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Diodes Incorporated TB0900M-13
- Part No.:
- TB0900M-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Thyristors
- Package:
- DO-214AA, SMB
- Datasheet:
-
TB0900M-13.pdf
- Description:
- THYRISTOR 75V 250A DO-214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
TB0900M-13 from Diodes Incorporated is a bi-directional surface-mount thyristor surge protective device (TSPD) designed for primary overvoltage protection in telecom and data line interfaces. It features a 75V stand-off voltage (VDRM), 98V breakover voltage (VBO), 50A peak pulse current (10/1000µs), 250A peak impulse current (8/20µs), and 140pF off-state capacitance - enabling robust GR-1089-CORE and IEC 61000-4-5 compliance in DSL, T1/E1, and PoE-powered edge equipment.
For engineers reviewing the TB0900M-13 datasheet, TB0900M-13 pinout, TB0900M-13 application, or TB0900M-13 equivalent, this device serves as a voltage-triggered crowbar protector with precise breakover threshold, low on-state voltage (3.5V @ 1A), and bi-directional symmetry - critical for protecting AC-coupled analog front-ends, subscriber line interface circuits (SLIC), and Ethernet PHY transceivers against lightning-induced surges.
Technical Context
This TSPD operates as a voltage-triggered, self-resetting crowbar device: it remains high-impedance below VDRM (75V), transitions rapidly to low-impedance conduction at VBO (98V ±15%), and clamps transient energy via controlled on-state voltage (≤3.5V). Its oxide-glass passivated junction ensures stable triggering across temperature (-40°C to +150°C).
Bi-directional symmetry enables protection of balanced lines without polarity constraints; thermal resistance (RJL = 20°C/W) supports sustained surge dissipation in SMB package; off-state capacitance (140pF @ 1MHz, 2VDC bias) minimizes signal distortion in broadband telecom paths up to 10 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM | 75 V - Maximum continuous working voltage before conduction; defines safe operating margin for 56V nominal telecom lines. |
| VBO | 98 V - Breakover voltage at 50 mA; triggers clamping before downstream ICs exceed absolute maximum ratings. |
| Ipp (10/1000µs) | 50 A - Peak surge current handling per GR-1089-CORE; sufficient for Level 3 lightning surge immunity. |
| VT @ IT=1A | ≤3.5 V - Low on-state voltage limits power dissipation during clamping and avoids thermal runaway. |
| CO @ 1MHz | 140 pF - Off-state capacitance measured at 2VDC bias; preserves signal integrity in ADSL2+ and VDSL2 lines. |
| IH | 150–800 mA - Holding current range; ensures reliable reset after surge clears, preventing latch-up in powered interfaces. |
| Tj Range | −40°C to +150°C - Junction temperature operating range; supports deployment in uncontrolled outdoor cabinets and industrial gateways. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bi-directional - no polarity marking required. Dimensions: 4.06–4.57 mm (L) × 3.30–3.94 mm (W) × 1.96–2.21 mm (H); UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (A/K) | Bi-directional main terminals | Interchangeable; symmetric structure allows placement without orientation check on PCB - reduces assembly error risk. |
| Case | Non-electrical mechanical reference | Plastic SMB body provides isolation; no thermal or electrical connection to leads - simplifies layout and grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Oxide-glass passivated junction | Enables stable VBO tolerance (±15%) and long-term reliability under repeated surge stress without parameter drift. |
| Bi-directional symmetry | Eliminates need for dual-device placement on differential pairs - cuts BOM count and PCB area in SLIC and RS-485 protection. |
| Low on-state voltage (≤3.5V) | Reduces clamping power dissipation during 250A 8/20µs events - prevents thermal failure in compact SMB footprint. |
| UL Recognized Component (File E156346) | Validates safety compliance for end-equipment certifications including UL497B and FCC Part 68 without additional system-level testing. |
Applications
| DSL Line Interface Protection | T1/E1 Primary Protection |
|---|---|
|
Use Scenario: Protecting ADSL2+ line drivers and receivers from induced lightning surges on twisted-pair copper loops. IC Role / Device Role / Timing Role: Voltage-triggered crowbar that shunts surge current before SLIC or codec ICs experience overvoltage. Use Value: 75V VDRM aligns with 56V nominal line voltage; 140pF CO avoids attenuation of upstream/downstream frequency bands (up to 30 MHz). |
Use Scenario: Primary surge suppression on T1/E1 trunk interfaces in central office line cards and remote terminal units. IC Role / Device Role / Timing Role: Fast-acting bi-directional clamp responding within nanoseconds to 10/1000µs surges per GR-1089-CORE. Use Value: 250A 8/20µs rating meets Telcordia Level 3 requirements; SMB package supports automated placement in high-density line card layouts. |
| PoE-Powered Device Port Protection | Industrial Ethernet PHY Protection |
|
Use Scenario: Safeguarding Power over Ethernet (IEEE 802.3af/at) ports against surge coupling from adjacent AC wiring or lightning. IC Role / Device Role / Timing Role: Standby-mode protector that remains non-conductive until VBO exceeded, then clamps to ≤3.5V during event. Use Value: Bi-directional operation protects both power and data pairs; UL recognition streamlines Class 3/4 PoE system certification. |
