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

Diodes Incorporated TB3500L-13-F

Name: TB3500L-13-F
Brand: Diodes Incorporated
SKU: TB3500L-13-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TB3500L-13-F

Manufacturer:: Diodes Incorporated

Category:: Thyristors

Package:: DO-214AA, SMB

Datasheet:: TB3500L-13-F.pdf

Description:: THYRISTOR 320V 150A DO-214AA

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Product details

Overview

TB3500L-13-F from Diodes Incorporated is a bidirectional surface-mount thyristor surge protective device (TSPD) designed for primary-level transient overvoltage suppression in telecom and data line interfaces. It features a 320V maximum stand-off voltage (V_DRM), 400V breakover voltage (V_BO), 30A peak pulse current (10/1000μs), 150A peak pulse current (8/20μs), and 40pF 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 TB3500L-13-F datasheet, TB3500L-13-F pinout, TB3500L-13-F application, or TB3500L-13-F equivalent, key selection criteria include stand-off voltage margin relative to line operating voltage, surge current rating under ITU-T K.20/K.21 waveforms, off-state capacitance impact on signal integrity, and SMB package thermal performance in high-density 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 V_BO (400V typical), then latches into low-voltage on-state (<3.5V at 1A) until current falls below holding current (150–800mA). Its oxide-glass passivated junction ensures stable V_BO drift of only +0.1%/°C over temperature.

Designed for single-device bidirectional protection, it eliminates need for back-to-back diac or dual-TSPD configurations. Thermal resistance is 30°C/W junction-to-lead and 120°C/W junction-to-ambient, supporting continuous operation up to +150°C junction temperature with appropriate PCB copper area.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DRM	320V - Maximum continuous working voltage before conduction; sets minimum line voltage headroom for protected interface
V_BO	400V typical - Voltage threshold triggering crowbar action; defines clamping onset point for fast transients
I_PP (10/1000μs)	30A - Surge handling capability per GR-1089-CORE; determines survivability against lightning-induced surges
I_PP (8/20μs)	150A - Higher-energy surge rating per IEC 61000-4-5; supports AC mains-coupled transient immunity
C_O	40pF - Off-state capacitance at 2VDC bias and 1MHz; limits insertion loss and signal distortion on high-speed lines
R_θJL	30°C/W - Junction-to-lead thermal resistance; enables direct heat transfer to PCB copper pour for power dissipation
I_H	150–800mA - Minimum current required to maintain on-state; ensures reliable reset after surge decay

Pinout & Package

Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; case material is UL 94V-0 molded plastic; weight ≈0.093g.

Pin/Terminal	Circuit Role	Design Meaning
Anode/Cathode (A/K)	Bidirectional main terminals	Interchangeable due to symmetrical structure; both terminals conduct equally in either direction during surge event
Case	Non-electrical mechanical interface	No electrical connection; serves only as thermal path and mechanical anchor; must be isolated from other nets

Key Features

Feature	Design Value
Bidirectional protection in single device	Eliminates need for dual-diode or back-to-back configuration; reduces BOM count and board space by 50% vs discrete solutions
Oxide-glass passivated junction	Ensures ±5% V_BO tolerance and <0.1%/°C temperature coefficient - critical for consistent clamping across industrial temperature range
UL Recognized Component (File E156346)	Validates compliance with UL497B for telecom surge protection - removes need for end-equipment re-certification
Lead-free & halogen-free construction	Meets RoHS Directive 2002/95/EC and JEDEC J-STD-020 moisture sensitivity Level 1 - supports automated assembly without pre-bake

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 / Timing Role: Primary crowbar device placed between line transformer secondary and PHY IC; triggers within nanoseconds upon overvoltage detection.

Use Value: Limits surge energy to <1.5J per event while maintaining <40pF capacitance - preserves signal integrity up to 30MHz.

Use Scenario: Safeguarding T1/E1 framer and line interface units (LIUs) against longitudinal surges in central office and CPE equipment.

IC Role / Device Role / Timing Role: Standoff protector across tip/ring pair; clamps 150A 8/20μs surges without degradation after ≥1000 events.

Use Value: Enables GR-1089-CORE Level 3 compliance with single-device solution - reduces component count and layout complexity.

ISDN BRI Protection

Industrial Ethernet Port Protection

Use Scenario: Securing ISDN basic rate interface (2B+D) ports against electrostatic discharge and power cross events.

IC Role / Device Role / Timing Role: Bidirectional shunt element across each B-channel pair; holds off 320V DC line voltage while responding to >400V transients.

