Transient Voltage Suppression Diodes
Surface Mount 400W > SMAJ series
RoHS
SMAJ Series
Description
The SMAJ series is designed specically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Features
SFF t)BMPHFO' t BTUSFTQPOTFUJNF '
typically less than 1.0ps
P)4DPNQMJBOU t3
from 0 Volts to V min
BR
t BDFNPVOUFE PSTVSG '
t ZQJDBM* 5 less than 1A
applications to optimize
R
above 12V
board space
t VSF )JHIUFNQFSBU
LBHF XQSPmMFQBD P t-
Agency Approvals
soldering: 260C/40
t#VJMUJOTUSBJOSFMJFG
seconds at terminals
AGENCY AGENCY FILE NUMBER
BUFEKVODUJPO t(MBTTQBTTJW
t ZQJDBMNBYJNVN 5
E230531 XJOEVDU PBODF t-
temperature coefcient
t DFMMFOUDMBNQJOH &Y
V = 0.1% x V @25C x T
BR BR
capability
t LBHFIBT 1MBTUJDQBD
t FS X VMTFQP FBL1 81
Maximum Ratings and Thermal Characteristics
Underwriters Laboratory
capability at 10 x 1000s
O
Flammability 94V-O
(T =25 C unless otherwise noted)
A
waveform, repetition rate
t FBEoGSFF 5JO- UF .BU
(duty cycle): 0.01%
Parameter Symbol Value Unit
Plated
Peak Pulse Power Dissipation at
T =25C by 10x1000s waveform P 400 W
A PPM
(Fig.1)(Note 1), (Note 2)
Power Dissipation on innite heat
Applications
P 3.3 W
O M(AV)
sink at T =50 C
A
TVS devices are ideal for the protection of I/O Interfaces,
Peak Forward Surge Current, 8.3ms
I 40 A
FSM
V bus and other vulnerable circuits used in Telecom,
Single Half Sine Wave (Note 3)
CC
Computer, Industrial and Consumer electronic applications.
Maximum Instantaneous Forward
Voltage at 25A for Unidirectional V 3.5V/6.5 V
F
only (Note 4)
Operating Junction and Storage
T , T -65 to 150 C
J STG
Temperature Range
Typical Thermal Resistance Junction
R 30 C/W
uJL
to Lead
Typical Thermal Resistance Junction
R 120 C/W
uJA
to Ambient
Notes:
1. Non-repetitive current pulse, per Fig.3 and derated above T =25C per Fig. 2.
A
2. Mounted on 5.0x5.0mm copper pad to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional
device only.
4. V < 3.5V for V _< 200V and V < 6.5V for V >_ 201V.
F BR F BR
2009 Littelfuse, Inc.
7 SMAJ Series
Specications are subject to change without notice.
Revision: January 09, 2009
Please refer to Transient Voltage Suppression Diodes
Surface Mount 400W > SMAJ series
Electrical Characteristics
Maximum Maximum Maximum
Breakdown Test
Reverse Agency
Part Part Clamping Peak Reverse
Marking Voltage V
Current
Stand off BR Approval
Number Number Voltage V Pulse Leakage I
C R
(Volts) @ I
Voltage V
T I
R
(Uni) (Bi) T @ I Current I @ V
pp pp R
(Volts)
UNI BI MIN MAX (mA) (V) (A) (A)
SMAJ5.0ASMAJ5.0CA AE WE 5.0 6.40 07.00 10 9.2 43.5 800 X
SMAJ6.0ASMAJ6.0CA AG WG 6.0 6.67 07.37 10 10.3 38.8 800 X
SMAJ6.5ASMAJ6.5CA AK WK 6.5 7.22 7.98 10 11.2 35.7 500 X
SMAJ7.0ASMAJ7.0CA AM WM 7.0 7.78 8.60 10 12.0 33.3 200 X
SMAJ7.5ASMAJ7.5CA AP WP 7.5 8.33 9.21 1 12.9 31.0 100 X
SMAJ8.0ASMAJ8.0CA AR WR 8.0 8.89 9.83 1 13.6 29.4 50 X
SMAJ8.5ASMAJ8.5CA AT WT 8.5 9.44 10.40 1 14.4 27.8 20 X
SMAJ9.0ASMAJ9.0CA AV WV 9.0 10.00 11.10 1 15.4 26.0 10 X
