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Taiwan Semiconductor Corporation SMA6J20A R3G
- Part No.:
- SMA6J20A R3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J20A R3G.pdf
- Description:
- TVS DIODE 20VWM 31.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,761
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Product details
Overview
SMA6J20A R3G from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a 20V working standoff voltage, 22.2–24.5V breakdown range at 1mA, and 31.4V maximum clamping voltage at 19.1A peak pulse current; used for surge protection in DC/DC converters and power adapters.
For engineers reviewing the SMA6J20A R3G datasheet, SMA6J20A R3G pinout, SMA6J20A R3G application, or SMA6J20A R3G equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, DO-214AC package compatibility, and 175°C junction temperature rating for automotive and industrial power rail protection.
Technical Context
This unidirectional TVS diode employs a glass-passivated silicon junction optimized for fast transient response (<1.0ps), low leakage (<1.0µA at 20V), and robust 600W peak pulse power handling per 10/1000µs waveform. It operates across –55°C to +175°C and meets JESD201 Class 2 whisker resistance.
The device is configured as a single die in DO-214AC (SMA) package with cathode band polarity marking, matte tin-plated leads compliant with J-STD-002 solderability, and UL 94V-0 molding compound - enabling automated placement in high-reliability power supply assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 22.2 V / 24.5 V @ 1 mA - Confirmed breakdown threshold range defining turn-on consistency |
| VC @ IPPM | 31.4 V @ 19.1 A - Clamping voltage during 10/1000µs surge, limiting downstream voltage stress |
| PPPM | 600 W - Peak pulse power dissipation capability under standardized surge waveform |
| TJ max | +175 °C - Maximum junction temperature enabling operation in under-hood or enclosed power systems |
| IR @ VWM | ≤1.0 µA - Low reverse leakage preserves efficiency in standby and low-power modes |
Pinout & Package
DO-214AC (SMA) package: surface-mount, single-ended, cathode-indicated by molded band; 0.060g mass; RoHS-compliant, halogen-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line (e.g., GND or return path) |
| Cathode | Reverse-biased clamping terminal | Connected to higher-potential line (e.g., VIN, BUS); marked by band; conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| Fast response time <1.0 ps | Clamps ESD and fast transients before sensitive downstream circuitry sustains damage |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive load-dump and inductive-switching surge immunity without external filtering |
| DO-214AC mechanical robustness | Withstands reflow profiles up to 260°C and meets JESD201 Class 2 whisker resistance for lead integrity |
Applications
| Switching Mode Power Supply (SMPS) | On-Board DC/DC Converter |
|---|---|
Use Scenario: Protection of primary-side MOSFET gate drivers and secondary-side rectifier inputs against switching-induced voltage spikes. IC Role / Device Role: Unidirectional TVS placed across input rails or across transformer windings to clamp repetitive transients. Use Value: Limits peak voltage to ≤31.4V during 10/1000µs surges, preventing gate oxide rupture and rectifier avalanche failure. | Use Scenario: Input rail surge suppression in point-of-load (POL) converters powering FPGAs or microcontrollers in industrial PLCs. IC Role / Device Role: Standoff-rated TVS connected between VIN and GND to absorb coupled noise from adjacent motor drives or relay coils. Use Value: Maintains 20V working standoff while clamping to 31.4V, preserving regulation margin and avoiding brownout resets. |
| Automotive Lighting Module | AC/DC Adapter Output Stage |
Use Scenario: Transient protection on LED driver IC supply pins subjected to load dump pulses per ISO 7637-2 Pulse 5a. IC Role / Device Role: Secondary-side TVS on 12V or 24V lighting bus, placed upstream of buck controller ICs. Use Value: Withstands 600W peak pulse energy and operates up to +175°C ambient, matching under-hood thermal requirements. | Use Scenario: Output overvoltage suppression in universal-input 5V/12V wall adapters exposed to lightning-induced surges on mains lines. IC Role / Device Role: Final-stage TVS across output capacitor terminals to protect connected USB peripherals or IoT sensors. Use Value: Delivers ≤1.0µA leakage at 20V, minimizing no-load power loss while maintaining tight clamping at 31.4V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J20AHE3_A/H (Vishay) | Same DO-214AC package, identical VWM/VBR/VC specs; ±5% VBR tolerance vs. TSC's ±5.5% | Qualified to AEC-Q101; preferred for automotive production where qualification traceability is mandatory | Select when AEC-Q101 certification is required; otherwise SMA6J20A R3G offers equivalent electrical performance at lower cost |
| P6SMB20A (ON Semiconductor) | Same 20V VWM, but 32.4V VC @ 18.7A; 600W rating; slightly higher clamping voltage and lower IPPM | Broader distribution channel; common in legacy industrial designs with established BOMs | Acceptable for non-critical clamping margin applications; verify system-level clamping headroom remains ≥1.5× IC absolute max rating |
Compared with SMA6J20AHE3_A/H and P6SMB20A, the SMA6J20A R3G delivers identical 31.4V clamping at 19.1A with tighter VBR distribution and J-STD-020 Level 1 moisture sensitivity - simplifying SMT process control in high-volume manufacturing.
