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Taiwan Semiconductor Corporation TLD5S10AH
- Part No.:
- TLD5S10AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
TLD5S10AH.pdf
- Description:
- TVS DIODE 10VWM 17VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,409
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Product details
Overview
TLD5S10AH 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 10 V working stand-off voltage (VWM), 11.1–12.3 V breakdown voltage (VBR) at 5 mA, 3600 W peak pulse power (10/1000 µs), 175 °C maximum junction temperature, and DO-218AB package - enabling robust clamping in ISO 7637-2-compliant vehicle power networks.
For engineers reviewing the TLD5S10AH datasheet, TLD5S10AH pinout, TLD5S10AH application, or TLD5S10AH equivalent, key selection criteria include its 10 V VWM rating, 17.0 V clamping voltage at 212 A IPPM, AEC-Q101 qualification, unidirectional polarity, and DO-218AB thermal performance with RθJC = 0.9 °C/W - all critical for high-reliability automotive power rail protection.
Technical Context
The TLD5S10AH operates as a unidirectional avalanche diode optimized for fast-response transient suppression in automotive 12V battery-fed circuits. Its junction passivation design supports continuous operation up to TJ = 175 °C and meets ISO 7637-2 load dump and ISO 10605 ESD immunity requirements.
It delivers 3600 W non-repetitive peak pulse power under 10/1000 µs waveform and 2800 W under 10/10000 µs, with 17.0 V clamping voltage at 212 A peak current. The device exhibits 0.069 %/°C temperature coefficient of VBR and <15 µA blocking leakage at VWM (25 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins; defines system compatibility with 12V nominal automotive rails. |
| VBR (min/max) | 11.1 / 12.3 V at 5 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 17.0 V at 212 A (10/1000 µs) - Clamping voltage limits downstream IC stress during load dump events per ISO 7637-2. |
| PPPM (10/1000 µs) | 3600 W - Peak surge energy handling capacity; sustains single high-energy pulses typical of alternator load dump. |
| RθJC | 0.9 °C/W - Junction-to-case thermal resistance with ideal heatsink; enables thermal design for sustained 5 W steady-state dissipation. |
| TJ max | 175 °C - Maximum junction temperature rating; supports under-hood deployment in AEC-Q101-qualified automotive modules. |
| Polarity | Unidirectional - Blocks reverse voltage only; suited for DC power line protection where polarity is fixed. |
Pinout & Package
Package: DO-218AB - Surface-mount, molded plastic case rated UL 94V-0, matte tin-plated leads, unidirectional polarity, 2.677 g weight, JESD201 Class 2 whisker compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | High-side transient clamp node | Connected to protected power rail (e.g., battery+); conducts surge current to ground when V > VBR. |
| Anode | Reference/ground return path | Connected to chassis or system ground; completes clamping loop with low-inductance layout for effective 10/1000 µs response. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive under-hood applications including temperature cycling, humidity, and mechanical shock. |
| Junction passivation technology | Enables stable VBR and low leakage (<15 µA) across -55 °C to +175 °C operating range. |
| ISO 7637-2 & ISO 16750-2 compliance | Guarantees survivability against 12V system load dump pulses (up to 35 V, 400 ms) without degradation. |
| IEC 61000-4-2 Level 4 / ISO 10605 L4 | Withstands ±15 kV air discharge and ±8 kV contact discharge ESD events without parametric shift. |
| DO-218AB thermal performance | RθJC = 0.9 °C/W allows efficient heat transfer to PCB copper or external heatsink for high-power pulse handling. |
Applications
| Automotive Body Control Module (BCM) | Engine Control Unit (ECU) Power Input |
|---|---|
Use Scenario: Protecting 12V supply input of BCM against alternator load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery+ and ground, clamping transients within 1 ns. Use Value: Limits voltage to ≤17.0 V during 3600 W pulses, preventing damage to MCU, CAN transceivers, and power management ICs. | Use Scenario: Safeguarding ECU main power rail from ISO 7637-2 Pulse 5a/b load dump events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on fused battery feed, mounted near connector for minimal trace inductance. Use Value: Maintains system uptime by absorbing 10/1000 µs surges up to 212 A while holding clamping voltage below IC absolute maximum ratings. |
| ADAS Camera Power Supply | Infotainment Head Unit DC-DC Input |
Use Scenario: Shielding 12V-to-3.3V buck converter input in rear-view camera modules exposed to vehicle battery fluctuations. IC Role / Device Role / Timing Role: Fast-acting TVS suppressing transients before they reach sensitive imaging sensor and serializer ICs. Use Value: Prevents image corruption or reset events by clamping spikes to 17.0 V with sub-1 ns response time and <15 µA leakage at 10 V. | Use Scenario: Securing 12V input stage of infotainment head unit DC-DC converters during cold-crank and load dump conditions. IC Role / Device Role / Timing Role: High-power unidirectional clamp integrated into front-end protection circuit with fuse and reverse-polarity MOSFET. Use Value: Enables compliance with OEM EMC specifications (ISO 11452-2/4) by limiting conducted surges to safe levels for downstream PMICs and SoCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ10A | Lower PPPM (400 W), SMA package (RθJC ≈ 40 °C/W), VBR = 11.1–12.3 V same range but lower surge margin. | Not AEC-Q101 qualified; limited to industrial/commercial use; insufficient for ISO 7637-2 Pulse 5. | Select only for cost-sensitive non-automotive designs with <500 W surge exposure. |
| SMCJ10A | Same DO-214AB package, 1500 W PPPM (10/1000 µs), VBR = 11.1–12.3 V, RθJC ≈ 10 °C/W - less thermally efficient than DO-218AB. | AEC-Q101 qualified but lacks ISO 7637-2 validation; lower clamping voltage (16.7 V) but inadequate for full load dump duty cycle. | Acceptable for auxiliary automotive subsystems with derated surge exposure; not recommended for main battery rail. |
Compared with SMAJ10A and SMCJ10A, the TLD5S10AH provides 2.4× higher peak power (3600 W vs. 1500 W), superior thermal resistance (0.9 °C/W vs. ~10 °C/W), and explicit ISO 7637-2/16750-2 validation - making it the only option qualified for primary 12V load dump protection in modern automotive ECUs.
