
Data Sheet
4V Drive Nch MOSFET
RXH125N03
Structure Dimensions (Unit : mm)
Silicon N-channel MOSFET
SOP8
Features
(8) (5)
1) Low on-resistance.
2) Built-in G-S Protection Diode.
3) Small Surface Mount Package (SOP8).
(1)
Application
Switching
Packaging specifications Inner circuit
Package Taping
Type
Code TB
Basic ordering unit (pieces) 2500
RXH125N03
Absolute maximum ratings (Ta = 25C)
Parameter
Symbol Limits Unit
Drain-source voltage V
Gate-source voltage V
Drain current
Source current
(Body Diode)
Continuous I
Pulsed I
Continuous I
Pulsed I
Power dissipation P
DSS
GSS
D
DP
S
SP
D
30 V
20 V
12.5 A
*1
36 A
1.6 A
*1
*2
36 A
2.0 W
(1) Source
(2) Source
(3) Source
(4) Gate
(5) Drain
(6) Drain
(7) Drain
(8) Drain
Channel temperature Tch 150 C
Range of storage temperature Tstg 55 to 150 C
*1 Pw10s, Duty cycle1%
*2 Mounted on a ceramic board.
(4)
(8) (7) (6) (5)
∗2
∗1
(1) (2) (3) (4)
∗1 ESD PROTECTION DIODE
∗2 BODY DIODE
Thermal resistance
Parameter
Channel to Ambient Rth (ch-a) 62.5 C / W
*Mounted on a ceramic board.
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Symbol Limits Unit
*
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2011.03 - Rev.A

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Data Sheet
RXH125N03
Electrical characteristics (Ta = 25 C)
Parameter
Symbol Min. Typ. Max. Unit
Gate-source leakage I
Drain-source breakdown voltage V
Zero gate voltage drain current I
Gate threshold voltage V
GSS
(BR)DSS
DSS
GS (th)
--10 AVGS=20V, VDS=0V
30 - - V ID=1mA, VGS=0V
--1AVDS=30V, VGS=0V
1.0 - 2.5 V VDS=10V, ID=1mA
Conditions
- 7.5 12.0 ID=12.5A, VGS=10V
Static drain-source on-state
resistance
R
DS (on)
*
- 9.5 13.3 ID=12.5A, VGS=4.5V
m
- 10.0 14.0 ID=12.5A, VGS=4.0V
iss
oss
rss
d(on)
d(off)
gd
*
- 1000 - pF VDS=10V
- 340 - pF VGS=0V
- 170 - pF f=1MHz
- 12 - ns ID=6.3A, VDD 15V
*
- 20 - ns VGS=10V
*
r
- 55 - ns RL=2.38
*
- 18 - ns RG=10
*
f
- 12.7 - nC ID=12.5A, VDD 15V
*
g
- 2.6 - nC VGS=5V
*
gs
- 6.0 - nC
*
Forward transfer admittance l Yfs l 9.0 - - S ID=12.5A, VDS=10V
Input capacitance C
Output capacitance C
Reverse transfer capacitance C
Turn-on delay time t
Rise time t
Turn-off delay time t
Fall time t
Total gate charge Q
Gate-source charge Q
Gate-drain charge Q
*Pulsed
Body diode characteristics (Source-Drain) (Ta = 25C)
Parameter
Forward Voltage V
*Pulsed
Symbol Min. Typ. Max. Unit
*
SD
- - 1.2 V Is=12.5A, VGS=0V
Conditions
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2011.03 - Rev.A

