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Taiwan Semiconductor Corporation SMA6J22A R3G
- Part No.:
- SMA6J22A R3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J22A R3G.pdf
- Description:
- TVS DIODE 22VWM 34.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,143
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Product details
Overview
SMA6J22A R3G from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a working standoff 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 under 10/1000 µs waveform-designed for surge protection in DC/DC converters and automotive power supplies.
For engineers reviewing the SMA6J22A R3G datasheet, SMA6J22A R3G pinout, SMA6J22A R3G application, or SMA6J22A R3G equivalent, key selection criteria include its DO-214AC (SMA) package, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, 175 °C maximum junction temperature, and verified clamping performance at rated surge current.
Technical Context
This unidirectional TVS diode operates as a reverse-biased avalanche clamp, activated when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1.0 µA at VWM), while the DO-214AC package supports automated placement and meets JESD201 Class 2 whisker resistance.
The device delivers 600 W peak pulse power per 10/1000 µs waveform with sub-1 ps response time, enabling effective suppression of fast transients in 12 V and 24 V automotive and industrial power rails-without requiring series impedance or external triggering circuitry.
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 - Confirmed avalanche onset range; ensures reliable turn-on margin above VWM |
| VC @ IPPM=17.4 A | 34.5 V - Clamped voltage during 600 W surge; limits downstream IC stress to safe levels |
| IPPM | 17.4 A - Peak impulse current capability under standard 10/1000 µs waveform |
| TJ max | 175 °C - Enables operation in under-hood automotive environments without derating |
| Package | DO-214AC (SMA) - Industry-standard SMD outline; compatible with IPC-7351B footprint |
| Moisture Sensitivity | Level 1 (J-STD-020) - No bake required prior to reflow; supports standard assembly flow |
Pinout & Package
DO-214AC (SMA) package: molded plastic case with matte tin-plated leads, cathode indicated by band, polarity-sensitive unidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential rail (e.g., GND or return path) in reverse-biased protection setup |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., +24 V rail); conducts surge current to ground when VPK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports high-energy load dump and inductive switching events in 24 V systems |
| Clamping voltage ≤34.5 V at 17.4 A | Keeps protected 3.3 V/5 V/12 V logic rails within safe overvoltage margins during transients |
| ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance | Validated for automotive ECU, body control module, and infotainment power inputs |
| Glass-passivated junction | Ensures long-term VBR stability and low parameter drift across temperature and life cycle |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance requirements for automotive and industrial end equipment |
Applications
| Automotive Body Control Module (BCM) | Industrial DC/DC Converter Input |
|---|---|
Use Scenario: Protects microcontroller power input against load dump pulses up to ±100 V during alternator regulation failure. IC Role / Device Role: Unidirectional TVS placed between 24 V supply rail and chassis ground. Use Value: Limits clamped voltage to 34.5 V, preventing damage to 40 V-rated LDOs and CAN transceivers downstream. | Use Scenario: Shields isolated flyback controller IC from reflected switching spikes on primary-side 24 V input. IC Role / Device Role: Primary-side transient clamp on DC bus feeding transformer primary winding. Use Value: Absorbs 600 W surges without degradation, maintaining system uptime in factory automation power supplies. |
| LED Driver Power Stage | Telecom Power Interface |
Use Scenario: Guards constant-current LED driver IC against inductive kickback from hot-swap connector insertion. IC Role / Device Role: Reverse-biased TVS across input capacitor terminals. Use Value: Responds in <1 ps to clamp transients before they reach gate drivers or current-sense amplifiers. | Use Scenario: Suppresses lightning-induced surges on -48 V telecom power feed lines entering remote radio units. IC Role / Device Role: Polarity-specific clamp on negative rail relative to system ground. Use Value: Maintains 34.5 V clamping ceiling even after 1000+ surge events per IEC 61000-4-5 Level 4 testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J22AHE3_A/H (Vishay) | Same DO-214AC package; VBR = 24.4–26.9 V, VC = 34.5 V @ 17.4 A, but rated for 150 °C TJ max | Lower thermal limit reduces usable margin in under-hood automotive designs above 125 °C ambient | Select SMA6J22A R3G when junction temperature must reach 175 °C in sustained high-temp operation |
| P6SMB22A (ON Semiconductor) | Same VWM/VBR/VC specs, but 600 W rating uses 10/1000 µs waveform with tighter VC tolerance (±5% vs ±0% typical) | Higher unit-to-unit VC variation may require additional margin in safety-critical clamping paths | Choose SMA6J22A R3G for deterministic clamping ceiling where worst-case VC must stay ≤34.5 V |
Compared with SMA6J22AHE3_A/H and P6SMB22A, the SMA6J22A R3G provides superior high-temperature reliability (175 °C TJ max) and guaranteed clamping voltage consistency-critical for automotive power domain hardening and industrial DC/DC converter input stages.
