RF01122, Rev. A (4/9/13) ©2013 Microsemi Corporation Page 1 of 6
LCE6.5 – LCE170A
Available
1500 Watt Low Capacitance
Transient Voltage Suppressor
DESCRIPTION
Case 1 Package
Also available in:
HiRel Case 1 package
(axial-lead)
MLCE6.5 – MXLCE170A
DO-13 (metal) package
(axial-lead)
LC6.5 – LC170A
DO-215AB and
DO-214AB package
(surface mounts)
SMCG(J)LCE6.5 –
SMCG(J)LCE170A
MSC – Lawrence
6 Lake Street,
Lawrence, MA 01841
Tel: 1-800-446-1158 or
(978) 620-2600
Fax: (978) 689-0803
MSC – Ireland
Gort Road Business Park,
Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044
Fax: +353 (0) 65 6822298
Website:
www.microsemi.com
This Transient Voltage Suppressor (TVS) product family includes a rectifier diode element in
series and in an opposite direction. This allows it to achieve low capacitance performance
below 100 pF (see figure 2). The low level of TVS capacitance may be used for protecting
higher frequency applications in inductive switching environments or electrical systems
involving secondary lightning effects per IEC61000-4-5 as well as RTCA/DO-160 or ARINC
429 for airborne avionics. With virtually instantaneous response, they also protect from ESD
and EFT per IEC61000-4-2 and IEC61000-4-4. If bipolar transient capability is required, two
of these low capacitance TVS devices may be used in parallel in opposite directions (anti-
parallel) for complete ac protection as shown in figure 4.
Important: For the latest information, visit our website http://www.microsemi.com.
FEATURES
• Unidirectional low-capacitance TVS series (for bidirectional see figure 4).
• Economical plastic encapsulated TVS series for thru-hole mounting.
• Suppresses transients up to 1500 watts @ 10/1000 µs (see figure 1 )*.
• Clamps transient in less than 100 pico seconds.
• Working voltage (VWM) range 6.5 V to 170 V.
• RoHS compliant versions available.
APPLICATIONS / BENEFITS
• Protect ion from switch ing tran sient s and induced RF.
• Low capacitance for data line protection up to 1 MHz.
• Protection for aircraft fast data rate lines up to Level 5 Waveform 4 and Level 2 Waveform 5A in
RTCA/DO-160D (also see MicroNote 130) & ARINC 429 with bit rates of 100 kb/s (per ARINC 429,
Part 1, par 2.4.1.1).
• ESD & EFT protection per IEC 61000-4-2 and -4-4.
• Secondary lightning protection per IEC61000-4-5 with 42 oh ms sour ce imp edan ce:
Class 1: LCE6. 5 to LC1 70A
Class 2: LCE6.5 to LC150A
Class 3: LCE6.5 to LC70A
Class 4: LCE6.5 to LC36A
• Secondary lightning protection per IEC61000-4-5 with 12 oh ms sour ce imp edan ce:
Class 1 : LCE6.5 to LC90A
Class 2: LCE6.5 to LC45A
Class 3: LCE6.5 to LC22A
Class 4: LCE6.5 to LC11A
• Secondary lightning protection per IEC61000-4-5 with 2 ohms source impedance:
Class 2: LCE6.5 to LC20A
Class 3: LCE6.5 to LC10A
RF01122, Rev. A (4/9/13) ©2013 Microsemi Corporation Page 2 of 6
LCE6.5 – LCE170A
MAXIMUM RATINGS
Parameters/Test Conditions
Symbol
Value
Unit
Junction and Storage Temperature
TJ and TSTG
-65 to +150
ºC
Thermal Resi stan ce, Jun cti on to Lead @ 0.375 inch (10
mm) from body
RӨJL 22 ºC/W
Thermal Resi stan ce, Jun cti on to Ambient (1)
RӨJA
82
ºC/W
Peak Pulse Power @ TL = +25 ºC (2)
PPP
1500
W
Rated Average Power Dissipation
(3)
@ TL = +40 ºC
@ TA = +25 ºC
PM(AV) 5
1.52
W
Solder Temperature @ 10 s
TSP
260
oC
Notes: 1. When mounted on FR4 PC board with 4 mm2 copper pads (1 oz) and track width 1 mm, length 25 mm.
