This is information on a product in full production.
October 2014 DocID027018 Rev1 1/8
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STPS1170
Power Schottky rec t ifier
Datasheet − production data
Features
•Neglig i b le s w itc hing los s e s
•High junction temperature c apability
•Very small conduction losses
•Low leakage current
•Avalanche rated
•ECOPACK® compliant component
•Tj = -40 °C mi nimum operating
Description
The STPS1170 i s a 170 V Schottky rectifier suited
for switch mode power supplies and high
frequency DC to DC con verters.
Pack aged in SMAf lat, this device is especially
intended for use in low voltage, high frequency
inverters, freewheel ing and polarity protection.
Also ideal for all LED lighting appl ications where
efficiency and space constraint are required.
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Table 1. Device summary
Symbol Value
IF(AV) 1 A
VRRM 170 V
VF (typ) 0.62 V
Tj (max) 175 °C
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Characteristics STPS1170
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1 Characteristics
To evaluate the conduction loss es use the following equation:
P = 0.59 x IF(AV) + 0.08 x IF2(RMS)
Table 2. Absolute ratings (limiting values at 25 °C, unless otherwise specified)
Symbol Parameter Value Unit
VRRM Repetitive peak reverse vol tage 170 V
VRRM Repetitive peak reverse vol tage, Tj = -40 °C 160 V
IF(RMS) Forward rms current 15 A
IF(AV) Average forward current, δ = 0.5, square wave SMAflat, TL = 160 °C 1A
IFSM Surge non repetitive forward current tp = 10 ms sinusoidal 45 A
PARM(1) Repet it ive peak avalanche power, square wave tp = 1 0 µs , T j = 125 °C 110 W
Tstg Storage temp erat ure range -65 to +175 °C
TjOperat ing junction temper ature(2) -40 to +175 °C
1. For pulse time duration deratings, please refer to Figure 3. Mo re detai ls regarding t he avalanche energy measureme nts
and diode vali dati on in the avalanche are provided in the STMicroelectronics Applicat ion notes AN17 68, “A dmissi ble
avalanche power of Schottky diodes” and AN2025, “Converter improvement using Schottky rectifier avalanche
specification”.
2. condition to avoid thermal runaway for a diode on its own heatsink
dPtot
dTj
--------------- 1
Rth j a–()
--------------------------
<
Table 3. Ther mal parameters
Symbol Parameter Value Unit
Rth(j-l) Junction to lead, SMAflat 20 °C/W
Table 4. Static electrical characteristics
Symbol Parameter Test condi ti ons Min. Typ. Max . Unit
IR(1) Reverse leakage current Tj = 25 °C VR = VRRM 1.5 µA
Tj = 125 °C 0.25 1.5 mA
VF(2) Forward vol tag e drop
Tj = 25 °C IF = 1 A 0.82
V
Tj = 125 °C 0.62 0.67
Tj = 25 °C IF = 2 A 0.89
Tj = 125 °C 0.69 0.75
1. Pulse tes t: tp = 5 ms, δ < 2%
2. Pulse tes t: tp = 380 µs, δ < 2%
DocID027018 Rev1 3 /8
STPS1170 Characteristics
Figure 1. Average forward pow er dissi pation
versus averag e forward current Figure 2. Average forward current versus
amb ient tem pera ture (δ = 0.5)
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Figure 3. Normalized avalanche power derating
versus pulse du ration
(pulse > 10 µs, Tj<150°C)
Figure 4. Relative variation of therm al
imped an ce junction to lead versus pulse
duration
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Figure 5. Reve rse leakage cu rrent versus
reverse vol tage applied (typical values) Figure 6. Juncti on capacitance versus reverse
voltage app lied (typical values)
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Characteristics STPS1170
4/8 Do cID027018 Rev1
Figure 9. T hermal resista nce junction to ambient versus cop per surface und er each lead (typical
values)
Fi gur e 7. Fo rward volta ge dr op versus forward
current (typical values) Figure 8. Forward voltage drop versus forward
current (maximu m values)
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DocID027018 Rev1 5 /8
STPS 117 0 Packag e inform ation
2 Package information
•Epoxy meets UL94,V0
•Lead-free package
•Band indic ates cathode
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depe nding on their level of environmen tal compliance. ECO PACK ®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Figu re 10 . SM Af lat di m e nsio ns def i ni t io ns
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Pack age information STPS1170
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Fi gur e 11 . S MAfla t footpri nt, dimensions in mm ( i nches)
Figure 12. Marking informations
Table 5. SMAflat dimension values
Ref.
Dimensions
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 0.90 1.10 0.035 0.043
b 1.25 1.65 0.049 0.065
c 0.15 0.40 0.006 0.016
D 2.25 2.95 0.088 0.116
E 4.80 5.60 0.189 0.220
E1 3.95 4.60 0.156 0.181
L 0.75 1.50 0.030 0.059
L1 0.50 0.019
L2 0.50 0.019
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DocID027018 Rev1 7 /8
STPS 1170 Order in g inform ation
3 Ordering information
4 Revision history
Table 6. Ordering information
Order code Marking Package Weight Base qty Delivery mode
STPS1170AF F1170 SMAflat 0.035 g 10000 Tape and reel
Table 7. Document revision history
Date Revision Changes
14-Oct-2014 1 First release.
STPS1170
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