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

Diodes Incorporated TB0900H-13

Name: TB0900H-13
Brand: Diodes Incorporated
SKU: TB0900H-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TB0900H-13

Manufacturer:: Diodes Incorporated

Category:: Thyristors

Package:: DO-214AA, SMB

Datasheet:: TB0900H-13.pdf

Description:: THYRISTOR 75V 400A DO-214AA

Quantity:: RFQ Add To RFQ list

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Inventory:9,769

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Product details

Overview

TB0900H-13 from Diodes Incorporated is a bidirectional surface-mount thyristor surge protective device (TSPD) designed for telecom and data line transient suppression. It features a 75V maximum repetitive off-state voltage (V_DRM), 100A peak pulse current (10/1000μs), 98V breakover voltage (V_BO), 3.5V on-state voltage at 1A, and 200pF off-state capacitance - enabling robust GR-1089-CORE and IEC 61000-4-5 compliance in DSL, T1/E1, and xDSL line interface protection.

For engineers reviewing the TB0900H-13 datasheet, TB0900H-13 pinout, TB0900H-13 application, or TB0900H-13 equivalent, key selection criteria include stand-off voltage margin vs. line operating voltage, bidirectional clamping symmetry, surge current derating at elevated ambient temperature, and low off-state capacitance for high-frequency signal integrity in broadband access equipment.

Technical Context

This TSPD operates as a voltage-triggered, self-resetting crowbar device with symmetrical bidirectional conduction. Its oxide-glass passivated junction ensures stable breakover voltage (±5% tolerance) and low leakage (<5μA at 75V), while the positive temperature coefficient of V_BO (0.1%/°C) supports thermal stability during repeated surges.

The device latches into low-impedance conduction upon exceeding V_BO, maintains conduction until current falls below 150–800mA holding current (I_H), and recovers to high-impedance state within ≤30ms. Its SMB package enables surface-mount integration with minimal PCB footprint and thermal resistance of 100°C/W (junction-to-ambient).

Key Specifications

Parameter	Value and Actual Design Meaning
V_DRM	75V - Maximum continuous AC/DC line voltage the device blocks without triggering; sets minimum isolation margin for 56V nominal DSL lines.
I_PP (10/1000μs)	100A - Peak surge current handling per GR-1089-CORE; defines single-event robustness against lightning-induced transients.
V_BO	98V - Breakover voltage threshold; triggers clamping before downstream ICs (e.g., line drivers) exceed absolute maximum ratings.
V_T @ 1A	3.5V - On-state voltage drop during conduction; determines power dissipation (3.5W peak) and thermal stress during surge events.
C_O	200pF - Off-state capacitance at 2V DC bias and 1MHz; limits insertion loss and signal distortion on broadband xDSL interfaces up to 30MHz.
I_H	150–800mA - Holding current range; ensures reliable reset after surge when line current drops below this threshold (e.g., during idle periods).
R_θJA	100°C/W - Junction-to-ambient thermal resistance; requires adequate copper pour or thermal vias to sustain repeated surges at +85°C ambient.

Pinout & Package

Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking required. Molded plastic case meets UL 94V-0 flammability rating; terminals feature matte tin plating for RoHS-compliant soldering.

Pin/Terminal	Circuit Role	Design Meaning
Anode/Cathode (symmetrical)	Surge current path	Identical terminals enable bidirectional clamping; either terminal serves as anode or cathode depending on transient polarity.
Case	Thermal and mechanical interface	Exposed copper pad on underside provides primary heat dissipation path; must be connected to ≥1cm² internal ground plane.

Key Features

Feature	Design Value
Bidirectional clamping	Enables single-device protection of AC-coupled telecom lines (e.g., POTS, ISDN) without polarity concerns or external diode bridges.
Oxide-glass passivated junction	Ensures <5μA leakage at 75V and stable V_BO over -40°C to +125°C junction temperature range.
UL Recognized Component	File E156346 certification confirms compliance with UL497B for telecom primary protector applications.
Green molding compound	Halogen-free and antimony-free encapsulation meets IPC-4101D/126 requirements for environmentally sensitive deployments.

Applications

DSL Line Interface Protection

T1/E1 Data Line Protection

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

IC Role / Device Role / Timing Role: Voltage-triggered crowbar that clamps transients above 98V while maintaining <200pF loading on 1–30MHz signals.

Use Value: Prevents permanent damage to analog front-end ICs (e.g., TI THS6212) by limiting surge energy via controlled 3.5V on-state voltage drop.

Use Scenario: Shields T1/E1 framer and transformer-coupled PHY circuits from fast-rising common-mode surges per ITU-T K.21.

IC Role / Device Role / Timing Role: Bidirectional transient suppressor placed across line transformer secondary windings.