2. At 10/1000 µs with repetit i on rate of 0.01% or less (see figure 1).
3. At 3/8 inch (10 mm) from body. TVS devices are not typically used for dc power dissipati on and are instead operated at or less than their
rated standoff volt age (VWM) except for transients t hat briefl y drive t he device into avalanche breakdown (VBR to VC region). Also see
figure 4 for further protection details in rated peak pulse power for unidirecti onal and bidirect i onal c onfigurations respectively.
MECHANICAL and PACKAGING
• CASE: Void-free transfer molded thermosetting epoxy body meeting UL94V-0.
• TERMINALS: Tin-lead or RoHS compliant anne ale d matte-tin plating readily solderable per MIL-STD-750 method 2026.
• MARKING: Part number and polar ity band.
• POLARITY: Cathode indicated by band.
• TAPE & REEL option: Standard per EIA-296 (add “TR” suffix to part number). Consult fa ctory for quan titi es.
• WEIGHT: Approx 1.5 grams.
• See Package Dimensions on last page.
PART NOMENCLATURE
LC E 6.5 A (e3)
Encapsulated Plastic Package
Reverse Standoff Voltage (VWM
(See Electrical Characteristics
RoHS Compli ance
e3 = RoHS compliant
Blank = non-RoHS compliant
+/- 5% Tolerance Level
SYMBOLS & DEFINITIONS
Symbol
Definition
I(BR)
Breakdown Current: The current used for measuring breakdown voltage V(BR).
V(BR)
Breakdown Voltage: This is the breakdown voltage the device will exhibit at 25 oC.
VWM
Rated Working Standoff Voltage: The maximum peak voltage that can be applied over the operating temperature range.
VC
Maxim um Clamping Voltage: The maximum peak voltage appearing across the TVS when subjected to the peak pulse
current in a one millisecond time interval. The peak pulse voltage is the combination of voltage rise due to both the
series resistan ce and thermal rise and positive temperatur e coef ficient αV(BR).
IPP
Peak Impulse Current: The peak current during the impulse.
PPP
Peak Pulse Power: The pulse power as determi ned by the product of VC and IPP.
ID
Standby Current: The current at the standoff voltage VWM.
RF01122, Rev. A (4/9/13) ©2013 Microsemi Corporation Page 3 of 6
LCE6.5 – LCE170A
ELECTRICAL CHARACTERISTICS @ 25 oC
MICROSEMI
PART
NUMBER
RATED
WORKING
STANDOFF
VOLTAGE
VWM
Volts
BREAKDOWN VOLTAGE MAXIMUM
STANDBY
CURRENT
ID @VWM
µA
MAXIMUM
CLAMPING
VOLTAGE
VC @ IPP
Volts
MAXIMUM
PEAK
IMPULSE
CURRENT
IPP @
10/100 0 µs
Amps
CAPACI-
TANCE
@ 0
Volts
f = 1 MHz
C
pF
WORKING
INVERSE
BLOCKING
VOLTAGE
VWIB
Volts
INVERSE
BLOCKING
LEAKAGE
CURRENT
IIB @ VWIB
µA
PEAK
INVERSE
BLOCKING
VOLTAGE
VOLTS
VPIB
Volts
V(BR)
Volts
@
I(BR)
mA
MIN
MAX
LCE6.5
LCE6.5A
LCE7.0
LCE7.0A
6.5
6.5
7.0
7.0
7.22
7.22
7.78
7.78
8.82
7.98
9.51
8.60
10
10
10
10
1000
1000
500
500
12.3
11.2
13.3
12.0
100
100
100
100
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE7.5
LCE7.5A
LCE8.0
LCE8.0A
7.5
7.5
8.0
8.0
8.33
8.33
8.89
8.89
10.2
9.21
10.9
9.83
10
10
1
1
250
250
100
100
14.3
12.9
15.0
13.6
100
100
100
100
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE8.5
LCE8.5A
LCE9.0
LCE9.0A
8.5
8.5
9.0
9.0
9.44
9.44
10.0
10.0
11.5
10.4
12.2
11.1
1
1
1
1
50
50
10
10
15.9
14.4
16.9
