参数资料
| 型号： | 1206SFS700F/24-2 |
| 厂商： | TE Connectivity |
| 文件页数： | 2/28页 |
| 文件大小： | 0K |
| 描述： | FUSE 7.0A 24V SLOW SMD 1206 |
| 产品培训模块： | Circuit Protection Products |
| 产品目录绘图： | 1206S(FF,FH,FS) Series Footprint 1206S(FH,FS) Series |
| 标准包装： | 1 |
| 系列： | 1206SFS |
| 保险丝类型： | 板安装（不包括管筒式） |
| 额定电流： | 7A |
| 额定电压 - DC： | 24V |
| 响应时间： | 慢速 |
| 封装/外壳： | 1206（3216 公制） |
| 安装类型： | 表面贴装 |
| 尺寸/尺寸： | 0.126" L x 0.063" W x 0.046" H（3.20mm x 1.60mm x 1.17mm） |
| 额定电压时的断路容量： | 60A |
| 熔化 I²t： | 10 |
| 批准： | UL |
| 工作温度： | -55°C ~ 125°C |
| 包装： | * |
| DC 抗冷流： | 0.01 欧姆 |
| 产品目录页面： | 2405 (CN2011-ZH PDF) |
| 其它名称： | 1206SFS700F/24DKR |
第1页当前第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
Temperature Derating
A fuse is a temperature sensitive device. Therefore, operating temperature will have an effect on fuse performance and lifetime.
Operating temperature should be taken into consideration when selecting the fuse current rating. The Thermal Derating Curve for
surface mount fuses is presented in Figure 4. Use it to determine the derating percentage based on operating temperature and
apply it to the derated system current.
Figure 4
105
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
0
1206/0603/0402 Series
Temperature Effect on Current Rating
110 0
105 5
100 0
95 5
90 0
85 5
80 0
75 5
70 0
65 5
60 0
55 5
50 0
2410 Series
Temperature Effect On Current Rating
-55
-35
-15
5
25
45
65
85 5
105
125
145 5
-55
-35
-15
5
25
45
65
85
105
125
Maximum Operating Temperature (°C)
Pulse Cycle Derating
Once the I 2 t value for the application waveform has been
determined, it must be derated based on the number of cycles
expected over the system lifetime. Since the stress induced by the
Figure 5
100%
Maximum Operating Temperature (°C)
Surface-mount Fuse Pulse Derating Curve
current pulse is mechanical in nature, the number of times the
stress is applied has significant bearing on how much derating
must be applied to the fuse rating. Figure 5 presents the current
pulse derating curve for our surface-mount chip fuses up to
100,000 cycles.
10%
100
1000
10000
100000
Number of Pulses
Selecting Surface-mount Fuses
11
Fuse selection seems straightforward, in that, you pick one which has a current rating just a bit higher than your worstcase system
operating current. Unfortunately, it’s not that simple. There are derating considerations for operating current and application
temperature. Turn-on and other system operations (like processor speed changes or motor start up) cause current surges or
spikes that also require consideration when selecting a fuse. So selecting the right fuse for your application is not as simple as
knowing the nominal current drawn by the system.
Fuse Selection Flowchart
However, the basic considerations for fuse selection are shown in the flowchart presented in Figure 6. Following this flow chart
will help you select a fuse best suited for your application conditions.
Figure 6
Step 1 –
Determine Steady State
Fuse Current Rating
Apply Standard Steady
State Derating (75%)
[I fuse ≥ I sys /0.75]
Apply
Temperature Derating
[I fuse ≥ I sys /0.75/K temp ]
Steady State
Fuse Current
Rating
Step 2 –
Determine Pulse
Waveform by
Calculating I 2 t
Step 3 –
Apply Pulse
Cycle Derating
Step 4 –
Apply Pulse
Temperature
Derating
Step 5 –
Apply Derating
for Variance in
the Circuit
Step 6 –
Select Fuse Current
Rating for Pulse
Environment
76
Step 7 – Select Fuse Current Rating
(use higher value between Step 1 and Step 6)
Step 8 – Check Voltage Rating
相关PDF资料 |
PDF描述 |
|---|---|
| TSW-141-07-L-S | CONN HEADER 41POS .100" SGL GOLD |
| SSQ-148-01-S-D | CONN RCPT .100" 96POS DUAL GOLD |
| 1206SFS200F/63-2 | FUSE 2.0A 63V SLOW SMD 1206 |
| 5-103233-5 | 12 MODII HDR DRST UNSHRD A/PIN |
| SSW-148-21-S-D | CONN RCPT .100" 96POS DUAL GOLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 1206SFS700FM/24 | 制造商:Tyco Electronics (CPD) 功能描述:X[u[^ 7A 0.010 10.00(A2s) 24V 60A 3.2~1.6~1.1mm Cut Tape |
| 1206SFS700FM/24-2 | 功能描述:保险丝 SLO-BLO GLASS CER 24V 7A SZ 1206 RoHS:否 制造商:Littelfuse 产品:Surface Mount Fuses 电流额定值:0.5 A 电压额定值:600 V 保险丝类型:Fast Acting 保险丝大小/组:Nano 尺寸:12.1 mm L x 4.5 mm W 安装风格: 端接类型:SMD/SMT 系列:485 |
| 1206SFS800F/24-2 | 功能描述:保险丝 Slow Blow RoHS:否 制造商:Littelfuse 产品:Surface Mount Fuses 电流额定值:0.5 A 电压额定值:600 V 保险丝类型:Fast Acting 保险丝大小/组:Nano 尺寸:12.1 mm L x 4.5 mm W 安装风格: 端接类型:SMD/SMT 系列:485 |
| 1206SFS800FM/24-2 | 功能描述:保险丝 SLO-BLO GLASS CER 24V 8A SZ 1206 RoHS:否 制造商:Littelfuse 产品:Surface Mount Fuses 电流额定值:0.5 A 电压额定值:600 V 保险丝类型:Fast Acting 保险丝大小/组:Nano 尺寸:12.1 mm L x 4.5 mm W 安装风格: 端接类型:SMD/SMT 系列:485 |
| 1206SFV1.50FM/065-2 | 功能描述:FUSE BOARD MOUNT 1206 制造商:littelfuse inc. 系列:* 零件状态:新产品 标准包装:3,500 |
发布紧急采购，3分钟左右您将得到回复。