UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
MDC_UCE.A09 Page 1 of 10
+V
IN
(2)
(8)
(3)
(1)
(7)
–V
IN
OPTO
ISOLATION
REFERENCE &
ERROR AMP
PULSE
TRANSFORMER
INPUT UNDERVOLTAGE, INPUT
OVERVOLTAGE, AND OUTPUT
OVERVOLTAGE COMPARATORS
REMOTE
ON/OFF
CONTROL
+V
OUT
(4)
−V
OUT
(6)
V
OUT
TRIM
+SENSE
(5)
−SENSE
SWITCH
CONTROL
PWM
CONTROLLER
FEATURES
nRoHS compliant
nIndustry standard eighth-brick pinout
and package
nOutputs from 1.5V to 12V up to 100W
nLow profile 0.4" height with 0.9" x 2.3"
outline dimensions
n36 to 75 Vdc nominal input
nFully isolated, 2250 Vdc (BASIC)
insulation
nOutstanding thermal performance
and derating
nExtensive self-protection and short
circuit features with no output reverse
conduction
nOn/Off control, trim and sense functions
nInterleaved synchronous rectification
yields high efficiency over 90%
nFully protected against temperature and
voltage limits
nUL/EN/IEC 60950-1 safety approvals
nQual/HALT/EMI testing is scheduled
Units are offered with fixed output voltages from
1.5 to 12 Volts and currents up to 40 Amps. UCEs
operate over a wide temperature range (up to +85
degrees Celsius at moderate airflow) with full rated
power. Interleaved synchronous rectifier topology
yields excellent efficiency over 90% and no reverse
output conduction.
UCE’s achieve these impressive mechanical and
environmental specs while delivering excellent
electrical performance in a through-hole package.
Overall noise is typically 50 mV pk-pk (low voltage
models) with fast step response. These converters
offer tight output regulation and high stability even
with no load. The unit is fully protected against
input undervoltage, output overcurrent and short
circuit. An on-board temperature sensor shuts
down the converter if thermal limits are reached.
“Hiccup” output protection automatically restarts
the converter when the fault is removed.
A convenient remote On/Off control input enables
phased startup and shutdown in multi-voltage ap-
plications. To compensate for longer wiring and to
retain output voltage accuracy at the load, UCEs em-
ploy a Sense input to dynamically correct for ohmic
losses. A trim input may be connected to a user’s
adjustment potentiometer or trim resistors for output
voltage calibration. The UCE will tolerate substantial
capacitive loading for bypass-cap applications.
UCEs include industry-standard safety certifica-
tions and BASIC I/O insulation provides input/output
isolation to 2250V. Radiation emission testing is
performed to widely-accepted EMC standards.
PRODUCT OVERVIEW
Typical unit
Typical topology is shown.
SIMPLIFIED BLOCK DIAGRAM
For efficient, fully isolated DC power in the smallest space, the UCE
open frame DC/DC converter series fit in industry-standard “eighth
brick” outline dimensions and mounting pins (on quarter-brick pinout).
　
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com
MDC_UCE.A09 Page 2 of 10
PART NUMBER STRUCTURE
Maximum Rated Output
Current in Amps
Eighth-Brick Package
Output Configuration:
U = Unipolar/Single
Nominal Output Voltage
U CE -/D48-3.3 30 N B
Input Voltage Range:
D48 = 36-75V,
48V nominal
C
-
H
PERFORMANCE SPECIFICATIONS AND ORDERING GUIDE
Model Family
Output Input
Efficiency Package
VOUT
(V)
IOUT
(A)
Power
(W)
Ripple & Noise
(mVp-p) Regulation VIN Nom.
(V)
Range
(V)
IIN, no
load
(mA)
IIN, full
load
(A)Typ. Max. Line Load Min. Typ. Case Pinout
UCE-1.2/40-D48N-C 1.2 40 48 Please contact Murata Power Solutions for further information.
UCE-1.5/20-D48N-C 1.5 20 30 50 100 ±0.15% ±0.3% 48 36-75 50 0.72 85% 87% C56 P32
UCE-1.5/40-D48N-C 1.5 40 60 Please contact Murata Power Solutions for further information.
UCE-1.8/30-D48N-C 1.8 30 54 30 80 ±0.125% ±0.25% 48 36-75 45 1.28 87% 88% C56 P32
UCE-2.5/20-D48N-C 2.5 20 50 Please contact Murata Power Solutions for further information.
