STPS1L40AY Datasheet STPS1L40ZFY, STPS1L40AY, BAV19W-7 | P1-P3

October 2016

DocID018247 Rev 2

1/13

This is information on a product in full production.

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STPS1L40-Y

Automotive low drop power Schottky rectifier

Datasheet - production data

Features

 AEC-Q101 qualified

 Very small conduction losses

 Negligible switching losses

 Low forward voltage drop

 Surface mount miniature packages

 Avalanche capability specified

 PPAP capable

Description

Single chip Schottky rectifiers suited to switched

mode power supplies and high frequency DC to

DC converters.

Packaged in SOD123Flat, SMA and SMB, this

device is especially intended for surface

mounting and used in low voltage, high frequency

inverters, free-wheeling and polarity protection in

automotive applications.

Table 1: Device summary

Symbol

Value

I

F(AV)

1 A

V

RRM

40 V

V

F

(typ.)

0.37 V

T

j

(max.)

175 °C

K

A

SMBSMA

K

A

K

A

SOD123Flat

A

K

Characteristics

STPS1L40-Y

2/13

DocID018247 Rev 2

1 Characteristics

Table 2: Absolute ratings (limiting values at 25 °C, unless otherwise specified)

Symbol

Parameter

Value

Unit

V

RRM

Repetitive peak reverse voltage

T

j

= -40 °C to +175 °C

40

V

I

F(AV)

Average forward current

δ = 0.5, square wave

SMA/SMB: T

L

= 155 °C

1

A

SOD123Flat: T

L

= 160 °C

I

FSM

Surge non repetitive forward current,

t

p

= 10 ms sinusoidal

SMA/SMB

60

A

SOD123Flat

50

P

ARM

Repetitive peak avalanche power

t

p

= 10 µs, T

j

= 125 °C

65

W

T

stg

Storage temperature range

-65 to +175

°C

T

j

Operating junction temperature range

(1)

-40 to +175

Notes:

(1)

(dP

tot

/dT

j

) < (1/R

th(j-a)

) condition to avoid thermal runaway for a diode on its own heatsink.

Table 3: Thermal parameters

Symbol

Parameter

Max. value

Unit

R

th(j-l)

Junction to lead

SMA

30

°C/W

SMB

25

SOD123Flat

20

Table 4: Static electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

I

R

(1)

Reverse leakage current

T

j

= 25 °C

V

R

= V

RRM

-

35

µA

T

j

= 125 °C

-

6

10

mA

V

F

(2)

Forward voltage drop

T

j

= 25 °C

I

F

= 1 A

-

0.50

V

T

j

= 125 °C

-

0.37

0.42

Notes:

(1)

Pulse test: t

p

= 5 ms, δ < 2%

(2)

Pulse test: t

p

= 380 µs, δ < 2%

To evaluate the conduction losses, use the following equation:

P = 0.23 x I

F(AV)

+ 0.19 x I

F

2

(RMS)

For more information, please refer to the following application notes related to the power

losses.

 AN604 (Calculation of conduction losses in a power rectifier)

 AN4021 (Calculation of reverse losses in a power diode)

STPS1L40-Y

Characteristics

DocID018247 Rev 2

3/13

1.1 Characteristics (curves)

Figure 1: Average forward power dissipation

versus average forward current

Figure 2: Average forward current versus ambient

temperature (δ = 0.5)

Figure 3: Average forward current versus ambient

temperature (δ = 0.5)

Figure 4: Average forward current versus ambient

temperature (δ = 0.5)

Figure 5: Normalized avalanche power derating

versus pulse duration (T

j

= 125 °C)

Figure 6: Relative variation of thermal impedance

junction to ambient versus pulse duration

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

δ = 0.05

δ = 0.1

δ = 0.2 δ = 0.5

δ = 1

T

δ

= tp/T

tp

I

F(AV)

(A)

P

F(AV)

(W)

I

F(AV)

(A)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0 25 50 75 100 125 150 175

R

th(j-a)

= R

th(j-l)

T

δ

= tp/T

tp

SMA

T

amb

(°C)

I

F(AV)

(A)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

0 25 50 75 100 125 150 175

R

th(j-a)

= R

th(j-l)

T

= tp/T

tp

δ

SMB

T

amb

(°C)

0

1

2

3

4

5

0 25 50 75 100 125 150 175

R

th(j-a)

= R

th(j-l)

T

δ

= tp/T

tp

SOD123 flat

T

amb

(°C)

I

F(AV)

(A)

P (t

p

)

P (10 µs)

ARM

0.001

0.01

0.1

1

1 10 100 1000

t (µs)

p

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03

t

P

(s)

Single pulse

SMA

Z

th(j-a)

/R

th(j-a)

Epoxy printed circuit board,

copper thickness = 35 µm, 

recommended pad layout

STPS1L40AY

STPS1L40AY

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