Datasheet SMAJ100A-TR, SMAJ10A-TR, SMAJ10CA-TR, SMAJ100CA-TR, SMAJ12A-TR Datasheet (SGS Thomson Microelectronics)

SMA J 5.0A-TR,CA-TR

SMA J 188A -TR,CA -TR

TRANSIL

TM

®

PEAK PULSE POW ER : 400 W (10/1000µs)
STAND OFF VOLTAGE RANGE :

From 5V to 188V.
UNI AND BID IRECTIONA L T YPES
LOW CLAMPING FACTO R
FAST RESPONSE TIME
JEDEC REGISTERED PACKAGE OUTLINE

FEATURES

SMA

(JEDEC D0214 AC)

Symbol Parameter Value Unit

P

PP

Peak pulse power dissipation (see note 1) Tj initial = T

amb

400 W

P Power dissipation on infinite heatsink T

amb = 50

°C3.3W

I

FSM

Non repetitive surge peak forward
current for unidirectional types

tp = 10ms
Tj initial = T

amb

40 A

T

stg

T

j

Storage temperature range
Maximum junction temperature

- 65 to + 175
150

°C
°C

T

L

Maximum lead temperature for soldering during 10 s. 260 °C

Note 1

: For a surge greater than the maximum valu es, the diode wil l fail in short-ci rcuit.

ABSOL UTE M AXIMU M RA TIN GS (T

amb

= 25°C)

DESCRIPTION

The SMAJ series are TRANSIL

TM

diodes designed
specifically for protecting sensitive equipment
against transient overvoltages. The SMA package
allows save spacing on high density printed circuit
boards.

Transil diodes provide high overvoltage protection
by clamping action. Their instantaneous response
to trans ient over voltage s makes them pa rticula rly
suite d to prot ect volt age sensit ive devic es such
as MOS Technology and low voltage supplied
IC’s.

September 1998 Ed: 5A

Symbol Parameter Value Unit

R

th (j-l)

Junction to leads 30 °C/W

R

th (j-a)

Junction to ambient on printed circuit on recommended pad
layout

120 °C/W

THERMAL RE SISTA NC ES

1/5

I

I

F

V

F

VV

CLVBR

V

RM

I

PP

I

RM

V

Symbol Parameter

V

RM

Stand-off voltage

V

BR

Breakdown voltage

V

CL

Clamping voltage

I

RM

Leakage current @ V

RM

I

PP

Peak pulse current

α

T Voltage temperature coefficient

V

F

Forward voltage drop

ELECTRICAL CHARACTERISTICS (T

amb

= 25°C)

Types

I

RM

@ VRMVBR @ IRVCL @ I

PPVCL

@ I

PP

α

TC

max min max max max typ

note2 10/1000µs 8/20µs note3 note4

Unidirectional Mark. Bidirectional Mark. µAV VmAV A V A10

-4

/°CpF
SMAJ5.0A-TR AE SMAJ5.0CA-TR AA 800 5.0 6 .4 10 9 .2 43.5 13.4 174 5.7 3500
SMAJ6.0A-TR DUB SMAJ6.0CA-TR DBB 800 6.0 6.7 10 10.3 38.8 13.7 170 5.9 3300
SMAJ6.5A-TR DUC SMAJ6.5CA-TR DBC 500 6.5 7.2 10 11.2 35.7 14.5 160 6.1 3100
SMAJ8.5A-TR DUH SMAJ8.5CA-TR DBH 10 8.5 9 .44 1 14.4 27.7 18.6 124 7.3 2000
SMAJ10A-TR AX SMAJ10CA-TR AC 5 10 11.1 1 17 23.5 21.7 106 7.8 1550
SMAJ12A-TR DUK SMAJ12CA-TR DBK 5 12 13.3 1 19.9 20.1 25.3 91 8.3 1325
SMAJ13A-TR BG SMAJ13CA-TR BH 1 13 14.4 1 21.5 18.6 27.2 85 8.4 1200
SMAJ15A-TR BM SMAJ15CA-TR AJ 1 15 16.7 1 24.4 16.4 32.5 71 8.8 975
SMAJ18A-TR DUQ SMAJ18CA-TR DBQ 1 18 20 1 29.2 13.7 39.3 59 9.2 800
SMAJ20A-TR DUR SMAJ20CA-TR DBR 1 20 22.2 1 32.4 12.3 42.8 54 9.4 725
SMAJ22A-TR DUS SMAJ22CA-TR DBS 1 22 24.4 1 35.5 11.2 48.3 48 9.6 625
SMAJ24A-TR DUT SMAJ24CA-TR DBT 1 24 26.7 1 38.9 10.3 50 46 9.6 600
SMAJ26A-TR DUU SMAJ26CA-TR DBU 1 26 28.9 1 42.1 9.5 53.5 43 9.7 575
SMAJ28A-TR CG SMAJ28CA-TR CH 1 28 31.1 1 45.4 8.8 59 39 9.8 510
SMAJ30A-TR CK SMAJ30CA-TR CL 1 30 33.3 1 48.4 8.3 64.3 36 9.9 480
SMAJ33A-TR CM SMAJ33CA-TR CN 1 33 36.7 1 53.3 7.5 69.7 33 10.0 450
SMAJ40A-TR DUZ SMAJ40CA-TR DBZ 1 40 44.4 1 64.5 6.2 84 27 10.1 370
SMAJ43A-TR EUA SMAJ43CA-TR EBA 1 43 47.8 1 69.4 5.7 91 25 10.2 350
SMAJ48A-TR CX SMAJ48CA-TR CY 1 48 53.3 1 77.4 5.2 100 23 10.3 320
SMAJ58A-TR EUF SMAJ58CA-TR EBF 1 58 64.4 1 93.6 4.3 121 19 10.4 270
SMAJ70A-TR EUI SMAJ70CA-TR EBI 1 70 77.8 1 113 3.5 146 16 10.5 230
SMAJ85A-TR EUL SMAJ85CA-TR EBL 1 85 94.4 1 137 2.9 178 13 10.6 200
SMAJ100A-TR EUN SMAJ100CA-TR EBN 1 100 111 1 162 2.5 212 11 10.7 170
SMAJ130A-TR EUQ SMAJ130CA-TR EBQ 1 130 144 1 209 1.9 265 9 10.8 145
SMAJ154A-TR EUT SMAJ154CA-TR EBT 1 154 171 1 246 1.6 317 7 10.8 125
SMAJ170A-TR SR SMAJ170CA-TR SS 1 170 189 1 275 1.4 353 6.5 10.8 120
SMAJ188A-TR EUV SMAJ188CA-TR EBV 1 188 209 1 328 1.4 388 6 10.8 110