UCE-2.5/40-D48N-C 2.5 40 100
UCE-3.3/15-D48N-C 3.3 15 49.5 50 100 ±0.125% ±0.25% 48 36-75 60 1.15 86% 90% C56 P32
UCE-3.3/30-D48N-C 3.3 30 99 ±0.1% ±0.2% 2.27 89% 91%
UCE-5/10-D48N-C 5 10 50 Please contact Murata Power Solutions for further information.
UCE-5/20-D48N-C 5 20 100
UCE-12/4.2-D48N-C 12 4.2 50.4 150 300 ±0.125% ±0.25% 48 36-75 50 1.14 86% 92% C56 P32
UCE-12/8.3-D48N-C 12 8.3 99.6 200 2.31 90%
Please refer to the model number structure for additional ordering part numbers and options .
Conformal coating (optional)
Blank = no coating, standard
H = Coating added, optional, special quantity order
RoHS Hazardous Materials compliance
C = RoHS-6 (no lead), standard
Y = RoHS-5 (with lead), optional, special quantity order
Note: Some model combinations may not be
available. Contact Murata Power Solutions for
availability.
On/Off Control Polarity
N = Negative polarity, standard
P = Positive polarity, optional
Baseplate (optional)
Blank = No baseplate, standard
B = Baseplate installed, optional, special quantity order
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com
MDC_UCE.A09 Page 3 of 10
INPUT CHARACTERISTICS
Model Family
Vi n
(Volts)
Start-up
thresh-
old
Min.
(A)
Under-
voltage
Shut-
down
(V)
Reflected
(back)
Ripple
Current
(mA)
Input Current
Internal
Input
Filter
Type
Reverse
Polarity
Protec-
tion
Remote On/Off Control
Full
Load
Condi-
tions
Inrush
Tran-
sient
A2sec
Output
Short
Circuit
(mA)
No Load
(mA)
Low Line
(Vi n =min.)
(A)
Standby
Mode
(mA)
Current
(mA)
Positive
Logic
“P” Model
Suffix
Negative
Logic
“N” Model
Suffix
UCE-1.5/20-D48
48 34
32
10-30,
model
dependent
See
ordering
guide
0.05
A2sec
50-150,
model
dependent
45-60,
model
dependent
0.97
1-10,
model
dependent
L-C See
notes 1.0
OFF=Ground
pin to
+1V max.
ON=open or
+3.5 to +15V
max.
OFF=open or
+2.5V to
+15V max.
ON=Ground
pin to +0.8V
max.
UCE-1.8/30-D48 32.5 1.72
UCE-3.3/15-D48 32 1.54
UCE-3.3/30-D48 32 3.06
UCE-12/4.2-D48 32 1.52
UCE-12/8.3-D48 32 3.07
OUTPUT CHARACTERISTICS
Model Family
Vo u t
V
Vo u t
Accuracy
50% Load
% of Vn o m
Capacitive
Loading Max. Low
ESR <0.02Ω Max.
resistive load
µF
Adjustment
Range
Temperature
Coefficient
Minimum
Loading
Remote
Sense
Compen-
sation
Ripple/
Noise
(20 MHz
bandwidth)
Line/Load
Regulation Efficiency
Current Limit
Inception
98% of Vout,
after warmup
A
UCE-1.5/20-D48 1.5
±1%
10,000
–10 to
+10% of
Vnom.
±0.02% of
Vout range
per °C
No minimum
load +10% See ordering guide
24.5
UCE-1.8/30-D48 1.8 10,000 36
UCE-3.3/15-D48 3.3 10,000 max. 24
UCE-3.3/30-D48 3.3 10,000 35
UCE-12/4.2-D48 12 1000 5.5
UCE-12/8.3-D48 12 1000 12
ISOLATION CHARACTERISTICS
Model Family
Input to Output
Min.
V
Input to
baseplate
Min.
V
Baseplate to output
Min.
V
Isolation
Resistance
MΩ
Isolation
Capacitance
pF Isolation Safety Rating
UCE-1.5/20-D48
2250 1500 1500
100
1000 Basic Insulation
UCE-1.8/30-D48 10
UCE-3.3/15-D48
100
UCE-3.3/30-D48
UCE-12/4.2-D48
UCE-12/8.3-D48
MISCELLANEOUS CHARACTERISTICS
Model Family
Calculated
MTBF4
Operating
Temperature Range
with derating
(°C)
Operating
Case
Temperature
(no derating)
Storage
Temperature
Range
(°C)
Thermal
Protection/
Shutdown
(ºC)
Short
Circuit
Current
(A)
Overvoltage
Protection12
(V) Via
magnetic
feedback
(V)
Short Circuit
Protection
Method
Short Circuit
Duration16
Relative
Humidity
(non-condensing)
UCE-1.5/20-D48
TBC −40 to +85 −40 to +120 −55 to
+125
120
5
1.95 Current
limiting,
hiccup
autorestart.