SMAJ10A SMAJ10CA AX WX 10.0 11.10 12.30 1 17.0 23.5 5 X
SMAJ11A SMAJ11CA AZ WZ 11.0 12.20 13.50 1 18.2 22.0 1 X
SMAJ12A SMAJ12CA BE XE 12.0 13.30 14.70 1 19.9 20.1 1 X
SMAJ13A SMAJ13CA BG XG 13.0 14.40 15.90 1 21.5 18.6 1 X
SMAJ14A SMAJ14CA BK XK 14.0 15.60 17.20 1 23.2 17.2 1 X
SMAJ15A SMAJ15CA BM XM 15.0 16.70 18.50 1 24.4 16.4 1 X
SMAJ16A SMAJ16CA BP XP 16.0 17.80 19.70 1 26.0 15.4 1 X
SMAJ17A SMAJ17CA BR XR 17.0 18.90 20.90 1 27.6 14.5 1 X
SMAJ18A SMAJ18CA BT XT 18.0 20.00 22.10 1 29.2 13.7 1 X
SMAJ20A SMAJ20CA BV XV 20.0 22.20 24.50 1 32.4 12.3 1 X
SMAJ22A SMAJ22CA BX XX 22.0 24.40 26.90 1 35.5 11.3 1 X
SMAJ24A SMAJ24CA BZ XZ 24.0 26.70 29.50 1 38.9 10.3 1 X
SMAJ26A SMAJ26CA CE YE 26.0 28.90 31.90 1 42.1 9.5 1 X
SMAJ28A SMAJ28CA CG YG 28.0 31.10 34.40 1 45.4 8.8 1 X
SMAJ30A SMAJ30CA CK YK 30.0 33.30 36.80 1 48.4 8.3 1 X
SMAJ33A SMAJ33CA CM YM 33.0 36.70 40.60 1 53.3 7.5 1 X
SMAJ36A SMAJ36CA CP YP 36.0 40.00 44.20 1 58.1 6.9 1 X
SMAJ40A SMAJ40CA CR YR 40.0 44.40 49.10 1 64.5 6.2 1 X
SMAJ43A SMAJ43CA CT YT 43.0 47.80 52.80 1 69.4 5.8 1 X
SMAJ45A SMAJ45CA CV YV 45.0 50.00 55.30 1 72.7 5.5 1 X
SMAJ48A SMAJ48CA CX YX 48.0 53.30 58.90 1 77.4 5.2 1 X
SMAJ51A SMAJ51CA CZ YZ 51.0 56.70 62.70 1 82.4 4.9 1 X
SMAJ54A SMAJ54CA RE ZE 54.0 60.00 66.30 1 87.1 4.6 1 X
SMAJ58A SMAJ58CA RG ZG 58.0 64.40 71.20 1 93.6 4.3 1 X
SMAJ60A SMAJ60CA RK ZK 60.0 66.70 73.70 1 96.8 4.1 1 X
SMAJ64A SMAJ64CA RM ZM 64.0 71.10 78.60 1 103.0 3.9 1 X
SMAJ70A SMAJ70CA RP ZP 70.0 77.80 86.00 1 113.0 3.5 1 X
SMAJ75A SMAJ75CA RR ZR 75.0 83.30 92.10 1 121.0 3.3 1 X
SMAJ78A SMAJ78CA RT ZT 78.0 86.70 95.80 1 126.0 3.2 1 X
SMAJ85A SMAJ85CA RV ZV 85.0 94.40 104.00 1 137.0 2.9 1 X
SMAJ90A SMAJ90CA RX ZX 90.0 100.00 111.00 1 146.0 2.7 1 X
SMAJ100ASMAJ100CA RZ ZZ 100.0 111.00 123.00 1 162.0 2.5 1 X
SMAJ110A SMAJ110CA SE VE 110.0 122.00 135.00 1 177.0 2.3 1 X
SMAJ120ASMAJ120CA SG VG 120.0 133.00 147.00 1 193.0 2.1 1 X
SMAJ130ASMAJ130CA SK VK 130.0 144.00 159.00 1 209.0 1.9 1 X
SMAJ150ASMAJ150CA SM VM 150.0 167.00 185.00 1 243.0 1.6 1 X
SMAJ160ASMAJ160CA SP VP 160.0 178.00 197.00 1 259.0 1.5 1 X
SMAJ170ASMAJ170CA SR VR 170.0 189.00 209.00 1 275.0 1.5 1 X
SMAJ180ASMAJ180CA ST VT 180.0 201.00 222.00 1 292.0 1.4 1
SMAJ200ASMAJ200CA SV VV 200.0 224.00 247.00 1 324.0 1.2 1
SMAJ220ASMAJ220CA SX VX 220.0 246.00 272.00 1 356.0 1.1 1
SMAJ250ASMAJ250CA SZ VZ 250.0 279.00 309.00 1 405.0 1.0 1
SMAJ300ASMAJ300CA TE UE 300.0 335.00 371.00 1 486.0 0.8 1
SMAJ350ASMAJ350CA TG UG 350.0 391.00 432.00 1 567.0 0.7 1
SMAJ400ASMAJ400CA TK UK 400.0 447.00 494.00 1 648.0 0.6 1
SMAJ440ASMAJ440CA TM UM 440.0 492.00 543.00 1 713.0 0.6 1
For bidirectional type having V of 10 volts and less, the I limit is double.
RWM R
For parts without A (V is 10% and V is 5% higher than with A parts).
BR C
2009 Littelfuse, Inc.
SMAJ Series 8
Specications are subject to change without notice.
Revision: January 09, 2009
Please refer to