Availability
TLD5S10AH is available at Aetrix Electronics and suitable for automotive body control modules, engine control units, ADAS camera power supplies, and infotainment head unit DC-DC inputs requiring stable component supply across production lifecycles.
Supply support for TLD5S10AH 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 rectifiers with global automotive qualification capabilities.
The TLD5S series is engineered specifically for high-energy automotive transient suppression, targeting ISO 7637-2 load dump and ISO 10605 ESD compliance in under-hood and cabin electronics.
FAQ
What is the clamping voltage of the TLD5S10AH at its rated peak pulse current?
The TLD5S10AH has a maximum clamping voltage (VC) of 17.0 V at 212 A peak pulse current (IPPM) under 10/1000 µs waveform. This value is measured per IEC 61000-4-5 test conditions and ensures downstream components remain within safe operating voltage limits during automotive load dump events. The TLD5S10AH maintains this clamping performance across its full operating temperature range.
Is the TLD5S10AH qualified for automotive applications?
Yes, the TLD5S10AH is AEC-Q101 qualified and explicitly validated for automotive use, including compliance with ISO 7637-2 (load dump), ISO 16750-2 (electrical loads), and ISO 10605 (ESD). Its 175 °C junction rating, moisture sensitivity level 1, and JESD201 Class 2 whisker resistance confirm suitability for under-hood deployment. The TLD5S10AH meets OEM-level reliability requirements for power rail protection.
What package does the TLD5S10AH use, and why is it significant?
The TLD5S10AH uses the DO-218AB surface-mount package, which provides superior thermal performance (RθJC = 0.9 °C/W) compared to standard SMA or SMC packages. This enables efficient heat dissipation during high-energy transients like 3600 W load dump pulses. The DO-218AB also supports high-current surge handling (500 A IFSM) and meets UL 94V-0 flammability standards - critical for automotive safety certification.
How does the TLD5S10AH differ from other 10 V TVS diodes like SMAJ10A?
The TLD5S10AH differs from SMAJ10A in peak pulse power (3600 W vs. 400 W), thermal resistance (0.9 °C/W vs. ~40 °C/W), AEC-Q101 qualification, and ISO 7637-2 validation. SMAJ10A uses an SMA package and lacks automotive-grade reliability testing. The TLD5S10AH's DO-218AB construction and junction passivation enable stable operation at 175 °C - a capability SMAJ10A does not support. These differences make the TLD5S10AH appropriate for primary automotive power rail protection where SMAJ10A is not.
What is the polarity configuration of the TLD5S10AH, and how does it affect circuit placement?
The TLD5S10AH is a unidirectional TVS diode, meaning it conducts only in reverse bias above VBR and blocks forward voltage up to 2 V at 100 A. This configuration requires correct orientation: cathode to the protected power rail (e.g., battery+) and anode to ground. Incorrect polarity prevents clamping action. The TLD5S10AH's marking code "TLD5S10A" and cathode band identify terminal assignment, ensuring proper integration into 12V DC systems with fixed polarity.
TLD5S10AH 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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 212A
- 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
TLD5S10AH FAQ
1.How can I place an order for TLD5S10AH through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD5S10AH 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 TLD5S10AH reliable?
The price and inventory of TLD5S10AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD5S10AH is usually 5 days.
3.What payment methods are accepted for TLD5S10AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD5S10AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD5S10AH?
TLD5S10AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD5S10AH 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 TLD5S10AH?
For technical support, including TLD5S10AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD5S10AH requirements.
6.How does Aetrix verify that TLD5S10AH is sourced from the original manufacturer or authorized distributors?
All TLD5S10AH 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 TLD5S10AH meets industry standards.
7.What is the process for return or replacement of TLD5S10AH?
All TLD5S10AH units undergo pre-shipment inspection (PSI). If there is an issue with TLD5S10AH, 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 TLD5S10AH part is unused and in its original packaging.
Return procedure for TLD5S10AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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