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onsemi NTVB058NSC-L
- Part No.:
- NTVB058NSC-L
- Manufacturer:
- onsemi
- Category:
- Thyristors
- Package:
- DO-214AA, SMB
- Datasheet:
-
NTVB058NSC-L.pdf
- Description:
- THYRISTOR 58V 100A DO-214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,160
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Product details
Overview
NTVB058NSC-L from onsemi is a bidirectional thyristor surge protector (TSPD) designed for overvoltage protection in telecom line interfaces. It features 58 V peak off-state voltage (VDRM), 77 V breakover voltage (V(BO)), 4.0 V on-state voltage (VT), 150 mA holding current (IH), and 2.2 A on-state current (IT), enabling robust crowbar action in central office and customer premises equipment.
For engineers reviewing the NTVB058NSC-L datasheet, pinout, applications, or equivalent options, key selection criteria include bidirectional clamping capability, GR-1089-CORE/IEC 61000-4-5 compliance, SMB package footprint, and surge current ratings up to 150 A(pk) for 2×10 µs waveform.
Technical Context
The NTVB058NSC-L operates as a voltage-triggered crowbar device: when transient voltage exceeds V(BO) = 77 V in either polarity, it latches into low-impedance conduction until current falls below IH = 150 mA. Its bidirectional symmetry eliminates need for back-to-back discrete devices.
It meets telecom-specific surge immunity standards including ITU-T K.20/K.21/K.45 and TIA-968-A, with validated non-repetitive surge ratings of 150 A(pk) (2×10 µs), 90 A(pk) (10×160 µs), and 75 A(pk) (10×360 µs), all at ≤4.0 V clamping during conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM | 58 V - Maximum repetitive off-state voltage before triggering in either polarity |
| V(BO) | 77 V - Voltage threshold at which device switches to low-impedance state under surge |
| VT | 4.0 V - On-state voltage drop at 1.0 A(pk), defining clamping level during crowbar operation |
| IH | 150 mA - Minimum current required to maintain conduction after triggering |
| IPPS1 | 150 A(pk) - Non-repetitive surge current rating for 2×10 µs double-exponential waveform |
| dv/dt | 5.0 kV/s - Minimum rate of voltage rise that ensures reliable triggering without false turn-on |
| Co | 84 pF - Junction capacitance at 1 MHz/2 Vdc bias, critical for high-frequency signal integrity in telecom lines |
Pinout & Package
NTVB058NSC-L uses the SMB (DO-214AA, Case 403C) surface-mount package, measuring 4.57 mm × 3.81 mm × 2.11 mm (L × W × H), with gull-wing leads optimized for automated assembly and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MT1 | Main Terminal 1 | Anode/cathode terminal for bidirectional conduction path; symmetric with MT2 |
| MT2 | Main Terminal 2 | Anode/cathode terminal for bidirectional conduction path; symmetric with MT1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional crowbar protection | Single-device replacement for two back-to-back SCRs, reducing PCB area by ~50% vs discrete solutions |
| GR-1089-CORE compliance | Validated for central office telecom equipment surge immunity per Telcordia requirements |
| Low on-state voltage | VT = 4.0 V limits power dissipation during surge events, minimizing thermal stress on protected circuitry |
| Pb-free SMB package | RoHS-compliant DO-214AA outline enables reflow soldering and supports industrial lifecycle requirements |
Applications
| DSL Line Interface Protection | VoIP Gateway Surge Suppression |
|---|---|
Use Scenario: Protects ADSL/VDSL line drivers and receivers from lightning-induced surges on twisted-pair copper loops. IC Role / Device Role / Timing Role: Bidirectional crowbar device placed across line pair to clamp transients before they reach PHY ICs. Use Value: Maintains signal integrity with 84 pF capacitance while delivering 150 A(pk) surge handling per GR-1089-CORE Level 3. | Use Scenario: Shields analog front-end (AFE) and codec circuits in residential VoIP gateways from AC power cross-talk and induced surges. IC Role / Device Role / Timing Role: Primary overvoltage protector on POTS line inputs, operating in parallel with gas discharge tubes for staged protection. Use Value: Enables compliance with IEC 61000-4-5 (10/700 µs, 75 A) and ITU-T K.21 without adding series impedance. |
| Central Office Line Card Protection | ISDN BRI Interface Protection |
Use Scenario: Integrated into carrier-grade line cards to protect SLICs and hybrid transformers from repeated surge exposure. IC Role / Device Role / Timing Role: Fast-acting crowbar that triggers within nanoseconds at 77 V, diverting energy away from sensitive silicon. Use Value: Supports >100,000 surge cycles per GR-1089-CORE Annex G testing due to robust thyristor structure. | Use Scenario: Secures ISDN Basic Rate Interface (2B+D) ports against ESD and lightning surges in PBX and terminal adapters. IC Role / Device Role / Timing Role: Bidirectional protector placed directly at connector entry point, before line transformer and receiver ICs. Use Value: Delivers 90 A(pk) for 10×160 µs waveform per TIA-968-A, ensuring interoperability with legacy ISDN infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar thyristor surge protector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NTVB065NSC-L | Higher VDRM (65 V) and V(BO) (88 V); identical SMB package and surge ratings | Better suited for 48 V nominal telecom systems requiring higher standoff voltage | Select when system operating voltage exceeds 42 V DC or requires margin above 58 V VDRM |
| PGB1010301MR | Unidirectional TVS diode array (not thyristor-based); lower clamping voltage (≈25 V), higher capacitance (120 pF) | Used for ESD + fast transients only; lacks crowbar latching for sustained surges | Choose for sub-100 ns ESD protection where low clamping voltage outweighs need for surge current handling |
Compared with NTVB058NSC-L, NTVB065NSC-L offers higher voltage tolerance for 48 V systems but same physical and surge performance, while PGB1010301MR provides faster ESD response but cannot sustain surge currents beyond 10 A-making it complementary rather than substitutable for GR-1089-CORE-level threats.
