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onsemi NTVB220NSC-L
- Part No.:
- NTVB220NSC-L
- Manufacturer:
- onsemi
- Category:
- Thyristors
- Package:
- DO-214AA, SMB
- Datasheet:
-
NTVB220NSC-L.pdf
- Description:
- THYRISTOR 220V 100A DO-214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,204
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Product details
Overview
NTVB220NSC-L from onsemi is a bidirectional thyristor surge protector (TSPD) designed for overvoltage clamping in telecom line interfaces. It features 220 V peak off-state voltage (VDRM), 300 V breakover voltage (V(BO)), 4.0 V on-state voltage (VT), 150 mA holding current (IH), and 800 A peak pulse surge current capability under 10×1000 µs waveform - deployed in central office, access network, and customer premises equipment protection circuits.
For engineers reviewing the NTVB220NSC-L datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional crowbar action, GR-1089-CORE/IEC 61000-4-5 compliance, SMB package thermal performance, and precise VDRM/V(BO) matching for telecom interface transient immunity design.
Technical Context
The NTVB220NSC-L operates as a voltage-triggered bidirectional crowbar device: it remains high-impedance below VDRM (220 V), switches to low-impedance conduction at V(BO) (300 V), and latches until current falls below IH (150 mA). Its dv/dt rating of 5.0 kV/s ensures robust immunity against false triggering from fast transients.
Designed for telecom primary-side surge protection, it supports dual-polarity surge suppression without external polarity management. The device meets ITU-T K.20/K.21/K.45, TIA-968-A, and EN 60950 requirements with validated 50 A (10×1000 µs) non-repetitive surge current handling per polarity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM | 220 V - maximum continuous off-state voltage before conduction begins in either direction |
| V(BO) | 300 V - symmetrical breakover voltage threshold initiating crowbar action on positive/negative surges |
| VT | 4.0 V - low on-state voltage during clamping, minimizing power dissipation during surge events |
| IH | 150 mA - minimum current required to maintain conduction after triggering; defines reset condition |
| IPPS7 | 50 A - non-repetitive peak surge current rating for 10×1000 µs waveform per polarity |
| dv/dt | 5.0 kV/s - critical rate of rise of off-state voltage; prevents spurious turn-on from fast transients |
| TJ Range | −40°C to +150°C - extended operating temperature range suitable for outdoor telecom enclosures |
Pinout & Package
NTVB220NSC-L uses the SMB (DO-214AA, Case 403C) surface-mount package with two terminals: MT1 and MT2. This bidirectional configuration requires no polarity assignment during PCB layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MT1 | Main Terminal 1 | One of two symmetrical anode/cathode terminals; interchangeable with MT2 in bidirectional operation |
| MT2 | Main Terminal 2 | Second symmetrical terminal; forms the surge current path between line and ground or differential pair |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional crowbar action | Enables single-device protection of AC-coupled or differential telecom lines without polarity awareness |
| GR-1089-CORE compliance | Validated for central office equipment surge immunity per Telcordia's most stringent telecom standard |
| SMB package thermal resistance | 90 °C/W junction-to-ambient (FR4, 3″×4.5″, 2 oz Cu) enables reliable power dissipation during repeated surges |
| Low capacitance (33 pF) | Minimizes signal distortion on high-speed telecom interfaces such as xDSL or POTS line cards |
| Lead-free (Pb-free) construction | Meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 reflow profile requirements |
Applications
| DSL Line Card Protection | VoIP Gateway Interface |
|---|---|
Use Scenario: Protects ADSL/VDSL line interface circuitry from lightning-induced surges on outside plant copper pairs. IC Role / Device Role / Timing Role: Bidirectional crowbar clamping device placed between tip/ring and ground, triggered only during overvoltage events. Use Value: Maintains <33 pF line capacitance to preserve high-frequency signal integrity while diverting up to 50 A (10×1000 µs) surge energy. |
Use Scenario: Shields analog telephony interface (FXS/FXO) in enterprise VoIP gateways from induced transients on PSTN lines. IC Role / Device Role / Timing Role: Primary-stage surge suppressor located upstream of isolation transformer and codec IC. Use Value: Provides symmetric 220 V standoff and 300 V breakover to prevent false triggering during normal ringing (105 V RMS). |
| Central Office DSLAM Shelf | Remote Terminal Cabinet |
Use Scenario: Integrated into multi-line DSLAM shelves for protection of 24–48 port line cards exposed to long-loop outdoor cabling. IC Role / Device Role / Timing Role: First-line transient voltage suppressor mounted directly at connector entry point. Use Value: Delivers GR-1089-CORE Level 3 compliance (50 A, 10×1000 µs) with minimal board space using SMB footprint. |
Use Scenario: Used in street-level remote terminals serving fiber-to-the-node (FTTN) deployments with legacy copper last-mile segments. IC Role / Device Role / Timing Role: Telecom-grade surge protector rated for −40°C to +150°C ambient operation in uncooled cabinets. Use Value: Ensures long-term reliability under repeated surge stress with 150 mA holding current enabling clean recovery post-event. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar thyristor surge protector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NTVB220NSA-L | Same electrical specs (VDRM=220 V, V(BO)=300 V), identical SMB package, but marked '22NA' and shipped in different tape/reel orientation | No functional difference; used interchangeably in same designs where marking or reel logistics differ | Select when sourcing alignment with legacy BOMs specifying 'A' suffix or specific reel packaging requirements |
| NTVB200Sx-L series (e.g., NTVB200SC-L) | Lower VDRM (200 V) and V(BO) (320 V); otherwise identical SMB package, VT=4.0 V, IH=150 mA, and surge ratings | Suitable where system nominal voltage is ≤170 V RMS (e.g., shorter loops or lower-voltage POTS systems) | Choose for cost-sensitive deployments with reduced surge margin requirements or tighter VDRM tolerance bands |
Compared with NTVB220NSC-L, NTVB220NSA-L offers identical protection performance with minor logistics differentiation, while NTVB200SC-L provides a 20 V lower standoff voltage - useful for applications where reduced breakover margin improves response speed without compromising safety standards.
