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Taiwan Semiconductor Corporation TLD6S24AH
- Part No.:
- TLD6S24AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
TLD6S24AH.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,450
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Product details
Overview
TLD6S24AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for automotive load dump surge protection in 24V systems, with a working stand-off voltage of 24.0 V, breakdown voltage range 26.7–29.5 V at 5.0 mA, clamping voltage of 38.9 V at 118 A (10/1000 μs), and peak pulse power rating of 4600 W. It is AEC-Q101 qualified, rated for TJ = 175 °C, and housed in DO-218AB package.
For engineers reviewing the TLD6S24AH datasheet, TLD6S24AH pinout, TLD6S24AH application, or TLD6S24AH equivalent, key selection criteria include its 24V system compatibility, ISO 7637-2/ISO 16750-2 compliance, unidirectional polarity, 0.85 °C/W junction-to-case thermal resistance, and 10 µA max leakage at VWM - critical for low-power automotive electronics and battery-connected modules.
Technical Context
The TLD6S24AH implements a silicon avalanche diode structure optimized for high-energy transient suppression in automotive power networks. Its unidirectional configuration enables robust reverse-biased clamping during load dump events, while junction passivation ensures stable performance up to 175 °C junction temperature.
It meets ISO 7637-2 Pulse 5a/b (load dump) and ISO 16750-2 supply voltage variation requirements, with verified clamping behavior under 10/1000 μs and 10/10000 μs waveforms. Thermal design relies on low RθJC (0.85 °C/W) and DO-218AB's copper strap construction for efficient heat transfer to PCB copper planes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24.0 V - Maximum continuous reverse operating voltage before conduction; defines safe operating margin in 24V automotive systems. |
| VBR (min/max) | 26.7 V / 29.5 V at 5.0 mA - Confirmed breakdown threshold range; ensures reliable triggering above nominal bus voltage. |
| VC @ IPPM | 38.9 V at 118 A (10/1000 μs) - Clamping voltage limits downstream IC stress during worst-case transients. |
| PPPM (10/1000 μs) | 4600 W - Peak surge power handling capacity; supports full ISO 7637-2 Pulse 5a (35 V, 100 ms) energy absorption. |
| RθJC | 0.85 °C/W - Enables effective thermal coupling to heatsinked PCB copper; critical for sustained surge duty cycles. |
| IR @ VWM | ≤10 µA at 24.0 V - Low leakage preserves battery drain budget in always-on vehicle modules. |
| αT | 0.087 %/°C - Temperature coefficient of VBR; allows accurate clamping voltage prediction across -55 °C to +175 °C. |
Pinout & Package
Package: DO-218AB - Surface-mount, unidirectional, single-die TVS in thermally enhanced molded case with matte tin-plated leads (J-STD-002 compliant), UL 94V-0 rated molding compound, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Transient clamp output node | Connected to protected line (e.g., battery rail); conducts during overvoltage to shunt current to ground. |
| Anode | Reference/return path | Connected to system ground; completes clamping path; polarity must match circuit layout to avoid forward conduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive underhood environments including temperature cycling, humidity, and mechanical shock. |
| Junction passivation technology | Stable VBR and low leakage over lifetime, even after repeated surge exposure at 175 °C. |
| DO-218AB thermal performance | 0.85 °C/W RθJC enables >3× higher power dissipation vs. standard SMA packages at same footprint. |
| ISO 7637-2 & ISO 16750-2 compliance | Tested to meet Pulse 5a (load dump) and supply voltage variation requirements without external filtering. |
| Uni-directional configuration | Prevents unintended forward conduction during normal 24V operation while enabling precise reverse-clamp response. |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) Battery Interface |
|---|---|
Use Scenario: Protects ECU 24V input against alternator load dump surges up to 35 V, 100 ms duration per ISO 7637-2. IC Role / Device Role / Timing Role: Primary clamping device placed directly at connector entry point to limit voltage seen by DC-DC converters and microcontrollers. Use Value: Clamps to ≤38.9 V at 118 A, preventing damage to downstream 40V-rated regulators and ensuring uninterrupted MCU operation. | Use Scenario: Shields BCM power rail from battery-side transients during jump-start, cranking, and load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery feed and main power switch; absorbs energy before it reaches LDOs and CAN transceivers. Use Value: 4600 W peak power rating handles full ISO 16750-2 severity level III surges without degradation over 100,000 cycles. |
| ADAS Camera Power Supply Protection | Electric Power Steering (EPS) Motor Driver Stage |
Use Scenario: Secures 24V input to image sensor SoCs and ISP processors in front-facing ADAS cameras exposed to harsh electrical environments. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of buck converter; reduces need for secondary RC filtering. Use Value: 10 µA max leakage at 24 V prevents standby current increase in always-on camera modules meeting OEM quiescent current specs. | Use Scenario: Guards gate driver ICs and MOSFETs in EPS motor control H-bridges against inductive kickback and battery reversal transients. IC Role / Device Role / Timing Role: High-current clamping element mounted near motor driver IC; routes surge current away from sensitive logic inputs. Use Value: 600 A peak forward surge rating (IFSM) withstands repetitive motor stall currents without bond wire failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Lower PPPM (400 W), SMA package, RθJC ≈ 50 °C/W, VC = 38.9 V @ 10.3 A | Not suitable for ISO 7637-2 Pulse 5; limited to lower-energy transients in non-automotive or 12V systems. | Select only if surge energy is <10% of TLD6S24AH's capability and thermal constraints allow higher junction rise. |
| SMCJ24A | Higher PPPM (1500 W), SMC package, RθJC ≈ 10 °C/W, VC = 38.9 V @ 38.9 A | Meets ISO 7637-2 Pulse 5b but not 5a; insufficient for full 35 V/100 ms load dump in 24V architectures. | Acceptable for cost-sensitive industrial 24V systems where full automotive qualification is not required. |
Compared with SMAJ24A and SMCJ24A, the TLD6S24AH delivers 3× and 3.1× higher peak power handling respectively, combined with AEC-Q101 qualification, 175 °C operation, and DO-218AB's superior thermal interface - making it the only option validated for full automotive load dump compliance in production ECUs and ADAS modules.
