USN 1206  Temperature sensitive SMD fuse
Temperature sensitive SMD fuse

Series: USN 1206

Thermal sensitive Fuse, SMD 1206, 32 VDC

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  • Temperature sensitive SMD fuse
  • Customer-specific pre-arcing time characteristic as a function of ambient 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 requirements.

Unique Selling Proposition

  • 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


  • Secondary Protection DC and AC
  • Automotive electronics
  • Intrinsically safe electronics
  • Battery protection
  • In all electronics with temperature-critical components (eg Mosfet's)

Rated Voltage

32 VDC

Rated current

12 A

Breaking Capacity

170 A



Admissible Ambient Temp.

-40 °C to 125 °C

Material: Housing

Fiber-reinforced plastic, UL 94V-0

Material: Terminals

Tin-Plated Copper

Unit Weight

0.01 g

Storage Conditions

0 °C to 40 °C, max. 70% r.h.

Product Marking

Rated current

Soldering Methods

Soldering Profile


245 °C / 3 sec acc. to IEC 60068-2-58, Test Td

Resistance to Soldering Heat

260 +0/-5 °C / 30 sec acc. to IPC/JEDEC J-STD-020D, Level 1

Moisture Sensitivity Level

MSL 1, J-STD-020 

Case Resistance

acc. to EIA/IS-722, Test 4.7
>100 MΩ (between leeds and body)


UL 94V-1
(acc. to EIA/IS-722, Test 4.12)

Moisture Resistance Test

MIL-STD-202, Method 106
(50 cycles in a temp./mister chamber)

Resistance to Solvents

MIL-STD-202, Method 215

Terminal Strength

MIL-STD-202, Method 211A
(Deflection of board 1 mm for 1 minute)

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.

Application standards

Application standards where the product can be used

Organization Design Standard Description
Partners IEC_Certification_Body Suitable for applications acc. IEC/UL 62368-1 Audio/video, information and communication technology equipment - Part 1: Safety requirements


The product complies with following Guide Lines

Identification Details Initiator Description
Environment_Safety RoHS_Logo_color_CMYK_tif SCHURTER AG Directive RoHS 2011/65/EU, Amendment (EU) 2015/863
Environment_Safety 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.
tableimage AECQ200 SCHURTER AG 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.


Dimension [mm]

Reflow soldering pads

Pre-Arcing Time

Rated Current In 18 A @ 240°C ±10°C max. 80 A @ 23°C min.
12 A 200 s 10 ms


Time in Seconds
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

Short Table of Variants USN 1206 Open complete table USN 1206

Rated current Rated Voltage Breaking Capacity Order Number

Variant Details

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A=Most Popular

A=Most Popular

Most popular products have the following customer benefits:
- previously ordered by multiple customers
- generally in stock for immediate delivery
- early adoption or mature life cycle
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Free Sample

Free Sample

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Distributor Stock Check

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Stock Check Distributor

[A]   [VDC]              
12 32 1) 3413.0512.11  A  ...

Most Popular.

1) 170 A @ 16 VDC, 80 A @ 32 VDC

Packaging Unit
acc. IEC 60286-3 Type 2a
.xx = .11 100 pcs. in tape in ESD-plastic bag
.xx = .22 1000 pcs. in tape [W: 8mm and P1: 4mm] on reel [A: 18cm]
.xx = .24 5000 pcs. in tape [W: 8mm and P1: 4mm] on reel [A: 33cm]
.xx = .26 15000 pcs. in tape [W: 8mm and P1: 4mm] on reel [A: 33cm]


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