®
STDD15 series
LOW CAPACITANCE DETECTION DIODE
MAIN PRODUCT CHARACTERISTICS
I
F(AV)
V
RRM
Tj (max)
V
F
(max)
FEATURES AND BENEFITS
s
s
10 mA
15 V
150 °C
0.51 V
SOT323-3L
STDD15-xxW
SOT323-6L
STDD15-xxS
s
s
s
Low diode capacitance
Device designed for RF application
Low profile package
Available in 3 configurations
Very low parasitic inductor & resistor
SCHEMATIC DIAGRAM
1
3
2
Series configuration
STDD15-04W
DESCRIPTION
The STDD15 is a dual diode series for the
detection of a RF signal and the compensation of
the voltage drift with the temperature. The SOT323
package makes the device ideal in application
where the space saving is critical like mobile
phones.
The low junction capacitance will reduce the
disturbance on the RF signal
1
2
3
4
5
6
Parallel configuration
STDD15-07S
1
3
2
Common cathode configuration
STDD15-05W
ABSOLUTE RATINGS
(limiting values)
Symbol
V
RRM
I
F
I
FSM
T
stg
Tj
Parameter
Repetitive peak reverse voltage
Continuous forward current
Surge non repetitive forward current
Storage temperature range
Maximum operating junction temperature
tp = 10ms
Value
15
10
2
- 65 + 150
150
Unit
V
mA
A
°C
°C
August 2002 - Ed: 3A
1/6
STDD15 series
THERMAL PARAMETERS
Symbol
R
th (j-a)
*
Junction to ambient
Parameter
Value
500
Unit
°C/W
*:
Mounted with minimum recommended pad size, PC board FR4.
STATIC ELECTRICAL CHARACTERISTICS
Symbol
I
R
*
Parameter
Reverse leakage
current
Tests conditions
Tj = 25°C
Tj = 125°C
Tj = 25°C
Tj = 125°C
V
F
*
Forward voltage drop
Tj = 25°C
Tj = 125°C
Tj = 25°C
Tj = 125°C
* Pulse test: tp
≤
250µs, Delta
≤
2%
Min.
Typ.
Max.
0.035
Unit
µA
V
R
= 1V
6
V
R
= 15V
10
I
F
= 1 mA
350
230
I
F
= 10 mA
500
450
30
0.23
100
380
260
570
510
mV
µA
ELECTRICAL CHARACTERISTICS
Symbol
C
R
F
Ls
Parameter
Diode capacitance
Forward resistance
Series inductance
Tests conditions
V
R
= 0 V
I
F
= 5 mA
F = 1MHz
F = 100MHz
15
1.5
Min.
Typ.
Max.
1.0
Unit
pF
Ω
nH
2/7
STDD15 series
Fig. 1:
Forward voltage drop versus forward
current (typical values).
IFM(mA)
1.E+02
1.E+02
Tj=125°C
Fig. 2:
Reverse leakage current versus reverse
voltage applied (typical values).
IR(µA)
1.E+01
1.E+01
1.E+00
Tj=125°C
Tj=85°C
1.E-01
1.E+00
Tj=85°C
Tj=25°C
Tj=-40°C
Tj=25°C
1.E-02
VFM(V)
1.E-03
VR(V)
1.2
0.0
2.5
5.0
7.5
10.0
12.5
15.0
1.E-01
0.0
0.2
0.4
0.6
0.8
1.0
Fig. 3:
Differential forward resistance versus
forward current (typical values).
100
Fig. 4:
Junction capacitance versus reverse
voltage applied (typical values).
C(pF)
1.0
RF(
Ω
)
F=10kHz
Tj=25°C
0.9
0.8
0.7
0.6
F=1MHz
Vosc=30mV
RMS
Tj=25°C
10
0.5
0.4
0.3
0.2
IF(mA)
1
1.0
10.0
100.0
0.1
0.0
0.0
2.5
5.0
VR(V)
7.5
10.0
12.5
15.0
Fig. 5:
Variation of thermal impedance junction to
ambient versus pulse duration (printed circuit
board, epoxy FR4).
Zth(j-a)(°C/W)
1000.0
Fig. 6:
Thermal resistance junction to ambient
versus copper surface under each lead (printed
circuit board, epoxy FR4)..
Rth(j-a)
600
550
500
100.0
450
400
tp(s)
10.0
1.E-02
1.E-01
1.E+00
1.E+01
1.E+02
350
S(mm²)
300
0
5
10
15
20
25
30
35
40
45
50
3/6
STDD15 series
Electrical Model (PSPICE)
Parameter
Is
N
M
Vj
Eg
Xti
Rs
Cjo
Bv
Ibv
Value
2.66 e-8
1.04
0.772
0.65
0.69
2
15
0.85 e-12
20
10 e-3
W
F
V
A
V
eV
Unit
A
PACKAGE MECHANICAL DATA
SOT323-3L
DIMENSIONS
A
REF.
A1
D
Millimeters
Min.
Typ. Max.
1.1
0.1
0.4
Min.
0.031
0.0
0.010
Inches
Typ. Max.
0.043
0.004
0.016
0.010
A
A1
b
b
0.8
0.0
0.25
0.1
1.8
1.15
2.0
1.25
0.65
1.8
0.1
0
2.1
0.2
c
D
E
0.26 0.004
2.2
L
0.071 0.079 0.086
1.35 0.045 0.049 0.053
0.026
2.4
0.3
30°
0.071 0.083 0.094
0.004 0.008 0.012
0
30°
H
E
e
H
L
θ
θ
c
e
FOOTPRINT
(in millimeters)
0.95
2.9
1
0.8
0.50
4/6
STDD15 series
PACKAGE MECHANICAL DATA
SOT323-6L
DIMENSIONS
A
A2
A1
REF.
A
A1
A2
Millimeters
Min.
0.8
0
0.8
0.15
0.1
1.8
1.15
1.8
0.1
0.1
Max.
1.1
0.1
1
0.3
0.18
2.2
1.35
2.4
0.4
0.45
Inches
Min.
0.031
0
0.031
0.006
0.004
0.071
0.045
0.071
0.004
0.004
Max.
0.043
0.004
0.039
0.012
0.007
0.086
0.053
0.094
0.016
0.018
D
e
L
e
b
c
D
E
e
HE
HE
E
0.65 Typ.
0.025 Typ.
Q1
c
b
Q1
L
FOOTPRINT
(in millimeters)
0.3mm
1mm
2.9mm
1mm
0.35mm
Note:
The device fulfills the MSL level 1 after
leadfree soldering profile.
Ordering code
STDD15-04W
STDD15-05W
STDD15-07S
Marking
24
25
D25
Package
SOT323-3L
SOT323-3L
SOT323-6L
Weight
0.006 g
0.006 g
0.006 g
Base qty
3000
3000
3000
Delivery mode
Tape & reel
Tape & reel
Tape & reel
5/6
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