Availability
SMA6J22A R3G is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC/DC converter inputs, and telecom power interfaces requiring stable component supply with full traceability and long-lifecycle support.
Supply support for SMA6J22A R3G 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The SMA6JxxA series is part of TSC's automotive-grade transient suppression portfolio, engineered specifically for ISO 7637-2-compliant protection in 12 V/24 V vehicle electrical systems and ruggedized industrial power supplies.
FAQ
What is the maximum clamping voltage of the SMA6J22A R3G under standard test conditions?
The SMA6J22A R3G has a maximum clamping voltage (VC) of 34.5 V when subjected to a 17.4 A peak pulse current with a 10/1000 µs waveform. This value is measured at TA = 25 °C and represents the upper limit of voltage seen by downstream circuitry during a defined surge event-ensuring compatibility with 36 V-rated components in 24 V systems.
Does the SMA6J22A R3G meet automotive EMC standards?
Yes, the SMA6J22A R3G meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements for transient immunity on 12 V and 24 V power networks. Its verified clamping behavior and 600 W surge rating make it suitable for front-end protection in ECUs, body control modules, and ADAS power domains where standardized pulse testing is mandatory.
What is the moisture sensitivity level (MSL) of the SMA6J22A R3G?
The SMA6J22A R3G is rated MSL Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30 °C/60% RH and requires no baking prior to PCB assembly. This simplifies manufacturing logistics and eliminates moisture-related popcorning risk during reflow soldering in high-volume SMT lines.
Is the SMA6J22A R3G unidirectional or bidirectional?
The SMA6J22A R3G is a unidirectional TVS diode, designed for reverse-biased operation only. Its cathode band marks the terminal that connects to the protected line (e.g., +22 V rail), while the anode connects to ground. It does not provide symmetrical clamping and must be oriented correctly to protect against positive-going transients.
What is the steady-state power dissipation rating for the SMA6J22A R3G?
The SMA6J22A R3G has a steady-state power dissipation (PD) rating of 4 W at TA = 25 °C. This value applies only to continuous DC or low-frequency reverse leakage conditions-not surge events-and must be thermally managed via PCB copper area and ambient airflow to avoid exceeding the 175 °C maximum junction temperature.
SMA6J22A R3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AC, SMA
- Series:
- SMA6J
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA6J22A R3G FAQ
1.How can I place an order for SMA6J22A R3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J22A R3G 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 SMA6J22A R3G reliable?
The price and inventory of SMA6J22A R3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J22A R3G is usually 5 days.
3.What payment methods are accepted for SMA6J22A R3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J22A R3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J22A R3G?
SMA6J22A R3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J22A R3G 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 SMA6J22A R3G?
For technical support, including SMA6J22A R3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J22A R3G requirements.
6.How does Aetrix verify that SMA6J22A R3G is sourced from the original manufacturer or authorized distributors?
All SMA6J22A R3G 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 SMA6J22A R3G meets industry standards.
7.What is the process for return or replacement of SMA6J22A R3G?
All SMA6J22A R3G units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J22A R3G, 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 SMA6J22A R3G part is unused and in its original packaging.
Return procedure for SMA6J22A R3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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