| Body Length or Diameter | 6.1 mm | |
| Circuit Protection Type | ELECTRIC FUSE | |
| JESD-609 Code | e0 | |
| Joule Integral-Nom | 26 J | |
| Mounting Feature | SURFACE MOUNT | |
| Operating Temperature-Max | 125 °C | |
| Operating Temperature-Min | -55 °C | |
| Packing Method | TAPE AND REEL | |
| Rated Breaking Capacity | 50 A | |
| Rated Current | 3.5 A | |
| Rated Voltage(AC) | 125 V | |
| Rated Voltage(DC) | 125 V | |
| Reference Standard | CSA; UL | |
| Surface Mount | YES | |
| Terminal Finish | Tin/Lead (Sn/Pb) | |
| Terminal Shape | END CAP |
Alternate Parts for R45203.5
This table gives cross-reference parts and alternative options found for R45203.5. The Form Fit Function (FFF) tab will give you the options that are more likely to serve as direct pin-to-pin alternates or drop-in parts. The Functional Equivalents tab will give you options that are likely to match the same function of R45203.5, but it may not fit your design. Always verify details of parts you are evaluating, as these parts are offered as suggestions for what you are looking for and are not guaranteed.
| Part Number | Manufacturer | Composite Price | Description | Compare |
|---|---|---|---|---|
| 045203.5L | Littelfuse Inc | Check for Price | Electric Fuse, Slow Blow, 3.5A, 125VAC, 125VDC, 50A (IR), Surface Mount, ROHS COMPLIANT | R45203.5 vs 045203.5L |
R45203.5 Frequently Asked Questions (FAQ)
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Littelfuse recommends a symmetrical PCB layout with a central ground plane to minimize electromagnetic interference (EMI) and ensure optimal performance. A minimum of 1 oz copper thickness and a 1.6 mm (0.063 in) PCB thickness are also recommended.
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While the datasheet specifies an operating temperature range of -40°C to 150°C, Littelfuse recommends derating the device's current rating by 1.5% per °C above 125°C to ensure reliable operation in high-temperature environments.
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Yes, R45203.5 is suitable for high-frequency applications up to 1 MHz. However, it's essential to consider the device's parasitic inductance and capacitance, as well as the PCB layout, to minimize high-frequency losses and ensure optimal performance.
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Littelfuse recommends a soldering process with a peak temperature of 260°C (500°F) and a dwell time of 10-15 seconds to prevent thermal damage to the device. A solder with a melting point above 217°C (423°F) is also recommended.
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R45203.5 is designed to withstand overvoltage conditions up to 1.5 times the rated voltage for a short duration. In overcurrent conditions, the device will limit the current to prevent damage. However, it's essential to implement external protection mechanisms, such as fuses or circuit breakers, to prevent damage from sustained overcurrent conditions.