SM20 Series - Surface Mount Varistor for High Energy Transient
Current Applications
20mm SMD Series is a surface-mount metal oxide varistor device, for
use in applications requiring hi-energy / transient current
capability.
The AC rated parts are designed to operate continuously across AC
power lines. The DC rated parts are suitable for Automotive
applications. The series comprises a Nylon molded package with
folded tin plated metal leads for soldering to board.
Features
• DC Voltage Rating 26 - 420VDC
• AC Voltage Rating 20Vac - 320AC
• No De-Rating up to 85°C ambient
• Lead-Free, HalogenFree and RoHS Compliant
• Low voltage devices specified for automotive load dump energy
• Available in "waffle" tray packaging
Device Ratings and Specifications
Part
Number | Branding | Maximum Rating (85°C) | Specifications (25°C) |
| Continuous | Transient | Varistor Voltage
at 1mA DC
Test Current | Maximum
Clamping
Voltage
8 x 20 µs | Typical
Capacitance
f = 1MHz |
| VRMS | VDC | Energy
10 x 1000µs | Peak Current
8 x 20µs |
| VM(AC) | VM(DC) | WTM
1x pulse | I
TM
1x pulse | VNOM Min | VNOM Max | VC | I
PK | C |
| (V) | (V) | (J) | (A) | (V) | (V) | (V) | (A) | (pF) |
| V26SM20 | 26SM20 | 20 | 26 | 20
160 (note 1) | 2000 | 32
(10mA) | 40
(10mA) | 63 | 20 | 12000 |
| V175SM20 | 175SM20 | 175 | 225 | 90 | 6500 | 247 | 303 | 455 | 100 | 1400 |
| V230SM20 | 230SM20 | 230 | 300 | 122 | 6500 | 324 | 396 | 595 | 100 | 1100 |
| V250SM20 | 250SM20 | 250 | 330 | 130 | 6500 | 354 | 429 | 650 | 100 | 1000 |
| V275SM20 | 275SM20 | 275 | 369 | 140 | 6500 | 389 | 473 | 710 | 100 | 900 |
| V300SM20 | 300SM20 | 300 | 405 | 165 | 6500 | 420 | 517 | 775 | 100 | 800 |
| V320SM20 | 320SM20 | 320 | 420 | 150 | 6500 | 462 | 540 | 810 | 100 | 750 |
1. Energy rating for impulse duration of 30ms minimum to one half
of peak current (automotive load dump).
Dimensions
FAQ
1.Are you a factory or trading company?
We are a factory founded in 2009 and have over 9 years’ OEM and
international trading experience
2.What’s your main product?
Our main products are fuse series, resistance series, capacitance
series, fuse pedestal series, sensor series
3.Any certification of your company or product?
We have ISO 9001-2008 ,CE(LVD), RoHS, TUV,cURus,VDE,CQC,PSE,KC
Certificates and Test Report for these certificate.
4.Which countries have your product been exported to ?
We have exported our product to over 20 countries , such as Russia
, India ,Thailand, Indonesia, Malaysia, Tunisia, Brazil ,Iran,
U.A.E ,Mexico, Colombia, Venezuela , Argentina etc.
5.Which international exhibition do you usually go to?
China Import and Export Fair (Canton Fair) ELEKTRO , Russia / FIEE
ELéTRICA ,Brazil.
6.Can I visit your factory?
We have over 5000 square meters of workspace and sincerely welcome
your business visit.
7.Do you accept OEM or ODM?
Of course.
8.How’ your production capacity? How long is the lead time ?
Monthly output 50,000 piece . It usually take us 20-30 days to
finish the goods.
9.What’s your main payment term?
T/T ,LC ,D/P.
10.Any quality guarantee or after-sales service?
If any quality complaint , we will give out solution within 5 days.
11.Can sample fee be returned back to me ?
Sample amount can be deducted from your bulk order payment when
order quantity is over 1000 pieces at the first time.
12.How many days it takes to finish the samples?
Usually 2-5 work days .
Please tell me:
What product specifications do you need? when you ask for a
quotation.I will give you the most competitive price per as your
requirements. And we have many types for you to choose.
P.S.:If you can't find any products to meet your requirements.
welcome to send us the details drawings so that we can provide us
our professional & best service to you.
