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Taiwan Semiconductor Corporation TLD5S11AH
- Part No.:
- TLD5S11AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
TLD5S11AH.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,390
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Product details
Overview
TLD5S11AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for automotive load dump surge protection in 12V systems. It features a 12.2–13.5 V breakdown voltage (VBR), 11.0 V working stand-off voltage (VWM), 18.2 V clamping voltage at 150 A, and 3600 W peak pulse power (10/1000 µs). It operates up to 175 °C junction temperature and meets ISO 7637-2, ISO 16750-2, and IEC 61000-4-2 Level 4.
For engineers reviewing the TLD5S11AH datasheet, TLD5S11AH pinout, TLD5S11AH application, or TLD5S11AH equivalent, key selection criteria include its DO-218AB package thermal performance (RθJC = 0.9 °C/W), unidirectional polarity, 10 µA max leakage at VWM, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The TLD5S11AH employs junction passivation optimized design technology to sustain 175 °C continuous operation and withstand repetitive load dump transients per ISO 7637-2. Its DO-218AB package enables high-power dissipation with low thermal resistance (0.9 °C/W junction-to-case) when mounted on an ideal heatsink.
It delivers 3600 W non-repetitive peak impulse power under 10/1000 µs waveform and 2800 W under 10/10000 µs waveform, with clamping voltage tightly controlled at 18.2 V at 150 A - critical for protecting downstream 12V automotive electronics such as ECUs and body control modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 12.2 V / 13.5 V - defines minimum and maximum guaranteed breakdown threshold at 5 mA test current |
| VWM | 11.0 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM=150 A | 18.2 V - clamping voltage during 150 A transient, limiting stress on protected ICs |
| PPPM (10/1000 µs) | 3600 W - peak surge power handling capability for short-duration load dump events |
| RθJC | 0.9 °C/W - enables effective thermal management in high-power automotive mounting configurations |
| TJ max | 175 °C - supports operation in under-hood environments without derating |
| IR @ VWM | 10 µA - ultra-low leakage preserves battery life in always-on vehicle subsystems |
Pinout & Package
Package: DO-218AB - surface-mount, unidirectional, single-die TVS diode with matte tin-plated leads, UL 94V-0 molding compound, and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Transient current sink | Connected to protected line; conducts surge current to ground during overvoltage |
| Anode | Reference/return path | Typically tied to system ground; completes conduction path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use including temperature cycling, humidity, and mechanical shock per AEC standard |
| Junction passivation optimized design | Enables stable 175 °C operation and long-term reliability under thermal stress |
| Meets ISO 7637-2 & ISO 16750-2 | Guarantees robustness against real-world automotive load dump and supply transients |
| Moisture sensitivity level 1 | Eliminates need for dry-pack or baking prior to reflow soldering |
| Uni-directional configuration | Provides precise clamping only on negative transients relative to ground - ideal for 12V rail protection |
Applications
| Engine Control Unit (ECU) Protection | Body Control Module (BCM) Power Rail |
|---|---|
Use Scenario: Protects ECU 12V input against alternator load dump surges during battery disconnect events. IC Role / Device Role / Timing Role: TVS diode placed directly at ECU power entry point to clamp transients before they reach LDOs and microcontrollers. Use Value: Limits clamping voltage to 18.2 V at 150 A, preventing damage to 20 V-rated input stages while supporting AEC-Q101 compliance. | Use Scenario: Shields BCM power inputs from coupled transients during door lock actuation or lighting load switching. IC Role / Device Role / Timing Role: Unidirectional TVS connected between 12V rail and chassis ground to absorb negative-going spikes. Use Value: Delivers 3600 W peak power handling with <10 µA leakage at 11 V, minimizing standby current draw. |
| Infotainment System Power Input | ADAS Camera Module Supply Line |
Use Scenario: Guards infotainment head unit power input against ignition-induced transients and jump-start surges. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on main 12V supply, upstream of DC-DC converters. Use Value: Maintains 11.0 V stand-off while clamping to 18.2 V - compatible with 24 V tolerant input stages and avoids false triggering. | Use Scenario: Protects camera module's 12V supply from EMI-coupled transients in ADAS domain controllers. IC Role / Device Role / Timing Role: Compact DO-218AB TVS placed near connector to minimize loop inductance during fast transients. Use Value: Achieves 0.9 °C/W thermal resistance, enabling reliable operation at 125 °C ambient in sealed camera housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ11A | Lower PPPM (400 W), SMA package, RθJC ≈ 45 °C/W, VC = 18.2 V @ 21.9 A | Not suitable for load dump; limited to lower-energy ESD/surge events | Select TLD5S11AH for automotive load dump; SMAJ11A only for board-level ESD where power is <500 W |
| TPSMD11A | Same DO-218AB package, PPPM = 3000 W (10/1000 µs), VC = 19.0 V @ 150 A, no AEC-Q101 certification | Lacks automotive qualification; not validated for ISO 7637-2 load dump waveforms | TLD5S11AH preferred for production automotive designs requiring AEC-Q101 and ISO compliance |
Compared with SMAJ11A and TPSMD11A, the TLD5S11AH uniquely combines 3600 W surge rating, AEC-Q101 qualification, and DO-218AB thermal performance - making it the only option among the three validated for full automotive load dump protection in 12V systems.
