Semiconductor January 1998
LA Series
Radial Lead Metal-Oxide Varistors for Line Voltage Operation
Features
•Recognized as “Transient Voltage Surge Suppressors”, UL File #E75961 to Standard 1449
•Recognized as “Across-The-Line Components”, UL File #E56529 to Standard 1414
•Recognized as “Protectors for Data Communication and Fire Alarm Circuits”, UL File #E135010 to Standard 497B
•CECC Certified (42201-006)
•Recognized as “Transient Voltage Surge Suppressors”, CSA File #LR91788 to Standard C22.2 No. 1 - M1981•High Energy Absorption Capability W TM. .Up to 360J •Wide Operating Voltage Range V M(AC)RMS. . . .130V to 1000V
•No Derating Up to 85o C Ambient
•Available in Tape and Reel or Bulk Pack Description
The LA Series of transient voltage surge suppressors are radial-lead varistors (MOVs) that are designed to be oper-ated continuously across AC power lines. These UL recog-nized varistors require very little mounting space, and are offered in various standard lead form options.
The LA Series varistors are available in four model sizes: 7mm, 10mm, 14mm and 20mm; and have a V M(AC)RMS voltage range from 130V to 1000V, and an energy absorp-tion capability up to 360J. Some LA series model numbers are available with clamping voltage selections, designated by a model number suffix of either A or B. The “A” selection is the standard model; the “B” selection provides a lower clamping voltage.
See LA Series Device Ratings and Specifications table for part number and brand information.
Packaging
14mm, 20mm
7mm, 10mm
Copyright © Harris Corporation 1998File Number2190.5
Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart
LA SERIES UNITS Continuous:
Steady State Applied Voltage:
AC Voltage Range (V M(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DC Voltage Range (V M(DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .130 to 1000
175 to 1200
V
V
Transients:
Peak Pulse Current (I TM)
中央经线For 8/20µs Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Single Pulse Energy Range
For 10/1000µs Current Wave (W TM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1200 to 6500
11 to 360
A
J
Operating Ambient Temperature Range (T A). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-55 to 85o C Storage Temperature Range (T STG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-55 to 125o C Temperature Coefficient (αV) of Clamping Voltage (V C) at Specified T est Current . . . . . . . . . . . . . .<0.01%/o C
Hi-Pot Encapsulation (Isolation Voltage Capability) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)
2500V Insulation Resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1000MΩ
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Device Ratings and Specifications
调节杆Series LA Varistors are listed under UL file #E75961 and E56529 as a recognized component.
Series LA Varistors are listed under CSA file #LR91788 as a recognized component.
PART NUMBER
MODEL
SIZE
DISC
DIA. (mm)
DEVICE
MODEL
NUMBER
BRAND-
ING
MAXIMUM RATING (85o C)SPECIFICATIONS (25o C)
歌剧的
魔咒CONTINUOUS TRANSIENT
VARISTOR
VOLTAGE AT
1mA DC TEST
CURRENT
MAXIMUM
CLAMPING
VOLTAGE
8 x 20µs
TYPICAL
CAPACI-
TANCE
f = 1MHz
V RMS V DC
ENERGY
10 x
1000µs
PEAK
CURRENT
8 x 20µs
V M(AC)V M(DC)W TM I TM
V NOM
MIN
V NOM
MAX V C I PK C
(V)(V)(J)(A)(V)(V)(A)(pF)
V130LA17130113017511120018425539010180 V130LA27130213017511120018422834010180 V130LA510130513017520250018422834025450 V130LA10A14130L10130175384500184228340501000 V130LA20A20130L201301757065001842283401001900 V130LA20B20130L20B1301757065001842203251001900 V140LA27140214018012120019824236010160 V140LA510140514018022250019824236025400 V140LA10A14140L1014018042450019824236050900 V140LA20A20140L201401807565001982423401001750 V150LA17150115020013120021228443010150 V150LA27150215020013120021226839510150 V150LA510150515020025250021226839525360 V150LA10A14150L1015020045450021226839550800 V150LA20A20150L201502008065002122683951001600 V150LA20B20150L20B1502008065002122433601001600
V175LA27175217522515120024730345510130V175LA510175517522530250024730345525350V175LA10A 14175L1017522555450024730345550700V175LA20A 20175L201752259065002473034551001400
V230LA47230423030020120032439659510100V230LA1010230L 23030035250032439659525250V230LA20A 14230L2023030070450032439659550550V230LA40A 20230L4023030012265003243965951001100V250LA2725022503302112003544737301090V250LA4725042503302112003544296501090V250LA1010250L 25033040250035442965025220V250LA20A 14250L2025033072450035442965050500V250LA40A 20250L4025033013065003544296501001000V250LA40B 20250L40B 25033013065003544136201001000V275LA2727522753692312003895157751080V275LA4727542753692312003894737101080V275LA1010275L 27536945250038947371025200V275LA20A 14275L2027536975450038947371050450V275LA40A 20275L402753691406500389473710100900V275LA40B 20275L40B 2753691406500389453680100900V300LA2730023004052512004205658701070V300LA4730043004052512004205177751070V300LA1010300L 30040546250042051777525180V300LA20A 14300L2030040577450042051777550400V300LA40A 20300L403004051656500420517775100800V320LA7732073204202512004625658501065V320LA1010320L 32042048250046256585025170V320LA20A 14320L2032042080450046256585050380V320LA40B
20
320L40
320
420
150
6500
462
540810
100
750
Series LA Varistors are listed under CSA file #LR91788 as a recognized component.
