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Taiwan Semiconductor Corporation TLD5S17AH
- Part No.:
- TLD5S17AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
TLD5S17AH.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,989
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Product details
Overview
TLD5S17AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-218AB package, rated for 17.0 V working stand-off voltage, 18.9–20.9 V breakdown voltage at 5 mA, and 3600 W peak pulse power (10/1000 µs), designed for automotive load dump surge protection in engine control units and body electronics.
For engineers reviewing the TLD5S17AH datasheet, TLD5S17AH pinout, TLD5S17AH application, or TLD5S17AH equivalent, key selection criteria include clamping voltage (27.6 V at 130 A), junction temperature capability (−55 °C to +175 °C), AEC-Q101 qualification, ISO 7637-2 compliance, and DO-218AB thermal performance (RθJC = 0.9 °C/W).
Technical Context
The TLD5S17AH implements a single-die, unidirectional silicon avalanche structure optimized for high-energy transients. Its junction passivation design enables stable operation up to 175 °C and meets stringent automotive surge standards including ISO 16750-2 and IEC 61000-4-2 Level 4.
It delivers 27.6 V clamping voltage at 130 A (10/1000 µs), with 0.082 %/°C temperature coefficient of VBR, enabling predictable overvoltage response across automotive ambient ranges. The DO-218AB package supports high thermal dissipation via low RθJC and UL 94V-0 molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17.0 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 18.9–20.9 V at 5 mA - Ensures reliable triggering above system nominal voltage with margin |
| VC @ IPPM | 27.6 V at 130 A (10/1000 µs) - Limits downstream IC voltage during load dump events |
| PPPM | 3600 W (10/1000 µs) - Withstands automotive load dump surges per ISO 7637-2 Pulse 5a |
| TJ max | +175 °C - Enables placement near high-temperature engine bay components without derating |
| RθJC | 0.9 °C/W - Allows effective heatsinking to PCB copper or chassis for sustained surge handling |
| IR @ VWM | ≤10 µA at 25 °C - Minimizes standby leakage in always-on vehicle networks |
Pinout & Package
Package: DO-218AB - Surface-mount, unidirectional, single-anode/single-cathode configuration with matte tin-plated leads (J-STD-002 compliant), UL 94V-0 molding, and polarity marking (cathode band). Weight: 2.677 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path during clamping |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V battery rail); conducts when VIN exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood use with temperature cycling, HTRB, and surge stress testing |
| Junction passivation technology | Ensures long-term stability of VBR and leakage under high-humidity, high-TJ conditions |
| ISO 7637-2 & ISO 16750-2 compliance | Guarantees robustness against real-world automotive load dump and supply interruption transients |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking or special handling prior to assembly |
| Uni-directional configuration | Provides precise clamping only on positive transients, avoiding interference with DC bias or signal integrity |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) Battery Rail Protection |
|---|---|
Use Scenario: Protects microcontroller power rails from 12 V battery line transients during alternator load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: TVS diode placed between battery input and DC-DC converter input to clamp surge energy before regulation stage. Use Value: Limits clamped voltage to 27.6 V, preventing damage to 36 V-rated input stages and maintaining system uptime during cold cranking recovery. | Use Scenario: Shields LIN bus transceivers and power management ICs from coupled transients on shared 12 V supply in door modules and lighting controllers. IC Role / Device Role / Timing Role: Primary surge suppression device on main BCM power entry, upstream of local LDOs and CAN/LIN PHYs. Use Value: Delivers 3600 W peak power handling with <10 µA leakage at 17 V, preserving sleep-mode current budget while surviving repeated surges. |
| Advanced Driver Assistance Systems (ADAS) Camera Power Supply | Electric Power Steering (EPS) Motor Driver Protection |
Use Scenario: Guards image sensor and ISP power inputs against ignition-induced spikes and battery reversal transients in front/rear-view cameras. IC Role / Device Role / Timing Role: Unidirectional TVS on 5 V or 3.3 V regulated rail output, selected for low capacitance and fast response (<1 ns). Use Value: Clamps within nanoseconds at 27.6 V, preventing latch-up or pixel corruption in CMOS image sensors during ESD or load dump coupling. | Use Scenario: Safeguards gate drivers and MCU I/O from inductive kickback and battery surge during EPS motor commutation and fault shutdown. IC Role / Device Role / Timing Role: High-power TVS on 12 V auxiliary rail feeding motor driver ICs and current sense amplifiers. Use Value: Handles 500 A non-repetitive forward surge (IFSM) and maintains ≤10 µA leakage at 17 V, ensuring signal integrity during torque-demand transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17A | Lower PPPM (400 W), SMA package, RθJC ≈ 50 °C/W, VC = 27.6 V at 11.3 A | Not suitable for ISO 7637-2 load dump; limited to lower-energy ESD/surge events | Select only for non-automotive or secondary-level protection where 3600 W capability is unnecessary |
| SMCJ17A | Same VWM/VC, but PPPM = 1500 W (10/1000 µs), DO-214AB package, RθJC ≈ 3.5 °C/W | Lacks AEC-Q101 qualification and fails ISO 7637-2 Pulse 5a without external derating | Acceptable for industrial 12 V systems with controlled surge profiles, but not for automotive OEM designs |
Compared with SMAJ17A and SMCJ17A, the TLD5S17AH provides 2.4× and 2.4× higher peak pulse power respectively, validated AEC-Q101 reliability, and superior thermal resistance-making it the only option qualified for primary load dump protection in automotive ECUs and ADAS modules.