Use Value: Provides fail-safe protection with no leakage current above 5μA - prevents false triggering in idle state.

Use Scenario: Adding primary-level surge immunity to 10/100BASE-TX Ethernet PHY ports in industrial gateways and PLCs.

IC Role / Device Role / Timing Role: First-stage protector upstream of GDT or TVS array; absorbs bulk surge energy before secondary clamping.

Use Value: Delivers 150A 8/20μs rating with 30°C/W thermal resistance - sustains repeated surges without thermal runaway.

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 SP1003-032	32V V_DRM, 100A I_PP (8/20μs), 100pF C_O; smaller SOT-23 package	Targeted at low-voltage data lines (USB, RS-485); unsuitable for 320V telecom lines	Select only for sub-50V systems requiring ultra-low capacitance and compact footprint
Bourns TISP4240H3BJR-S	240V V_DRM, 100A I_PP (8/20μs), 60pF C_O; TO-236AB package	Rated for 240V AC mains interfaces; lower stand-off voltage limits use in 320V DSL applications	Prefer for AC-powered telecom equipment where 240V standoff suffices and higher surge margin is needed

Compared with SP1003-032 and TISP4240H3BJR-S, TB3500L-13-F uniquely balances 320V standoff, 150A surge rating, and 40pF capacitance in SMB - making it optimal for high-voltage telecom line cards where both voltage margin and signal fidelity are critical.

Availability

TB3500L-13-F is available at Aetrix Electronics and suitable for DSL line card protection, T1/E1 interface protection, and ISDN BRI protection requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.

Supply support for TB3500L-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 the Americas.

TB3500L belongs to Diodes' TB-series bidirectional TSPDs - engineered specifically for telecom infrastructure protection, emphasizing high stand-off voltage accuracy, repeatable surge endurance, and compatibility with automated SMT assembly.

FAQ

What is the maximum continuous operating voltage for TB3500L-13-F?

The maximum rated repetitive off-state voltage (V_DRM) is 320V. This is the highest DC or RMS AC voltage the device can block continuously without triggering. Operation above this level risks unintended conduction; design margin should maintain at least 20% below V_DRM under worst-case line conditions.

Does TB3500L-13-F require a gate drive or external trigger circuit?

No. TB3500L-13-F is a passive, voltage-triggered thyristor device with no gate terminal. It conducts automatically when voltage across its terminals exceeds the breakover voltage (V_BO = 400V typical), then remains latched until current drops below holding current (I_H = 150–800mA).

How does TB3500L-13-F compare to a standard TVS diode for telecom surge protection?

Unlike unidirectional TVS diodes, TB3500L-13-F provides symmetric bidirectional clamping without polarity concerns. Its thyristor structure offers lower on-state voltage (<3.5V at 1A) and higher surge current capacity (150A vs typical 100A for SMB TVS), but with slower response (~100ns vs <1ns for TVS) - making it ideal for primary-level, high-energy surges rather than ESD.

Can TB3500L-13-F be used in parallel for higher surge current handling?

Parallel operation is not recommended. Thyristor devices exhibit negative temperature coefficient behavior during conduction, leading to current hogging and thermal imbalance. For higher surge ratings, select a higher-rated part (e.g., TB3100L-13-F for 275V or custom designs with external current-sharing resistors).

TB3500L-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):: 150 A

Current - Peak Pulse (10/1000µs):: 30 A

Current - Hold (Ih):: 150 mA

Number of Elements:: 1

Capacitance:: 40pF

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMB

TB3500L-13-F FAQ

1.How can I place an order for TB3500L-13-F through Aetrix?

Please submit a Request for Quotation (RFQ) for TB3500L-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 TB3500L-13-F reliable?

The price and inventory of TB3500L-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 TB3500L-13-F is usually 5 days.

3.What payment methods are accepted for TB3500L-13-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB3500L-13-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TB3500L-13-F?

TB3500L-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TB3500L-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 TB3500L-13-F?

For technical support, including TB3500L-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB3500L-13-F requirements.

6.How does Aetrix verify that TB3500L-13-F is sourced from the original manufacturer or authorized distributors?

All TB3500L-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 TB3500L-13-F meets industry standards.

7.What is the process for return or replacement of TB3500L-13-F?

All TB3500L-13-F units undergo pre-shipment inspection (PSI). If there is an issue with TB3500L-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 TB3500L-13-F part is unused and in its original packaging.

Return procedure for TB3500L-13-F:

1.Submit a request within 90 days.

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

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