My Inquiry
My Account
Taiwan Semiconductor Corporation TLD6S22AH
- Part No.:
- TLD6S22AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-218AB
- Datasheet:
-
TLD6S22AH.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO218AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLD6S22AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for automotive load dump surge protection in 24V systems. It features a working stand-off voltage of 22.0 V, breakdown voltage range of 24.4–26.9 V at 5.0 mA test current, clamping voltage of 35.5 V at 130 A peak pulse current (10/1000 µs), and 4600 W peak pulse power capability.
For engineers reviewing the TLD6S22AH datasheet, TLD6S22AH pinout, TLD6S22AH application, or TLD6S22AH equivalent, key selection criteria include its DO-218AB package, AEC-Q101 qualification, 175 °C junction temperature rating, compliance with ISO 7637-2 and ISO 16750-2, and suitability for high-energy transients in automotive power networks.
Technical Context
The TLD6S22AH operates as a unidirectional avalanche diode optimized for fast clamping of high-energy transients such as ISO 7637-2 Load Dump pulses. Its junction passivation design enables stable operation up to TJ = 175 °C, supporting under-hood automotive environments without derating.
It delivers 4600 W non-repetitive peak impulse power (10/1000 µs) and 3600 W (10/10000 µs), with thermal resistance RθJC = 0.85 °C/W when mounted on an ideal heatsink. The device exhibits a typical VBR temperature coefficient of +0.086 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22.0 V - Maximum continuous reverse operating voltage before significant leakage |
| VBR (min/max) | 24.4 V / 26.9 V at IT = 5.0 mA - Ensures reliable turn-on above system nominal voltage |
| VC @ IPPM | 35.5 V at 130 A (10/1000 µs) - Clamps surge energy within safe IC input limits |
| PPPM | 4600 W (10/1000 µs) - Handles full-load-dump surges per ISO 7637-2 Pulse 5a |
| Junction Temp | −55 °C to +175 °C - Enables placement near hot engine compartments |
| Package | DO-218AB - Surface-mount, high-power capable, UL 94V-0 rated molding compound |
| Leakage Current | ≤10 µA at VWM, ≤150 µA at VWM and TJ = 175 °C - Low standby loss in always-on systems |
Pinout & Package
Package: DO-218AB - asymmetrical surface-mount case with matte tin-plated leads, polarity-marked cathode band, moisture sensitivity level 1 (J-STD-020), and 2.682 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or low-impedance return path during clamping |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., battery rail); marked with band |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics reliability per stress test requirements |
| ISO 7637-2 & ISO 16750-2 compliant | Meets standardized load dump and supply voltage variation test profiles |
| 175 °C maximum junction temperature | Enables direct mounting on high-temperature PCB zones without thermal derating |
| Uni-directional configuration | Protects against positive-going transients only; avoids forward conduction during normal operation |
| 0.85 °C/W junction-to-case thermal resistance | Supports efficient heat transfer to heatsink or copper pour for sustained surge handling |
Applications
| Automotive Battery Rail Protection | Engine Control Unit (ECU) Input Protection |
|---|---|
Use Scenario: Protects 24V commercial vehicle battery feed against ISO 7637-2 Pulse 5a load dump events up to 120 V and 400 ms duration. IC Role / Device Role / Timing Role: TVS diode placed in parallel with DC-DC input stage to clamp overvoltage before it reaches downstream regulators. Use Value: Limits clamped voltage to 35.5 V, ensuring input stage remains below absolute maximum ratings of 40 V-rated buck controllers. | Use Scenario: Shields ECU microcontroller power inputs from alternator-induced surges during ignition cycling and load shedding. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on main 24V supply rail entering the ECU housing. Use Value: Withstands 130 A peak current and dissipates 4600 W for 1 ms, preventing latch-up or permanent damage to sensitive logic. |
| Commercial Vehicle Lighting Module | ADAS Camera Power Supply Protection |
Use Scenario: Integrated into LED headlamp driver modules exposed to repeated load dump events during heavy-duty vehicle operation. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of buck converter feeding LED strings. Use Value: Maintains <10 µA leakage at 22 V, minimizing quiescent current draw in always-on lighting control circuits. | Use Scenario: Secures 12/24V input to camera module power management ICs in ADAS domain controllers. IC Role / Device Role / Timing Role: First-line transient suppression element on camera power rail, preceding EMI filter and LDO. Use Value: Clamps sub-100 ns rise-time spikes to ≤35.5 V, preserving signal integrity and preventing reset faults in vision processors. |
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 (10/1000 µs); DO-214AC package; VC = 35.5 V at 11.3 A | Not suitable for full load dump; limited to lower-energy ISO 10605/IEC 61000-4-2 events | Select SMAJ22A only for cost-sensitive, non-automotive 24V systems with controlled surge profiles. |
| SMCJ22A | PPPM = 1500 W (10/1000 µs); DO-214AB package; VC = 35.5 V at 42.5 A | Insufficient for ISO 7637-2 Pulse 5a; requires parallel devices or supplemental protection | Use SMCJ22A where board space allows larger footprint but full 4600 W capability is not required. |
Compared with SMAJ22A and SMCJ22A, the TLD6S22AH delivers 3.1× and 3.1× higher peak power handling respectively in the same clamping voltage class, enabling single-device compliance with automotive load dump standards without layout complexity or thermal stacking.
