SDC36.TCT Semtech, SDC36.TCT Datasheet - Page 4

• Manufacturer Part Number: SDC36.TCT
• Description: TRANSIENT SUPPRESSOR DIODE,DUAL,BIDIRECTIONAL,CENTER-TAPPED,33V V(RWM),TO-236AB
• Manufacturer: Semtech

Specifications of SDC36.TCT

• Rohs Compliant: YES
• Lead Free Status / Rohs Status: Compliant

Device Connection for Protection of Two, Three, and
Four Wire Proximity Switches
Digital sensors help to bridge the gap between the
physical world and the digital world in applications such
as computer controlled factory automation. In such
environments, transient voltages can easily disrupt or
damage sensitive sensor inputs. The SDC36 provides
transient voltage protection for the digital sensors to
ensure their operation is not disrupted by the physical
world.
The SDC36 is designed to meet the high surge capabil-
ity and low clamping voltage needed to protect the
ASIC and control logic used in proximity switches. The
SDC36 provides protection for the power and I/O lines.
Typical configurations for the protection of two, three,
and four wire switches are as follows:
1. Two-Wire Switch: Connect pin 1 to the I/O line and
pin 2 to the DC supply (since the device is symmetrical,
these connections can be reversed). Pin 3 is not
connected.
2. Three-Wire Switch: Either pin 1 or pin 2 is con-
nected to the I/O line with the other connected to
ground. Pin 3 must be connected to the DC supply.
3. Four-Wire Switch: Two device are required to
protect four wire switches. Pin 3 of each device is
connected to the DC supply line. Pins 1 and 2 are
connected to the I/O lines and ground as shown.
PROTECTION PRODUCTS
Applications Information
2004 Semtech Corp.
4
2-Wire DC Proximity Switch Application
3-Wire DC Proximity Switch Application
4-Wire DC Proximity Switch Application
www.semtech.com
SDC36