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Taiwan Semiconductor Corporation SMA6J22AH
- Part No.:
- SMA6J22AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J22AH.pdf
- Description:
- TVS DIODE 22VWM 34.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,357
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Product details
Overview
SMA6J22AH from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a working stand-off voltage of 22 V, breakdown voltage range 24.4–26.9 V at 1 mA, and clamping voltage of 34.5 V at 17.4 A peak pulse current (10/1000 µs waveform), designed for automotive-grade overvoltage protection in DC/DC converters and lighting systems.
For engineers reviewing the SMA6J22AH datasheet, SMA6J22AH pinout, SMA6J22AH application, or SMA6J22AH equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AC (SMA) package compatibility, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and verified clamping performance under repetitive surge conditions.
Technical Context
The SMA6J22AH is a unidirectional, single-die TVS diode optimized for fast transient suppression in automotive and industrial power rails. Its glass-passivated junction ensures stable breakdown behavior, while its <1.0 ps response time enables effective protection against ESD and load-dump events.
It operates across –55°C to +175°C junction temperature range and delivers 600 W peak pulse power (10/1000 µs) with 34.5 V clamping voltage at 17.4 A, supporting robust immunity in switching-mode power supplies and on-board converters subject to ISO 7637-2 transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR @ IT=1 mA | 24.4–26.9 V - Verified breakdown threshold ensuring reliable turn-on during overvoltage |
| VC @ IPPM=17.4 A | 34.5 V - Clamped voltage limiting downstream circuit stress during 10/1000 µs surge |
| PPPM | 600 W - Peak pulse power handling capability per standard 10/1000 µs waveform |
| IR @ VWM | 1.0 µA - Low leakage preserves efficiency in high-impedance bias networks |
| TJ Range | –55°C to +175°C - Enables deployment in under-hood automotive environments |
Pinout & Package
DO-214AC (SMA) package: surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band; weight ≈ 0.060 g; UL 94V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential rail (e.g., GND) in unidirectional configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 24 V rail); cathode band marks this terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements (HTOL, TCT, HTRB) |
| Glass-passivated junction | Ensures stable VBR and low parameter drift over temperature and lifetime |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Guarantees protection against real-world automotive transients including load dump and inductive switching |
| Fast response time <1.0 ps | Enables clamping before sensitive ICs experience damaging voltage overshoot |
| Moisture sensitivity level 1 (J-STD-020) | Eliminates need for dry-pack or baking prior to reflow soldering |
Applications
| Automotive Lighting Systems | On-Board DC/DC Converters |
|---|---|
Use Scenario: Protecting LED driver ICs and MOSFETs from load-dump transients in headlamp and tail lamp modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input rail to clamp surges before they reach switching controller or gate drivers. Use Value: Maintains system reliability under ISO 7637-2 Pulse 5a (load dump), limiting voltage to ≤34.5 V at 17.4 A. | Use Scenario: Safeguarding 12 V/24 V input stage of buck or boost converters powering infotainment or ADAS sensors. IC Role / Device Role / Timing Role: Primary overvoltage clamp at converter input, coordinated with upstream fuse and downstream LC filtering. Use Value: Withstands 600 W peak pulses without degradation, preserving converter uptime during battery connection/disconnection events. |
| Switching Mode Power Supplies | Industrial Adapters |
Use Scenario: Input-stage surge protection in AC/DC adapters used in factory automation controllers. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing line transients (IEC 61000-4-5 Level 3) before rectification and PFC stage. Use Value: 22 V VWM allows operation with 18–24 V nominal inputs while providing margin against ripple-induced false triggering. | Use Scenario: Overvoltage guard in universal-input wall adapters for medical peripherals and test equipment. IC Role / Device Role / Timing Role: Final-line defense against conducted surges entering via mains or USB-C PD negotiation faults. Use Value: Halogen-free, RoHS-compliant construction meets regulatory requirements for Class II isolated adapters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J22A (ON Semiconductor) | Same DO-214AC package, identical VWM/VC specs, but not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial only | Select when AEC-Q101 is not required and cost optimization is prioritized |
| SMLJ22A (Littelfuse) | Higher PPPM = 1500 W, same VWM/VC, DO-214AB (SMB) package | Larger footprint; better for higher-energy threats but requires PCB redesign | Choose when system-level testing reveals insufficient margin with 600 W rating |
Compared with SMA6J22A and SMLJ22A, the SMA6J22AH provides AEC-Q101 assurance in the compact DO-214AC footprint-critical for space-constrained automotive modules-while delivering validated 600 W clamping performance without layout change or derating.
