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Taiwan Semiconductor Corporation TLD8S16AH
- Part No.:
- TLD8S16AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
TLD8S16AH.pdf
- Description:
- 6600W, 18.8V, 5%, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,750
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Product details
Overview
TLD8S16AH from Taiwan Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-218AB package, designed for automotive load dump protection. It features a 16.0 V working stand-off voltage (VWM), 17.8–19.7 V breakdown voltage (VBR) at 5 mA, 254 A peak impulse current (IPPM) with 10/1000 µs waveform, and 26.0 V clamping voltage (VC) - enabling robust surge suppression in 12 V/24 V vehicle power systems.
For engineers reviewing the TLD8S16AH datasheet, TLD8S16AH pinout, TLD8S16AH application, or TLD8S16AH equivalent, key selection criteria include its AEC-Q101 qualification, 6600 W peak pulse power (10×1000 µs), 175 °C junction temperature rating, ISO 7637-2 compliance, and DO-218AB thermal performance (RθJC = 0.8 °C/W).
Technical Context
The TLD8S16AH operates as a unidirectional avalanche diode optimized for high-energy transients in automotive power networks. Its junction passivation design ensures stable VBR over temperature (αT = 0.081 %/°C) and supports continuous operation up to TJ = 175 °C - critical for under-hood applications exposed to thermal cycling and load dump events.
It meets ISO 16750-2 surge requirements and IEC 61000-4-2 Level 4 ESD immunity. With 10 µA max leakage at VWM and 2.691 g mass, it delivers low standby loss and mechanical stability in surface-mount automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16.0 V - Maximum continuous reverse operating voltage before conduction begins; sets system-level overvoltage threshold for 12 V/24 V automotive rails. |
| VBR (min/max) | 17.8–19.7 V at 5 mA - Confirmed avalanche onset range; ensures predictable turn-on during fast transients without premature triggering. |
| VC @ IPPM | 26.0 V at 254 A (10/1000 µs) - Clamped voltage during worst-case surge; limits downstream IC stress below safe operating limits. |
| PPPM (10×1000 µs) | 6600 W - Peak pulse power handling capacity; sustains full load dump energy per ISO 7637-2 Pulse 5a without failure. |
| TJ max | +175 °C - Maximum junction temperature rating; enables placement near heat sources (e.g., engine control units) without derating. |
| RθJC | 0.8 °C/W - Junction-to-case thermal resistance with ideal heatsink; supports high-power dissipation in compact DO-218AB footprint. |
Pinout & Package
Package: DO-218AB - Surface-mount, molded plastic case meeting UL 94V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance; polarity marked by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to ground or low-side return path; defines current direction during clamping. |
| Cathode | Reverse-biased terminal (marked) | Connected to protected line (e.g., battery rail); conducts avalanche current when VLINE exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - required for ECU, body control, and ADAS modules. |
| ISO 7637-2 & ISO 16750-2 compliance | Guarantees survivability against standardized load dump (Pulse 5a) and supply voltage variation transients in 12 V/24 V systems. |
| Junction passivation technology | Stabilizes VBR drift across temperature and lifetime; reduces parameter shift under repeated surge stress. |
| Moisture sensitivity level 1 | Enables standard SMT reflow without baking; eliminates moisture-related popcorning risk during assembly. |
Applications
| Engine Control Unit (ECU) Power Protection | Body Control Module (BCM) Input Protection |
|---|---|
Use Scenario: Protects microcontroller power rails and CAN transceivers from alternator load dump surges during battery disconnection. IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse-polarity and high-voltage transients on 12 V main supply input. Use Value: Limits clamped voltage to 26.0 V, preventing damage to 3.3 V/5 V logic supplies and ensuring ASIL-B functional safety integrity. | Use Scenario: Shields LIN bus interface and door actuator drivers from switching noise and battery reversal events. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbs repetitive 100 V/100 ms pulses from relay coil flyback and motor commutation. Use Value: 254 A peak current capability handles worst-case BCM surge profiles while maintaining <10 µA leakage at 16 V nominal. |
| Advanced Driver Assistance Systems (ADAS) Camera Power | Electric Power Steering (EPS) Motor Driver Protection |
Use Scenario: Safeguards image sensor and serializer ICs in rear-view cameras exposed to harsh under-hood environments. IC Role / Device Role / Timing Role: Fast-response TVS suppresses ESD and load dump spikes before they propagate through FAKRA connectors and coaxial cables. Use Value: 175 °C TJ rating allows direct mounting on camera module PCBs near heat-generating ISP processors. | Use Scenario: Guards gate drivers and current sense amplifiers in EPS H-bridge circuits from inductive kickback during motor braking. IC Role / Device Role / Timing Role: High-power TVS diverts >5 kA-equivalent surge energy away from sensitive analog front-end components. Use Value: 6600 W peak pulse power ensures single-event survivability without degradation across 10,000+ load 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 |
|---|---|---|---|
| SMAJ16A | Lower PPPM (400 W vs. 6600 W); DO-214AC package; RθJC ≈ 45 °C/W | Not suitable for load dump; limited to ESD and low-energy transients | Select only for non-automotive consumer electronics with <100 W surge exposure. |
| SMCJ16A | Same DO-214AB package; 1500 W PPPM (10×1000 µs); VBR = 17.8–19.7 V; TJ = 175 °C | Meets ISO 7637-2 Pulse 1/2/3 but not Pulse 5a due to lower power rating | Acceptable for infotainment or lighting modules where full load dump immunity is not mandated. |
Compared with SMAJ16A and SMCJ16A, the TLD8S16AH delivers 4.4× higher peak pulse power than SMCJ16A and 16.5× more than SMAJ16A - making it the only option among the three qualified for full automotive load dump protection per ISO 7637-2 Pulse 5a in DO-218AB thermal form factor.
