1245（4.5x12）方头贴片保险丝

Description

The SMD1245 series is square Surface Mount fuses are designed for high-end cloud computing servers, telecom base station power supplies, block chain servers, and new energy vehicle battery management systems, ROHS compliant, Halogen Free and lead(Pb) exempts of the requirements of ROHS Directive(2002/95/EC), with U.S. (UL/CSA) safety agency approvals. Provide board level primary and secondary circuit protection in a wide variety of applications. With excellent inrush current withstanding capability, excellent reliability for thermal and mechanic shock, also have a high reliability and stable solder ability, the caps are available in gold/silver plated.

Features

• Available in ratings of 1 to 100A• High interrupting rating -600A@75VDC• Very low cold resistance,temperature rise, and voltage drop• High inrush/surge current withstand capability• Surface mountable high current fuse• UL 248-1 and UL 248-14 recognized• Conforms to IEC/EN 60127-1and IEC/EN 60127-7

Benefits

• Single fuse solution for high current application• Suitable for a wide variety of voltage requirement and application• Enhances power efficiency• Avoids nuisance opening due to high inrush and surge current inherent in the system• Compatible with high volume assembly requirements

Applications

• Voltage regulator module for PC server• Cooling fan system for PC server• Storage system power• Basestation power supply• Power tools

Material Details

NO.	Part Name	Material
1	End caps	Brass plated with gold/silver
2	Body	Ceramic Tube
3	Fuse	Alloy wire
4	Explosion proof sand	quartz sand

Electrical Characteristics for Series

% of Ampere rating	OpeningTime
100%	4 hours, Minimum
200%	60 sec., Max.

Electrical Specifications by Item

Ampere Rating (A)	Amp Code	MaxVoltage Rating(V)	Interrupting Rating	Nominal Cold Resistance (Ohms)	Nominal Melting I2t (A2sec)	Agency Approvals
Ampere Rating (A)	Amp Code	MaxVoltage Rating(V)	Interrupting Rating	Nominal Cold Resistance (Ohms)	Nominal Melting I2t (A2sec)	UL	TUV
1.00	001.	125VAC/DC 250VAC/DC 600VAC	100A@600VDC 100A@250VAC	0.1070	2.5	x	x
1.25	1.25			0.0830	5.6	x	x
1.60	01.6			0.0560	9.0	x	x
2.00	002.			0.0390	14.4	x	x
2.50	02.5			0.0260	19.6	x	x
3.15	3.15			0.0210	32.4	x	x
3.50	03.5			0.0190	38.70	x	x
4.00	004.			0.0160	48.40	x	x
5.00	005.			0.0130	90.00	x	x
6.30	06.3			0.0088	144.4	x	x
7.00	007			0.0075	165.6	x	x
8.00	008			0.0062	183.7	x	x
10.00	010			0.0058	203	x	x
15.00	012	125VAC/DC 250VAC/DC		0.0045	360	x	x
20.00	015			0.0033	563	x	x
25.00	025			0.0019	810	x	x
30.00	030			0.0016	1360	x	x
40.00	040	125VAC 72VDC	100A @ 125VAC 600A @ 75VDC 1000A @ 32VDC	0.0013	1600	x	x
50.00	050			0.00105	1950	x	x
60.00	060			0.00089	2887	x	x
80.00	080			0.00055	5270	x	x
100.00	100			0.00033	8080	x	x

Notes: 1. Cold resistance measured at less than 10% of rated current at 23°C.

2. Agency Approval Table Key: X=Approved or Certified, P=Pending.

3. I2 t values stated for 1 msec opening time.

4. Interrupting Rating may differ based on Agency Approval. See Agency Approval certificate for more details.

Temperature Re-rating Curve

Average Time Current Curves

Soldering Parameters

Reflow Condition	Pb – Free assembly
Pre Heat	- Temperature Min (Ts(min)) 150°C
	- Temperature Max (Ts(max)) 200°C
	- Time (Min to Max) (ts) 60 – 120 secs
Average ramp up rate (Liquidus Temp (TL) to peak	3°C/second max.
TS(max) to TL - Ramp-up Rate	3°C/second max.
Reflow	- Temperature (TL) (Liquidus) 217°C
Reflow	- Temperature (tL) 60 – 90 seconds
Peak Temperature (TP)	260+0/–5 °C
Time within 5°C of actual peak Temperature (tp)	20 – 40 seconds
Ramp-down Rate	5°C/second max.
Time 25°C to peak Temperature (TP)	8 minutes max.
Do not exceed	260°C
Wave Soldering Parameters	260°C Peak Temperature,3 seconds max.

Dimensions

Product Characteristics

编号

NO.

项目

Item

内容

Content

参考标准

Reference standards

产品标识

Product Marking

Brand, Ampere Rating

REOMAX marking standards

工作温度

Operating Temperature

-55°C to 125°C

–55ºC to 125ºC with proper derating

可焊性

Solderability

T=240°C±5°C , t=3sec±0.5sec,

Coverage≥95%

MIL-STD-202, Method 208

耐焊接热

Resistance to Soldering Heat

10 sec at 260°C

MIL-STD-202, Method 210, Test condition B

绝缘阻抗

Insulation Resistance (after Opening)

10,000 ohms minimum

5 cycles, -65°C / +125°C, 15 minutes at each extreme

MIL-STD-202, Method 302, Test Condition A

热冲击

Thermal Shock

MIL-STD-202, Method 107, Test Condition B

机械冲击

Mechanical Shock

100G’s peak for 6 milliseconds,

3cycles

MIL-STD-202, Method 213, Test I

振动试验

Vibration

0.03”amplitude, 10-55 Hz in 1

min. 2hrs each XYZ=6hrs

MIL-STD-202, Method 201

耐湿性

Moisture Resistance

10 cycles

MIL-STD-202, Method 106

盐雾试验

Salt Spray

5% salt solution, 48hrs

MIL-STD-202, Method 101, Test Condition B

Packaging

2,000 pcs in 13 inches dia. reel, 24mm wide tape, EIA Standard 481

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