MST 250
Fuses
https://www.schurter.com /PG01_2
Subminiature Fuse, 8.5 mm, Time-Lag T, 250 VAC, 63 VDC
Subminiature fuse 8.5 mm, time-lag T,
250 VAC
Short terminal
Subminiature fuse 8.5 mm, time-lag T,
250 VAC
Terminal long
PCB
IEC 60127-3 · 250 VAC · Time-Lag T
Description
- Directly solderable on printed circuit boards
- Low Breaking Capacity
See below:
Approvals and Compliances
Applications
- Primary Protection on PCB
- Power Supply Adapter for e.g. laptops
- SMPS (Switching Mode Power Supply) for TV's and DVD's
References
Corresponding Fuseholder
Fuse Kit Fuse Kit MST250 / MSF 250
Weblinks
pdf data sheet, html datasheet, General Product Information, DistributorStock-Check, Detailed request for product
Technical Data
Rated Voltage
Rated current
Breaking Capacity
Characteristic
Mounting
Admissible Ambient Air Temp.
Climatic Category
Material: Housing
Material: Terminals
Unit Weight
Storage Conditions
Product Marking
250 VAC, 63 VDC
0.05 - 6.3 A
35 A - 63 A
Time-Lag T
PCB,THT
-55 °C to 125 °C
55/125/21 acc. to IEC 60068-1
Thermoplastic, UL 94V-0
Tin-Plated Copper
0.53 g
0 °C to 40 °C, max. 70% r.h.
, Type, Rated current, Rated Voltage,
Characteristic, Certification marks
Soldering Methods
Solderability
Resistance to Soldering Heat
Case Resistance
Flammability
Current Carrying Capacity
Moisture Resistance Test
Vibration, High Frequency
Mechanical Shock
Resistance to Solvents
Terminal Strength
Wave
Soldering Profile
235 °C / 2 sec acc. to IEC 60068-2-20,
Test Ta
260 °C / 10 sec acc. to IEC 60068-2-20,
Test Tb
acc. to EIA/IS-722, Test 4.7
>100 MΩ (between leeds and body)
UL 94V-0
(acc. to EIA/IS-722, Test 4.12)
acc. to EIA/IS-722, Test 4.3.3
MIL-STD-202, Method 106
(50 cycles in a temp./mister chamber)
MIL-STD-202, Method 204 Condition D
MIL-STD-202, Method 213 Condition A
MIL-STD-202, Method 215
Tensile load min. 9 N
(acc. to EIA/IS-722, Test 4.5.1)
Approvals and Compliances
Detailed information on product approvals, code requirements, usage instructions and detailed test conditions can be looked up in Details about
Approvals
SCHURTER products are designed for use in industrial environments. They have approvals from independent testing bodies according to national
and international standards. Products with specific characteristics and requirements such as required in the automotive sector according to IATF
16949, medical technology according to ISO 13485 or in the aerospace industry can be offered exclusively with customer-specific, individual agreements by SCHURTER.
Circuit Protection
1
MST 250
Fuses
https://www.schurter.com /PG01_2
Approvals
The approval mark is used by the testing authorities to certify compliance with the safety requirements placed on electronic products.
Approval Reference Type: MST 250
Approval Logo
Certificates
Certification Body
Description
VDE Approvals
VDE
VDE Certificate Number: 40046346
VDE Approvals
VDE
VDE Certificate Number: 40002080
UL Approvals
UL
UR File Number: E41599
CCC Approvals
CCC
CCC Certificate Number: 2020970207000096
KTL Approvals
KTL
Korea Testing Laboratory
METI Approvals
METI
Japan Electrical Safety and Environment technology Laboratories
Design
Standard
Description
Designed according to
IEC 60127-3/4
Miniature fuses - Part 3: Miniature fuse-links
Designed according to
UL 248-14
Low voltage fuses - Part 14: Additional fuses
Designed according to
CSA22.2 No. 248.14
Low-Voltage Fuses - Part 14: Supplemental Fuses
Design
Standard
Description
Designed for applications acc.
IEC/UL 62368-1
Audio/video, information and communication technology equipment - Part
1: Safety requirements
Details
Initiator
Description
CE declaration of conformity
SCHURTER AG
The CE marking declares that the product complies with the applicable
requirements laid down in the harmonisation of Community legislation on
its affixing in accordance with EU Regulation 765/2008.
UKCA declaration of conformity
SCHURTER AG
The UKCA marking declares that the product complies with the applicable
requirements laid down in the British Amendment of Regulation (EC)
765/2008.
