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Taiwan Semiconductor Corporation TLD5S22AH
- Part No.:
- TLD5S22AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
TLD5S22AH.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,676
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Product details
Overview
TLD5S22AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-218AB package, rated for 22.0 V working stand-off voltage, 24.4–26.9 V breakdown voltage at 5 mA, 35.5 V clamping voltage at 101 A peak pulse current, and 3600 W peak pulse power (10/1000 µs). It is AEC-Q101 qualified and designed for automotive load dump surge protection.
For engineers reviewing the TLD5S22AH datasheet, TLD5S22AH pinout, TLD5S22AH application, or TLD5S22AH equivalent, key selection criteria include its 175 °C junction temperature rating, 0.9 °C/W junction-to-case thermal resistance, unidirectional polarity, and compliance with ISO 7637-2, ISO 16750-2, IEC 61000-4-2 Level 4, and ISO 10605 Level L4.
Technical Context
The TLD5S22AH employs junction passivation optimized design technology to sustain 175 °C continuous operation and withstand high-energy transients. Its DO-218AB package enables low thermal resistance (0.9 °C/W) when mounted on an ideal heatsink and supports high surge current handling up to 500 A (8.3 ms half-sine).
It delivers 3600 W non-repetitive peak impulse power under 10/1000 µs waveform and 2800 W under 10/10000 µs waveform, with 10 µA maximum reverse leakage at VWM and 150 µA at TJ = 175 °C - critical for stable operation in harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22.0 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 24.4 V / 26.9 V at IT = 5 mA - ensures reliable turn-on threshold across process variation |
| VC @ IPPM | 35.5 V at 101 A (10/1000 µs) - limits downstream voltage stress during load dump events |
| PPPM (10/1000 µs) | 3600 W - sustains high-energy automotive transients per ISO 7637-2 Pulse 5a |
| TJ max | 175 °C - enables placement near hot engine control units without derating |
| RθJC | 0.9 °C/W - allows effective thermal coupling to PCB copper or heatsink for sustained power dissipation |
| Polarity | Unidirectional - protects against negative-going surges only; requires correct orientation in circuit |
Pinout & Package
Package: DO-218AB - surface-mount, single-die, unidirectional TVS diode with matte tin-plated leads, UL 94V-0 molding compound, and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Surge current sink | Connected to protected line; conducts during overvoltage to clamp voltage |
| Anode | Reference return path | Connected to ground or low-impedance return; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Junction passivation optimized design | Enables stable 175 °C operation and long-term leakage performance stability |
| ISO 7637-2 & ISO 16750-2 compliance | Guarantees survivability under standardized automotive load dump and supply surge waveforms |
| IEC 61000-4-2 Level 4 / ISO 10605 Level L4 | Withstands 15 kV air / 8 kV contact ESD and 30 kV component-level ESD per ISO 10605 |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to reflow soldering |
Applications
| Engine Control Unit (ECU) Power Input Protection | Body Control Module (BCM) CAN Bus Power Rail |
|---|---|
Use Scenario: Protects 12 V supply input of engine control units against load dump transients up to 35 V and 3600 W. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamping excess energy to ground during alternator field decay events. Use Value: Limits voltage seen by downstream DC-DC converters and microcontrollers to ≤35.5 V, preventing latch-up or permanent damage. | Use Scenario: Shields 12 V power rail feeding CAN transceivers in body control modules from battery line surges. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed upstream of CAN power conditioning stage. Use Value: Maintains <10 µA leakage at 22 V to avoid quiescent current impact while clamping 101 A surges within 1 ns response time. |
| Advanced Driver Assistance Systems (ADAS) Camera Power Supply | Electric Power Steering (EPS) Motor Driver Power Stage |
Use Scenario: Safeguards 12 V input to ADAS camera modules exposed to vehicle-level transients during jump-start or battery disconnect. IC Role / Device Role / Timing Role: Primary overvoltage protection element on front-end power entry point. Use Value: Withstands 175 °C ambient and maintains clamping performance after repeated 10/1000 µs pulses per ISO 16750-2. | Use Scenario: Protects high-current H-bridge driver ICs from inductive kickback and load dump in EPS motor control circuits. IC Role / Device Role / Timing Role: High-power TVS placed across motor driver supply rails to absorb 500 A surge currents. Use Value: Delivers 3600 W peak power handling and 0.9 °C/W thermal resistance to prevent thermal runaway during repeated surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Lower PPPM (400 W), SMA package, RθJC ≈ 50 °C/W, VBR = 24.4–27.0 V | Not suitable for ISO 7637-2 load dump; limited to lower-energy transients | Select TLD5S22AH where 3600 W surge capability and AEC-Q101 qualification are mandatory |
| SMCJ22A | PPPM = 1500 W, SMC package, RθJC ≈ 3.5 °C/W, same VBR range, AEC-Q101 not claimed | Acceptable for non-critical automotive sub-systems but lacks full load dump margin | Choose TLD5S22AH when designing for engine bay or safety-critical power domains requiring 175 °C and 3600 W |
Compared with SMAJ22A and SMCJ22A, the TLD5S22AH provides 2.4× and 2.4× higher peak pulse power respectively, 5.6× and 3.9× lower thermal resistance, and formal AEC-Q101 certification - making it the only option qualified for direct integration into engine control and ADAS power rails.
