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EN2-B1N4 Datasheet(PDF) 10 Page - NEC

Part # EN2-B1N4
Description  AUTOMOTIVE RELAYS (Twin, Single) Relays
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

EN2-B1N4 Datasheet(HTML) 10 Page - NEC

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10
s NOTICE
(1) Capacitive load
If the load is capacitive, an inrush current to charge the load with poses a problem. In this case, a current-limiting
resistor or surge suppressor coil is connected in series to the contacts to suppress the peak current.
(2) Clinching terminals
To secure the relay temporarily to a printed circuit board for soldering, particular terminals are allowed to be clinched
within a particular angle. other terminals, never clinched.
The terminal numbers and the angle for clinching of each series are as follows.
1) No.4 and no.5 terminals to 45
° maximum for H bridge type of EN2 and EP2
2) No.5 and no.9 terminals to 45
° maximum for separate type of EN2 and EP2
3) No.4 and no.5 terminals to 45
° maximum for EP1
4) No.1, 4 and no.5 terminals to 45
° maximum for MR301
(3) Drive circuit
Since the coil of a relay has an inductive impedance, a counter electromotive force is generated when the circuit
is opened. This voltage may damage the relay driver IC. Therefore, a diode is connected in parallel with the coil,
as shown in figure 1.
100 ms min.
Tr1
Tr2
M
Figure 1
MOTOR
Tr1
off
off
on
off
off
on
Tr2
STOP
FORWARD
REVERSE
(4) Typical application for EN2/EP2 relays (H bridge type)


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