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TE Circuit Protection's New RTP Devices Offer Reflowable Thermal Protection in Low Temperature AC and DC Designs

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TE Circuit Protection's New RTP Devices Offer Reflowable Thermal Protection in Low Temperature AC and DC Designs
TE Circuit Protection's New RTP Devices Offer Reflowable Thermal Protection in Low Temperature AC and DC Designs
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(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)

TE Connectivity Ltd.
1050 Westlakes Dr.
Berwyn, PA, 19312

Press release date: February 9, 2012

RTP devices eliminate hand assembly of TCOs for significant cost savings

MENLO PARK, Calif. - TE Circuit Protection, a business unit of TE Connectivity, today announces AC-rated and DC-rated Reflowable Thermal Protection (RTP) devices featuring a temperature open (Topen) value of 140C. Innovative RTP devices can be quickly and easily installed using industry-standard pick-and-place and Pb-free reflow equipment, enabling manufacturers to realize significant savings by moving from hand assembly to surface-mount device (SMD) processes. The new RTP140R060S (AC) and RTP140R060SD (DC) devices offer designers a convenient, reliable alternative to typical thermal cut-off devices (TCOs) when protecting against potentially damaging thermal events in low-temperature AC or DC applications.

The AC-rated RTP140R060S device features 0.7mOhm (typical) series resistance, high-voltage capacity (250VAC) and high-current AC-interrupt ratings of 80A at 120VAC. This device is useful for helping to protect against damage from over-temperature events in low-temperature AC industrial applications, such as lighting dimmers. Because they are embedded in the wall, lighting dimmers may have difficulty dissipating heat, which can lead to thermal events. Moreover, MOSFETs employed in this type of design can fail in resistive mode, generating heat and resulting in a thermal runaway condition. To overcome space and heat challenges, the RTP140R060S device can be installed on the PCB in close proximity to the MOSFET it protects.

The DC-rated RTP140R060SD device helps provide MOSFET protection against thermal events in low-power DC applications such as battery power tools, monitoring electronics and automotive designs. Similar to the AC-rated device, the RTP140R060SD device offers 0.7mOhm (typical) series resistance and a 140C degree temperature open value that helps prevent false activations. Additionally, the device's high-voltage capacity (32VDC) and high-current DC-interrupt ratings (200A at 16VDC) make it especially well-suited for providing robust thermal protection in DC applications that must maintain high levels of reliability and safety.

TE Circuit Protection's RTP technology utilizes a one-time electronic activation process to become thermally sensitive, allowing the device to open at 140C in the field. Before activation, an RTP device can withstand up to three Pb-free solder reflow steps (260C peak) without opening. Arming can be implemented during system test or in the field.

Unlike radial-leaded thermal fuses that must be installed after reflow, the RTP device permits the use of standard surface-mount production methods, obviating the need for special assembly procedures. The device can also be installed on double-sided PCBs.

"The new low-temperature AC- and DC-rated RTP devices are an important enhancement to our RTP portfolio," said Faraz Hasan, TE Circuit Protection's Global Marketing & Business Development Manager for Appliance/Industrial/Lighting. "The new devices are available in the same form factor as our existing RTP200 devices yet activate at even lower temperatures."

The RTP devices are Pb-free and halogen-free, RoHS compliant and allow for conformal coating. UL testing is currently underway.


RTP140R060S (AC-rated)
RTP140R060SD (DC-rated)

Price: $0.98 at 1.5Kpcs
Availability: Now
Delivery: 6 weeks ARO

ABOUT TE Connectivity
TE Connectivity is a global, $14 billion company that designs and manufactures nearly 500,000 products that connect and protect the flow of power and data inside the products that touch every aspect of our lives. Our nearly 100,000 employees partner with customers in virtually every industry-from consumer electronics, energy and healthcare, to automotive, aerospace and communication networks-enabling smarter, faster, better technologies to connect products to possibilities.


Product Communications:
Faraz Hasan
TE Circuit Protection

Media Communications:
Hope-Sutton Salvador
Global Manager Marketing Communications

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