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

Diodes Incorporated TB3500M-13-F

Name: TB3500M-13-F
Brand: Diodes Incorporated
SKU: TB3500M-13-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TB3500M-13-F

Manufacturer:: Diodes Incorporated

Category:: Thyristors

Package:: DO-214AA, SMB

Datasheet:: TB3500M-13-F.pdf

Description:: THYRISTOR 320V 250A DO-214AA

Quantity:: RFQ Add To RFQ list

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Inventory:3,093

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Product details

Overview

TB3500M-13-F from Diodes Incorporated is a bidirectional surface-mount thyristor surge protection device (TSPD) rated for 320V stand-off voltage, 50A peak pulse current (10/1000μs), and 250A peak pulse current (8/20μs), with low on-state voltage (3.5V @ 1A) and 60pF off-state capacitance. It is used in telecom line interface circuits to suppress lightning-induced transients per ITU-T K.20/K.21 and IEC 61000-4-5.

For engineers reviewing the TB3500M-13-F datasheet, TB3500M-13-F pinout, TB3500M-13-F application, or TB3500M-13-F equivalent, key selection criteria include stand-off voltage margin, peak pulse rating, off-state capacitance for high-speed data lines, and UL recognition for telecom safety compliance.

Technical Context

This TSPD operates as a voltage-triggered crowbar device: it remains in high-impedance off-state until transient voltage exceeds its 400V breakover threshold (V_BO), then latches into low-voltage conduction until current falls below 150–800mA holding current (I_H). Its oxide-glass passivated junction ensures stable triggering over temperature.

Designed for bidirectional AC line protection, it delivers symmetrical clamping without polarity marking and maintains <5μA leakage at 320V (V_DRM) across –40°C to +150°C junction range. Thermal resistance is 20°C/W (junction-to-lead) and 100°C/W (junction-to-ambient).

Key Specifications

Parameter	Value and Actual Design Meaning
Stand-off Voltage (V_DRM)	320V - Maximum continuous AC/DC voltage before conduction; sets minimum operating margin for 275V nominal telecom lines.
Breakover Voltage (V_BO)	400V - Voltage at which device triggers into low-impedance state; defines clamping onset for surges exceeding V_DRM.
Peak Pulse Current (10/1000μs)	50A - Surge handling capability per GR-1089-CORE; determines survivability against long-duration induced transients.
Off-State Capacitance (C_O)	60pF - Measured at 1MHz, 2V bias; enables use on E1/T1 interfaces without signal integrity degradation.
Holding Current (I_H)	150–800mA - Minimum current required to sustain conduction; ensures reliable reset after surge decay in series-impedance-limited circuits.
On-State Voltage (V_T)	3.5V @ 1A - Low clamping voltage during conduction; limits power dissipation and protects downstream silicon.
Thermal Resistance (R_θJL)	20°C/W - Junction-to-lead thermal path; supports sustained surge duty cycles when mounted on copper pour.

Pinout & Package

Package: SMB (DO-214AA), surface-mount, bidirectional, no polarity marking. Molded plastic case (UL 94V-0), matte tin-plated terminals, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode/Cathode (symmetrical)	Surge current path	Identical terminals; either may serve as input or output-no directional bias required for AC line protection.
Case (exposed pad)	Thermal conduction path	Not electrically connected; provides mechanical stability and aids heat dissipation to PCB copper.

Key Features

Feature	Design Value
Bidirectional surge suppression	Enables single-device protection of AC-coupled telecom lines (e.g., xDSL, POTS) without external diode bridges.
Oxide-glass passivated junction	Ensures stable V_BO over temperature (±0.1%/°C) and long-term reliability under repeated surge stress.
UL Recognized Component (File E156346)	Validates compliance with UL497B for telecom primary protector applications-reduces certification burden.
Lead-free & halogen-free construction	Meets RoHS Directive 2002/95/EC and green compound requirements (no Br, Cl, Sb), supporting environmental compliance programs.

Applications

DSL Line Interface Protection

POTS Telephone Line Protection

Use Scenario: Protects ADSL/VDSL line cards from lightning surges entering via twisted-pair copper lines.

IC Role / Device Role / Timing Role: Primary crowbar protector placed before line transformer and receiver ICs.

Use Value: 320V V_DRM accommodates 275V RMS ringing voltage; 60pF C_O preserves signal bandwidth up to 2.2MHz.

Use Scenario: Shields analog telephone interface circuits (SLIC, codec) from induced transients on PSTN lines.

IC Role / Device Role / Timing Role: Standby-mode protector that triggers only during surge events, remaining transparent during normal operation.

Use Value: 50A 10/1000μs rating meets GR-1089-CORE Level 3 requirements; UL recognition satisfies telecom safety audits.

