Thermofuses
https://www.schurter.com /PG22
USN 1206
Thermal sensitive Fuse, SMD 1206, 32 VDC
32 VDC · PCB, SMT
Description
See below:
Approvals and Compliances
Applications
-
-
-
-
-
Secondary Protection DC and AC
Automotive electronics
Intrinsically safe electronics
Battery protection
In all electronics with temperature-critical components (eg Mosfet's)
- Temperature sensitive SMD fuse
- Customer-specific pre-arcing time characteristic as a function of ambi-
ent temperature
- Ensures the complete time-current curve from 0 A to BC
- Impermeable to potting compound used to achieve hermetic seal for
use in intrinsically safe applications according to ATEx and IECEx re-
quirements.
References
Weblinks
Unique Selling Proposition
Packaging Details
pdf datasheet, html-datasheet, General Product Information, Packaging
details, Distributor-Stock-Check, Detailed request for product, Landing
Page
- Combines a Standard Fuse characteristic with an additional ambient
temperature sensitivity
- Ceramic glase fiber inforced material
- Excellent inrush current withstand capability
- High melting I²t-values
Technical Data
Rated Voltage
Rated current
Breaking Capacity
Mounting
Admissible Ambient Air Temp.
Material: Housing
Material: Terminals
Unit Weight
Storage Conditions
Product Marking
32 VDC
12 A
170 A
PCB,SMT
-40 °C to 125 °C
Epoxyd Glass, UL 94V-0
Tin-Plated Copper
0.01 g
0 °C to 40 °C, max. 70% r.h.
Rated current
Soldering Methods
Solderability
Resistance to Soldering Heat
Moisture Resistance Test
Terminal Strength
Case Resistance
Resistance to Solvents
Flammability
Reflow
Soldering Profile
245 °C / 3 sec acc. to IEC 60068-2-58,
Test Td
260 +0/-5 °C / 30 sec acc. to IPC/JE-
DEC J-STD-020D, Level 1
MIL-STD-202, Method 106E
(50 cycles in a temp./mister chamber)
MIL-STD-202, Method 211A
(Deflection of board 1 mm for 1 minute)
acc. to EIA/IS-722, Test 4.7
>100 MΩ (between leeds and body)
MIL-STD-202, Method 215A
UL 94V-1
(acc. to EIA/IS-722, Test 4.12)
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 134485 or in the aerospace industry can be offered exclusively with customer-specific, individual agree-
ments by SCHURTER.
Application standards
Application standards where the product can be used
Organization
Design
Designed for applications acc.
Standard
IEC/UL 60950
Description
IEC 60950-1 includes the basic requirements for the safety of information
technologyequipment.
Fuses
1
USN 1206
Compliances
The product complies with following Guide Lines
Identification
Details
RoHS
REACH
Initiator
SCHURTER AG
SCHURTER AG
Description
EU Directive RoHS 2011/65/EU
https://www.schurter.com /PG22
Thermofuses
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.
AEC-Q200 is a test standard for passive components used in automotive
applications. SCHURTER tests components according to the customer's
agreement and is certified according to IATF 16949.
Q200
AEC
Automotive
SCHURTER AG
Dimension [mm]
3.2 mm
Reflow soldering pads
1.60±0.15
2.4±0.20
3.0±0.20
1.2
1.6
1.2
Pre-Arcing Time
Rated Current In
12 A
18 A @ 240°C
±10°C max.
170 s
80 A @ 23°C
min.
10 ms
2
Fuses
1.9
3.20±0.15 0.84±0.10
Thermofuses
https://www.schurter.com /PG22
USN 1206
Time-Current-Curves
1000000
100000
+200°C
10000
1000
100
+23°C
-40°C
Time in Seconds
10
1
0.1
0.01
0.001
0.0001
0.00001
1
10
100
Current in Amperes
-A time-current-curve for a stand fuse would be equal even it ambient
temperature is high
-The time-current-curve for USN is shifting to the left while ambient
temperature increase
All Variants
Rated current
[A]
12
Rated Voltage
[VDC]
32
1)
Breaking Capacity
Voltage Drop 1.0 In typ.
[mV]
30
Cold Resistance typ.
[mΩ]
2
3413.0512.11
█
Order Number
1) 170 A @ 16 VDC, 80 A @ 32 VDC
█
Most Popular.
Availability for all products can be searched real-time:https://www.schurter.com/en/Stock-Check/Stock-Check-SCHURTER
Packaging Unit
100 pcs in Plastic Bag
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.
Fuses
3
30.04.2018
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