RTS  >210°C
RTS  >175°C
RTS  With Shunt
With Shunt
RTS  >210°C
RTS  >175°C
RTS  With Shunt

Series: RTS

SMD thermal fuse for high currents

New_Logo Free Sample Request

6 Variants


  • Patented surface mount thermal fuse to protect against thermal runaway of power semiconductors such as: MOSFET's, IC's, IGBT's, Triac's, SCR's, etc.
  • Highest reliability thanks to complete galvanic Separation.

Unique Selling Proposition

  • Separates rated voltages up to 60 VDC
  • Reflow compatible through mechanical activation procedure
  • Galvanic separation happens inside the RTS housing
  • Space-saving thanks to integrated shunt


  • Wherever power transistors are used
  • Automotive: Cooling fan applications, ABS power steering, PTC heaters, HVAC, Glow plugs, Diesel fuel heaters
  • Industrial: Battery Protection, Power supplies, Lighting ballasts, H-Bridge circuits, Motor drivers

Other versions on request

  • Thermal protection with integrated fuse
  • Thermal protection with customer specific resistance
  • Thermal protection with customer specific tripping temperature

Rated Voltage

up to 60 VDC

Breaking Capacity

up to 400 A



Tripping temperature

>175°C or >210°C 

Material: Housing


Material: Terminals

Copper alloy, tin-plated

Unit Weight

0.75 g

Storage Conditions

0 °C to 40 °C, max. 70% r.h.

Product Marking

Variant Code, Lot no.

Activation force

Fa = max. 50 N

Activation distance

Sa = 1.1 +0.3/-0.1 mm

Maximum reflow temperature

260 °C (peak)

Soldering Methods

Soldering Profile


JESD22-B102E, Method 1 

Resistance to Soldering Heat


Moisture Sensitivity Level

MSL 1, J-STD-020 

Damp heat, steady state

MIL-STD-202, Method 103

Thermal Shock

MIL-STD-202, Method 107

Operational Life

MIL-STD-202, Method 108 Condition D

Vibration, High Frequency

MIL-STD-202, Method 204 Condition D

Mechanical Shock

MIL-STD-202, Method 213 Condition B

Resistance to Solvents

MIL-STD-202, Method 215

Temperature Cycling

JESD22, Method JA-104 Condition G 

Flame Retardance

AEC-Q200-001 + SAG Specification 

Board Flex


Terminal Strength


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

Activation status

Before reflow the activation button should not be manipulated with a force greater 5 newton.

Activation after reflow is necessary for the tripping functionality of the RTS. This activation is done by mechanically pressing the activation button with max 50 newton.
Activation specification


Derating Curves

Derating Curve without Shunt (RTS-AC100)

Operating current [A]
Ambient Temperature [°C]

Derating Curve with Shunt (RTS-AS500)

Operating current [A]
Ambient Temperature [°C]

Derating Curve without Shunt (RTS-BC100)

Operating current [A]
Ambient Temperature [°C]

Derating Curve with Shunt (RTS-BS500)

Operating current [A]
Ambient Temperature [°C]
Design-In Principles

Temperature Uniformity of Resistance

Deviation of resistance [%]
Ambient Temperature [°C]

Short Table of Variants RTS Open complete table RTS

Variant Code Tripping temperature Breaking Capacity Order Number

Variant Details

The link on the respective order number refers to a separat tab with specific detailed information .
This assures better readable information of the selected product.
Change to the tab All Products in order to show details of another variant.
This approach offers to use generic alias link to the product details:
www.schurter.xx/art/ [Order Number]
where the following variables are used:
- xx is the country specific domain
- [Order Number]

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
Contact us for availability on other product variants, lead-times vary:
Contact-Form Availability for all products can be searched real-time. Enter part number and required quantity:
Stock Check SCHURTER

Free Sample

Free Sample

Please ask for free sample in order to check if the products meets your requirement for your application. Send your delivery adress and your specific requirements.

Distributor Stock Check

Distributor Stock Check

The following links refers to the inquiry form for distributors stock information of the selected products. It allows checking for the available amount and optionally to place an order at your selected partner.
The stock availability at the distributors may also be called up separately and the desired product manually entered.
Stock Check Distributor

RTS-AC100 >210°C 1) 3-104-513 ...
RTS-AC100 >210°C 1) 3-104-514 ...
RTS-AS500 >210°C 1) 3-119-589 ...
RTS-AS500 >210°C 1) 3-119-590 ...
RTS-BC100 >175°C 2) 3-134-780 ...
RTS-BS500 >175°C 2) 3-134-804 ...

1) Breaking Capacity: 400 A @ 24 VDC (L/R < 0.3ms) / 260 A @ 52 VDC (L/R < 0.2ms) / 170 A @ 60 VDC (L/R < 0.1ms)

2) Breaking Capacity: 400 A @ 24 VDC (L/R < 0.3ms)

Packaging Unit
acc. IEC 60286-3 Type 2a
100 pcs. in tape [W: 16mm and P1: 12mm] on reel [A: 18cm]
750 pcs. in tape [W: 16mm and P1: 12mm] on reel [A: 33cm]


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