1245 Quick Acting Leadless MELF Surface Mount Ceramic Fuse 60A
125VAC 63VDC For 5G Communication Power Supply
DESCRIPTION
SMD fuses can be divided into disposable SMD fuses and SMD
resettable fuses. After protection, the disposable fuse needs to be
replaced, and the power failure after protection can be
self-recovered and reused.
SMD fuse is a new product with high technical content in the small
fuse industry. SMD fuses can be divided into SMD current fuses and
SMD resettable fuses.
SMD current fuses can be divided into the following numbers
according to their size and performance:
(1) Product size can be divided into: 0603 0805 1206 6125 1032 1245
4512
(2) Products can be divided into three types according to their
properties: fast fusion, slow fusion and enhanced melting heat.
SMD resettable fuses can be classified by size as follows: SMD
packages are 0805 0603 1206 1210 1812 2920 2018
If chip fuses have high requirements, they are usually made of thin
films with ultra-low internal resistance and are suitable for
overcurrent protection such as surges. Computer peripheral
products, mobile phones and other communication equipment, digital
cameras, monitors, and batteries are commonly used. Manufacturers
who can use this technology have a certain scale.
SMD fuses can be divided into disposable SMD fuses and SMD
resettable fuses. The disposable fuse needs to be replaced after
protection, and the power failure after protection can be recovered
and reused
Typical Application
SMD fuse: used in power supplies, switching power supplies,
chargers, LED drive power supplies, LED lamps, 5G communication
power supplies, etc.
Electrical Tools
BMS
Battery
5G Telecom
Telecom power supply
Cloud computing supply
Server storage system
Battery management system
Energy storage system
AC Charging Pile
Features
- Fast Acting High current brick fuse
- Surface mount deign to save space
- Ceramic Suqare body with end cap design
- Designed to UL248-1/1
- High current rating available
- Low temperature de‐rating
- Wide operating temperature range
- RoHS compliant, Halogen Free
Part Numbering
Part No. | Ampere Rating | Voltage Rating | Breaking Capacity | Nominal Cold Resistance (Ohms) | I2TMelting Integral(A2.S) | Agency Approvals |
| UL | CUL |
R1245F.60 | 60A | 250V/125VAC/DC72V63V/32VDC | 200A@250VAC 500A:@125VAC 1000A@72V63V/32VDC | 0.000890 | 5275 |
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Standards and Agency Approvals
Standards:In accordance with UL 248-14.
Agency | Ampere Range | Agency File Number |
| UL | 15A ~ 100A | E502159 (JDYX2) |
| CUL | 15A ~ 100A | E502159 (JDYX8) |
Operation Time
% of Ampere Rating(In) | Blowing Time |
| 100% * In | 4 hours Min |
| 200% * In | 60 sec Max |
Breaking Capacity
200A @250VAC500A:@125VAC 1000A@72V63V/32VDC
Dimensional Drawing (Unit:mm)
NO. | Part Name | Material |
| 1 | End caps | Au Plated Brass Cap |
| 2 | Body | Non-Transparent Square Ceramic Tube |
| 3 | Fuse element | Cu-Ag Alloy wire |
Reliability
NO. | Item | Content | Reference standards |
| Product Marking | Brand, Ampere Rating | Marking standards |
| Operating Temperature | -55°C to 125°C | –55ºC to 125ºC with proper derating |
| Solderability | T=240°C±5±5°C , t=3sec±0.5sec, Coverage≥95% | MIL-STD-202, Method 208 |
| Resistance to Soldering Heat | 10 sec at 260°C | MIL-STD-202, Method 210, Test condition B |
| Insulation Resistance (after Opening) | 10,000 ohms minimum | MIL-STD-202, Method 302, Test Condition A |
| Thermal Shock | 5 cycles, -65°C / +125°C, 15 minutes at each extreme | MIL-STD-202, Method 107, Test Condition B |
| Mechanical Shock | 100G’s peak for 6 milliseconds, 3cycles | MIL-STD-202, Method 213, Test I |
| Vibration | 0.03”amplitude, 10-55 Hz in 1 min. 2hrs each XYZ=6hrs | MIL-STD-202, Method 201 |
| Moisture Resistance | 10 cycles | MIL-STD-202, Method 106 |
| Salt Spray | 5% salt solution, 48hrs | MIL-STD-202, Method 101, Test Condition B |
Why Choose us ?
1. The product quality is reliable, UL/UR/KC/PSE/CQC/VDE/RHOS and
other international and domestic product certifications;
2. Strong R&D capabilities, and can individually customize
various voltage and current non-standard size non-standard
products;
3. Large standing inventory, automated production, daily production
capacity of 800K, fast delivery;
4. The purchase cost is affordable, the domestic famous brand, the
price is 30% cheaper than the same international brand;
5. Many-to-one service, business, procurement, engineering and
other departments to serve you many-to-one;
6. Good brand reputation, politely recognized brand, free proofing;
7. Automatic production
Package
1500 pcs per inner box ,5 inner boxes per outer carton
Operating Time
FAQ
Q: What's the price ?
A: 0.6~0.8 US DOLLARS EA
Q: LEAD TIME ?
A: 7 DAYS
Q: AVAILABLE APPROVALS ?
A: UL AND CUL TILL NOW
Q: CAN YOU PROVIDE FREE SAMPLES TO VERIFY ?
A: YES, FREE SAMPLES BUT FREIGHT ON COLLECT.
Q: ARE YOU MANUFACTURER ?
A: YES, WE ARE GROUP COMPANY AND SPECILIZED IN PRODUCTION OF
ELECTRONICS COMPONENTS SUCH AS
FUSE,VARISTOR,THERMISTOR,INDUCTOR,TEMPERATURE SENSOR ,FUSE HOLDER
ETC.