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Data Sheet
Electrical characteristic curves (Ta=25C)
0
2.5
5
7.5
10
12.5
0 0.2 0.4 0.6 0.8 1
Drain Current : I
D
[A]
Drain-Source Voltage : VDS [V]
Fig.1 Typical Output Characteristics (Ⅰ)
0
2.5
5
7.5
10
12.5
0 2 4 6 8 10
Drain Current : I
D
[A]
Drain-Source Voltage : VDS [V]
Fig.2 Typical Output Characteristics (Ⅱ)
1
10
100
0.01 0.1 1 10 100
Static Drain-Source On-State Resistance
R
DS(on)
[mΩ]
Drain Current : ID [A]
Fig.3 Static Drain-Source On-State Resistance vs. Drain Current
1
10
100
0.01 0.1 1 10 100
Static Drain-Source On-State Resistance
R
DS(on)
[mΩ]
Drain Current : ID [A]
Fig.4 Static Drain-Source On-State Resistance vs. Drain Current
Ta=125°C
Ta=75°C
Ta=25°C
Ta=-25°C
1
10
100
0.01 0.1 1 10 100
Static Drain-Source On-State Resistance
R
DS(on)
[mΩ]
Drain Current : ID [A]
Fig.5 Static Drain-Source On-State Resistance vs. Drain Current
Ta=125°C
Ta=75°C
Ta=25°C
Ta=-25°C
1
10
100
0.01 0.1 1 10 100
Static Drain-Source On-State Resistance
R
DS(on)
[mΩ]
Drain Current : ID [A]
Fig.6 Static Drain-Source On-State Resistance vs. Drain Current
Ta=125°C
Ta=75°C
Ta=25°C
Ta=-25°C

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Data Sheet
0.01
0.1
1
10
100
0.001 0.01 0.1 1 10 100
Forward Transfer Admittance
Y
fs
[S]
Drain Current : ID [A]
Fig.7 Forward Transfer Admittance vs. Drain Current
Ta=125°C
Ta=75°C
Ta=25°C
Ta=-25°C
0.001
0.01
0.1
1
10
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Drain Currnt : I
D
[A]
Gate-Source Voltage : VGS [V]
Fig.8 Typical Transfer Characteristics
Ta=125°C
Ta=75°C
Ta=25°C
Ta=-25°C
0.01
0.1
1
10
100
0.0 0.5 1.0 1.5 2.0
Source Current : I
s
[A]
Source-Drain Voltage : VSD [V]
Fig.9 Source Current vs. Source-Drain Voltage
Ta=125°C
Ta=75°C
Ta=25°C
Ta=-25°C
0
10
20
30
40
50
0 2 4 6 8 10
Static Drain-Source On-State Resistance
R
DS(on)
[mΩ]
Gate-Source Voltage : VGS [V]
Fig.10 Static Drain-Source On-State Resistance vs. Gate-Source Voltage
1
10
100
1000
10000
0.01 0.1 1 10 100
Switching Time : t [ns]
Drain Current : ID [A]
Fig.11 Switching Characteristics
0
2
4
6
8
10
0 5 10 15 20 25
Gate-Source Voltage : V
GS
[V]
Total Gate Charge : Qg [nC]
Fig.12 Dynamic Input Characteristics
Ta=25°C
VDD=15V
ID=12.5A
Pulsed

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Data Sheet
10
100
1000
10000
0.01 0.1 1 10 100
Capacitance : C [pF]
Drain-Source Voltage : VDS [V]
Fig.13 Typical Capacitance vs. Drain-Source Voltage
0.01
0.1
1
10
100
0.1 1 10 100
Drain Current : I
D
[ A ]
Drain-Source Voltage : VDS [ V ]
Fig.14 Maximum Safe Operating Area
Single Pulse
Mounted on a ceramic board.
(30mm × 30mm × 0.8mm)
Operation in this area is limited by R
0.0001
0.001
0.01
0.1
1
10
0.0001 0.001 0.01 0.1 1 10 100 1000
Normalized Transient Thermal Resistance : r (t)
Pulse width : Pw (s)
Fig.15 Normalized Transient Thermal Resistance v.s. Pulse Width
Mounted on a ceramic board.
(30mm
Rth
(ch-a)
(t)=r(t)×Rth
(ch-a)

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Data Sheet
RXH125N03
Measurement circuits
V
GS
R
G
Fig.1-1 Switching Time Measurement Circuit
VGS
IG(Const.)
Fig.2-1 Gate Charge Measurement Circuit
D.U.T.
D.U.T.
D
I
I
V
D
R
L
V
DD
D
VD
RL
VDD
Pulse width
50%
10%
GS
DS
10% 10%
90%
50%
90% 90
t
d(on)
t
on
t
d(off)
t
r
t
off
Fig.1-2 Switching Waveforms
V
G
Q
g
GS
QgsQ
gd
Charge
Fig.2-2 Gate Charge Waveform
t
f
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2011.03 - Rev.A

Notes
Notice
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