Availability
TLD5S17AH is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS camera power supplies requiring stable component supply, AEC-Q101 compliance, and ISO 7637-2 surge immunity.
Supply support for TLD5S17AH 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 Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, and automotive-qualified components with global distribution and AEC-Q certified production lines.
The TLD5SxxAH series was developed specifically for high-reliability automotive transient suppression, targeting ISO 7637-2 load dump and ISO 16750-2 supply surge requirements in under-hood and chassis-mounted electronic control units.
FAQ
What is the maximum clamping voltage of the TLD5S17AH under standard test conditions?
The TLD5S17AH has a maximum clamping voltage (VC) of 27.6 V when subjected to a 10/1000 µs peak pulse current of 130 A. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during surge events. The TLD5S17AH maintains this clamping performance across its full operating temperature range due to its low VBR temperature coefficient (0.082 %/°C).
Is the TLD5S17AH qualified for automotive applications per AEC-Q101?
Yes, the TLD5S17AH is fully AEC-Q101 qualified. It undergoes rigorous stress testing-including high-temperature reverse bias, temperature cycling, and surge endurance-to ensure reliability in automotive under-hood environments. This qualification is explicitly documented in Taiwan Semiconductor's D2103 datasheet revision and applies to the exact TLD5S17AH part number in DO-218AB packaging.
What is the thermal resistance from junction to case (RθJC) for the TLD5S17AH?
The TLD5S17AH has a typical junction-to-case thermal resistance (RθJC) of 0.9 °C/W, measured with an ideal heatsink. This low value enables efficient heat transfer from the silicon die to the PCB copper pour or metal chassis, supporting sustained surge handling and extended lifetime in high-temperature automotive applications such as engine control units.
Does the TLD5S17AH meet ISO 7637-2 and ISO 16750-2 surge standards?
Yes, the TLD5S17AH meets both ISO 7637-2 (Pulse 5a load dump) and ISO 16750-2 surge specifications under defined test conditions. Its 3600 W peak pulse power rating and 27.6 V clamping voltage are validated for these standards, making it suitable for primary protection in automotive power networks where compliance is mandatory for OEM acceptance.
What is the polarity configuration and marking convention for the TLD5S17AH?
The TLD5S17AH is a unidirectional TVS diode with cathode indicated by a band on the DO-218AB package body. The marking code "TLD5S17A" appears adjacent to the cathode band, and the date code and factory identifier follow per TSC's standard DO-218AB marking diagram. This polarity ensures conduction only during positive transients on the cathode-connected line.
TLD5S17AH 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 130A
- 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
TLD5S17AH FAQ
1.How can I place an order for TLD5S17AH through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD5S17AH 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 TLD5S17AH reliable?
The price and inventory of TLD5S17AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD5S17AH is usually 5 days.
3.What payment methods are accepted for TLD5S17AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD5S17AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD5S17AH?
TLD5S17AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD5S17AH 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 TLD5S17AH?
For technical support, including TLD5S17AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD5S17AH requirements.
6.How does Aetrix verify that TLD5S17AH is sourced from the original manufacturer or authorized distributors?
All TLD5S17AH 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 TLD5S17AH meets industry standards.
7.What is the process for return or replacement of TLD5S17AH?
All TLD5S17AH units undergo pre-shipment inspection (PSI). If there is an issue with TLD5S17AH, 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 TLD5S17AH part is unused and in its original packaging.
Return procedure for TLD5S17AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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