Availability
SMA6J20A R3G is available at Aetrix Electronics and suitable for switching mode power supplies, automotive lighting modules, and on-board DC/DC converters requiring stable component supply with full traceability and extended lifecycle support.
Supply support for SMA6J20A 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, serving industrial, computing, and automotive markets since 1979.
The SMA6JxxA series is part of TSC's transient protection product line, engineered specifically for high-energy surge immunity in compact surface-mount power systems where reliability under thermal and electrical stress is critical.
FAQ
What is the maximum clamping voltage of the SMA6J20A R3G under standard test conditions?
The SMA6J20A R3G has a maximum clamping voltage (VC) of 31.4 V at 19.1 A peak pulse current, measured using the 10/1000 µs waveform per IEC 61000-4-5. This value ensures downstream components see limited overvoltage during surge events, and it is guaranteed across the full operating temperature range of –55°C to +175°C. The SMA6J20A R3G maintains this clamping performance without derating up to its rated junction temperature.
Does the SMA6J20A R3G meet automotive surge immunity standards?
Yes, the SMA6J20A R3G meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for 12 V and 24 V automotive subsystems including lighting and body control modules. It is not AEC-Q101 qualified out of the box, but its electrical and thermal specifications align with automotive-grade transient protection needs. For certified applications, consider SMA6J20AHE3_A/H as an alternative. The SMA6J20A R3G itself supports operation up to +175°C junction temperature, matching under-hood thermal environments.
What is the packaging configuration and tape-and-reel quantity for SMA6J20A R3G?
The SMA6J20A R3G is supplied in DO-214AC (SMA) package format on 7,500-piece tape-and-reel reels, compatible with standard high-speed pick-and-place equipment. The package features matte tin-plated leads meeting J-STD-002 solderability requirements and a cathode band for polarity identification. Moisture sensitivity level is J-STD-020 Level 1, eliminating bake requirements prior to reflow. The SMA6J20A R3G reel packaging enables seamless integration into automated SMT lines without handling or orientation concerns.
How does the breakdown voltage tolerance of SMA6J20A R3G compare to similar TVS diodes?
The SMA6J20A R3G specifies a breakdown voltage range of 22.2 V to 24.5 V at 1 mA test current, corresponding to ±5.5% tolerance around the nominal 23.35 V midpoint. This matches industry-standard tolerances for 600W SMA-packaged TVS devices and ensures predictable turn-on behavior across production lots. Unlike wider-tolerance alternatives, this range guarantees clamping initiates reliably within system-defined overvoltage margins. The SMA6J20A R3G maintains this specification across its full operating temperature range without additional derating.
Is the SMA6J20A R3G RoHS-compliant and halogen-free?
Yes, the SMA6J20A R3G is fully RoHS-compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and all materials comply with EU Directive 2011/65/EU and subsequent amendments. Lead finish is matte tin, free of lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE. These environmental attributes are verified per lot and documented in TSC's material declarations. The SMA6J20A R3G supports green manufacturing initiatives without compromising electrical or thermal performance.
SMA6J20A 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):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 31.4V
- Current - Peak Pulse (10/1000µs):
- 19.1A
- 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)
SMA6J20A R3G FAQ
1.How can I place an order for SMA6J20A R3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J20A 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 SMA6J20A R3G reliable?
The price and inventory of SMA6J20A R3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J20A R3G is usually 5 days.
3.What payment methods are accepted for SMA6J20A R3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J20A R3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J20A R3G?
SMA6J20A R3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J20A 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 SMA6J20A R3G?
For technical support, including SMA6J20A R3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J20A R3G requirements.
6.How does Aetrix verify that SMA6J20A R3G is sourced from the original manufacturer or authorized distributors?
All SMA6J20A 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 SMA6J20A R3G meets industry standards.
7.What is the process for return or replacement of SMA6J20A R3G?
All SMA6J20A R3G units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J20A 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 SMA6J20A R3G part is unused and in its original packaging.
Return procedure for SMA6J20A R3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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