Remove
overload for
recovery.
Continuous,
output
shorted to
ground. No
damage.
to +85°C/85%
UCE-1.8/30-D48 2.8 V. max
UCE-3.3/15-D48 4.25
UCE-3.3/30-D48
UCE-12/4.2-D48 125 14.5
UCE-12/8.3-D48
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com
Input Voltage:
Continuous:
48 Volt input models 75 Volts
Transient (100 mSec. Max.)
48 Volt input models 100 Volts
On/Off Control +15 Volts
Input Reverse Polarity Protection 5 Amps, 10 sec. max.
Output Overvoltage Protection Magnetic feedback.
See specifications.
Output Current * Current-limited. Devices can
withstand sustained short circuit
without damage.
Storage Temperature –40 to +125°C.
Lead Temperature +280°C, 10 seconds max.
Absolute maximums are stress ratings. Exposure of devices to any of these conditions
may adversely affect long-term reliability. Proper operation under conditions other
than those listed in the Performance/Functional Specifications Table is not implied nor
recommended.
Note: Not all model combinations are available.
ABSOLUTE MAXIMUM RATINGS
MDC_UCE.A09 Page 4 of 10
DYNAMIC CHARACTERISTICS
Model Family
Dynamic Load
Response
(50-75-50%
load step)
Start-up Time
Switching
Frequency
KHz
Vi n to Vo u t
regulated
(Max.)
Remote On/
Off to Vo u t
regulated
(Max.)
mSec
UCE-1.5/20-D48
30-200 μSec
to ±1% of final
value, model
dependent
5-50, model
dependent
5-50, model
dependent
480
UCE-1.8/30-D48 400 ±40
UCE-3.3/15-D48 480 ±50
UCE-3.3/30-D48 380 ±40
UCE-12/4.2-D48 200 ±10
UCE-12/8.3-D48
(1) All models are tested and specified with external 1||10 µF ceramic/tantalum output
capacitors and no external input capacitor. All capacitors are low ESR types. These
capacitors are necessary to accommodate our test equipment and may not be required
to achieve specified performance in your applications. All models are stable and regulate
within spec under no-load conditions.
General conditions for Specifications are +25 deg.C, Vi n = nominal, Vo u t = nominal, full
load. Adequate airflow must be supplied for extended testing under power.
(2) Input Ripple Current is tested and specified over a 5 Hz to 20 MHz bandwidth. Input
filtering is Cin = 33 µF, 100V tantalum, Cb u s = 220 µF, 100V electrolytic, Lb u s = 12 µH.
(3) Note that Maximum Power Derating curves indicate an average current at nominal
input voltage. At higher temperatures and/or lower airflow, the DC/DC converter will
tolerate brief full current outputs if the total RMS current over time does not exceed
the Derating curve. All Derating curves are presented at sea level altitude. Be aware of
reduced power dissipation with increasing density altitude.
(4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1,
Case 3, ground fixed conditions, Tpcboard=+25 deg.C, full output load, natural air
convection.
(5) The On/Off Control is normally controlled by a switch. But it may also be driven with
external logic or by applying appropriate external voltages which are referenced to Input
Common. The On/Off Control Input should use either an open collector or open drain
transistor.
(6) Short circuit shutdown begins when the output voltage degrades approximately 2%
from the selected setting.
(7) The outputs are not intended to sink appreciable reverse current. This may damage
the outputs.
(8) Output noise may be further reduced by adding an external filter. See I/O Filtering and
Noise Reduction.
(9) All models are fully operational and meet published specifications, including “cold
start” at –40ºC.
(10) Regulation specifications describe the deviation as the line input voltage or output
load current is varied from a nominal midpoint value to either extreme.
(11) Alternate pin length and/or other output voltages are available under special quantity
order.
(12) Output current limit is non-latching. When the overcurrent fault is removed, the
converter will immediately recover.
(13) Do not exceed maximum power specifications when adjusting the output trim.
(14) At zero output current, the output may contain low frequency components which
exceed the ripple specification. The output may be operated indefinitely with no load.
(15) If reverse polarity is accidentally applied to the input, a body diode will become
forward biased and will conduct considerable current. To ensure reverse input protection
with full output load, always connect an external input fuse in series with the +Vi n input.
Use approximately twice the full input current rating with nominal input voltage.