Availability
SMA6J22AH is available at Aetrix Electronics and suitable for automotive lighting systems, on-board DC/DC converters, and industrial adapters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMA6J22AH 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 rectifiers with global distribution and AEC-Q101 validation capability.
The SMA6JxxAH series was developed specifically for automotive and industrial transient suppression, emphasizing ruggedness, consistency, and compliance with ISO 7637-2 and J-STD-020 standards.
FAQ
What is the maximum clamping voltage of the SMA6J22AH at its rated peak pulse current?
The SMA6J22AH has a maximum clamping voltage (VC) of 34.5 V at 17.4 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured and guaranteed per the datasheet's electrical specifications table and defines the upper voltage limit imposed on protected circuits during surge events. The SMA6J22AH maintains this clamping performance across its full operating temperature range.
Is the SMA6J22AH qualified for automotive applications?
Yes, the SMA6J22AH is AEC-Q101 qualified, meaning it has passed rigorous stress tests-including high-temperature operating life, temperature cycling, and highly accelerated stress testing-required for use in automotive electronic systems. This qualification is explicitly stated in the product features and applies to the SMA6J22AH device as shipped in DO-214AC packaging.
What package type does the SMA6J22AH use, and what are its mounting characteristics?
The SMA6J22AH uses the DO-214AC (SMA) surface-mount package: a low-profile, molded plastic case with matte tin-plated leads compliant with J-STD-002 solderability requirements. It features a cathode band for polarity identification and weighs approximately 0.060 g. The recommended pad layout and thermal relief design are provided in the official Taiwan Semiconductor package outline drawing.
Does the SMA6J22AH meet ISO 7637-2 for automotive transient immunity?
Yes, the SMA6J22AH is specified to meet ISO 7637-2 for Pulses 1, 2a, 2b, 3a, and 3b-covering common automotive transients such as coupled noise, supply interruption, and capacitive load dump. This compliance is confirmed in the "Features" section of the datasheet and validated through standardized test waveforms applied to the device in its intended circuit configuration.
What is the working stand-off voltage (VWM) and why is it critical for SMA6J22AH selection?
The SMA6J22AH has a working stand-off voltage (VWM) of 22 V, representing the maximum DC or continuous reverse voltage the device can withstand without entering breakdown. Selecting a VWM ≥110% of the system's normal operating voltage prevents false triggering during ripple or tolerance excursions-ensuring the SMA6J22AH remains inactive until a true overvoltage event occurs.
SMA6J22AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- SMA6J
- 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:
- 34.5V
- Current - Peak Pulse (10/1000µs):
- 17.4A
- Power - Peak Pulse:
- 600W
- 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-214AC (SMA)
SMA6J22AH FAQ
1.How can I place an order for SMA6J22AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J22AH 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 SMA6J22AH reliable?
The price and inventory of SMA6J22AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J22AH is usually 5 days.
3.What payment methods are accepted for SMA6J22AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J22AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J22AH?
SMA6J22AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J22AH 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 SMA6J22AH?
For technical support, including SMA6J22AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J22AH requirements.
6.How does Aetrix verify that SMA6J22AH is sourced from the original manufacturer or authorized distributors?
All SMA6J22AH 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 SMA6J22AH meets industry standards.
7.What is the process for return or replacement of SMA6J22AH?
All SMA6J22AH units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J22AH, 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 SMA6J22AH part is unused and in its original packaging.
Return procedure for SMA6J22AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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