LC6.5 thru LC170A
1500 WATT LOW CAPACITANCE
TRANSIENT VOLTAGE SUPPRESSOR
S C O T T S D A L E D I V I S I O N
DESCRIPTION
APPEARANCE
This hermetically sealed Transient Voltage Suppressor (TVS) product family
includes a rectifier diode element in series and opposite direction 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-160D 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
DO-13
(DO-202AA)
in Figure 6.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
•
•
Unidirectional low-capacitance TVS series for flexible
•
•
Protection from switching transients and induced RF
thru-hole mounting (for bidirectional see Figure 4)
Protection for aircraft fast data rate lines per select
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
Hermetic sealed DO-13 metal package
Options for screening in accordance with MIL-PRF-
19500 for JAN, JANTX, JANTXV, and JANS are also
available by adding MQ, MX, MV, MSP prefixes
respectively to part numbers, e.g. MXLC6.5A, etc.
Surface mount equivalent packages also available as
SMCJLCE6.5 - SMCJLCE170A or SMCGLCE6.5 -
SMCGLCE170A in separate data sheet (consult
factory for other surface mount options)
level waveforms in RTCA/DO-160D & ARINC 429
•
•
ESD & EFT protection per IEC 61000-4-2 and -4-4
•
•
•
•
Secondary lightning protection per IEC61000-4-5 with
42 Ohms source impedance:
Class 1: LC6.5 to LC170A
Class 2: LC6.5 to LC150A
Class 3: LC6.5 to LC70A
Class 4: LC6.5 to LC36A
•
Secondary lightning protection per IEC61000-4-5 with
12 Ohms source impedance:
•
•
Class 1 : LC6.5 to LC90A
Class 2: LC6.5 to LC45 A
Class 3: LC6.5 to LC22A
Class 4: LC6.5 to LC11A
Plastic axial-leaded equivalents available in the
•
•
Secondary lightning protection per IEC61000-4-5 with
LCE6.5 - LCE170A series in separate data sheet
2 Ohms source impedance:
Class 2: LC6.5 to LC20A
Class 3: LC6.5 to LC10A
Inherently radiation hard per Microsemi MicroNote 050
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
• 1500 Watts at 10/1000 µs with repetition rate of 0.01% or
•
CASE: DO-13 (DO-202AA), welded, hermetically
less* at lead temperature (TL) 25oC (see Figs. 1, 2, & 4)
sealed metal and glass
• Operating & Storage Temperatures: -65o to +175oC
•
•
FINISH: All external metal surfaces are Tin-Lead
plated and solderable per MIL-STD-750 method 2026
• THERMAL RESISTANCE: 50oC/W (Typical) junction to
lead at 0.375 inches (10 mm) from body or 110 oC/W
junction to ambient when mounted on FR4 PC board
with 4 mm2 copper pads (1 oz) and track width 1 mm,
length 25 mm
POLARITY: Cathode connected to case as shown by
diode symbol (cathode positive for normal operation)
•
•
•
MARKING: Part number and polarity diode symbol
WEIGHT: 1.4 grams. (Approx)
• DC Power Dissipation*: 1 Watt at TL < +125oC 3/8” (10
TAPE & REEL option: Standard per EIA-296 (add
mm) from body (see derating in Fig 3 and note below)
“TR” suffix to part number)
• Solder Temperatures: 260 o C for 10 s (maximum)
•
See package dimension on last page
* TVS devices are not typically used for dc power dissipation and are instead operated < VWM (rated standoff voltage) except for transients that briefly
drive the device into avalanche breakdown (VBR to VC region) of the TVS element. Also see Figures 3 and 4 for further protection details in rated peak
pulse power for unidirectional and bidirectional configurations respectively.
Copyright 2002
Microsemi
Page 1
10-21-2004 REV C
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
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