PERFORMANCE SPECIFICATION NOTES
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com
MDC_UCE.A09 Page 5 of 10
PHYSICAL CHARACTERISTICS
Outline dimensions See mechanical specs (below)
Pin material Copper alloy
Pin diameter 0.04/0.062" (1.016/1.524mm)
Pin finish Nickel underplate with gold overplate
Weight
UCE-1.5/20-D48 0.67 ounces (19 grams)
UCE-1.8/30-D48, UCE-12/4.2-D48 0.71 ounces (20 grams)
UCE-3.3/15-D48 1 ounce (28 grams)
UCE-3.3/30-D48, UCE-12/8.3-D48 0.81 ounces (23 grams)
Electromagnetic interference (conducted and radiated)
(external filter required) FCC part 15, class B, EN55022
Safety UL/cUL 60950-1, CSA-C22.2 No. 60950-1, IEC/EN 60950-1
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com
MDC_UCE.A09 Page 6 of 10
MECHANICAL SPECIFICATIONS
Dimensions are in inches (mm).
Typical component locations are shown. Actual units may vary.
INPUT/OUTPUT CONNECTIONS
Pin Function P32
1 −Input
2 On/Off Control
3 +Input
4 −Output
5 −Sense
6 Output Trim
7 +Sense
8 +Output
2.30 (58.4)
2.00 (50.8)
0.37 max
(9.4)
0.18
(4.6)
0.300
(7.62)
0.300
(7.62)
0.15
(3.81)
0.900
(22.9)
0.015 minimum clearance
between standoffs and
highest component
PINS 1-3, 5-7:
0.040±0.001 (1.016±0.025) dia.
PINS 4, 8:
0.060±0.001 (1.524±0.025) dia.
1
2
3
4
Pin 8
Without Baseplate
2.30 (58.42)
2.00 (50.80)
0.37 max
(9.4)
0.18
(4.6)
0.300
(7.62)
0.300
(7.62)
0.15
(3.81)
0.900
(22.9)
Screw length must not
go through baseplate.
PINS 1-3, 5-7:
0.040±0.001 (1.016±0.025) dia.
PINS 4, 8:
0.060±0.001 (1.524±0.025) dia.
1
2
3
4
Pin 8
0.015 minimum clearance
between standoffs and
highest component
With Baseplate
0.50
(12.7)
2.00 (50.8)
0.18
(4.6)
Third Angle Projection
Dimensions are in inches (mm shown for ref. only).
Components are shown for reference only.
Tolerances (unless otherwise specified):
.XX ± 0.02 (0.5)
.XXX ± 0.010 (0.25)
Angles ± 2˚
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com
MDC_UCE.A09 Page 7 of 10
Where,
   VNOM − VOUT) / VNOM
VNOM is the nominal, untrimmed output voltage.
VOUT is the desired new output voltage.
Do not exceed the specified trim range or maximum power ratings when adjusting trim.
Use 1% precision resistors mounted close to the converter on short leads.
Trim Equations
Trim Down
Connect trim resistor between
trim pin and −Sense
5.11
RTrimDn (k Ω) = − 10.22
Trim Up
Connect trim resistor between
trim pin and +Sense
1.225 ×
5.11 × VNOM × (1+
RTrimUp (k Ω) = − 10.22
− 5.11
Figure A. Trim Connections Using A Trimpot
Figure C. Trim Connections To Decrease Output VoltagesFigure B. Trim Connections To Increase Output Voltages
LOAD
+OUTPUT
–INPUT
+INPUT
ON/OFF
CONTROL
TRIM
+SENSE
–OUTPUT
–SENSE
LOAD
RTRIM DOWN
+OUTPUT
–INPUT
+INPUT
ON/OFF
CONTROL TRIM
+SENSE
–OUTPUT
–SENSE
LOAD
RTRIM UP
+OUTPUT
–INPUT
+INPUT
ON/OFF
CONTROL
TRIM
+SENSE
–OUTPUT
–SENSE
Trim Equations
Trim Circuits
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com
Typical Performance Curves
40
45
50
55
60
65
70
75
80
85
90
95
0
5
10
15
20
25
30
35
30 35 40 45 50 55 60 65 70 75 80
Ambient Temperature (ºC)
Output Current (A)
UCE-1.8/30-D48 Maximum Current Temperature Derating
(Vin = 48V, no baseplate, longitudinal airflow at sea level)
300 LFM
100 LFM
200 LFM
400 LFM
10
12
14
16
18
20
30 40 50 60 70 80
Ambient Temperature (ºC)
Output Current (A)
UCE-2.5/20-D48 Maximum Current Temperature Derating
(Vin = 48V, with baseplate, longitudinal airflow at sea level)
200 LFM
Natural Convection
100 LFM
300 LFM
70
75