15.4
94
100
89
97
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE10
LCE10A
LCE11
LCE11A
10
10
11
11
11.1
11.1
12.2
12.2
13.6
12.3
14.9
13.5
1
1
1
1
5
5
5
5
18.8
17.0
20.1
18.2
80
88
74
82
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE12
LCE12A
LCE13
LCE13A
12
12
13
13
13.3
13.3
14.4
14.4
16.3
14.7
17.6
15.9
1
1
1
1
5
5
5
5
22.0
19.9
23.8
21.5
68
75
63
70
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE14
LCE14A
LCE15
LCE15A
14
14
15
15
15.6
15.6
16.7
16.7
19.1
17.2
20.4
18.5
1
1
1
1
5
5
5
5
25.8
23.2
26.9
24.4
58
65
56
61
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE16
LCE16A
LCE17
LCE17A
16
16
17
17
17.8
17.8
18.9
18.9
21.8
19.7
23.1
20.9
1
1
1
1
5
5
5
5
28.8
26.0
30.5
27.6
52
57
49
54
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE18
LCE18A
LCE20
LCE20A
18
18
20
20
20.0
20.0
22.2
22.2
24.4
22.1
27.1
24.5
1
1
1
1
5
5
5
5
32.2
29.2
35.8
32.4
46
51
42
46
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE22
LCE22A
LCE24
LCE24A
22
22
24
24
24.4
24.4
26.7
26.7
29.8
26.9
32.6
29.5
1
1
1
1
5
5
5
5
39.4
35.5
43.0
38.9
38
42
35
39
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE26
LCE26A
LCE28
LCE28A
26
26
28
28
28.9
28.9
31.1
31.1
35.3
31.9
38.0
34.4
1
1
1
1
5
5
5
5
46.6
42.1
50.1
45.4
32
36
30
33
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE30
LCE30A
LCE33
LCE33A
30
30
33
33
33.3
33.3
36.7
36.7
40.7
36.8
44.9
40.6
1
1
1
1
5
5
5
5
53.5
48.4
58.0
53.3
28
31
25.4
28.1
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE36
LCE36A
LCE40
LCE40A
36
36
40
40
40.0
40.0
44.4
44.4
48.9
44.2
54.3
49.1
1
1
1
1
5
5
5
5
64.3
58.1
71.4
64.5
23.3
25.8
21.0
23.3
100
100
100
100
75
75
75
75
10
10
10
10
100
100
100
100
LCE43
LCE43A
LCE45
LCE45A
43
43
45
45
47.8
47.8
50.0
50.0
58.4
52.8
61.1
55.3
1
1
1
1
5
5
5
5
76.7
69.4
80.3
72.7
19.5
21.6
18.7
20.6
100
100
100
100
150
150
150
150
10
10
10
10
200
200
200
200
LCE48
LCE48A
LCE51
LCE51A
48
48
51
51
53.3
53.3
56.7
56.7
65.1
58.9
69.3
62.7
1
1
1
1
5
5
5
5
85.5
77.4
91.1
82.4
17.5
19.4
16.5
18.2
100
100
100
100
150
150
150
150
10
10
10
10
200
200
200
200
Continued.
RF01122, Rev. A (4/9/13) ©2013 Microsemi Corporation Page 4 of 6
LCE6.5 – LCE170A
ELECTRICAL CHARACTERISTICS @ 25 oC (continued)
MICROSEMI
PART
NUMBER
RATED
WORKING
STANDOFF
VOLTAGE
VWM
Volts
BREAKDOWN VOLTAGE MAXIMUM
STANDBY
CURRENT
ID @VWM
µA
MAXIMUM
CLAMPING
VOLTAGE
VC @ IPP
Volts
MAXIMUM
PEAK
IMPULSE
CURRENT
IPP @
10/100 0 µs
Amps
CAPACI-
TANCE
@ 0
Volts
f = 1 MHz
C
pF
WORKING
INVERSE
BLOCKING
VOLTAGE
VWIB
Volts
INVERSE
BLOCKING
LEAKAGE
CURRENT
IIB @ VWIB
µA
PEAK
INVERSE
BLOCKING
VOLTAGE
VOLTS
VPIB
Volts
V(BR)
Volts
@
I(BR)
mA
MIN
MAX
LCE54
LCE54A
LCE58
LCE58A
54
54
58
58
60.0
60.0
64.4
64.4
73.3
66.3
78.7
71.2
1
1
1
1
5
5
5
5
96.3
87.1
103.0
93.6
15.6
17.2
14.6
16.0
100
100
100
100
150
150
150
150
10
10
10
10
200
200
200
200
LCE60
LCE60A
LCE64
LCE64A
60
60
64
64
66.7
66.7
71.1
71.1
81.5
73.7
86.9
78.6
1
1
1
1
5
5
5
5
107.0
96.8
114.0
103.0
14.0
15.5
13.2
14.6
90
90
90
90
150
150
150
150
10
10
10
10
200
200
200
200
LCE70
LCE70A
LCE75
LCE75A
70
70
75
75
77.8
77.8
83.3
83.3
95.1
86.0
102.0
92.1
1
