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Taiwan Semiconductor Corporation TLD8S14CAH
- Part No.:
- TLD8S14CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
TLD8S14CAH.pdf
- Description:
- 6600W, 16.4V, 5%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLD8S14CAH from Taiwan Semiconductor is a bidirectional automotive-grade transient voltage suppressor (TVS) in DO-218AB package, rated for 14.0 V working stand-off voltage, 15.6–17.2 V breakdown voltage at 5 mA, 284 A peak impulse current (10/1000 μs), and 6600 W peak pulse power. It delivers robust load dump protection in 12 V/24 V automotive power systems.
For engineers reviewing the TLD8S14CAH datasheet, TLD8S14CAH pinout, TLD8S14CAH application, or TLD8S14CAH equivalent, this device supports AEC-Q101 qualification, ISO 7637-2/16750-2 surge compliance, and high-reliability operation up to TJ = 175 °C in engine control units and body electronics.
Technical Context
The TLD8S14CAH employs junction passivation optimized design technology to sustain repetitive surge stress while maintaining stable clamping performance under high-temperature conditions. Its bidirectional configuration enables symmetrical transient suppression across both polarities without external polarity management.
With RθJC = 0.8 °C/W and thermal capability up to 175 °C, the device supports direct mounting on heatsinked PCB areas in high-power automotive modules. It meets IEC 61000-4-2 Level 4 and ISO 10605 L4 ESD immunity requirements without additional circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14.0 V - Maximum continuous reverse operating voltage before conduction begins; defines system-level stand-off margin in 12 V battery rails. |
| VBR (min/max) | 15.6 V / 17.2 V at 5 mA - Confirmed breakdown threshold ensures predictable turn-on during transients; tight 1.6 V window improves design margin. |
| VC @ IPPM | 23.2 V at 284 A - Clamping voltage limits downstream IC stress during 10/1000 μs surges; <1.65×VWM ratio ensures effective protection. |
| PPPM (10/1000 μs) | 6600 W - Peak power handling capacity validated per ISO 7637-2 Pulse 5a; supports full-load-dump energy absorption without failure. |
| TJ max | 175 °C - Junction temperature rating enables deployment in under-hood ECUs with minimal derating at ambient >125 °C. |
| αT | 0.078 %/°C - Temperature coefficient of VBR allows accurate clamping voltage prediction across -55 °C to +175 °C operating range. |
Pinout & Package
Package: DO-218AB molded plastic case per JEDEC standard; matte tin-plated leads; polarity indicated by cathode band; weight ≈ 2.691 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path (bidirectional) | Accepts positive or negative surge current; symmetric conduction enables dual-polarity clamping without polarity awareness. |
| Cathode | Transient current sink (bidirectional) | Paired with anode to form low-impedance clamp loop; cathode band marking identifies terminal orientation on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test requirements including HTOL, TC, UHAST, and mechanical shock - eliminates qualification overhead for Tier 1 suppliers. |
| DO-218AB package | High thermal efficiency (RθJC = 0.8 °C/W) and 6600 W surge rating in surface-mount form - replaces bulky through-hole TVS diodes without sacrificing power handling. |
| ISO 7637-2 & ISO 16750-2 compliant | Passes Pulse 5a (load dump) and Pulse 1/2a/3a tests under specified coupling networks - reduces need for external filtering in power supply inputs. |
| 175 °C junction rating | Enables uninterrupted operation in high-ambient environments such as engine compartments - avoids thermal shutdown or parameter drift in critical control modules. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) CAN Bus Interface |
|---|---|
Use Scenario: Protects 12 V power rail against alternator load dump surges (ISO 7637-2 Pulse 5a) and coupled transients from solenoid switching. IC Role / Device Role: Primary overvoltage clamp placed upstream of DC/DC converters and microcontroller power supplies. Use Value: Limits input voltage to ≤23.2 V during 6600 W transients, preventing damage to 3.3 V/5 V regulators and MCU I/O structures. | Use Scenario: Shields high-speed CAN FD transceivers from ESD events (IEC 61000-4-2 Level 4) and board-level coupling noise. IC Role / Device Role: Bidirectional TVS placed across CAN_H/CAN_L differential pair near connector entry point. Use Value: Clamps ±23.2 V transients within 1 ns response time, preserving signal integrity and meeting ISO 11898-2 EMC requirements. |
| ADAS Camera Power Supply | Electric Power Steering (EPS) Motor Driver |
Use Scenario: Guards image sensor and ISP power lines against ignition-induced spikes and hot-swap transients in rear-view camera modules. IC Role / Device Role: Standoff-rated protector on 5 V or 3.3 V rail feeding CMOS image sensors and SerDes interfaces. Use Value: Maintains 14.0 V stand-off while delivering 284 A surge current capacity - prevents latch-up or pixel corruption during vehicle start-stop cycles. | Use Scenario: Absorbs inductive kickback from H-bridge MOSFETs during motor commutation and fault shutdown in 24 V EPS systems. IC Role / Device Role: High-energy TVS connected between motor supply rail and ground, adjacent to gate driver ICs. Use Value: Handles 5200 W (10/10000 μs) surges without degradation - extends reliability of isolated gate drivers and current sense amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14CA | Lower PPPM (400 W), SMA package, RθJC ≈ 50 °C/W, VC = 23.2 V at 17.3 A | Not suitable for load dump; limited to ESD and low-energy transients in non-automotive consumer gear | Select only for cost-sensitive, low-power applications where ISO 7637-2 compliance is not required. |
| SMCJ14CA | Same DO-214AB package, PPPM = 1500 W, VC = 23.2 V at 64.5 A, no AEC-Q101 certification | Lacks automotive qualification and thermal margin for under-hood deployment; requires derating above 85 °C ambient | Acceptable for industrial control panels but not for OEM automotive designs requiring AEC-Q101 traceability. |
Compared with SMAJ14CA and SMCJ14CA, the TLD8S14CAH provides 4.4× higher peak power handling, AEC-Q101 validation, and superior thermal resistance - making it the only option qualified for direct integration into automotive power distribution networks subject to load dump stress.