Note 2 :

Pulse test : tp < 50 ms.

Note 3 :

∆

VBR = αT * (T

amb

- 25) * VBR(25°C).

Note 4 :

VR = 0 V, F = 1 MHz. For bidirectional types,

capacitance value is divided by 2.

10 s

1000 s

%I

PP

50

0

t

PULSE WAVEFORM 10/1000 s

100

SMAJxxxA-TR, CA-TR

2/5

0 25 50 75 100 125 150 175

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

Ppp[Tj initial]/Ppp[Tj initial=25°C]

Tj initial(°C)

Fig 1: Peak power dissipation versus initial
junction temperature.

0.01 0.10 1.00 10.00

100

1000

5000

Ppp(W)

tp(ms)

Fig 2: Peak pulse power versus exponential pulse
duration (Tj initial=25°C).

1 10 100 500

0.1

1.0

10.0

100.0

200.0

Ipp(A)

tp=20µs

tp=1ms

SMAJ5.0A,CA

SMAJ188A,CA

SMAJ58A,CA

SMAJ26A,CA

SMAJ13A,CA

V (V)

CL

Fig 3: Clamping voltage versus peak pulse current
(Tj initial=25° C)
Exponential waveform tp=20µs & tp=1ms.

1 10 100 200

10

100

1000

5000

C(pF)

F=1MHz

SMAJ5.0A

SMAJ188A

SMAJ58A

SMAJ26A

SMAJ13A

V (V)

R

Fig 4-1: Capacitance versus reverse applied
voltage (typical values) (SMAJxxA).

1 10 100 200

1

10

100

1000

2000

F=1MHz

SMAJ5.0CA

SMAJ188CA

SMAJ58CA

SMAJ26CA

SMAJ13CA

C(pF)

V (V)

R

Fig 4-2: Capacitance versus reverse applied
voltage (typical values) (SMAJxxCA).

SMAJxxxA-TR, CA-TR

3/5

0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4

0.01

0.10

1.00

10.00

I (A)

FM

Tj=25°C

Tj=125°C

V (V)

FM

Fig 5: Peak forward voltage drop versus peak
forward current (typical values).

1E-2 1E-1 1E+0 1E+1 1E+2 5E+2

0.01

0.10

1.00

Zth(j-a)/Rth(j-a)

tp(s)

Fig 6: Relative variation of thermal impedance
junction to ambient versus puls e dur ation.

012345

40

50

60

70

80

90

100

110

120

130

140

Rth(j-a) (°C/W)

S(Cu)(cm²)

Fig 7: Thermal resistance junction to ambient
versus copper surface under each lead
(printed circuit board FR4 e(C u)=35µm).

0 25 50 75 100 125 150

1E-1

1E+0

1E+1

1E+2

1E+3

2E+3

I [Tj] / I [Tj=25°C]

RR

V < 8.5V

BR

Tj(°C)

V 8.5V

BR ≥

Fig 8: Relative variation of leakage current versus
junction temperature.

SMAJxxxA-TR, CA-TR

4/5

REF.

DIMENSIONS

Millimeters Inches

Min. Max. Min. Max.

A1 1.90 2.70 0.075 0.106
A2 0.05 0.20 0.002 0.008

b 1.25 1.65 0.049 0.065
c 0.15 0.41 0.006 0.016
E 4.80 5.60 0.189 0.220

E1 3.95 4.60 0.156 0.181

D 2.25 2.95 0.089 0.116
L 0.75 1.60 0.030 0.063

Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for
the consequences of use of such information nor for any infringement of patents or other rights of third parties which may
result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics.
Specifications mentioned in this publi cation are subject to change without notice. This p ublication supersede s and replaces
all information previo usly supplied.
STMicroelectronics products are not authorized for use as critical components in life support devices or systems without
express written approval of STMicroe lectronics.

The ST logo is a registered trademark of STMicro electroni cs

© 1998 STMicroelectronics - Printed in Italy - All rights reserved.

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Packaging

: standard packaging is in tape and r eel.

PACKAGE MECHANICAL DAT A

SMA (Plastic)

E

C

L

E1

D

A1

A2

b

MARKING : Logo, Date Code, Type Code, Cathode Band (for unidirectional types only).

FOOTPRINT DIMENSIONS (Millimeter)

SMA Plastic.

2.40

1.65

1.45 1.45

Weight

= 0.068 g

ORDER CODE

SM A J 85 C A - TR

BIDIRECTIONAL
No suffix : Unidirectional

SURFACE MOUNT

STAND OFF VOLTAGE

400 WATTS

TAPE & REEL

SMAJxxxA-TR, CA-TR

5/5