ISDN BRI Line Protection

Alarm & Security System Lines

Use Scenario: Safeguards ISDN Basic Rate Interface (2B+D) termination equipment connected to outside plant wiring.

IC Role / Device Role / Timing Role: Bidirectional clamp on both B-channels and D-channel, eliminating need for dual unidirectional devices.

Use Value: Symmetrical V_BO (400V) ensures equal clamping for positive/negative surges; SMB package fits dense line-card layouts.

Use Scenario: Protects fire alarm control panels and security system sensors linked via long outdoor cabling.

IC Role / Device Role / Timing Role: First-stage protector in multi-stage TVS/TSPD cascade, absorbing bulk surge energy before secondary clamping.

Use Value: 250A 8/20μs rating handles high-current fast transients from nearby lightning strikes; 150–800mA I_H ensures clean recovery post-surge.

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
Littelfuse SP1003-030	300V V_DRM, 30A 10/1000μs, 100pF C_O, TO-220 package	Lower stand-off voltage and higher capacitance; requires heatsink mounting	Select when lower cost and higher surge repetition rate are prioritized over board space and high-frequency performance.
Bourns TISP4240M3JR-S	240V V_DRM, 50A 10/1000μs, 100pF C_O, DO-214AB package	Lower voltage rating and larger footprint; not UL-recognized for telecom	Choose for industrial control inputs where UL497B is not mandated and 240V line margin suffices.

Compared with SP1003-030 and TISP4240M3JR-S, TB3500M-13-F offers superior high-voltage margin (320V), lowest off-state capacitance (60pF), and UL recognition-making it optimal for space-constrained, high-bandwidth telecom line protection where regulatory compliance is mandatory.

Availability

TB3500M-13-F is available at Aetrix Electronics and suitable for DSL line interface protection, POTS telephone line protection, and ISDN BRI line protection requiring stable component supply, consistent surge performance, and full regulatory documentation traceability.

Supply support for TB3500M-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.

TB3500M-13-F belongs to Diodes' TSPD (Thyristor Surge Protection Device) product line, engineered specifically for robust, bidirectional transient suppression in telecom infrastructure, voice/data line interfaces, and industrial communication ports.

FAQ

What is the maximum operating temperature for TB3500M-13-F?

The TB3500M-13-F has a specified junction temperature range of –40°C to +150°C. Its thermal resistance (R_θJL) is 20°C/W, meaning a 1W power dissipation raises junction temperature by 20°C above lead temperature. Derating is required above +125°C ambient per the datasheet's thermal characteristics table.

Does TB3500M-13-F require a gate trigger circuit?

No. TB3500M-13-F is a three-layer bidirectional thyristor with no gate terminal-it triggers automatically when applied voltage exceeds its 400V breakover voltage (V_BO). No external control or biasing is needed, simplifying circuit design and reducing BOM count.

How does TB3500M-13-F differ from a standard TVS diode?

Unlike avalanche-based TVS diodes, TB3500M-13-F is a thyristor that latches into low-impedance conduction once triggered, sustaining clamping until current drops below its holding threshold (150–800mA). This provides lower clamping voltage under high-current surges but requires sufficient series impedance for self-resetting.

Is TB3500M-13-F compliant with RoHS and REACH?

Yes. TB3500M-13-F features lead-free plating (matte tin finish) and green molding compound (halogen- and antimony-free), fully compliant with EU Directive 2002/95/EC (RoHS) and REACH SVHC requirements, as confirmed in Diodes Incorporated's official compliance documentation.

TB3500M-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:: 400V

Voltage - Off State:: 320V

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:: 60pF

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMB

TB3500M-13-F FAQ

1.How can I place an order for TB3500M-13-F through Aetrix?

Please submit a Request for Quotation (RFQ) for TB3500M-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 TB3500M-13-F reliable?

The price and inventory of TB3500M-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 TB3500M-13-F is usually 5 days.

3.What payment methods are accepted for TB3500M-13-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB3500M-13-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TB3500M-13-F?

TB3500M-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TB3500M-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 TB3500M-13-F?

For technical support, including TB3500M-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB3500M-13-F requirements.

6.How does Aetrix verify that TB3500M-13-F is sourced from the original manufacturer or authorized distributors?

All TB3500M-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 TB3500M-13-F meets industry standards.

7.What is the process for return or replacement of TB3500M-13-F?

All TB3500M-13-F units undergo pre-shipment inspection (PSI). If there is an issue with TB3500M-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 TB3500M-13-F part is unused and in its original packaging.

Return procedure for TB3500M-13-F:

1.Submit a request within 90 days.

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

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