Availability
TLD6S22AH is available at Aetrix Electronics and suitable for automotive battery rail protection, ECU input protection, and ADAS camera power supply protection requiring stable component supply across production lifecycles.
Supply support for TLD6S22AH 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.
The TLD6SxxAH series is engineered specifically for high-energy transient suppression in 12 V and 24 V automotive electrical systems, targeting compliance with ISO 7637-2, ISO 16750-2, and AEC-Q101 requirements.
FAQ
What is the clamping voltage of the TLD6S22AH at its rated peak pulse current?
The TLD6S22AH has a maximum clamping voltage (VC) of 35.5 V when subjected to a 130 A peak pulse current with a 10/1000 µs waveform. This value is measured under standard test conditions per IEC 61000-4-5 and ensures downstream circuitry remains within safe operating voltage limits during load dump events. The TLD6S22AH maintains this clamping performance across its specified junction temperature range.
Is the TLD6S22AH qualified for automotive use?
Yes, the TLD6S22AH is AEC-Q101 qualified and meets ISO 7637-2 and ISO 16750-2 surge immunity requirements for automotive applications. It supports junction temperatures up to +175 °C and is constructed using junction passivation optimized technology. The TLD6S22AH is explicitly intended for under-hood and powertrain-related systems where high-reliability transient suppression is mandatory.
What package does the TLD6S22AH use, and what are its mechanical advantages?
The TLD6S22AH uses the DO-218AB surface-mount package, which features a robust molded body rated UL 94V-0, matte tin-plated leads compliant with J-STD-002, and a polarity-indicating cathode band. Its low-profile, high-current capable construction provides superior thermal dissipation (RθJC = 0.85 °C/W) and mechanical stability versus smaller packages like DO-214AB. The TLD6S22AH's DO-218AB footprint supports high-volume automated assembly while maintaining surge robustness.
How does the TLD6S22AH compare to the TLD6S20AH and TLD6S24AH in terms of voltage rating?
The TLD6S22AH has a working stand-off voltage (VWM) of 22.0 V and breakdown voltage range of 24.4–26.9 V, positioning it between the TLD6S20AH (VWM = 20.0 V) and TLD6S24AH (VWM = 24.0 V). All three share identical power ratings (4600 W), thermal performance, and package. The TLD6S22AH is selected when system nominal voltage and margin requirements align precisely with 22 V standoff, avoiding overdesign or insufficient margin found with adjacent variants.
Does the TLD6S22AH require a heatsink for standard automotive operation?
The TLD6S22AH does not require an external heatsink for single-event surge suppression per ISO 7637-2 Pulse 5a, due to its short-duration energy absorption. However, for repetitive surge conditions or elevated ambient temperatures, thermal design using PCB copper pour or localized heatsinking is recommended to maintain junction temperature below 175 °C. The TLD6S22AH's RθJC = 0.85 °C/W assumes ideal heatsink contact; actual board-level thermal performance depends on layout and copper area.
TLD6S22AH 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):
- 130A
- 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
TLD6S22AH FAQ
1.How can I place an order for TLD6S22AH through Aetrix?
Please submit a Request for Quotation (RFQ) for TLD6S22AH 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 TLD6S22AH reliable?
The price and inventory of TLD6S22AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD6S22AH is usually 5 days.
3.What payment methods are accepted for TLD6S22AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD6S22AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLD6S22AH?
TLD6S22AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLD6S22AH 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 TLD6S22AH?
For technical support, including TLD6S22AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD6S22AH requirements.
6.How does Aetrix verify that TLD6S22AH is sourced from the original manufacturer or authorized distributors?
All TLD6S22AH 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 TLD6S22AH meets industry standards.
7.What is the process for return or replacement of TLD6S22AH?
All TLD6S22AH units undergo pre-shipment inspection (PSI). If there is an issue with TLD6S22AH, 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 TLD6S22AH part is unused and in its original packaging.
Return procedure for TLD6S22AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLD6S22AH Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