RoHS
SCHURTER AG
Directive RoHS 2011/65/EU, Amendment (EU) 2015/863
China RoHS
SCHURTER AG
The law SJ / T 11363-2006 (China RoHS) has been in force since 1 March
2007. It is similar to the EU directive RoHS.
REACH
SCHURTER AG
On 1 June 2007, Regulation (EC) No 1907/2006 on the Registration,
Evaluation, Authorization and Restriction of Chemicals 1 (abbreviated as
"REACH") entered into force.
Product standards
Product standards that are referenced
Organization
Application standards
Application standards where the product can be used
Organization
Compliances
The product complies with following Guide Lines
Identification
Dimension [mm]
8.5 mm
ø 8.5
ø 0.64
5.08
0.5
8.5
+0.1
0
1
18.8
3.2
4.3
0.5
8.5
ø 8.5
5.08
3.2
ø 0.64
5.08
Drilling diagram
2
Circuit Protection
MST 250
Fuses
https://www.schurter.com /PG01_2
Derating Curves
140
120
100
80
60
40
20
-60
-40
-20
0
20
40
60
80
100
120
Pre-Arcing Time
Rated Current In
0.05 A - 6.3 A
1.5 x In min.
2.1 x In max.
60 min
120 s
2.75 x In min. 2.75 x In max.
400 ms
10 s
4.0 x In min.
4.0 x In max.
150 ms
3s
10.0 x In min. 10.0 x In max.
20 ms
150 ms
Time-Current-Curves
100000
10000
1000
Time in Seconds
100
10
1
0.1
0.01
0.001
10
1
Multiple of Rated Current In
All Variants
Rated Current [A]
Rated Voltage [VAC]
0.05
250
0.05
250
0.05
Breaking
Capacity
Voltage Drop
1.0 In max.
[mV]
Voltage Drop
1.0 In typ.
[mV]
Power Dissipation 1.5 In
max. [mW]
Melting I²t
10.0 In typ.
[A²s]
1)
550
415
155
0.03
l
l
l
l
1)
550
415
155
0.03
l
l
l
l
250
1)
550
415
155
0.03
l
l
l
l
0.063
250
1)
480
420
160
0.05
l
l
l
l
0.063
250
1)
480
420
160
0.05
l
l
l
l
0.063
250
1)
480
420
160
0.05
l
l
l
l
S
Circuit Protection
L
T Order Number
l
0034.6702
█
0034.6602
l
l 0034.6802
█
0034.6603
l
l
0034.6703
l 0034.6803
3
MST 250
Rated Current [A]
Rated Voltage [VAC]
0.08
250
0.08
250
Fuses
https://www.schurter.com /PG01_2
Breaking
Capacity
Voltage Drop
1.0 In max.
[mV]
Voltage Drop
1.0 In typ.
[mV]
Power Dissipation 1.5 In
max. [mW]
Melting I²t
10.0 In typ.
[A²s]
S
1)
400
360
165
0.06
l
l
l
l
1)
400
360
165
0.06
l
l
l
l
0.08
250
1)
400
360
165
0.06
l
l
l
l
0.1
250
1)
350
320
170
0.08
l
l
l
l
0.1
250
1)
350
320
170
0.08
l
l
l
l
0.1
250
1)
350
320
170
0.08
l
l
l
l
0.125
250
1)
300
270
180
0.12
l
l
l
l
0.125
250
1)
300
270
180
0.12
l
l
l
l
0.125
250
1)
300
270
180
0.12
l
l
l
l
0.16
250
1)
280
190
190
0.24
l
l
l
l
0.16
250
1)
280
190
190
0.24
l
l
l
l
0.16
250
1)
280
190
190
0.24
l
l
l
l
0.2
250
1)
260
150
200
0.35
l
l
l
l
0.2
250
1)
260
150
200
0.35
l
l
l
l
0.2
250
1)
260
150
200
0.35
l
l
l
l
0.25
250
1)
240
120
220
0.6
l
l
l
l
0.25
250
1)
240
120
220
0.6
l
l
l
l
0.25
250
1)
240
120
220
0.6
l
l
l
l
0.315
250
1)
220
120
250
0.8
l
l
l
l
0.315
250
1)
220
120
250
0.8
l
l
l
l
0.315
250
1)
220
120
250
0.8
l
l
l
l
0.4
250
1)
200
110
280
1.1
l
l
l
l
0.4
250
1)
200
110
280
1.1
l
l
l
l
0.4
250
1)
200
110
280
1.1
l
l
l
l
0.5
250
1)
190
100
310
2.5
l
l
l
l
0.5
250
1)
190
100
310
2.5
l
l
l
l
0.5
250
1)
190
100
310
2.5
l
l
l
l
0.63
250
1)
180
90
360
4
l
l
l
l
0.63
250
1)
180
90
360
4
l
l
l
l
0.63
250
