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LC170A Datasheet(PDF) 1 Page - Microsemi Corporation |
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LC170A Datasheet(HTML) 1 Page - Microsemi Corporation |
1 / 4 page 1500 WATT LOW CAPACITANCE TRANSIENT VOLTAGE SUPPRESSOR SCOTTSD A L E DIVISION LC6.5 thru LC170A 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 in Figure 6. DO-13 (DO-202AA) IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com FEATURES APPLICATIONS / BENEFITS • Unidirectional low-capacitance TVS series for flexible thru-hole mounting (for bidirectional see Figure 4) • 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) • Plastic axial-leaded equivalents available in the LCE6.5 - LCE170A series in separate data sheet • Protection from switching transients and induced RF • Protection for aircraft fast data rate lines per select 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 • Secondary lightning protection per IEC61000-4-5 with 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 less* at lead temperature (TL) 25 oC (see Figs. 1, 2, & 4) • Operating & Storage Temperatures: -65o to +175oC • 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 mm 2 copper pads (1 oz) and track width 1 mm, length 25 mm • DC Power Dissipation *: 1 Watt at TL < +125oC 3/8” (10 mm) from body (see derating in Fig 3 and note below) • Solder Temperatures: 260 o C for 10 s (maximum) • CASE: DO-13 (DO-202AA), welded, hermetically sealed metal and glass • FINISH: All external metal surfaces are Tin-Lead plated and solderable per MIL-STD-750 method 2026 • 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) • TAPE & REEL option: Standard per EIA-296 (add “TR” suffix to part number) • 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. Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 1 Copyright 2002 10-21-2004 REV C |
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