Littelfuse 370 User Manual

Radial Lead Fuses

TR5® > Fast-Acting > 370 Series

370 Series, TR5®, Fast-Acting Fuse

Agency Approvals

Agency Agency File Number Ampere Range

License number:
5007679-1170-0001/82438

License number:
5007679-1170-0001/97059
5007679-1170-0009/97069
5007679-1170-0002/82443

Certificate number:
1012264

File number:
E67006

JET0381-31007-2003 1A - 5A

2007010207240347 50mA - 5A

100mA - 5A

50mA - 80mA

50mA - 6.3A

40mA - 6.3A

40mA

6.3A

Description

The 370 Series are TR5®,sub-miniature,fast-acting type,
250V rated fuses, designed in accordance to IEC 60127-3.

Features

• ReducedPCBspace

requirements

• Directsolderableor
plug-in versions

• Internationallyapproved

• Vibrationresistant

• Halogenfree

• Lead-free

• Availablefrom40mA

to 6.3A

• Lowinternalresistance

• Shocksafecasing

Applications

• BatteryChargers

• ConsumerElectronics

• Powersupplies

• IndustrialControllers

Additional Information

Datasheet

Resources

Samples

Electrical Characteristics

% of Ampere

Rating

150% 1 Hour, Min.

210% 30 Minutes, Max.

275% 10 ms, Min. ; 3 Sec., Max.

400% 3 ms, Min. ; 300 ms, Max.

1000% 20 ms, Max.

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13

Opening Time

Electrical Characteristics

Radial Lead Fuses

TR5® > Fast-Acting > 370 Series

Amp

Code

Rated

Current

Voltage

Rating

0040 40mA 250V

Breaking Capacity

Voltage

Drop

1.0×I

N

max. (mV)

Power

Dissipation

1.5×I

N

max. (mW)

900 100 0.0002

Melting
Integral

10×I

max. (A

0050 50mA 250V 320 80 0.00035
0063 63mA 250V 350 100 0.0005
0080 80mA 250V 370 120 0.0014

0100 100mA 250V 600 130 0.0038
0125 125mA 250V 550 172 0.0066

0160 160mA 250V 500 165 0.014
0200 200mA 250V 465 190 0.03
0250 250mA 250V 400 250 0.051
0315 315mA 250V 380 250 0.1
0400 400mA 250V 120 135 0.025

35 A/ 250VAC

50-60 Hz cos ϕ = 1.0

1

0500 500mA 250V 120 155 0.042
0630 630mA 250V 115 200 0.076
0800 800mA 250V 120 310 0.12

110 0 1.00A 250V 110 310 0.2

112 5 1.25A 250V 100 360 0.31

116 0 1.60A 250V 100 600 0.53
1200 2.00A 250V 85 500 0.98
1250 2.50A 250V 80 660 1.8
1315 3.15A 250V 90 950 3.1
1400 4.00A 250V 40 A / 250 VAC 80 920 6.7
1500 5.00A 250V 50 A / 250 VAC 80 1000 12.00
1630 6.30A* 250V 63 A / 250 VAC 70 1200 24.00

1 Per UL, approved breaking capacity is 50 A at 250 V.
* Conducting path min. 0.2 mm
G = Expert Report pending
Note: 1.00 means the number one with two decimal places. 1,000 means the number one thousand.

2

Agency Approvals

N

2

s)

G X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X
X X X X X
X X X X X
X X X X X
X X X X X
X X X X X
X X X X X
X X X X X
X X X X X
G X X

140

120

100

80

60

40

PERCENTOF RATING

20

0

-40-20 020406080

23°C

AMBIENTTEMPERATURE(°C)

Average Time Current CurvesTemperature Rerating Curve

100000

100000

10000

10000

1000

1000

100

100

10

10

TIME IN SECONDS

TIME IN SECONDS

1

1

0.100

0.100

0.010

0.010

0.001

0.001

0.080A

0.080A

0.040A

0.125A

0.040A

0.125A

0.050A

0.063A

0.100A

0.050A

0.063A

0.100A

0.100 1 10 1000.02

0.100 1 10 1000.02

0.630A

1.60A

0.630A

0.160A

0.200A

0.250A

0.315A

0.400A

0.160A

0.200A

0.250A

0.315A

0.400A

CURRENT IN AMPERES

CURRENT IN AMPERES

1.60A

0.500A

0.800A

0.500A

0.800A

1.00A

1.25A

1.00A

1.25A

3.15A

4.00A

5.00A

6.30A

3.15A

4.00A

5.00A

6.30A

2.00A

2.50A

2.00A

2.50A

Specifications are subject to change without notice.

© 2013 Littelfuse, Inc.

Revised: 12/19/13

Radial Lead Fuses

300

240

Temperature (°C) - Measured on bottom side of board

∅ 8.5

TR5® > Fast-Acting > 370 Series

Soldering Parameters - Wave Soldering

280

260

240

220

200

180

160

140

120

100

80

60

40

20

0

0

102030405060708090

Time (Seconds)

Preheat Time

100

110

120

130

140

150

Dwell Time

Product Characteristics

Materials

Lead Pull Strength 10 N (EN 60068-2-21)

Solderability

Soldering Heat
Resistance

Base/Cap: Brown Thermoplastic
Polyamide PA 6.6, UL 94 V-0
Round Pins: Copper, Tin-plated

260ºC, ≤ 3s. (Wave)
350ºC, ≤ 1s. (Soldering Iron)

260ºC, 10s. (IEC 60068-2-20)
350ºC, 3s. (Soldering Iron)

160

170

Cooling Time

Recommended Process Parameters:

Wave Parameter Lead-Free Recommendation

Preheat:

(Depends on Flux Activation Temperature)

Temperature Minimum:
Temperature Maximum:

(Typical Industry Recommendation)

100

°C

150

°C

Preheat Time: 60-180 Seconds

Solder Pot Temperature:

260

°C Maximum

Solder Dwell Time: 2-5 Seconds

Recommended Hand-Solder Parameters:

180

190

200

210

220

230

Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.

Note: These devices are not recommended for IR or
Convection Reflow process.

Operating Temperature -40ºC to +85ºC (consider de-rating)

Climatic Category

Stock Conditions

Vibration Resistance

-40ºC to +85ºC/21 days
(IEC 60068-1,-2-1,-2-2,-2-78)

+10ºC to +60ºC
RH ≤ 75% yearly average, without
dew, maximum value for 30 days­95%

24 cycles at 15 min. each
(EN 60068-2-6)
10 - 60 Hz at 0.75 mm amplitude
60 - 2000 Hz at 10G acceleration

Dimensions

max. 8L

Packaging

Packaging Option Packaging Specification Quantity

370 Series

Tape & Ammopack N/A 1,000 0000 N/A

Short Leads N/A 1,000 0410 N/A

© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/19/13

∅ 0.6

5.08

Holes in PCB

Long Leads (L=18.8mm)
Short Leads (L=4.3mm)

0.5 min

1 +0.1

Part Numbering System

Series

Amp Code

Refer to Amp Code column of
Electrical Characteristics Table

Packaging Code

0000 Tape/Ammopack (1,000 pcs.)
0410 Short Leads - Bulk (1,000 pcs.)

Quantity &

Packaging Code

0000370 xxxx

Taping Width