1)
180
90
360
4
l
l
l
l
0.8
250
1)
160
80
430
8
l
l
l
l
0.8
250
1)
160
80
430
8
l
l
l
l
0.8
250
1)
160
80
430
8
l
l
l
l
1
250
1)
140
70
500
12
l
l
l
l
l
1
250
1)
140
70
500
12
l
l
l
l
l
1
250
1)
140
70
500
12
l
l
l
l
l
1.25
250
1)
130
70
600
15
l
l
l
l
l
1.25
250
1)
130
70
600
15
l
l
l
l
l
1.25
250
1)
130
70
600
15
l
l
l
l
l
1.6
250
1)
120
60
730
30
l
l
l
l
l
1.6
250
1)
120
60
730
30
l
l
l
l
l
1.6
250
1)
120
60
730
30
l
l
l
l
l
2
250
1)
100
60
870
34
l
l
l
l
l
2
250
1)
100
60
870
34
l
l
l
l
l
2
250
1)
100
60
870
34
l
l
l
l
l
2.5
250
1)
100
50
1000
55
l
l
l
l
l
2.5
250
1)
100
50
1000
55
l
l
l
l
l
2.5
250
1)
100
50
1000
55
l
l
l
l
l
3.15
250
1)
100
50
1200
76
l
l
l
l
l
3.15
250
1)
100
50
1200
76
l
l
l
l
l
3.15
250
1)
100
50
1200
76
l
l
l
l
l
4
250
2)
100
50
1400
80
l
l
l
l
l
4
250
2)
100
50
1400
80
l
l
l
l
l
4
Circuit Protection
L
T Order Number
l
0034.6704
0034.6604
l
█
l 0034.6804
0034.6605
l
l
█
0034.6705
l 0034.6805
0034.6606
l
l
█
0034.6706
l 0034.6806
0034.6607
l
l
█
0034.6707
l 0034.6807
0034.6608
l
l
█
0034.6708
l 0034.6808
0034.6609
l
l
█
0034.6709
l 0034.6809
0034.6610
l
l
█
0034.6710
l 0034.6810
0034.6611
l
l
█
0034.6711
l 0034.6811
l
l
l
l
l
l
0034.6612
█
0034.6712
█
l 0034.6812
█
0034.6613
█
0034.6713
l 0034.6813
█
0034.6614
█
0034.6714
l 0034.6814
0034.6615
l
l
l
l
█
0034.6715
l 0034.6815
█
0034.6616
█
0034.6716
l 0034.6816
0034.6617
l
l
█
0034.6717
l 0034.6817
0034.6618
l
l
l
l
█
0034.6718
l 0034.6818
█
0034.6619
█
0034.6719
l 0034.6819
0034.6620
l
l
█
0034.6720
l 0034.6820
0034.6621
l
l
0034.6721
█
MST 250
Fuses
https://www.schurter.com /PG01_2
Rated Current [A]
Rated Voltage [VAC]
Breaking
Capacity
Voltage Drop
1.0 In max.
[mV]
Voltage Drop
1.0 In typ.
[mV]
Power Dissipation 1.5 In
max. [mW]
Melting I²t
10.0 In typ.
[A²s]
S
4
250
2)
100
50
1400
80
l
l
5
250
3)
-
50
-
230
l
l
l
l
5
250
3)
-
50
-
230
l
l
l
l
l
l
5
250
3)
-
50
-
230
l
l
6.3
250
3)
-
45
-
360
l
l
l
L
l 0034.6821
l
6.3
250
3)
-
45
-
360
l
l
l
6.3
250
3)
-
45
-
360
l
l
l
█
0034.6622
l
l
0034.6722
l 0034.6822
l
l
T Order Number
█
0034.6623
l
l
0034.6723
l 0034.6823
█ Most Popular.
Availability for all products can be searched real-time:https://www.schurter.com/en/Stock-Check/Stock-Check-SCHURTER
1) IEC: 35 A @ 250 VAC
1) UL: 35 A @ 250 VAC / 50 A @ 63 VDC
2) IEC: 10 In @ 250 VAC
2) UL: 10 In @ 250 VAC / 50 A @ 63 VDC
3) IEC: 10 In @ 250 VAC
3) UL: 10 In @ 250 VAC / 10 In @ 63 VDC
Packaging Unit
S = 4.3 mm
L = 18.8 mm
T = 18.8 mm
100 pcs in ESD-plastic bag
100 St. (Bulk)
750 pcs. in tape [P = P0: 12.7; P1: 3.81; H1: 26.45] on reel [A: 360; W3: 40; W4: 52; C:
30.5]
21.03.2022
acc. IEC 60286-2
The specifications, descriptions and illustrations indicated in this document are based on current
information. All content is subject to modifications and amendments. Information furnished is believed
to be accurate and reliable. However, users should independently evaluate the suitability and test each
product selected for their own applications.
Circuit Protection
5
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