80
85
90
95
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Load Current (A)
Efficiency (%)
UCE-2.5/20-D48 Efficiency vs Line Voltage & Load Current @ 25ºC
Vin = 75V
Vin = 48V
Vin = 36V
10
12
14
16
18
20
30 40 50 60 70 80
Ambient Temperature (ºC)
Output Current (A)
UCE-1.5/20-D48 Maximum Current Temperature Derating
(Vin = 48V, no baseplate, longitudinal airflow at sea level)
300 LFM
100 LFM
200 LFM
400 LFM
60
65
70
75
80
85
90
3 6 9 12 15 18
Vin = 75V
Vin = 48V
Vin = 36V
Load Current (A)
Efficiency (%)
UCE-1.5/20-D48 Efficiency vs Line Voltage & Load Current @ 25ºC
MDC_UCE.A09 Page 8 of 10
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com
UCE-3.3/15-D48 Maximum Current Temperature Derating
(Vin = 48V, no baseplate, longitudinal airflow at sea level)
0
2
4
6
8
10
12
14
16
30 40 50 60 70 80
Ambient Temperature (ºC)
Output Current (A)
300 LFM
100 LFM
200 LFM
400 LFM
UCE-3.3/15-D48 Efficiency Vs. Line Voltage & Load Current @ +25ºC
70
75
80
85
90
95
3 4 5 6 7 8 9 10 11 12 13 14 15
Load Current (A)
Efficiency (%)
Vin = 75V
Vin = 48V
Vin = 36V
Typical Performance Curves
3
3.25
3.5
3.75
4
4.25
30 40 50 60 70 80
Ambient Temperature (ºC)
Output Current (A)
100 LFM
200 to 400 LFM
UCE-12/4.2-D48 Maximum Current Temperature Derating
(Vin = 48V, no baseplate, longitudinal airflow at sea level)
60
65
70
75
80
85
90
95
0.6 1.2 1.8 2.4 3.0 3.6 4.2
Load Current (A)
Efficiency (%)
UCE-12/4.2-D48 Efficiency Vs. Line Voltage & Load Current @ +25ºC
Vin = 75V
Vin = 48V
Vin = 36V
40
45
50
55
60
65
70
75
80
85
90
95
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Load Current (A)
Efficiency (%)
UCE-3.3/30-D48 Efficiency vs Line Voltage & Load Current @ 25ºC
Vin = 75V
Vin = 48V
Vin = 36V
0
5
10
15
20
25
30
35
30 35 40 45 50 55 60 65 70 75 80
Ambient Temperature (ºC)
Output Current (A)
UCE-3.3/30-D48 Maximum Current Temperature Derating
(Vin = 48V, no baseplate, longitudinal airflow at sea level)
300 LFM
100 LFM
200 LFM
400 LFM
MDC_UCE.A09 Page 9 of 10
UCE Series
Isolated, High-Density, Eighth-Brick
100W DC/DC Converters
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice. © 2008 Murata Power Solutions, Inc.
USA: Mansfield (MA), Tel: (508) 339-3000, email: sales@murata-ps.com
Canada: Toronto, Tel: (866) 740-1232, email: toronto@murata-ps.com
UK: Milton Keynes, Tel: +44 (0)1908 615232, email: mk@murata-ps.com
France: Montigny Le Bretonneux, Tel: +33 (0)1 34 60 01 01, email: france@murata-ps.com
Germany: München, Tel: +49 (0)89-544334-0, email: munich@murata-ps.com
Japan: Tokyo, Tel: 3-3779-1031, email: sales_tokyo@murata-ps.com
Osaka, Tel: 6-6354-2025, email: sales_osaka@murata-ps.com
Website: www.murata-ps.jp
China: Shanghai, Tel: +86 215 027 3678, email: shanghai@murata-ps.com
Guangzhou, Tel: +86 208 221 8066, email: guangzhou@murata-ps.com
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356
www.murata-ps.com email: sales@murata-ps.com ISO 9001 REGISTERED
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000www.murata-ps.com
UCE-12/8.3-D48 Maximum Current Temperature Derating
(Vin = 48V, no baseplate, longitudinal airflow at sea level)
2
3
4
5
6
7
8
9
30 40 50 60 70 80
Ambient Temperature (ºC)
Output Current (A)
300 LFM
100 LFM
200 LFM
400 LFM
UCE-12/8.3-D48 Efficiency vs Line Voltage & Load Current @ 25ºC
70
75
80
85
90
95
3 4 5 6 7 8
Load Current (A)
Efficiency (%)
0
1
2
3
4
5
Vin = 75V
Vin = 48V
Vin = 36V
Typical Performance Curves
MDC_UCE.A09 Page 10 of 10
07/03/08