Availability
TLD5S11AH is available at Aetrix Electronics and suitable for automotive ECU protection, body control module hardening, and ADAS camera power conditioning requiring stable component supply across extended temperature and surge conditions.
Supply support for TLD5S11AH 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
Taiwan Semiconductor Company (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, and automotive-qualified components.
The TLD5SxxAH series was developed specifically for high-reliability automotive transient suppression, targeting ISO 7637-2 load dump and ISO 16750-2 surge immunity in 12V and 24V vehicle architectures.
FAQ
What is the clamping voltage of the TLD5S11AH at its rated peak pulse current?
The TLD5S11AH has a maximum clamping voltage (VC) of 18.2 V at 150 A peak pulse current (10/1000 µs waveform). This value is measured under standardized surge conditions and ensures downstream 12V electronics remain within safe operating limits. The TLD5S11AH maintains this clamping performance across its full operating temperature range, supporting robust design in automotive under-hood applications.
Is the TLD5S11AH AEC-Q101 qualified and what does that mean for automotive use?
Yes, the TLD5S11AH is AEC-Q101 qualified - meaning it has passed accelerated stress tests for temperature cycling, humidity, mechanical shock, and high-temperature operating life required for automotive discrete semiconductors. This qualification confirms the TLD5S11AH is suitable for safety-critical and mission-relevant vehicle subsystems, including engine control, body electronics, and ADAS power rails.
What package type does the TLD5S11AH use and why is it important for high-power TVS applications?
The TLD5S11AH uses the DO-218AB surface-mount package, which provides superior thermal performance (RθJC = 0.9 °C/W) compared to smaller packages like SMA or SMC. This enables efficient heat transfer to the PCB or heatsink during high-energy transients such as load dump. The DO-218AB also supports higher surge current handling - essential for the 3600 W rating of the TLD5S11AH.
How does the TLD5S11AH compare to the TLD5S10AH and TLD5S12AH in terms of voltage ratings?
The TLD5S11AH has a VBR range of 12.2–13.5 V and VWM of 11.0 V, positioning it between TLD5S10AH (VBR: 11.1–12.3 V, VWM: 10.0 V) and TLD5S12AH (VBR: 13.3–14.7 V, VWM: 12.0 V). All share identical power ratings, thermal specs, and packaging. Selection depends on required margin between system nominal voltage and VWM; the TLD5S11AH is optimized for 12V systems with tight tolerance requirements.
Does the TLD5S11AH meet international surge immunity standards relevant to automotive electronics?
Yes, the TLD5S11AH meets ISO 7637-2 (load dump), ISO 16750-2 (electrical loads), and IEC 61000-4-2 Level 4 (ESD) standards. These certifications are verified through standardized test waveforms and confirm the TLD5S11AH's ability to protect sensitive electronics against real-world automotive electrical disturbances without degradation or failure.
TLD5S11AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-218AB
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 198A
- Power - Peak Pulse:
- 2800W (2.8kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-218AB
TLD5S11AH FAQ
1.How can I place an order for TLD5S11AH through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD5S11AH 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 TLD5S11AH reliable?
The price and inventory of TLD5S11AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD5S11AH is usually 5 days.
3.What payment methods are accepted for TLD5S11AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD5S11AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD5S11AH?
TLD5S11AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD5S11AH 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 TLD5S11AH?
For technical support, including TLD5S11AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD5S11AH requirements.
6.How does Aetrix verify that TLD5S11AH is sourced from the original manufacturer or authorized distributors?
All TLD5S11AH 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 TLD5S11AH meets industry standards.
7.What is the process for return or replacement of TLD5S11AH?
All TLD5S11AH units undergo pre-shipment inspection (PSI). If there is an issue with TLD5S11AH, 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 TLD5S11AH part is unused and in its original packaging.
Return procedure for TLD5S11AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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