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Taiwan Semiconductor Corporation TLD8S16CAH
- Part No.:
- TLD8S16CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
TLD8S16CAH.pdf
- Description:
- 6600W, 18.75V, 5%, BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TLD8S16CAH from Taiwan Semiconductor is a bidirectional automotive-grade transient voltage suppressor (TVS) in DO-218AB package, with 16.0 V working stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR), 254 A peak impulse current (IPPM), and 26.0 V clamping voltage (VC) at IPPM - designed for load dump surge protection in 12 V/24 V automotive power systems.
For engineers reviewing the TLD8S16CAH datasheet, TLD8S16CAH pinout, TLD8S16CAH application, or TLD8S16CAH equivalent, key selection criteria include bidirectional polarity, ISO 7637-2/16750-2 compliance, 6600 W 10/1000 µs surge rating, TJ = 175 °C operation, and DO-218AB thermal performance (RθJC = 0.8 °C/W).
Technical Context
The TLD8S16CAH implements a silicon avalanche diode structure optimized for high-energy transients, featuring junction passivation for stable VBR over temperature and life cycle reliability. Its bidirectional configuration enables symmetrical clamping across both polarities without external circuitry.
It meets ISO 7637-2 Pulse 5a/b (load dump) and ISO 16750-2 supply voltage variation requirements under automotive ambient conditions, with validated performance up to TJ = 175 °C and moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16.0 V - Maximum continuous reverse operating voltage before significant leakage; sets system overvoltage trip threshold in 12 V automotive rails. |
| VBR (min/max) | 17.8 V / 19.7 V at IT = 5 mA - Confirmed avalanche onset range; ensures predictable turn-on during surges without premature conduction. |
| VC @ IPPM | 26.0 V at 254 A (10/1000 µs) - Clamped voltage seen by protected ICs; limits downstream stress below 28 V absolute max ratings. |
| PPPM (10/1000 µs) | 6600 W - Peak pulse power handling; supports full ISO 7637-2 load dump energy (≥ 100 V, 100 ms) with margin. |
| TJ max | 175 °C - Enables under-hood placement near ECUs or power modules without derating concerns in high-ambient environments. |
| RθJC | 0.8 °C/W - Low thermal resistance to heatsink; allows >8 W steady-state dissipation with minimal case-to-junction delta-T. |
Pinout & Package
DO-218AB surface-mount package: molded plastic body (UL 94V-0), matte tin-plated leads, polarity marked by cathode band, weight ≈ 2.691 g. Designed for high-current PCB trace routing and mechanical robustness in automotive vibration environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during negative transients | Connected to ground or low-side reference; completes bidirectional clamping path for reverse-polarity surges. |
| Cathode | Current entry point during positive transients | Connected to protected line (e.g., battery rail); provides clamping to ground when voltage exceeds VWM in either direction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test requirements including HTOL, TC, UHAST, and ESD - eliminates qualification overhead for Tier 1 designs. |
| Bidirectional operation | Single-device protection against both positive and negative transients - reduces BOM count vs. dual-unidirectional TVS solutions. |
| ISO 7637-2 & ISO 16750-2 compliance | Tested to Pulse 5a (12 V systems) and Pulse 5b (24 V systems) waveforms - ensures immunity to alternator load dump without external filtering. |
| Junction passivation | Stable VBR drift ≤ ±5 % over 1000 hrs HTOL at 175 °C - maintains clamping accuracy across vehicle lifetime. |
Applications
| Engine Control Unit (ECU) Power Input | Body Control Module (BCM) Battery Rail |
|---|---|
Use Scenario: Protects microcontroller, CAN transceivers, and analog sensors from alternator load dump events during ignition cycling. IC Role / Device Role / Timing Role: Bidirectional TVS clamp on main 12 V supply input, placed upstream of DC/DC converters and LDOs. Use Value: Limits transient voltage to ≤26.0 V during 6600 W surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic devices. | Use Scenario: Shields LIN transceivers, relays, and LED drivers from battery reversal and jump-start surges in door modules and lighting nodes. IC Role / Device Role / Timing Role: Primary overvoltage guard on fused battery feed, co-located with fuse box or junction block. Use Value: Withstands 175 °C junction temperature and 10 µA leakage at 16 V, enabling compact placement near heat sources without derating. |
| ADAS Camera Power Supply | Electric Power Steering (EPS) Motor Driver |
Use Scenario: Safeguards image sensor and ISP power rails against coupled transients from nearby high-current actuators (e.g., radar, lidar). IC Role / Device Role / Timing Role: Secondary clamping stage after bulk capacitance, located adjacent to camera module connector. Use Value: 26.0 V VC ensures <100 ns response time preserves signal integrity for MIPI CSI-2 clock/data lines during fast-rising spikes. | Use Scenario: Guards H-bridge gate drivers and current sense amplifiers from inductive kickback during motor commutation and fault shutdown. IC Role / Device Role / Timing Role: High-power TVS on 12 V auxiliary supply feeding MCU and driver ICs. Use Value: 6600 W rating absorbs repetitive 10/1000 µs pulses from PWM switching noise without degradation over 10⁵ cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16CA | Lower PPPM (400 W), higher VC (25.5 V), SMA package (RθJC ≈ 50 °C/W) | Not suitable for ISO 7637-2 load dump; limited to low-energy ESD/surge in consumer electronics | Select only for cost-sensitive non-automotive designs where 6600 W surge immunity is not required. |
| TPSMD16CA | Same DO-218AB package, 6600 W rating, but VBR min = 17.1 V and VC = 26.5 V; AEC-Q101 qualified | Identical automotive use case; minor VBR/VC variance within design margin for most 12 V systems | Drop-in alternative if Taiwan Semiconductor supply constraints exist; verify layout compatibility with same footprint. |
Compared with SMAJ16CA and TPSMD16CA, the TLD8S16CAH delivers superior thermal performance (RθJC = 0.8 °C/W vs. ≥50 °C/W), tighter VBR tolerance (±5.3 %), and proven ISO 7637-2 Pulse 5 compliance - making it the preferred choice for under-hood automotive power rail protection where sustained surge energy and thermal management are critical.
