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

Diodes Incorporated TB1500L-13

Name: TB1500L-13
Brand: Diodes Incorporated
SKU: TB1500L-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TB1500L-13

Manufacturer:: Diodes Incorporated

Category:: Thyristors

Package:: DO-214AA, SMB

Datasheet:: TB1500L-13.pdf

Description:: THYRISTOR 140V 150A DO-214AA

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Product details

TB1500L-13 from Diodes Incorporated

TB1500L-13 from Diodes Incorporated is a bi-directional surface-mount thyristor surge protective device (TSPD) designed for AC line and telecom port protection. It features 140V stand-off voltage, 30A peak pulse current (10/1000μs), 150A peak pulse current (8/20μs), 180V breakover voltage, and low 3.5V on-state voltage at 1A - deployed in DSL/Cable Modem surge interfaces and PoE-powered Ethernet ports.

For engineers reviewing the TB1500L-13 datasheet, TB1500L-13 pinout, TB1500L-13 application, or TB1500L-13 equivalent, key selection criteria include verified bi-directional clamping behavior, SMB package thermal resistance (R_θJL = 30°C/W), off-state capacitance (60 pF @ 1 MHz), holding current range (150–800 mA), and junction temperature limits (–40°C to +150°C).

Technical Context

This TSPD operates as a voltage-triggered crowbar device: it remains high-impedance below 140V (V_DRM), transitions rapidly to low-impedance conduction above 180V (V_BO), and sustains conduction until current falls below 150–800 mA (I_H). Its oxide-glass passivated junction ensures stable breakdown over temperature (dV_BR/dT_j = +0.1%/°C).

Designed for single-phase AC line protection, it handles repetitive surges per IEC 61000-4-5 (8/20μs, 150A) and GR-1089-CORE (10/1000μs, 30A). No polarity marking is required due to inherent bi-directionality, and recovery time is ≤30 ms after surge clearance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DRM	140 V - Maximum continuous AC/DC voltage before triggering; sets operating margin for 120VAC or 48VDC systems.
I_PP (10/1000μs)	30 A - Surge current handling per GR-1089-CORE; defines robustness against lightning-induced long-tail transients.
I_PP (8/20μs)	150 A - Peak current per IEC 61000-4-5; qualifies for telecom and industrial surge immunity standards.
V_BO	180 V - Breakover voltage threshold; triggers clamping before downstream ICs exceed absolute maximum ratings.
V_T @ 1A	3.5 V - Low on-state voltage minimizes power dissipation (3.5W max at 1A) during clamping events.
C_O	60 pF - Measured at 1 MHz, 2V DC bias; enables use in high-speed data lines without signal integrity degradation.
R_θJL	30 °C/W - Junction-to-lead thermal resistance supports sustained surge duty cycles without thermal runaway in SMB footprint.

Pinout & Package

Package: SMB (DO-214AA), surface-mount, UL 94V-0 molded plastic case, moisture sensitivity level 1, solderable per MIL-STD-202 Method 208.

Pin/Terminal	Circuit Role	Design Meaning
Anode (A)	Current entry terminal during positive half-cycle conduction	Bi-directional symmetry means either terminal serves as anode or cathode depending on polarity of applied surge.
Cathode (K)	Current exit terminal during positive half-cycle conduction	No polarity marking; terminals are functionally interchangeable - device conducts regardless of voltage polarity across A-K.

Key Features

Feature	Design Value
Bi-directional clamping	Enables single-device protection of AC lines or differential data pairs without external diode bridges.
Oxide-glass passivated junction	Ensures stable V_BO over lifetime and temperature; eliminates parameter drift seen in non-passivated thyristors.
Low 3.5V on-state voltage	Reduces clamping energy (I × V_T) and avoids overheating during multi-pulse surge events.
60 pF off-state capacitance	Preserves signal integrity on 10/100/1000BASE-T Ethernet and VDSL2 lines up to 30 MHz.
SMB package with R_θJL = 30°C/W	Allows direct PCB heat sinking via copper pour; supports >1000 surge cycles without derating at 25°C ambient.

Applications

DSL/Cable Modem Line Protection

PoE-Powered Ethernet Ports

Use Scenario: Protects RJ-11/RJ-45 ports from induced lightning surges and AC mains coupling in residential gateways.

IC Role / Device Role / Timing Role: Crowbar-type transient suppressor that latches low-impedance state during surge, diverting >95% of current away from PHY ICs.

Use Value: 140V V_DRM provides 15% margin above 120VAC RMS; 60 pF C_O avoids insertion loss in ADSL2+ band (up to 2.2 MHz).

Use Scenario: Safeguards 802.3af/at PD interface circuitry against ESD and surge entering via Ethernet cable shield or pair.

IC Role / Device Role / Timing Role: Bi-directional voltage-triggered switch placed between PSE output and PD front-end rectifier.

