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Diodes Incorporated TB0720L-13-F
- Part No.:
- TB0720L-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Thyristors
- Package:
- DO-214AA, SMB
- Datasheet:
-
TB0720L-13-F.pdf
- Description:
- THYRISTOR 65V 150A DO-214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
TB0720L-13-F from Diodes Incorporated is a bidirectional surface-mount thyristor surge protective device (TSPD) rated for 30A peak pulse current (10/1000μs), 65V maximum repetitive off-state voltage (VDRM), and 88V breakover voltage (VBO). It provides low-clamping, high-impedance transient suppression in telecom line interfaces, DSL modems, and analog telephone circuits.
For engineers reviewing the TB0720L-13-F datasheet, TB0720L-13-F pinout, TB0720L-13-F application, or TB0720L-13-F equivalent, key selection criteria include stand-off voltage margin vs. system operating voltage, 150A 8/20μs surge capability per IEC 61000-4-5, bidirectional symmetry, and SMB package thermal performance under repeated surge stress.
Technical Context
This TSPD operates as a voltage-triggered crowbar device: it remains highly resistive below 65V, then switches to low-impedance conduction above 88V with typical breakover current of 50–800mA. Its oxide-glass passivated junction ensures stable VBO over temperature (±0.1%/°C drift).
Designed for telecom primary protection, it meets GR-1089-CORE, ITU-T K.20/K.21, and UL497B requirements. The bidirectional structure eliminates polarity concerns in AC-coupled lines, and its 100pF off-state capacitance minimizes signal distortion in voice-band applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM | 65 V - Maximum continuous working voltage before leakage exceeds 5 µA; sets safe operating margin above 48V nominal telecom line voltage. |
| VBO | 88 V - Voltage at which device triggers into conduction; defines clamping threshold during surge events. |
| IPP (10/1000µs) | 30 A - Peak surge current handling per GR-1089-CORE; determines survivability against lightning-induced surges on outside plant lines. |
| IPP (8/20µs) | 150 A - Higher-energy surge rating per IEC 61000-4-5; supports robust front-end protection in industrial telecom gateways. |
| CO | 100 pF - Off-state capacitance at 1 MHz / 2 VDC bias; preserves signal integrity in POTS and ADSL2+ up to 2.2 MHz. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance in standard SMB layout; informs derating for sustained surge duty cycles. |
| TJ Range | −40 to +150 °C - Operational junction temperature range; enables deployment in uncontrolled outdoor enclosures and central office environments. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount plastic case with UL 94V-0 flammability rating, 0.093 g mass, and matte tin-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Bidirectional) | Surge current path | No polarity marking; either terminal serves as anode or cathode depending on instantaneous voltage polarity - enables single-device protection of AC-coupled telecom lines. |
| Case | Thermal and mechanical interface | Molded plastic body with defined thermal resistance (RθJL = 30°C/W); requires PCB copper pour for effective heat dissipation during repeated surges. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional protection | Single SMB device replaces dual unidirectional TVS diodes in AC line interfaces, reducing BOM count and PCB area by ~40%. |
| Oxide-glass passivated junction | Ensures <±5% VBO tolerance across production lots and stable triggering behavior after 1000+ surge events. |
| UL Recognized Component | File E156346 confirms compliance with UL497B for telecom primary protection - eliminates need for additional safety certification testing. |
| Lead-free & halogen-free | Meets RoHS Directive 2002/95/EC and JEDEC J-STD-020 moisture sensitivity Level 1 - supports automated reflow without popcorn cracking. |
Applications
| DSL Line Interface Protection | Analog Telephone Line (POTS) |
|---|---|
Use Scenario: Protecting ADSL2+ transceivers from induced surges on outside plant copper pairs. IC Role / Device Role / Timing Role: Primary crowbar protector placed between line transformer secondary and codec input. Use Value: 100pF capacitance avoids attenuation in 2.2 MHz band; 65V VDRM allows 20% margin above 56V ring voltage. | Use Scenario: Safeguarding subscriber line interface circuits (SLIC) in VoIP gateways against lightning transients. IC Role / Device Role / Timing Role: First-stage surge clamp on tip/ring lines before hybrid transformer and DC feed circuitry. Use Value: Bidirectional symmetry prevents polarity-dependent failure; 150A 8/20µs rating covers worst-case ITU-T K.21 surges. |
| ISDN BRI Line Protection | Central Office Line Card |
Use Scenario: Transient suppression on 2B+D ISDN interfaces exposed to long-loop wiring. IC Role / Device Role / Timing Role: Standoff-mode protector located upstream of line driver ICs and isolation transformers. Use Value: 88V VBO ensures reliable triggering above 75V DC loop voltage while avoiding false trips during normal operation. | Use Scenario: Front-end protection on multi-line carrier-grade line cards handling 24–48 VDC feeding. IC Role / Device Role / Timing Role: High-reliability surge suppressor mounted directly at connector entry point. Use Value: UL497B recognition and −40°C to +150°C TJ range support deployment in temperature-uncontrolled central office cabinets. |
