1240FH-40A
Fast Acting High Current Brick Fuse
Ampere Rating 20-100A
Description
- Fast Acting High current brick fuse
- Surface mount deign to save space
- Ceramic Suqare body with end cap
- Designed to UL248-1
- Fully compatible with lead-free solder and high temperature profile associated with lead-free assembly
Applications
- Power battery protection
- Test equipment
- Power supplies
- Game systems
- Industrial equipment
- Telecom system
Electrical Characteristics
| Amp Rating | % of Amp Rating | Opening Time |
|---|---|---|
| 20~100A | 1.0 In | 4 hour min. |
| 2.0 In | <60s |
Specifications
| Part No. | Dimensions (mm) | Rated Current (A) | Breaking Capacity | Typ. Cold Resistance (mΩ) | Pre-Arcing I²t (A²s) |
|---|---|---|---|---|---|
| 1240FH-20A | 10 x 3.15 | 20 | 250Vac @ 150A 125Vac @ 150A 80Vdc @ 800A |
2.35 | 23 |
| 1240FH-25A | 10 x 3.15 | 25 | 2.12 | 45 | |
| 1240FH-30A | 10 x 3.15 | 30 | 1.51 | 98 | |
| 1240FH-40A | 12 x 4.5 | 40 | 125Vac @ 500A 72Vdc @ 1000A |
1.12 | 432 |
| 1240FH-50A | 12 x 4.5 | 50 | 0.97 | 596 | |
| 1240FH-60A | 12 x 4.5 | 60 | 0.66 | 873 | |
| 1240FH-80A | 12 x 4.5 | 80 | 0.48 | 1712 | |
| 1240FH-100A | 12 x 4.5 | 100 | 0.35 | 4166 |
- AC Interrupting Rating (Measured at designated voltage, 100% power factor random closing)
- DC InterruptingRating(Measuredatdesignatedvoltage timeconstantof lessthan50microseconds batterysource)
- Typical Pre-arching I2t are measured at 10In Current, DC battery bank, but not exceeding the interrupting rating, time constant of calibrated circuit less than 50 microseconds)
Dimension
Unit: mm
| Amp Rating | L | W | H |
|---|---|---|---|
| 20~30A | 10.0±0.30 | 1.7±0.10 | 3.15±0.10 |
| 40~100A | 12.30±0.40 | 2.70±0.20 | 4.50±0.20 |
Pad layout
20~30A 40~100A
20A-30A: Recommend trace thickness is 3oz, the minimum trace width is 10mm
40A-50A: Recommend trace thickness is 3oz, the minimum trace width is 15mm
60A 70A: Recommend trace thickness is 3oz, the minimum trace width is 22mm
60A-70A: Recommend trace thickness is 3oz, the minimum trace width is 22mm
80A-100A: Recommend trace thickness is 6oz, the minimum trace width is 33mm
Packaging
- 20A to 30A Quantity:1, 500pcs
- 40A to 100A Quantity:1, 000pcs
- 24mm wide tape on 330mm (13 inch) diameter reel -specification EIA Standard 481.
Soldering Parameters
Wave Soldering: 260°C, 10 seconds max.
Infrared Reflow: 260°C, 30 seconds max.
IR Reflow Profile
| Preheat Heat | |
|---|---|
| Temperature Min (Tsmin) | 150°C |
| Temperature Max (Tsmax) | 200°C |
| Time (Tsmin to Tsmax), ts | 60 – 120 seconds |
| Average Ramp-up Rate (Tsmax to Tp) | 3°C/second max. |
| Liquidous Temperature (TL) | 217°C |
| Time at Liquidous (tL) | 60 – 150 seconds |
| Peak Temperature (Tp) | 260+0/-5°C |
| Time within 5°C of Peak (tp) | 10 – 30 seconds |
| Average Ramp-down Rate (Tp to Tsmax) | 5°C/second max. |
| Total Time (25°C to Peak) | 8 minutes max. |
Temperature Re-rating Curve
- Normal Operating Temperature: 25°C ± 2 °C
- Operating Temperature: -55 to 125 with proper correction factor applied.
- Chart of correction factor.
Time-Current Curves