Use Value: 180V V_BO clamps before 100V PoE open-circuit voltage damages bridge rectifier or DC-DC controller.

Industrial AC Motor Control Inputs

Smart Meter Communication Interfaces

Use Scenario: Shields PLC I/O modules connected to 24VAC control lines exposed to relay coil flyback and field wiring noise.

IC Role / Device Role / Timing Role: Standby-mode protector that remains non-conductive until >180V transient appears, then clamps within <100 ns.

Use Value: 30°C/W R_θJL allows mounting directly on motor drive PCB copper; no heatsink needed for intermittent 30A surges.

Use Scenario: Secures RS-485 or HPLC (HomePlug AV) couplers in electricity meters against neutral-ground potential differences and grid switching transients.

IC Role / Device Role / Timing Role: Bidirectional shunt element across differential bus lines, triggered symmetrically on either polarity excursion.

Use Value: 150A I_PP (8/20μs) meets IEC 61000-4-5 Level 4 requirements for utility-grade metering equipment.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bi-directional thyristor surge protection applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SM15T150A (STMicro)	Unidirectional TVS diode; 150V V_BR, 32.4V V_C, 175A I_PP (8/20μs); no latching behavior.	Requires external series impedance to limit current; cannot sustain clamping without external crowbar circuit.	Select when fast response (<1 ps) and precise clamping voltage are prioritized over self-sustaining conduction.
P6SMB150A (ON Semi)	Unidirectional TVS; 150V V_BR, 243V V_C; 100A I_PP (8/20μs); no holding current or latching.	Limited to single-polarity surges; requires dual-device configuration for AC line protection.	Choose for cost-sensitive designs where bidirectional capability is implemented via back-to-back placement.

Compared with SM15T150A and P6SMB150A, TB1500L-13 delivers true bi-directional latching behavior in one SMB device, eliminating external components and enabling lower system-level clamping voltage with guaranteed recovery - critical for protecting sensitive analog front-ends in metering and telecom.

Availability

TB1500L-13 is available at Aetrix Electronics and suitable for DSL/Cable Modem line protection, PoE-powered Ethernet ports, and industrial AC motor control inputs requiring stable component supply and repeatable surge performance across production batches.

Supply support for TB1500L-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, computing, and communications markets.

TB1500L-13 belongs to the TB-series bi-directional TSPD product line, engineered specifically for robust, self-latching surge suppression in AC mains, telecom, and data-line interfaces where low capacitance and precise voltage thresholds are mandatory.

FAQ

What is the minimum current required to maintain conduction after triggering?

The holding current (I_H) ranges from 150 mA to 800 mA at 25°C. Conduction ceases only when load current drops below this threshold - critical for ensuring full surge energy diversion before returning to high-impedance state. Temperature increases reduce I_H by ~15% at 125°C.

Does TB1500L-13 require a series current-limiting resistor?

No external resistor is required for basic crowbar operation, as the device self-limits current via its on-state voltage (3.5 V) and internal resistance. However, a series resistor may be added to reduce peak surge current into downstream circuits during clamping - especially when protecting low-energy nodes like microcontroller I/O.

How does junction temperature affect breakover voltage?

Breakover voltage exhibits a positive temperature coefficient of +0.1%/°C. At 125°C, V_BO rises to ~198 V versus 180 V at 25°C - increasing trigger margin in hot environments but requiring verification against downstream IC absolute maximum ratings under worst-case thermal conditions.

Can TB1500L-13 be used in DC applications?

Yes - its bi-directional nature supports both AC and DC surge protection. In DC systems (e.g., 48V PoE), it triggers on overvoltage in either polarity and holds until current falls below I_H. Ensure the steady-state DC current never exceeds 15 A (I_TSM) to avoid thermal damage during sustained fault conditions.

TB1500L-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Package/Case:: DO-214AA, SMB

Series:: -

Packaging:: Cut Tape (CT)

Product Status:: Active

Voltage - Breakover:: 180V

Voltage - Off State:: 140V

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:: 60pF

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMB

TB1500L-13 FAQ

1.How can I place an order for TB1500L-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for TB1500L-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 TB1500L-13 reliable?

The price and inventory of TB1500L-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TB1500L-13 is usually 5 days.

3.What payment methods are accepted for TB1500L-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TB1500L-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TB1500L-13?

TB1500L-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TB1500L-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 TB1500L-13?

For technical support, including TB1500L-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TB1500L-13 requirements.

6.How does Aetrix verify that TB1500L-13 is sourced from the original manufacturer or authorized distributors?

All TB1500L-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 TB1500L-13 meets industry standards.

7.What is the process for return or replacement of TB1500L-13?

All TB1500L-13 units undergo pre-shipment inspection (PSI). If there is an issue with TB1500L-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 TB1500L-13 part is unused and in its original packaging.

Return procedure for TB1500L-13:

1.Submit a request within 90 days.

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

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