Use Value: Maintains signal integrity with <200pF capacitance while delivering 100A (10/1000μs) surge handling for carrier-grade network termination units.

ISDN BRI S/T Interface

VoIP Gateway Line Card

Use Scenario: Safeguards ISDN basic rate interface (2B+D) transceivers against accidental AC power cross-connects and induced surges.

IC Role / Device Role / Timing Role: Standoff-rated protector (75V) that remains non-conductive during 56V DC line powering but triggers at 98V overvoltage.

Use Value: Eliminates need for discrete bridge rectifiers by providing inherent bidirectional clamping, reducing BOM count and PCB area.

Use Scenario: Integrated into residential VoIP gateway line cards to meet FCC Part 68 and UL497B safety requirements.

IC Role / Device Role / Timing Role: Primary protector upstream of hybrid transformers and SLIC devices in analog telephone adapters.

Use Value: Achieves certified surge immunity (250A @ 10/160μs) while adding only 0.093g mass and 3.94×4.57mm footprint per line.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional TSPD applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Littelfuse SP1003-070	70V V_DRM, 100A I_PP, SMB package, 150pF C_O	Lower stand-off voltage; better suited for 48V systems (e.g., PoE-powered devices)	Select when tighter V_DRM margin is needed relative to nominal line voltage, accepting reduced overvoltage headroom.
Bourns TBU-CA12-200-WH	12V V_DRM, 200A I_PP, higher-speed current-limiting architecture (not thyristor-based)	Not a direct functional replacement; used for secondary protection after primary TSPD	Use only as coordinated secondary protector - not as standalone replacement - due to fundamentally different crowbar vs. current-limiting operation.

Compared with SP1003-070, TB0900H-13 offers +5V higher stand-off margin critical for 56V DSL lines; versus TBU-CA12-200-WH, it provides true bidirectional voltage clamping rather than current interruption, making it suitable as a primary protector in telecom line cards requiring GR-1089-CORE compliance.

Availability

TB0900H-13 is available at Aetrix Electronics and suitable for DSL line interface protection, T1/E1 data line protection, ISDN BRI S/T interface hardening, and VoIP gateway line card designs requiring stable component supply and long-term lifecycle support.

Supply support for TB0900H-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.

TB0900H-13 belongs to the TBxxxH series of bidirectional thyristor surge protectors engineered specifically for telecom line interface compliance with GR-1089-CORE, IEC 61000-4-5, and UL497B standards.

FAQ

What is the maximum operating temperature for TB0900H-13?

The TB0900H-13 has a specified junction temperature range of –40°C to +150°C and storage temperature range of –55°C to +150°C. Its thermal resistance (R_θJA) is 100°C/W, so sustained operation at +85°C ambient requires ≥1 cm² of internal ground copper to limit junction temperature rise to ≤85°C under worst-case surge duty cycle.

Does TB0900H-13 require external triggering circuitry?

No - TB0900H-13 is a self-triggering, voltage-activated thyristor. It conducts automatically when applied voltage exceeds its 98V breakover voltage (V_BO) and remains latched until current falls below its 150–800mA holding current (I_H). No gate drive or control signal is needed.

How does TB0900H-13 differ from TVS diodes in surge protection?

TB0900H-13 uses thyristor-based crowbar action with low on-state voltage (3.5V) and high surge current capacity (100A), whereas TVS diodes use avalanche breakdown with higher clamping voltage (e.g., 120V for 75V-rated devices) and lower peak current. This makes TB0900H-13 more effective for protecting low-voltage analog front-ends where clamping voltage margin is critical.

Is TB0900H-13 compliant with RoHS and halogen-free standards?

Yes - TB0900H-13 features lead-free matte tin plating and green molding compound with zero halogens and antimony, meeting EU Directive 2002/95/EC (RoHS) and IPC-4101D/126 requirements. Its UL Recognized Component file number is E156346.

TB0900H-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):: 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

TB0900H-13 FAQ

1.How can I place an order for TB0900H-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for TB0900H-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 TB0900H-13 reliable?

The price and inventory of TB0900H-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB0900H-13 is usually 5 days.

3.What payment methods are accepted for TB0900H-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB0900H-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TB0900H-13?

TB0900H-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TB0900H-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 TB0900H-13?

For technical support, including TB0900H-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB0900H-13 requirements.

6.How does Aetrix verify that TB0900H-13 is sourced from the original manufacturer or authorized distributors?

All TB0900H-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 TB0900H-13 meets industry standards.

7.What is the process for return or replacement of TB0900H-13?

All TB0900H-13 units undergo pre-shipment inspection (PSI). If there is an issue with TB0900H-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 TB0900H-13 part is unused and in its original packaging.

Return procedure for TB0900H-13:

1.Submit a request within 90 days.

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

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