Availability
NTVB220NSC-L is available at Aetrix Electronics and suitable for DSL line card protection, VoIP gateway interface hardening, and central office DSLAM shelf surge immunity requiring stable component supply across industrial telecom production cycles.
Supply support for NTVB220NSC-L includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
onsemi (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and telecom markets.
The NTVB Series was developed specifically for telecom infrastructure surge protection, targeting GR-1089-CORE and IEC 61000-4-5 compliance in central office, access node, and customer premises equipment.
FAQ
What is the primary function of the NTVB220NSC-L in a telecom circuit?
The NTVB220NSC-L functions as a bidirectional thyristor surge protector (TSPD) that acts as a crowbar device - remaining non-conductive below 220 V (VDRM), triggering at 300 V (V(BO)) to short surge current to ground, and latching until current drops below 150 mA (IH). It is used to protect DSL, POTS, and VoIP line interfaces from lightning and switching transients, and appears in schematics at the front-end of line interface circuits before isolation transformers or codecs.
Does the NTVB220NSC-L require a gate drive or control signal to operate?
No, the NTVB220NSC-L is a passive, voltage-triggered device with no gate terminal or control input. It relies solely on intrinsic thyristor physics: conduction initiates automatically when voltage across MT1–MT2 exceeds V(BO) (300 V) in either polarity, and sustains conduction until load current falls below IH (150 mA). This self-triggering behavior eliminates need for external biasing or timing circuitry.
How does the NTVB220NSC-L compare to TVS diodes for telecom surge protection?
Unlike unidirectional or bidirectional TVS diodes, the NTVB220NSC-L provides true crowbar clamping with lower clamping voltage under high-current surges (VT = 4.0 V vs. TVS clamping >15 V at 50 A). Its 150 mA holding current ensures sustained conduction until surge energy dissipates, whereas TVS devices return immediately to high impedance. This makes NTVB220NSC-L better suited for high-energy GR-1089-CORE Level 3 testing.
What is the meaning of the '-L' suffix in NTVB220NSC-L?
The '-L' suffix in NTVB220NSC-L denotes lead-free (Pb-free) construction per RoHS Directive 2011/65/EU. It indicates compliance with JEDEC J-STD-020 moisture sensitivity level (MSL) 1 and qualification for standard Pb-free reflow profiles. The marking '22NC' on the SMB package body corresponds to this part number variant and confirms Pb-free material content.
Can the NTVB220NSC-L be used in DC power line protection?
The NTVB220NSC-L is not recommended for DC power rail protection because its 150 mA holding current may prevent automatic reset if downstream load draws ≥150 mA continuously. In telecom line applications, current naturally drops below IH after surge decay due to series impedance (e.g., transformer leakage inductance or line resistance), enabling safe recovery. For DC rails, a GDT or resettable fuse is typically paired with the NTVB220NSC-L to ensure current interruption.
NTVB220NSC-L Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Breakover:
- 300V
- Voltage - Off State:
- 220V
- Voltage - On State:
- 4 V
- Current - Peak Pulse (8/20µs):
- -
- Current - Peak Pulse (10/1000µs):
- 100 A
- Current - Hold (Ih):
- 150 mA
- Number of Elements:
- 1
- Capacitance:
- 81pF
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
NTVB220NSC-L FAQ
1.How can I place an order for NTVB220NSC-L through Aetrix?
Please submit a Request for Quotation (RFQ) for NTVB220NSC-L on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for NTVB220NSC-L reliable?
The price and inventory of NTVB220NSC-L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NTVB220NSC-L is usually 5 days.
3.What payment methods are accepted for NTVB220NSC-L?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NTVB220NSC-L transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NTVB220NSC-L?
NTVB220NSC-L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NTVB220NSC-L order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for NTVB220NSC-L?
For technical support, including NTVB220NSC-L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NTVB220NSC-L requirements.
6.How does Aetrix verify that NTVB220NSC-L is sourced from the original manufacturer or authorized distributors?
All NTVB220NSC-L products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that NTVB220NSC-L meets industry standards.
7.What is the process for return or replacement of NTVB220NSC-L?
All NTVB220NSC-L units undergo pre-shipment inspection (PSI). If there is an issue with NTVB220NSC-L, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The NTVB220NSC-L part is unused and in its original packaging.
Return procedure for NTVB220NSC-L:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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