Availability
TLD6S24AH is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera power supplies, and electric power steering systems requiring stable component supply across long production lifecycles.
Supply support for TLD6S24AH 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in high-reliability power devices and protection components.
The TLD6S series was developed specifically for automotive-grade transient suppression, targeting ISO 7637-2 and ISO 16750-2 compliance in 12V and 24V vehicle platforms with extended temperature and lifetime requirements.
FAQ
What is the maximum clamping voltage of the TLD6S24AH under standard test conditions?
The TLD6S24AH has a maximum clamping voltage (VC) of 38.9 V when subjected to a 10/1000 μs peak pulse current of 118 A. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuits during worst-case transients. The TLD6S24AH maintains this clamping performance across its full operating temperature range, supporting robust design margins in automotive power systems.
Is the TLD6S24AH qualified for automotive use according to industry standards?
Yes, the TLD6S24AH is AEC-Q101 qualified and explicitly tested to meet ISO 7637-2 (Pulse 5a/b load dump) and ISO 16750-2 (supply voltage variation) requirements. Its 175 °C maximum junction temperature rating, junction passivation, and moisture sensitivity level 1 classification confirm suitability for underhood automotive applications. The TLD6S24AH is not intended for medical or life-sustaining systems.
What package type does the TLD6S24AH use, and what are its thermal advantages?
The TLD6S24AH uses the DO-218AB surface-mount package, featuring a copper strap construction that achieves a junction-to-case thermal resistance (RθJC) of 0.85 °C/W with an ideal heatsink. This is approximately 6× better than standard SMA packages and enables efficient heat transfer to PCB copper planes - essential for sustaining multiple high-energy surges without thermal runaway in automotive modules.
How does the TLD6S24AH differ from the TLD6S24A variant listed in the same family?
The TLD6S24AH includes the "H" suffix denoting halogen-free compliance per IEC 61249-2-21 and RoHS compliance, whereas TLD6S24A lacks this designation. Both share identical electrical parameters, DO-218AB packaging, and AEC-Q101 qualification. The "H" version is required for automotive OEMs mandating halogen-free materials in final assemblies; TLD6S24AH is the production-grade, environmentally compliant variant.
Can the TLD6S24AH be used in 12V automotive systems, or is it strictly for 24V applications?
The TLD6S24AH is optimized for 24V nominal systems due to its 24.0 V working stand-off voltage (VWM) and 26.7–29.5 V breakdown range. Using it in 12V systems risks premature conduction during normal operation (e.g., cold-crank dips or ripple), increasing leakage and thermal stress. For 12V applications, TLD6S12AH or TLD6S14AH are appropriate alternatives with matched VWM ratings.
TLD6S24AH 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 118A
- 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
TLD6S24AH FAQ
1.How can I place an order for TLD6S24AH through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD6S24AH 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 TLD6S24AH reliable?
The price and inventory of TLD6S24AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD6S24AH is usually 5 days.
3.What payment methods are accepted for TLD6S24AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD6S24AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD6S24AH?
TLD6S24AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD6S24AH 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 TLD6S24AH?
For technical support, including TLD6S24AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD6S24AH requirements.
6.How does Aetrix verify that TLD6S24AH is sourced from the original manufacturer or authorized distributors?
All TLD6S24AH 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 TLD6S24AH meets industry standards.
7.What is the process for return or replacement of TLD6S24AH?
All TLD6S24AH units undergo pre-shipment inspection (PSI). If there is an issue with TLD6S24AH, 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 TLD6S24AH part is unused and in its original packaging.
Return procedure for TLD6S24AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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