Availability
TLD8S16AH is available at Aetrix Electronics and suitable for automotive ECU power protection, body control module surge suppression, and ADAS camera input conditioning requiring stable component supply across extended temperature and lifecycle demands.
Supply support for TLD8S16AH 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 TLD8Sx series was developed specifically for high-reliability automotive transient suppression, targeting load dump, ISO 16750-2, and ESD protection in engine bay and chassis-mounted electronic control units.
FAQ
What is the maximum clamping voltage of the TLD8S16AH under peak surge conditions?
The TLD8S16AH has a maximum clamping voltage (VC) of 26.0 V when subjected to a 10/1000 µs waveform with a peak impulse current (IPPM) of 254 A. This value is measured at TA = 25°C and ensures downstream circuitry remains within safe operating voltage limits during automotive load dump events. The TLD8S16AH maintains this clamping performance across its full rated junction temperature range up to +175 °C.
Is the TLD8S16AH suitable for bidirectional surge protection?
No, the TLD8S16AH is a unidirectional TVS diode. For bidirectional protection, Taiwan Semiconductor offers the TLD8S16CAH variant - which shares identical VWM, VBR, and PPPM ratings but supports symmetrical clamping for AC-coupled or floating signal lines. The TLD8S16AH must be oriented with cathode toward the protected line and anode to ground to function correctly in DC automotive applications.
Does the TLD8S16AH meet AEC-Q101 reliability standards?
Yes, the TLD8S16AH is fully AEC-Q101 qualified. It has passed stress tests including high-temperature operating life (HTOL), temperature cycling, unbiased highly accelerated stress test (uHAST), and mechanical shock - all per AEC-Q101 Rev D. This qualification confirms suitability for automotive powertrain, chassis, and safety-critical systems where long-term reliability under thermal and vibration stress is mandatory.
What is the thermal resistance from junction to case for the TLD8S16AH?
The TLD8S16AH has a typical junction-to-case thermal resistance (RθJC) of 0.8 °C/W when mounted on an ideal heatsink. This low value is enabled by the DO-218AB package's large copper slug and optimized internal die attach. In practice, effective thermal management requires a minimum 100 mm² copper pour connected to the cathode pad to achieve near-datasheet RθJC performance in production PCBs.
How does the TLD8S16AH compare to standard SMAJ or SMCJ series TVS diodes?
The TLD8S16AH delivers 6600 W peak pulse power (10×1000 µs), exceeding SMCJ16A (1500 W) and SMAJ16A (400 W) by factors of 4.4× and 16.5× respectively. Its DO-218AB package provides superior thermal performance (RθJC = 0.8 °C/W vs. ~45 °C/W for SMAJ), and it is explicitly validated for ISO 7637-2 Pulse 5a load dump - a requirement unmet by standard SMAJ/SMCJ parts. The TLD8S16AH is engineered for automotive under-hood deployment where those legacy series fall short.
TLD8S16AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-218AB
- Series:
- TLD8S
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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
TLD8S16AH FAQ
1.How can I place an order for TLD8S16AH through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD8S16AH 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 TLD8S16AH reliable?
The price and inventory of TLD8S16AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD8S16AH is usually 5 days.
3.What payment methods are accepted for TLD8S16AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD8S16AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD8S16AH?
TLD8S16AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD8S16AH 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 TLD8S16AH?
For technical support, including TLD8S16AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD8S16AH requirements.
6.How does Aetrix verify that TLD8S16AH is sourced from the original manufacturer or authorized distributors?
All TLD8S16AH 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 TLD8S16AH meets industry standards.
7.What is the process for return or replacement of TLD8S16AH?
All TLD8S16AH units undergo pre-shipment inspection (PSI). If there is an issue with TLD8S16AH, 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 TLD8S16AH part is unused and in its original packaging.
Return procedure for TLD8S16AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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