STDD15-05WFILM - STMicroelectronics

1/6

STDD15 series

August 2002 - Ed: 3A

LOW CAPACITANCE DETECTION DIODE

The STDD15 is a dual diode series for the

detection of a RF signal and the compensation of

thevoltagedriftwiththetemperature.TheSOT323

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

DESCRIPTION

■Low diode capacitance

■Device designed for RF application

■Low profile package

■Available in 3 configurations

■Very low parasitic inductor & resistor

FEATURES AND BENEFITS

Symbol Parameter Value Unit

VRRM Repetitive peak reverse voltage 15 V

IFContinuous forward current 10 mA

IFSM Surge non repetitive forward current tp = 10ms 2 A

Tstg Storage temperature range - 65 + 150 °C

Tj Maximum operating junction temperature 150 °C

ABSOLUTE RATINGS (limiting values)

IF(AV) 10 mA

VRRM 15 V

Tj (max) 150 °C

VF(max) 0.51 V

MAIN PRODUCT CHARACTERISTICS

SOT323-3L

STDD15-xxW SOT323-6L

STDD15-xxS

Series configuration

STDD15-04W

Parallel configuration

STDD15-07S

Common cathode configuration

STDD15-05W

SCHEMATIC DIAGRAM

STDD15 series

2/7

Symbol Parameter Tests conditions Min. Typ. Max. Unit

IR* Reverse leakage

current Tj = 25°C VR= 1V 0.035 µA

Tj = 125°C 6 30

Tj = 25°C VR= 15V 0.23 µA

Tj = 125°C 10 100

VF* Forward voltage drop Tj = 25°C IF= 1 mA 350 380 mV

Tj = 125°C 230 260

Tj = 25°C IF= 10 mA 500 570

Tj = 125°C 450 510

* Pulse test: tp ≤250µs, Delta ≤2%

STATIC ELECTRICAL CHARACTERISTICS

Symbol Parameter Value Unit

Rth (j-a)* Junction to ambient 500 °C/W

*: Mounted with minimum recommended pad size, PC board FR4.

THERMAL PARAMETERS

Symbol Parameter Tests conditions Min. Typ. Max. Unit

C Diode capacitance VR= 0 V F = 1MHz 1.0 pF

RFForward resistance IF= 5 mA F = 100MHz 15 Ω

Ls Series inductance 1.5 nH

ELECTRICAL CHARACTERISTICS

STDD15 series

3/6

1.E-01

1.E+00

1.E+01

1.E+02

0.0 0.2 0.4 0.6 0.8 1.0 1.2

VFM(V)

Tj=125°CTj=125°C

Tj=85°CTj=85°C

Tj=25°CTj=25°C

Tj=-40°CTj=-40°C

IFM(mA)

Fig. 1: Forward voltage drop versus forward

current (typical values).

1.E-03

1.E-02

1.E-01

1.E+00

1.E+01

1.E+02

0.0 2.5 5.0 7.5 10.0 12.5 15.0

VR(V)

Tj=125°C

Tj=85°C

Tj=25°C

IR(µA)

Fig. 2: Reverse leakage current versus reverse

voltage applied (typical values).

100

1.0 10.0 100.0

IF(mA)

F=10kHz

Tj=25°C

RF( )Ω

Fig. 3: Differential forward resistance versus

forward current (typical values).

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

0.0 2.5 5.0 7.5 10.0 12.5 15.0

VR(V)

F=1MHz

Vosc=30mVRMS

Tj=25°C

C(pF)

Fig. 4: Junction capacitance versus reverse

voltage applied (typical values).

10.0

100.0

1000.0

1.E-02 1.E-01 1.E+00 1.E+01 1.E+02

tp(s)

Zth(j-a)(°C/W)

Fig. 5: Variation of thermal impedance junction to

ambient versus pulse duration (printed circuit

board, epoxy FR4).

300

350

400

450

500

550

600

0 5 10 15 20 25 30 35 40 45 50

S(mm²)

Rth(j-a)

Fig. 6: Thermal resistance junction to ambient

versus copper surface under each lead (printed

circuit board, epoxy FR4)..

STDD15 series

4/6

PACKAGE MECHANICAL DATA

SOT323-3L

REF.

DIMENSIONS

Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A 0.8 1.1 0.031 0.043

A1 0.0 0.1 0.0 0.004

b 0.25 0.4 0.010 0.016

c 0.1 0.26 0.004 0.010

D 1.8 2.0 2.2 0.071 0.079 0.086

E 1.15 1.25 1.35 0.045 0.049 0.053

e 0.65 0.026

H 1.8 2.1 2.4 0.071 0.083 0.094

L 0.1 0.2 0.3 0.004 0.008 0.012

θ0 30° 0 30°

0.95

0.50

2.9

0.8

FOOTPRINT (in millimeters)

Parameter Value Unit

Is 2.66 e-8 A

N 1.04

M 0.772

Vj 0.65 V

Eg 0.69 eV

Xti 2

Rs 15 W

Cjo 0.85 e-12 F

Bv 20 V

Ibv 10 e-3 A

Electrical Model (PSPICE)

STDD15 series

5/6

PACKAGE MECHANICAL DATA

SOT323-6L

AA1

Q1 c

REF.

DIMENSIONS

Millimeters Inches

Min. Max. Min. Max.

A 0.8 1.1 0.031 0.043

A1 0 0.1 0 0.004

A2 0.8 1 0.031 0.039

b 0.15 0.3 0.006 0.012

c 0.1 0.18 0.004 0.007

D 1.8 2.2 0.071 0.086

E 1.15 1.35 0.045 0.053

e 0.65 Typ. 0.025 Typ.

HE 1.8 2.4 0.071 0.094

Q1 0.1 0.4 0.004 0.016

L 0.1 0.45 0.004 0.018

0.3mm

1mm

0.35mm

2.9mm

FOOTPRINT (in millimeters)

Note: The device fulfills the MSL level 1 after

leadfree soldering profile.

Ordering code Marking Package Weight Base qty Delivery mode

STDD15-04W 24 SOT323-3L 0.006 g 3000 Tape & reel

STDD15-05W 25 SOT323-3L 0.006 g 3000 Tape & reel

STDD15-07S D25 SOT323-6L 0.006 g 3000 Tape & reel

STDD15 series

6/6

Informationfurnishedisbelievedtobeaccurateandreliable.However,STMicroelectronicsassumesnoresponsibilityfortheconsequencesof

useofsuch information nor for any infringement of patentsorotherrightsofthirdpartieswhichmay result from its use. No license isgrantedby

implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to

change without notice. This publication supersedes and replaces all information previously supplied.

STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written ap-

proval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics

STMicroelectronics GROUP OF COMPANIES

Australia - Brazil - Canada - China - Finland - France - Germany

Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore

Spain - Sweden - Switzerland - United Kingdom - United States.

http://www.st.com