1
1
1
5
5
5
5
125
113
134
121
12.0
13.3
11.2
12.4
90
90
90
90
150
150
150
150
10
10
10
10
200
200
200
200
LCE80
LCE80A
LCE90
LCE90A
80
80
90
90
88.7
88.7
100
100
108
98.0
122
111
1
1
1
1
5
5
5
5
142
129
160
146
10.6
11.6
9.4
10.3
90
90
90
90
150
150
300
300
10
10
10
10
200
200
200
200
LCE100
LCE100A
LCE110
LCE110A
100
100
110
110
111
111
122
122
136
123
149
135
1
1
1
1
5
5
5
5
179
162
196
178
8.4
9.3
7.7
8.4
90
90
90
90
300
300
300
300
10
10
10
10
200
200
400
400
LCE120
LCE120A
LCE130
LCE130A
120
120
130
130
133
133
144
144
163
147
176
159
1
1
1
1
5
5
5
5
214
193
231
209
7.0
7.8
6.5
7.2
90
90
90
90
300
300
300
300
10
10
10
10
400
400
400
400
LCE150
LCE150A
LCE160
LCE160A
150
150
160
160
167
167
178
178
204
185
218
197
1
1
1
1
5
5
5
5
268
243
287
259
5.6
6.2
5.2
5.8
90
90
90
90
300
300
300
300
10
10
10
10
400
400
400
400
LCE170
LCE170A
170
170
189
189
231
209
1
1
5
5
304
275
4.9
5.4
90
90
300
300
10
10
400
400
NOTE 1: TVS devices are normally selected according to the reverse standoff voltage (VWM) which should be equal to or greater than the DC or
continuous peak operati ng voltage level .
RF01122, Rev. A (4/9/13) ©2013 Microsemi Corporation Page 5 of 6
LCE6.5 – LCE170A
GRAPHS
Pulse Time (tw) in µs
FIGURE 1
Peak Pulse Power vs Pulse Time (tw) in µs
PPP - Peak Pulse Power - kW
RF01122, Rev. A (4/9/13) ©2013 Microsemi Corporation Page 6 of 6
LCE6.5 – LCE170A
PACKAGE DIMENSIONS
NOTES:
1 Dimensions are in inches.
2 Millimeter equivalents are given for general information only.
3 The major diameter is essentially constant along its length.
4 In accordance with ASME Y14.5M, diameters are equivalent to Φx
symbology.
SCHEMAT IC APPLICATIO NS
The TVS low capacitance device configuration is shown in figure 2. As a further option for unidirectional applications, an additional
low capacitance rectifier diode may be used in parallel in the same polarity direction as the TVS as shown in figure 3. In
applications where random high voltage trans ients occur, this will prevent reverse transients from damaging the internal low
capacitance rectifier diode and also provide a low voltage c onducting direction. The added rectifier diode should be of similar low
capacitance and also have a higher reverse voltage rating than the TVS clam ping voltage VC. The Microsemi recommended
rectifier part number is the “ELCR80” for the application in figure 3. If using two (2) low capac itance TVS devices in anti-parallel for
bidirectional applications, this added protective feature for both directions (including the reverse of each rectifier diode) is also
provided. The unidirectional and bidirectional configurations in figure 3 and 4 wi ll both result in twice the capacitance of figure 2.
FIGURE 2 FIGURE 3 FIGURE 4
TVS with internal Low Optional Unidirectional Optional Bidirectional
Capacitanc e Dio de configuration (TVS and configuration (two TVS
separate rectifier diode devices in anti-parallel)
in parallel)
Dimensions
Symbol
Inches
Millimeters
Min
Max
Min
Max
BD
0.190
0.205
4.826
5.207
BL
0.360
0.375
9.146
9.527
LD
0.038
0.042
0.958
1.074
LL
1.10
1.625
27.9
41.28