Availability
TLD5S22AH is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, ADAS camera systems, and electric power steering applications requiring stable component supply, AEC-Q101 compliance, and high-energy surge immunity.
Supply support for TLD5S22AH 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 power devices, TVS diodes, and automotive-qualified components.
The TLD5SxxAH series was developed specifically for high-reliability automotive power rail protection, targeting ISO 7637-2 load dump and ISO 16750-2 surge immunity requirements in engine bay and safety-critical ECUs.
FAQ
What is the clamping voltage of the TLD5S22AH at its rated peak pulse current?
The TLD5S22AH has a maximum clamping voltage (VC) of 35.5 V at 101 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The TLD5S22AH maintains this clamping performance across its full operating temperature range and is validated per ISO 7637-2 Pulse 5a requirements.
Is the TLD5S22AH AEC-Q101 qualified?
Yes, the TLD5S22AH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD robustness, confirming suitability for automotive under-hood applications. The TLD5S22AH's 175 °C maximum junction temperature and moisture sensitivity level 1 rating further support its use in production automotive systems.
What package does the TLD5S22AH use and what are its mounting requirements?
The TLD5S22AH uses the DO-218AB surface-mount package with matte tin-plated leads compatible with standard reflow profiles. Its thermal design requires direct thermal coupling to large PCB copper areas or external heatsinks to leverage its 0.9 °C/W junction-to-case resistance. The suggested pad layout and UL 94V-0 mold compound ensure mechanical robustness and flame resistance in automotive environments.
How does the TLD5S22AH compare to the TLD5S20AH and TLD5S24AH in terms of voltage ratings?
The TLD5S22AH has a working stand-off voltage (VWM) of 22.0 V, breakdown voltage range of 24.4–26.9 V, and clamping voltage of 35.5 V. In comparison, TLD5S20AH offers VWM = 20.0 V and VC = 32.4 V, while TLD5S24AH offers VWM = 24.0 V and VC = 38.9 V. All three share identical power ratings (3600 W), thermal resistance (0.9 °C/W), and AEC-Q101 qualification - enabling voltage-tiered selection within the same footprint.
Does the TLD5S22AH meet ISO 10605 and IEC 61000-4-2 ESD standards?
Yes, the TLD5S22AH meets both ISO 10605 Level L4 (30 kV component-level ESD) and IEC 61000-4-2 Level 4 (15 kV air / 8 kV contact discharge). These ratings are confirmed in the official datasheet and reflect its ability to protect downstream circuitry from electrostatic discharge events common in automotive assembly and service environments. The TLD5S22AH's low leakage and fast response ensure minimal system disruption during ESD events.
TLD5S22AH 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):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 101A
- 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
TLD5S22AH FAQ
1.How can I place an order for TLD5S22AH through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD5S22AH 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 TLD5S22AH reliable?
The price and inventory of TLD5S22AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD5S22AH is usually 5 days.
3.What payment methods are accepted for TLD5S22AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD5S22AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD5S22AH?
TLD5S22AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD5S22AH 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 TLD5S22AH?
For technical support, including TLD5S22AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD5S22AH requirements.
6.How does Aetrix verify that TLD5S22AH is sourced from the original manufacturer or authorized distributors?
All TLD5S22AH 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 TLD5S22AH meets industry standards.
7.What is the process for return or replacement of TLD5S22AH?
All TLD5S22AH units undergo pre-shipment inspection (PSI). If there is an issue with TLD5S22AH, 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 TLD5S22AH part is unused and in its original packaging.
Return procedure for TLD5S22AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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