PART NUMBER MODEL SIZE DISC DIA. (mm)
DEVICE MODEL NUMBER BRAND-ING MAXIMUM RATING (85o C)
SPECIFICATIONS (25o C)
CONTINUOUS
TRANSIENT VARISTOR VOLTAGE AT 1mA DC TEST CURRENT MAXIMUM CLAMPING VOLTAGE 8 x 20µs TYPICAL CAPACI-TANCE f = 1MHz
V RMS V DC ENERGY 10 x 1000µs PEAK CURRENT 8 x 20µs
V M(AC)V M(DC)W TM I TM V NOM MIN
2-溴芴
V NOM MAX
V C I PK C (V)(V)(J)(A)(V)
(V)(A)(pF)
V385LA77385738550527120055868210251060V385LA1010385L 385505512500558682102525160V385LA20A 14385L20385505854500558682102550360V385LA40B 20385L4038550516065005586821025100700V420LA77420742056030120061074811201055V420LA1010420L 420560552500610748112025140V420LA20A 14420L20420560904500610748112050300V420LA4
0B 20420L4042056016065006107201060100600V460LA77460746061537120070285811301055V480LA774807480640351200670825124010270V480LA1010480L 480640602500670825124025120V480LA40A 14480L404806401054500670825124050270V480LA80B 20480L8048064018065006707901160100550V510LA1010510L 510675632500735910135025100V510LA40A 14510L405106751104500735910135050250V510LA80B 20510L8051067519065007358601280100500V575LA1010575L 575730652500805100015002590V575LA40A 14575L4057573012045008051000150050220V575LA80B 20575L8057573022065008059601410100450V625LA1010625L 625825672500940121018202580V625LA40A 14625L4062582512545009401210182050210V625LA80B 20625L80625825230650094011001650100425V660LA1010660L 660850702500940121018205070V660LA50A 14660L5066085014045009401210182050200V660LA100B 20660L100660850250650094011001650100400V1000LA80A 141000L8010001200220450014251800270050130V1000LA160B
20
1000L160
1000
沙河市第二高级中学1200
360
6500
1425
16002420
100
250
NOTE:Average power dissipation of transients not to exceed 0.25W, 0.4W, 0.6W or 1W for model sizes 7mm, 10mm, 14mm and 20mm,respectively.
Series LA Varistors are listed under CSA file #LR91788 as a recognized component.
PART NUMBER MODEL SIZE DISC DIA. (mm)
DEVICE MODEL NUMBER BRAND-ING MAXIMUM RATING (85o C)
SPECIFICATIONS (25o C)
CONTINUOUS
TRANSIENT VARISTOR VOLTAGE AT 1mA DC TEST CURRENT MAXIMUM CLAMPING VOLTAGE 8 x 20µs TYPICAL CAPACI-TANCE f = 1MHz
V RMS V DC ENERGY 10 x 1000µs PEAK CURRENT 8 x 20µs
V M(AC)V M(DC)W TM I TM V NOM MIN
V NOM MAX
V C I PK C (V)(V)(J)(A)(V)
(V)(A)(pF)
Power Dissipation Ratings
Continuous power dissipation capability is not an applicable parameter for a varistor. When transients occur in rapid succession, the average power dissipation is the energy (watt-seconds) per pulse times the number of pulses per second. The power so developed must be within the specifications shown on the Device Ratings and Specifications table for the specific device. The operating values of a MOV need to be derated at high temperatures as shown in Figure 1. Because varistors only dissipate a relatively small amount of average power they are not suitable for repetitive applications that involve substantial amounts of average power dissipation.
1.
1009080706050403020100-55
50
60
708090100110120130
140150
AMBIENT TEMPERATURE (o C)
P E R C E N T O F R A T E D V A L U E
FIGURE 1.CURRENT, ENERGY AND POWER DERATING
CURVE
FIGURE 2.PEAK PULSE CURRENT TEST WAVEFORM
10090
50
10O 1
T T 1
T 2
TIME
五常论坛
P E R C E N T O F P E A K V A L U E
O 1 = Virtual Origin of Wave
T = Time From 10% to 90% of Peak T 1 = Virtual Front time = 1.25•t
T 2 = Virtual Time to Half Value (Impulse Duration)Example:For an 8/20µs Current Waveform:8µs = T 1 = Virtual Front Time
20µs = T 2 = Virtual Time to Half Value
豫公网安备41160202000603
站长QQ:729038198
关于我们
投诉建议