Availability
TLD8S14CAH is available at Aetrix Electronics and suitable for automotive ECU power protection, ADAS camera module surge suppression, and electric power steering motor driver circuits requiring stable component supply across extended production lifecycles.
Supply support for TLD8S14CAH 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 since 1979.
The TLD8SxxCAH series was developed specifically for AEC-Q101-compliant transient suppression in 12 V/24 V automotive power systems, targeting high-energy load dump and ISO 16750-2 surge immunity without thermal compromise.
FAQ
What is the maximum clamping voltage of the TLD8S14CAH during a 10/1000 μs surge?
The TLD8S14CAH has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated peak impulse current of 284 A under the 10/1000 μs waveform. This value is measured per JEDEC standards and confirmed in the official TSC datasheet revision E2310. The clamping performance remains stable across the full operating temperature range from −55 °C to +175 °C.
Is the TLD8S14CAH unidirectional or bidirectional?
The TLD8S14CAH is a bidirectional TVS diode, as indicated by the "CA" suffix in its part number and confirmed in the bi-directional electrical specifications table of the TSC datasheet. It provides symmetrical transient suppression for both positive- and negative-going voltage excursions, eliminating the need for polarity-aware placement in differential or AC-coupled circuits like CAN bus interfaces.
Does the TLD8S14CAH meet AEC-Q101 reliability requirements?
Yes, the TLD8S14CAH is explicitly AEC-Q101 qualified, as stated in the FEATURES section of the TSC datasheet. It has undergone stress testing including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and mechanical shock - all required for automotive semiconductor component qualification.
What is the thermal resistance from junction to case (RθJC) for the TLD8S14CAH?
The TLD8S14CAH has a typical junction-to-case thermal resistance (RθJC) of 0.8 °C/W, as specified in the THERMAL PERFORMANCE section of the TSC datasheet. This value assumes ideal heatsink contact and enables efficient heat transfer from the silicon die to the PCB copper pour or external heatsink, supporting sustained operation at TJ = 175 °C.
Which international surge immunity standards does the TLD8S14CAH comply with?
The TLD8S14CAH complies with ISO 7637-2 (Pulse 5a load dump), ISO 16750-2 (electrical loads), IEC 61000-4-2 Level 4 (ESD), and ISO 10605 Level L4 (vehicle ESD). Compliance is verified under defined test conditions and referenced in the FEATURES and ELECTRICAL SPECIFICATIONS sections of the TSC datasheet revision E2310.
TLD8S14CAH 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 284A
- Power - Peak Pulse:
- 6600W (6.6kW)
- 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
TLD8S14CAH FAQ
1.How can I place an order for TLD8S14CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD8S14CAH 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 TLD8S14CAH reliable?
The price and inventory of TLD8S14CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD8S14CAH is usually 5 days.
3.What payment methods are accepted for TLD8S14CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD8S14CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD8S14CAH?
TLD8S14CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD8S14CAH 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 TLD8S14CAH?
For technical support, including TLD8S14CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD8S14CAH requirements.
6.How does Aetrix verify that TLD8S14CAH is sourced from the original manufacturer or authorized distributors?
All TLD8S14CAH 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 TLD8S14CAH meets industry standards.
7.What is the process for return or replacement of TLD8S14CAH?
All TLD8S14CAH units undergo pre-shipment inspection (PSI). If there is an issue with TLD8S14CAH, 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 TLD8S14CAH part is unused and in its original packaging.
Return procedure for TLD8S14CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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