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Taiwan Semiconductor Corporation TLD6S11AH
- Part No.:
- TLD6S11AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
TLD6S11AH.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,076
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Product details
Overview
TLD6S11AH 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 working stand-off voltage of 11.0 V, breakdown voltage range of 12.2–13.5 V at 5 mA, peak pulse power dissipation of 4600 W (10/1000 µs), clamping voltage of 18.2 V at 253 A, and junction temperature rating up to 175 °C.
For engineers reviewing the TLD6S11AH datasheet, TLD6S11AH pinout, TLD6S11AH application, or TLD6S11AH equivalent, key selection criteria include its DO-218AB package compatibility with high-energy ISO 7637-2 load dump waveforms, AEC-Q101 qualification, and verified performance under 175 °C junction operation in engine bay environments.
Technical Context
The TLD6S11AH implements a single-die, unidirectional silicon avalanche structure optimized for fast response to high-energy transients. Its junction passivation design enables stable operation up to TJ = 175 °C and meets ISO 16750-2 supply voltage variation requirements for automotive electronics.
It delivers 4600 W peak pulse power handling (10/1000 µs) with a clamping voltage of 18.2 V at 253 A, and exhibits low thermal resistance (RθJC = 0.85 °C/W) when mounted on an ideal heatsink - enabling robust protection against repetitive load dump events without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11.0 V - Maximum continuous reverse operating voltage before leakage exceeds 10 µA |
| VBR (min/max) | 12.2 V / 13.5 V at IT = 5 mA - Ensures reliable triggering above system nominal voltage |
| VC @ IPPM | 18.2 V at 253 A (10/1000 µs) - Limits downstream IC stress during worst-case load dump |
| PPPM | 4600 W (10/1000 µs) - Withstands ISO 7637-2 Pulse 5a load dump surges in 12V vehicles |
| TJ max | 175 °C - Supports placement near high-temperature engine control units without derating |
| RθJC | 0.85 °C/W - Enables effective heat transfer to PCB copper or external heatsink |
| αT | 0.072 %/°C - Predictable VBR drift over temperature for stable clamping margin |
Pinout & Package
Package: DO-218AB - Surface-mount, unidirectional, single-anode/single-cathode configuration with matte tin-plated leads compliant to J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Polarity marked per standard cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection to protected circuit ground | Provides return path for surge current; must be routed with low-inductance trace to chassis or battery ground |
| Cathode | High-side connection to protected line (e.g., battery rail) | Clamps positive transients by conducting to ground when VIN > VBR; polarity-sensitive installation required |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| ISO 7637-2 & ISO 16750-2 compliance | Passes Pulse 5a (load dump) and supply interruption tests without degradation |
| Junction temperature rating | Operates continuously at TJ = 175 °C - eliminates need for thermal derating in under-hood ECUs |
| Moisture sensitivity level | MSL Level 1 (per J-STD-020) - allows unlimited floor life and standard reflow without baking |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) Battery Rail Clamping |
|---|---|
Use Scenario: Protects microcontroller power rails from 12V battery load dump surges during alternator field decay. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery input and DC-DC converter input. Use Value: Clamps transient to ≤18.2 V at 253 A, preventing overvoltage damage to 3.3 V/5 V LDOs and MCU I/Os. | Use Scenario: Shields BCM power management ICs from ISO 7637-2 Pulse 5a transients during vehicle ignition cycles. IC Role / Device Role / Timing Role: Primary surge suppression device on main 12V supply rail upstream of PMIC. Use Value: Delivers 4600 W peak power handling with <1 ns response time, maintaining system uptime during repeated surges. |
| Advanced Driver Assistance Systems (ADAS) Camera Power Line | Electric Power Steering (EPS) Motor Driver Supply |
Use Scenario: Safeguards image sensor and SerDes ICs in rear-view cameras exposed to harsh under-vehicle electrical noise. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12V camera module input, rated for 11.0 V continuous operation. Use Value: Prevents false resets or latch-up caused by coupled transients while maintaining low leakage (<10 µA at VWM). | Use Scenario: Protects H-bridge gate drivers and current sense amplifiers in EPS systems subject to load dump and jump-start conditions. IC Role / Device Role / Timing Role: High-energy clamping device on motor driver VBAT rail, directly mounted near connector entry point. Use Value: Sustains 175 °C junction temperature during prolonged high-load operation, eliminating thermal shutdown risk. |
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 (10/1000 µs); VC = 18.2 V at 22.5 A; DO-214AC package | Not suitable for ISO 7637-2 load dump; limited to lower-energy ESD/surge events | Select only for non-automotive 12V systems with sub-1 kA surge exposure |
| SMCJ11A | PPPM = 1500 W (10/1000 µs); VC = 18.2 V at 83 A; DO-214AB package | Fails ISO 7637-2 Pulse 5a due to insufficient energy rating; lacks AEC-Q101 qualification | Acceptable for industrial 12V supplies but not for automotive OEM designs requiring full compliance |
Compared with SMAJ11A and SMCJ11A, the TLD6S11AH uniquely combines AEC-Q101 qualification, 4600 W peak power, and DO-218AB thermal performance - making it the only option among the three validated for under-hood automotive load dump protection without external heatsinking.
