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Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > Thyristors

Diodes Incorporated TB0720H-13-F

Name: TB0720H-13-F
Brand: Diodes Incorporated
SKU: TB0720H-13-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TB0720H-13-F

Manufacturer:: Diodes Incorporated

Category:: Thyristors

Package:: DO-214AA, SMB

Datasheet:: TB0720H-13-F.pdf

Description:: THYRISTOR 65V 400A DO-214AA

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Inventory:6,008

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Product details

Overview

TB0720H-13-F from Diodes Incorporated is a bidirectional surface-mount thyristor surge protective device (TSPD) designed for primary-level transient overvoltage protection in telecom and data line interfaces. It features a 65 V maximum repetitive off-state voltage (V_DRM), 100 A peak pulse current (10/1000 μs), 88 V breakover voltage (V_BO), 3.5 V on-state voltage at 1 A, and 200 pF off-state capacitance - enabling robust GR-1089-CORE and IEC 61000-4-5 compliance in DSL, T1/E1, and ISDN line cards.

For engineers reviewing the TB0720H-13-F datasheet, TB0720H-13-F pinout, TB0720H-13-F application, or TB0720H-13-F equivalent, key selection criteria include stand-off voltage margin vs. line operating voltage, peak pulse current rating under 10/1000 μs waveform, off-state capacitance impact on high-frequency signal integrity, and SMB package thermal performance in dense PCB layouts.

Technical Context

This bidirectional TSPD operates as a voltage-triggered crowbar device: it remains in high-impedance off-state until applied voltage exceeds its 88 V breakover threshold, then latches into low-voltage conduction (≤3.5 V at 1 A) to shunt surge energy. Its oxide-glass passivated junction ensures stable triggering across temperature (±0.1 %/°C V_BR drift) and long-term reliability under repetitive surges.

With no polarity indicator and symmetric bidirectional behavior, it protects AC-coupled lines without orientation constraints. The device sustains 50 A non-repetitive on-state current (8.3 ms half-sine) and recovers to high-impedance state within ≤30 ms after surge removal, provided holding current criterion (I_H > V_L/R_L) is met in the protected circuit.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DRM	65 V - Maximum continuous line voltage the device blocks without triggering; sets minimum operating margin above 48–56 V telecom line peaks.
I_PP (10/1000 μs)	100 A - Peak surge current capability per GR-1089-CORE Level 3; defines clamping robustness against lightning-induced transients.
V_BO	88 V - Breakover voltage at specified I_BO; determines precise trigger point for fast overvoltage response.
V_T @ I_T = 1 A	3.5 V - On-state voltage during conduction; directly impacts power dissipation (3.5 W at 1 A) and thermal design in SMB package.
C_O	200 pF - Off-state capacitance at 1 MHz/2 V bias; limits insertion loss and distortion in broadband data lines up to ~10 MHz.
R_θJA	100 °C/W - Junction-to-ambient thermal resistance; requires careful PCB copper area planning to maintain T_J ≤ 150 °C under sustained surge duty.

Pinout & Package

Package: SMB (DO-214AA), surface-mount, molded plastic case with UL 94V-0 flammability rating, 0.093 g weight, and matte tin lead finish. Moisture sensitivity level 1 per J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
Anode/Cathode (Bidirectional)	Surge current path terminal	No polarity marking; either terminal serves as anode or cathode depending on instantaneous voltage polarity - enables single-device AC line protection.
Case / Body	Thermal and mechanical interface	Exposed copper pad on underside provides primary heat path to PCB; requires ≥100 mm² 2-oz copper pour for R_θJA derating.

Key Features

Feature	Design Value
Bidirectional surge clamping	Enables single-component protection of AC-coupled telecom lines (e.g., POTS, xDSL) without external diode bridges or polarity awareness.
Oxide-glass passivated junction	Ensures stable V_BO and low leakage (<5 μA at 65 V) across -40°C to +150°C junction temperature range.
UL Recognized Component (File E156346)	Validates safety compliance for end-equipment certification under UL497B, eliminating need for additional system-level surge validation effort.
Green molding compound (halogen-free)	Meets IPC-4101D/82 and JEDEC J-STD-020 requirements for RoHS-compliant industrial and telecom applications.

Applications

DSL Line Card Protection

T1/E1 Interface Protection

Use Scenario: Protecting ADSL/VDSL line drivers and receivers from induced lightning surges on twisted-pair copper loops.

IC Role / Device Role: Primary crowbar-type surge protector placed before line transformer or integrated line driver IC.

Use Value: Clamps 100 A (10/1000 μs) transients while maintaining <200 pF capacitance to preserve signal integrity up to 30 MHz.

Use Scenario: Safeguarding T1/E1 framer and transceiver circuits in telecom central office and CPE equipment.

IC Role / Device Role: First-stage overvoltage clamp on balanced receive/transmit pairs compliant with ITU-T K.20/K.21.

Use Value: 88 V V_BO provides 20+ V margin above 63 V T1 peak line voltage, ensuring reliable non-triggering during normal operation.

ISDN BRI Protection

Security System Data Lines

Use Scenario: Transient suppression on 2B+D ISDN basic rate interfaces exposed to building-wide surge coupling.

