• 3- Pole Plasma Gas Protector High Precision Transient Voltage Response
3- Pole Plasma Gas Protector High Precision Transient Voltage Response

3- Pole Plasma Gas Protector High Precision Transient Voltage Response

Product Details:

Place of Origin: CHINA
Brand Name: Julun
Certification: CE/UL/VDE/KC/ROHS
Model Number: SL1021A

Payment & Shipping Terms:

Minimum Order Quantity: 100 / Negotiable
Price: Negotiable
Packaging Details: Standard carton
Delivery Time: 7~10 Working days
Payment Terms: L/C, D/P, T/T,
Supply Ability: 10000/Piece/Weekly
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Detail Information

Type: SL1021A Low Off-state Capacitance: 1.5pF
Rated Impact Times: 10 (±5 Repetitions) Certification Standards: RoHS / UL
High Light:

gdt gas discharge tube


gas tube arrester

Product Description

SL1021A Series - High Precision Transient Voltage Response 3-Pole Plasma Gas Protector


GDT circuit protection devices dissipate electrical surge energy safely within a contained plasma gas. Commonly used to help protect sensitive telecom and networking equipment and lines, GDTs protect from damage that may result from lightning strikes and equipment switching operations.



SL1021A/B series GDTs are designed to offer high levels of performance on fast rising transients in the range of 100V/μS to 1KV/μS, which are those most likely created by induced lightning disturbances. These devices feature ultra low capacitance (typically 1.5pF or less) and are extremely robust with SL1021A devices able to divert a 10,000 Amp pulse without destruction, and SL1021B suffix devices able to divert a 20,000 Amp pulse without destruction. These series offer optimized internal geometry which provide low insertion loss at high frequencies, ideal for the protection of broadband and other high speed transmission equipment.




• RoHS compliant

• Low insertion loss

• Excellent response to fast rising transients

• Ultra low capacitance

• 10KA (A suffix devices) / 20KA (B suffix devices) surge capability tested with 8/20μs pulse as defined by IEC 61000-4-5

• Available with thermal failsafe option (add ‘F’ suffix to part number)




• Broadband equipment

• ADSL equipment

• XDSL equipment

• Satellite and CATV equipment

• Splitters

• General telecom equipment

• Telecom network interfaces

• Telephone line cards

• Repeaters

• Modems

• Line test equipment



Electrical Specifications


Device Specifications (at 25°C) Life Ratings
Part Number DC Voltage 100V/Sec. Voltage
100 V/

Max Single
Surge Life
SL1021B075 60 75 90 500 650 <1.5pF >1010 Ω (at 50V) 10Amps 10kA2
4kA2 5kA3 200Amps
SL1021A090 SL1021B090 72 90 108
SL1021A145 SL1021B145 116 145 174 600 >1010 Ω
(at 100V)
SL1021A150 SL1021B150 120 150 180
SL1021A200 150 200 250
SL1021A230 SL1021B230 184 230 276 450 650
SL1021A250 SL1021B250 200 250 300 500
SL1021A260 SL1021B260 210 260 310 550 700
SL1021A300 SL1021B300 240 300 360 650 850
SL1021A350 SL1021B350 280 350 420 700 900
SL1021A400 SL1021B400 320 400 480 850 950
SL1021A420 SL1021B420 345 420 500
SL1021A450 SL1021B450 360 450 540 900 1000
SL1021A500 SL1021B500 400 500 600 950 1100
SL1021A600 480 600 720 1000 1200


1. Total current through centre electrode, tested in accordance with ITU-T Rec K.12

2. SL1021A series 3. SL1021B series


Dimension unit


3- Pole Plasma Gas Protector High Precision Transient Voltage Response 03- Pole Plasma Gas Protector High Precision Transient Voltage Response 1




1. What is your MOQ?
A: We provide you small MOQ for each item, it depends your specific order.
2. What is your delivery date?
A: The delivery date is about 2-7days after receipt of payment.
3. What is your payment terms?
A: We accept T/T, western union, ,70% deposit in advance and 30% balance before shipment.
4. Can you send free samples?
A: Yes, free samples are available; you just need to pay the express fee. You can provide your a/c like DHL, or you can call your courier to pick up from our office.
5. How do you carry out quality control?
A: Quality is our priority. Our QC always attach great importance to quality control from the very beginning to the end.
6. Can you accept OEM orders?
A: Yes, we accept OEM & ODM orders, welcome all types of customized orders and cooperation.

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