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 |
|---|---|---|---|
| SM15T6.5A (Littelfuse) | Unidirectional, 6.5V VBR, 1500W peak power, DO-214AB package | Requires dual-device configuration for AC lines; lower voltage rating suits low-voltage data ports only. | Select only for sub-12V DC systems where polarity is controlled and low clamping voltage is critical. |
| P6SMB6.8CA (ON Semiconductor) | 6.8V bidirectional TVS, 600W, SMB package, 100pF CO | Limited to 6.8V VRM; cannot withstand telecom line voltages - suitable only for secondary-side protection. | Use exclusively for post-regulator or IC-level protection where VCC ≤ 5V and surge energy is low. |
Compared with SM15T6.5A and P6SMB6.8CA, TB0720L-13-F uniquely supports primary-line telecom protection with 65V standoff, bidirectional symmetry, and certified UL497B compliance - making it irreplaceable in DSL, POTS, and ISDN front-end designs.
Availability
TB0720L-13-F is available at Aetrix Electronics and suitable for DSL line interface protection, analog telephone line (POTS) safeguarding, and ISDN BRI surge suppression requiring stable component supply across high-volume telecom equipment manufacturing.
Supply support for TB0720L-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
TB0720L-13-F belongs to Diodes' TB-series bidirectional TSPDs, engineered specifically for primary-level surge immunity in telecom infrastructure - balancing high surge current capacity, precise voltage thresholds, and long-term reliability under repeated transient stress.
FAQ
What is the maximum continuous operating voltage for TB0720L-13-F?
The maximum repetitive off-state voltage (VDRM) is 65 V. This is the highest DC or RMS AC voltage the device can block continuously without exceeding 5 µA leakage current. It must be selected with ≥20% margin above the system's maximum steady-state line voltage - e.g., suitable for 48–56 V telecom systems but not for 110 VAC mains.
Does TB0720L-13-F require a series current-limiting resistor?
No external series resistor is required for basic crowbar operation, as the device self-limits current via its negative resistance characteristic once triggered. However, a current-limiting resistor may be added downstream to control hold current (IH) and ensure reliable reset after surge clearance - especially when driving low-impedance loads.
How does TB0720L-13-F compare to standard TVS diodes in telecom protection?
TB0720L-13-F offers higher surge current handling (30A @ 10/1000µs vs. typical 10–20A for SMB TVS), lower clamping ratio (VBO/VDRM ≈ 1.35 vs. >1.6 for TVS), and inherent bidirectionality without pairing. Unlike TVS diodes, it latches on until current falls below holding current (IH), providing more robust crowbar action for high-energy surges.
Can TB0720L-13-F be used in automotive applications?
No - TB0720L-13-F is not qualified to AEC-Q101 or automotive temperature/humidity standards. Its design targets telecom GR-1089-CORE and ITU-T K.20/K.21 compliance, and its 150°C max junction temperature is insufficient for under-hood environments. Automotive surge protection requires AEC-Q200-qualified components with extended temperature validation.
TB0720L-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):
- 150 A
- Current - Peak Pulse (10/1000µs):
- 30 A
- Current - Hold (Ih):
- 150 mA
- Number of Elements:
- 1
- Capacitance:
- 100pF
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
TB0720L-13-F FAQ
1.How can I place an order for TB0720L-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for TB0720L-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 TB0720L-13-F reliable?
The price and inventory of TB0720L-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 TB0720L-13-F is usually 5 days.
3.What payment methods are accepted for TB0720L-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB0720L-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TB0720L-13-F?
TB0720L-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TB0720L-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 TB0720L-13-F?
For technical support, including TB0720L-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB0720L-13-F requirements.
6.How does Aetrix verify that TB0720L-13-F is sourced from the original manufacturer or authorized distributors?
All TB0720L-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 TB0720L-13-F meets industry standards.
7.What is the process for return or replacement of TB0720L-13-F?
All TB0720L-13-F units undergo pre-shipment inspection (PSI). If there is an issue with TB0720L-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 TB0720L-13-F part is unused and in its original packaging.
Return procedure for TB0720L-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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