1.5SMC6.8A thru 1.5SMC550CA
Surface Mount Transient Voltage Suppressors
Peak Pulse Power 1500W Breakdown Voltage 6.8 to 550V
Features
ꢀ Low profile package with built-in strain relief for surface
mounted applications
ꢀ Glass passivated junction
ꢀ Low incremental surge resistance
ꢀ Low inductance
ꢀ Excellent clamping capability
ꢀ 1500W peak pulse power capability with a 10/1000us
waveform, repetition rate (duty cycle): 0.01%
ꢀ Very fast response time
ꢀ High temperature soldering: 250oC/10 seconds at terminals
ꢀ Plastic package has Underwriters Laboratory Flammability
Classification 94V-0
Mechanical Data
ꢀ Case: JEDEC DO-214AB (SMC) molded plastic over passivated
junction
ꢀ Terminals: Solder plated, solderable per MIL-STD-750,
Method 2026
ꢀ Polarity: For uni-directional types the band denotes the cathode,
which is positive with respect to the anode under normal TVS
operation
ꢀ Weight: 0.007oz., 0.21g
Devices for Bidirectional Applications
For bi-directional devices, use suffix CA (e.g. 1.5SMC10CA). Electrical characteristics apply in both directions.
Maximum Ratings and Thermal Characteristics
(Ratings at 25oC ambient temperature unless otherwise specified.)
Parameter
Symbol
Value
Unit
Peak pulse power dissipation with
PPPM
Minimum 1500
W
a 10/1000us waveform (1) (2) (Fig. 1)
Peak pulse current with a 10/1000us waveform (1) (Fig. 3)
IPPM
See Next Table
6.5
A
Power dissipation on infinite heatsink, TA=50oC
PM(AV)
W
Peak forward surge current 8.3ms single half sine-wave
uni-directional only (2)
IFSM
200
Amps
Thermal resistance junction to ambient air (3)
RθJA
RθJL
75
15
oC/W
oC/W
oC
Thermal resistance junction to leads
Operating junction and storage temperature range
TJ, TSTG
-55 to +150
Notes:
1. Non-repetitive current pulse, per Fig.3 and derated above TA=25oC per Fig. 2
2. Mounted on 0.31 x 0.31" (8.0 x 8.0mm) copper pads to each terminal
3. Mounted on minimum recommended pad layout
599