Use Scenario: Shielding 10/100/1000BASE-T PHY transceivers in factory automation controllers and PLCs from EFT and surge transients. IC Role / Device Role / Timing Role: First-line defense in Ethernet magnetics secondary side, placed before common-mode chokes and PHY ICs. Use Value: 140pF CO avoids skew between differential pairs; −40°C to +150°C Tj range ensures operation in sealed industrial enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TSPD surge protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ75CA | TVS diode array with 75V standoff, 300W peak power, but higher clamping voltage (121V) and no holding-current reset behavior. | Lacks self-resetting capability; requires external current limiting to avoid latch-up after surge. | Prefer TB0900M-13 where automatic recovery and low clamping voltage are mandatory for powered interfaces. |
| P6SMB75CA | Unidirectional TVS with 75V standoff; bidirectional version (P6SMB75CA) has same VBR but 10× higher CO (≈1000pF) and no defined holding current. | Higher capacitance degrades signal integrity above 1 MHz; unsuitable for DSL/VDSL or high-speed Ethernet. | Choose TB0900M-13 for broadband telecom and data-line applications requiring <200pF and guaranteed reset behavior. |
Compared with SMCJ75CA and P6SMB75CA, TB0900M-13 delivers lower clamping voltage, guaranteed self-reset via holding current, and optimized capacitance for high-frequency lines - making it uniquely suitable for powered, AC-coupled telecom interfaces where post-surge functionality must be preserved.
Availability
TB0900M-13 is available at Aetrix Electronics and suitable for DSL line interface protection, T1/E1 primary surge suppression, and PoE port hardening requiring stable component supply, consistent surge performance, and UL-recognized safety compliance.
Supply support for TB0900M-13 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 consumer markets.
TB0900M-13 belongs to the TBxxx0M series of bi-directional thyristor surge protectors - engineered specifically for primary-level overvoltage protection in telecom infrastructure, data communications, and powered interface applications demanding fast response and automatic recovery.
FAQ
What is the trigger mechanism of TB0900M-13?
TB0900M-13 uses a voltage-triggered thyristor structure: when reverse or forward voltage exceeds its breakover voltage (VBO = 98V), it switches from high-impedance to low-impedance state in nanoseconds. This crowbar action shunts surge current while maintaining ≤3.5V clamping voltage across its terminals until current falls below holding current (IH = 150–800 mA), enabling automatic reset.
Can TB0900M-13 be used in DC power rail protection?
No - TB0900M-13 is not rated for continuous DC blocking or power-rail clamping. Its design targets transient overvoltage on signal/data lines. Applying sustained DC voltage above VDRM (75V) risks unintended triggering and thermal failure. Use dedicated DC-rated TVS or polymeric PPTC devices for power rail protection.
How does temperature affect TB0900M-13's breakover voltage?
Breakover voltage increases with junction temperature at +0.1%/°C. At 125°C, VBO rises ~10% above its 25°C value (98V → ~108V). Designers must verify that elevated VBO still provides adequate margin above maximum steady-state line voltage under worst-case thermal conditions.
Is TB0900M-13 compatible with lead-free reflow soldering?
Yes - TB0900M-13 is qualified for lead-free reflow per J-STD-020A, with moisture sensitivity level (MSL) 1. Its SMB package withstands peak temperatures up to 260°C for 30 seconds. Standard Pb-free reflow profiles (e.g., IPC/JEDEC J-STD-020) apply without derating.
TB0900M-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Breakover:
- 98V
- Voltage - Off State:
- 75V
- Voltage - On State:
- 3.5 V
- Current - Peak Pulse (8/20µs):
- 250 A
- Current - Peak Pulse (10/1000µs):
- 50 A
- Current - Hold (Ih):
- 150 mA
- Number of Elements:
- 1
- Capacitance:
- 140pF
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
TB0900M-13 FAQ
1.How can I place an order for TB0900M-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for TB0900M-13 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 TB0900M-13 reliable?
The price and inventory of TB0900M-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB0900M-13 is usually 5 days.
3.What payment methods are accepted for TB0900M-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB0900M-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TB0900M-13?
TB0900M-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TB0900M-13 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 TB0900M-13?
For technical support, including TB0900M-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB0900M-13 requirements.
6.How does Aetrix verify that TB0900M-13 is sourced from the original manufacturer or authorized distributors?
All TB0900M-13 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 TB0900M-13 meets industry standards.
7.What is the process for return or replacement of TB0900M-13?
All TB0900M-13 units undergo pre-shipment inspection (PSI). If there is an issue with TB0900M-13, 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 TB0900M-13 part is unused and in its original packaging.
Return procedure for TB0900M-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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