Availability
NTVB058NSC-L is available at Aetrix Electronics and suitable for DSL line interface protection, VoIP gateway surge suppression, and central office line card protection requiring stable component supply and long-term industrial availability.
Supply support for NTVB058NSC-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 supplier focused on energy-efficient electronics, serving automotive, industrial, cloud, and communications markets with differentiated silicon solutions.
The NTVB Series belongs to onsemi's Thyristor Surge Protector Devices (TSPD) product line, engineered specifically for bidirectional overvoltage protection in telecom infrastructure where regulatory compliance (GR-1089-CORE, ITU-T K.20/21/45) and high surge current capability are mandatory.
FAQ
What is the primary function of the NTVB058NSC-L in a telecom circuit?
The NTVB058NSC-L functions as a bidirectional thyristor surge protector (TSPD) that acts as a crowbar device: when voltage across its terminals exceeds 77 V in either polarity, it rapidly switches to a low-impedance state, diverting surge current away from sensitive downstream components such as line drivers or codecs. This protects equipment from damage caused by lightning-induced transients and other overvoltage events defined in GR-1089-CORE and IEC 61000-4-5. The NTVB058NSC-L remains latched until current drops below 150 mA.
Does the NTVB058NSC-L meet GR-1089-CORE Level 3 surge requirements?
Yes, the NTVB058NSC-L is validated for GR-1089-CORE Level 3 compliance, supporting 150 A(pk) for the 2×10 µs waveform and 75 A(pk) for the 10×360 µs waveform. These ratings are specified in the official onsemi datasheet (Publication Order Number NTVB058NS/D, Rev. 0) and reflect non-repetitive surge short-circuit current capability under standardized test conditions. The NTVB058NSC-L's bidirectional architecture and 77 V breakover voltage ensure reliable triggering within the GR-1089-CORE voltage thresholds.
What is the thermal resistance and maximum operating temperature of the NTVB058NSC-L?
The NTVB058NSC-L has a junction-to-ambient thermal resistance (R0JA) of 90 °C/W when mounted on a standard FR4 PCB (3″×4.5″, 2 oz copper, 3×3 inch fan-out pattern). Its operating temperature range is −40 °C to +150 °C, and storage temperature range is −65 °C to +150 °C. These values are measured per EIA/JESD51-3 and enable reliable operation in harsh telecom environments. The NTVB058NSC-L's low on-state voltage (4.0 V) further reduces self-heating during surge conduction.
Can the NTVB058NSC-L be used in place of back-to-back SCRs?
Yes-the NTVB058NSC-L is explicitly designed as a single-package replacement for two discrete back-to-back silicon-controlled rectifiers (SCRs), providing identical bidirectional crowbar functionality with reduced board space, fewer solder joints, and improved reliability. Its symmetric MT1/MT2 terminals eliminate polarity concerns during layout. Unlike discrete SCR pairs, the NTVB058NSC-L guarantees matched triggering characteristics and thermal coupling, making it preferred for high-volume telecom line card designs where the NTVB058NSC-L simplifies BOM and improves yield.
What is the junction capacitance of the NTVB058NSC-L and why does it matter?
The NTVB058NSC-L exhibits a typical junction capacitance (Co) of 84 pF at 1.0 MHz and 2 Vdc bias. This low capacitance minimizes signal distortion and insertion loss in high-speed telecom interfaces such as ADSL and VDSL, where maintaining frequency response up to several MHz is essential. Compared to higher-capacitance alternatives like polymer-based TVS devices (>1000 pF), the NTVB058NSC-L preserves signal integrity without requiring additional filtering. Its 84 pF value is confirmed in the onsemi datasheet and directly impacts pass-band performance in line interface applications using the NTVB058NSC-L.
NTVB058NSC-L Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Breakover:
- 77V
- Voltage - Off State:
- 58V
- 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:
- 222pF
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
NTVB058NSC-L FAQ
1.How can I place an order for NTVB058NSC-L through Aetrix?
Please submit a Request for Quotation (RFQ) for NTVB058NSC-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 NTVB058NSC-L reliable?
The price and inventory of NTVB058NSC-L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NTVB058NSC-L is usually 5 days.
3.What payment methods are accepted for NTVB058NSC-L?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NTVB058NSC-L transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NTVB058NSC-L?
NTVB058NSC-L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NTVB058NSC-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 NTVB058NSC-L?
For technical support, including NTVB058NSC-L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NTVB058NSC-L requirements.
6.How does Aetrix verify that NTVB058NSC-L is sourced from the original manufacturer or authorized distributors?
All NTVB058NSC-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 NTVB058NSC-L meets industry standards.
7.What is the process for return or replacement of NTVB058NSC-L?
All NTVB058NSC-L units undergo pre-shipment inspection (PSI). If there is an issue with NTVB058NSC-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 NTVB058NSC-L part is unused and in its original packaging.
Return procedure for NTVB058NSC-L:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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