Availability
TLD8S16CAH is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering systems requiring stable component supply and long-term automotive lifecycle support.
Supply support for TLD8S16CAH 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 since 1979.
The TLD8SxxCAH series was developed specifically for high-reliability automotive power line protection, targeting ISO 7637-2 load dump immunity and under-hood thermal resilience in next-generation E/E architectures.
FAQ
What is the polarity configuration of the TLD8S16CAH?
The TLD8S16CAH is a bidirectional transient voltage suppressor, meaning it provides symmetrical clamping for both positive and negative voltage transients on the protected line. Its marking code "TLD8S16A" and "CAH" suffix confirm bidirectional functionality, unlike unidirectional variants ending in "AH". This eliminates the need for external polarity-reversal circuitry in automotive battery rail protection.
Does the TLD8S16CAH meet ISO 7637-2 Pulse 5 requirements?
Yes, the TLD8S16CAH is explicitly validated for ISO 7637-2 Pulse 5a (12 V systems) and Pulse 5b (24 V systems) load dump testing per manufacturer documentation. Its 6600 W peak pulse power rating (10/1000 µs) and 26.0 V clamping voltage ensure compliance with the standard's voltage limit and energy absorption requirements without external components.
What is the maximum junction temperature rating for the TLD8S16CAH?
The TLD8S16CAH has a maximum junction temperature (TJ max) of +175 °C, verified per AEC-Q101 stress testing. This enables reliable operation in under-hood environments such as engine compartments or near power inverters, where ambient temperatures exceed 125 °C and thermal management must account for self-heating during repeated surge events.
How does the TLD8S16CAH compare to unidirectional TVS diodes like TLD8S16AH?
The TLD8S16CAH differs from the unidirectional TLD8S16AH primarily in polarity configuration: TLD8S16CAH clamps both positive and negative transients using a back-to-back diode structure, while TLD8S16AH protects only positive surges relative to ground. Both share identical VWM (16.0 V), VBR (17.8–19.7 V), and PPPM (6600 W), but TLD8S16CAH is mandatory for systems exposed to battery reversal or dual-polarity noise.
What packaging and reel quantity is available for the TLD8S16CAH?
The TLD8S16CAH is supplied in DO-218AB surface-mount package on tape-and-reel format, with 750 units per reel. The package features matte tin-plated leads compliant with J-STD-002 solderability standards and meets JESD 201 Class 2 whisker resistance requirements for long-term automotive reliability.
TLD8S16CAH 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):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 254A
- 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
TLD8S16CAH FAQ
1.How can I place an order for TLD8S16CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD8S16CAH 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 TLD8S16CAH reliable?
The price and inventory of TLD8S16CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD8S16CAH is usually 5 days.
3.What payment methods are accepted for TLD8S16CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD8S16CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD8S16CAH?
TLD8S16CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD8S16CAH 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 TLD8S16CAH?
For technical support, including TLD8S16CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD8S16CAH requirements.
6.How does Aetrix verify that TLD8S16CAH is sourced from the original manufacturer or authorized distributors?
All TLD8S16CAH 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 TLD8S16CAH meets industry standards.
7.What is the process for return or replacement of TLD8S16CAH?
All TLD8S16CAH units undergo pre-shipment inspection (PSI). If there is an issue with TLD8S16CAH, 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 TLD8S16CAH part is unused and in its original packaging.
Return procedure for TLD8S16CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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