IC Role / Device Role: Bidirectional TSPD mounted directly at RJ-45 connector entry point.

Use Value: Symmetric 65 V V_DRM and 88 V V_BO protect both B-channels and D-channel simultaneously with one component.

Use Scenario: Protecting RS-485 control bus in fire alarm or access control panels connected to field wiring.

IC Role / Device Role: Standoff-rated surge suppressor on differential data pair, upstream of transceiver IC.

Use Value: 100 °C/W R_θJA allows direct mounting on compact security controller PCBs with minimal thermal relief copper.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional thyristor surge protection applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMBJ64CA	Unidirectional TVS diode; 64 V standoff, 100 A (10/1000 μs), but lacks latching behavior and higher clamping voltage (~104 V).	Requires external bridge for AC lines; less effective for long-duration surges due to non-latching operation.	Select when lower clamping voltage tolerance is acceptable and circuit topology supports discrete bridge rectification.
P6SMB68CA	Unidirectional TVS; 68 V standoff, 100 A (10/1000 μs); clamps at ~110 V, no hold-on capability.	Higher dynamic impedance during surge leads to greater let-through voltage; unsuitable for sustained overvoltage events.	Choose only for cost-sensitive, low-energy transient environments where crowbar action is not required.

Compared with SMBJ64CA and P6SMB68CA, TB0720H-13-F delivers true latching crowbar action with sub-3.5 V on-state voltage, enabling superior energy diversion for long-tail surges - critical for telecom line survivability where standards mandate 10/1000 μs immunity.

Availability

TB0720H-13-F is available at Aetrix Electronics and suitable for DSL line card protection, T1/E1 interface hardening, and ISDN BRI surge suppression requiring stable component supply and full traceability.

Supply support for TB0720H-13-F 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability protection, power management, and signal integrity solutions for industrial, telecom, and computing markets.

TB0720H-13-F belongs to the TB0640H–TB3500H series of bidirectional TSPDs engineered specifically for primary-level surge immunity in telecom infrastructure and data communication equipment meeting GR-1089-CORE, IEC 61000-4-5, and ITU-T K.20/K.21 standards.

FAQ

What is the maximum continuous operating voltage for TB0720H-13-F?

The maximum repetitive off-state voltage (V_DRM) is 65 V DC or RMS. This is the highest steady-state voltage the device reliably blocks without triggering. Operation above this value risks unintended conduction; design margin should maintain line peaks at least 20% below 65 V, especially in temperature-varying environments where V_DRM drift is minimal (±0.1%/°C).

Does TB0720H-13-F require a gate trigger or external circuitry to operate?

No. TB0720H-13-F is a gateless, voltage-triggered thyristor. It switches automatically from high-impedance off-state to low-voltage on-state when applied voltage exceeds its 88 V breakover threshold (V_BO). No external bias, timing circuit, or control signal is needed - making it inherently simple and fail-safe for surge protection.

How does TB0720H-13-F reset after conducting a surge?

After triggering, the device remains latched in low-impedance state until current falls below its holding current (I_H = 150–800 mA). In typical telecom line applications, natural current decay through line impedance or series resistors ensures turn-off within ≤30 ms. Circuit design must guarantee I < I_H post-surge; otherwise, the device stays on and may overheat.

Can TB0720H-13-F be used in automotive applications?

No. TB0720H-13-F is not qualified to AEC-Q101 or automotive temperature/humidity/reliability standards. Its specified operating range (–40°C to +150°C) overlaps automotive ambient conditions, but its qualification scope is limited to telecom and industrial data line protection per GR-1089-CORE, IEC 61000-4-5, and UL497B - not automotive EMC or lifetime requirements.

TB0720H-13-F Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Package/Case:: DO-214AA, SMB

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Breakover:: 88V

Voltage - Off State:: 65V

Voltage - On State:: 3.5 V

Current - Peak Pulse (8/20µs):: 400 A

Current - Peak Pulse (10/1000µs):: 100 A

Current - Hold (Ih):: 150 mA

Number of Elements:: 1

Capacitance:: 200pF

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMB

TB0720H-13-F FAQ

1.How can I place an order for TB0720H-13-F through Aetrix?

Please submit a Request for Quotation (RFQ) for TB0720H-13-F 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 TB0720H-13-F reliable?

The price and inventory of TB0720H-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB0720H-13-F is usually 5 days.

3.What payment methods are accepted for TB0720H-13-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB0720H-13-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TB0720H-13-F?

TB0720H-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TB0720H-13-F 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 TB0720H-13-F?

For technical support, including TB0720H-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB0720H-13-F requirements.

6.How does Aetrix verify that TB0720H-13-F is sourced from the original manufacturer or authorized distributors?

All TB0720H-13-F 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 TB0720H-13-F meets industry standards.

7.What is the process for return or replacement of TB0720H-13-F?

All TB0720H-13-F units undergo pre-shipment inspection (PSI). If there is an issue with TB0720H-13-F, 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 TB0720H-13-F part is unused and in its original packaging.

Return procedure for TB0720H-13-F:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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