Availability
TLD6S11AH is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS camera power systems requiring stable component supply across extended production lifecycles.
Supply support for TLD6S11AH 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 TLD6SxxAH series was developed specifically to meet stringent ISO 7637-2 and AEC-Q101 requirements for high-energy transient suppression in 12V automotive power networks.
FAQ
What is the maximum clamping voltage of the TLD6S11AH under standard test conditions?
The TLD6S11AH has a maximum clamping voltage (VC) of 18.2 V when subjected to a 10/1000 µs peak pulse current of 253 A. This value is measured per IEC 61000-4-5 and ensures downstream components remain within safe operating voltage limits during automotive load dump events. The TLD6S11AH maintains this clamping performance across its full operational temperature range, including at TJ = 175 °C.
Is the TLD6S11AH qualified for automotive use according to industry standards?
Yes, the TLD6S11AH is AEC-Q101 qualified and meets ISO 7637-2 (Pulse 5a load dump), ISO 16750-2 (supply voltage variation), and IEC 61000-4-2 (ESD Level 4) requirements. Its construction, testing, and packaging comply with automotive reliability standards including MSL Level 1 and JESD 201 Class 2 whisker resistance - confirming suitability for under-hood deployment in production vehicles.
What package type does the TLD6S11AH use, and what are its mounting considerations?
The TLD6S11AH uses the DO-218AB surface-mount package, featuring a low-profile, thermally enhanced outline with matte tin-plated leads. Mounting requires adherence to the manufacturer's suggested pad layout to ensure optimal thermal conduction and mechanical reliability. Because the device dissipates up to 4600 W transiently, PCB copper area and thermal vias beneath the cathode/anode pads are critical to maintain RθJC ≈ 0.85 °C/W.
How does the TLD6S11AH compare to other TVS diodes in the TLD6SxxAH family?
The TLD6S11AH is the 11 V stand-off variant in the TLD6S10AH–TLD6S43AH family, with VWM = 11.0 V and VBR = 12.2–13.5 V. All variants share identical DO-218AB packaging, 4600 W peak power rating, AEC-Q101 qualification, and thermal performance. Selection depends solely on system nominal voltage and required clamping margin - e.g., TLD6S11AH targets 12V battery systems, while TLD6S24AH serves 24V commercial vehicle applications.
Does the TLD6S11AH require external heatsinking for automotive load dump protection?
No, the TLD6S11AH does not require external heatsinking when properly mounted on a PCB with adequate copper area and thermal vias, thanks to its low RθJC of 0.85 °C/W and DO-218AB package design. Its 175 °C maximum junction temperature allows full 4600 W pulse capability in typical under-hood ambient conditions (TA ≤ 125 °C), provided board-level thermal design follows Taiwan Semiconductor's recommended layout guidelines.
TLD6S11AH 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):
- 253A
- Power - Peak Pulse:
- 3600W (3.6kW)
- 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
TLD6S11AH FAQ
1.How can I place an order for TLD6S11AH through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD6S11AH 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 TLD6S11AH reliable?
The price and inventory of TLD6S11AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD6S11AH is usually 5 days.
3.What payment methods are accepted for TLD6S11AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD6S11AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD6S11AH?
TLD6S11AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD6S11AH 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 TLD6S11AH?
For technical support, including TLD6S11AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD6S11AH requirements.
6.How does Aetrix verify that TLD6S11AH is sourced from the original manufacturer or authorized distributors?
All TLD6S11AH 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 TLD6S11AH meets industry standards.
7.What is the process for return or replacement of TLD6S11AH?
All TLD6S11AH units undergo pre-shipment inspection (PSI). If there is an issue with TLD6S11AH, 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 TLD6S11AH part is unused and in its original packaging.
Return procedure for TLD6S11AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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