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Taiwan Semiconductor Corporation SMA6J28A R3G
- Part No.:
- SMA6J28A R3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J28A R3G.pdf
- Description:
- TVS DIODE 28VWM 44VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:1,173
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Product details
Overview
SMA6J28A R3G from Taiwan Semiconductor is a 600W surface-mount transient voltage suppressor (TVS) diode with a working standoff voltage of 28 V, breakdown voltage range 31.1–34.4 V, and clamping voltage of 44.0 V at 13.6 A peak pulse current; used for surge protection in DC/DC converters and automotive power modules.
For engineers reviewing the SMA6J28A R3G datasheet, SMA6J28A R3G pinout, SMA6J28A R3G application, or SMA6J28A R3G equivalent, key selection criteria include clamping performance under ISO 7637-2 Pulse 1/2a/2b/3a/3b, DO-214AC (SMA) package compatibility, and 175°C junction temperature rating for harsh-environment deployment.
Technical Context
This unidirectional TVS diode employs a glass-passivated silicon junction optimized for fast transient response (<1.0 ps) and robust clamping during 10/1000 μs surge events. It operates as a reverse-biased shunt protector, activating above its 31.1 V minimum breakdown threshold to limit downstream voltage stress.
The device supports single-die configuration in DO-214AC (SMA) packaging with matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Polarity is marked by a cathode band, and moisture sensitivity is rated Level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VBR @ IT=1 mA | 31.1–34.4 V - Voltage at which device transitions from high-impedance to low-impedance clamping state |
| VC @ IPPM=13.6 A | 44.0 V - Clamped voltage across terminals during 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 600 W - Peak pulse power dissipation capability per non-repetitive 10/1000 µs waveform |
| TJ Range | −55 °C to +175 °C - Operating junction temperature range enabling use in under-hood automotive and industrial power systems |
| IR @ VWM | 1.0 µA - Reverse leakage current at rated standoff voltage, ensuring minimal standby power loss |
Pinout & Package
DO-214AC (SMA) package: surface-mount, single-diode configuration with cathode indicated by molded band; dimensions conform to JEDEC DO-214AC standard; weight ≈ 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to system ground or low-side reference; completes clamping loop during overvoltage event |
| Cathode | Reverse-biased terminal / Surge shunt node | Connected to protected line (e.g., 28 V rail); conducts when transient exceeds VBR, diverting energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive load-dump and inductive-switching surge immunity without external filtering |
| Fast response time <1.0 ps | Clamps transients before sensitive downstream logic or analog circuitry sustains damage |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated production |
Applications
| Automotive Power Distribution | Industrial DC/DC Converters |
|---|---|
Use Scenario: Protection of 24 V battery-fed control modules against load dump and alternator switching transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between supply rail and chassis ground to clamp surges exceeding 31.1 V. Use Value: Limits peak voltage to 44.0 V during 600 W 10/1000 µs pulses, preventing MOSFET gate oxide rupture and MCU brownout. | Use Scenario: Input-side surge suppression for isolated 28 V input DC/DC converters in factory automation PLCs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on primary-side bus, activated within <1.0 ps of transient onset. Use Value: Maintains VWM = 28 V standoff while delivering 13.6 A peak pulse current handling, preserving converter startup integrity. |
| LED Driver Power Supplies | Telecom Power Interfaces |
Use Scenario: Transient protection for constant-current LED drivers powered from 28 V industrial rails. IC Role / Device Role / Timing Role: Reverse-biased TVS across input terminals to absorb inductive kickback from driver FET switching. Use Value: Clamps to 44.0 V with ≤1.0 µA leakage at 28 V, eliminating false triggering and minimizing standby power loss. | Use Scenario: Front-end protection for 28 V telecom power interfaces exposed to lightning-induced surges. IC Role / Device Role / Timing Role: First-line shunt protector on DC input, coordinated with upstream fuse and downstream TVS arrays. Use Value: Withstands 600 W peak pulse power and meets ISO 7637-2 Pulse 3a/3b, enabling single-stage compliance without cascaded stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J28AHE3_A/H (Vishay) | Identical DO-214AC package, same VWM/VBR/VC specs, but AEC-Q200 qualified and rated for automotive-grade temperature cycling | Preferred for automotive ECUs requiring AEC-Q200 qualification; not required for industrial-only deployments | Select SMA6J28AHE3_A/H only if AEC-Q200 compliance is mandated; SMA6J28A R3G suffices for non-automotive ISO 7637-2 applications |
| P6SMB28A (ON Semiconductor) | Same 28 V VWM, but lower PPPM = 600 W (same), higher VC = 45.4 V at 13.3 A, and slightly wider VBR range (31.1–36.8 V) | Marginally higher clamping voltage reduces protection margin for 3.3 V/5 V logic rails downstream of DC/DC stage | Use P6SMB28A where footprint compatibility is critical and 1.4 V higher VC is acceptable; SMA6J28A R3G offers tighter clamping at same power rating |
Compared with SMA6J28AHE3_A/H and P6SMB28A, SMA6J28A R3G delivers identical 44.0 V clamping at 13.6 A with tighter VBR tolerance (31.1–34.4 V vs. up to 36.8 V), making it optimal for designs prioritizing precise voltage limiting without AEC-Q200 overhead.
Availability
SMA6J28A R3G is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC/DC converters, and LED driver power supplies requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for SMA6J28A 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for industrial and automotive markets.
The SMA6JxxA series is designed specifically for high-reliability transient suppression in 12–30 V DC systems, emphasizing ISO 7637-2 compliance, low clamping voltage, and robust thermal performance up to 175°C junction temperature.
FAQ
What is the maximum clamping voltage of the SMA6J28A R3G under a 10/1000 µs surge?
The SMA6J28A R3G has a maximum clamping voltage (VC) of 44.0 V when subjected to its rated peak pulse current of 13.6 A under the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and ensures predictable overvoltage limiting for downstream components in 28 V systems. The SMA6J28A R3G maintains this clamping performance across its full operating temperature range.
Does the SMA6J28A R3G meet automotive surge immunity standards?
Yes, the SMA6J28A R3G meets ISO 7637-2 requirements for Pulse 1, 2a, 2b, 3a, and 3b, making it suitable for automotive power line protection. Its 600 W peak pulse power rating and sub-1.0 ps response time enable reliable suppression of load dump and inductive switching transients. The SMA6J28A R3G is not AEC-Q200 qualified, so additional validation may be needed for full automotive qualification programs.
What is the package type and mounting configuration of the SMA6J28A R3G?
The SMA6J28A R3G uses the DO-214AC (SMA) surface-mount package with matte tin-plated leads compliant with J-STD-002 solderability standards. It features a single-diode configuration with polarity indicated by a cathode band. The SMA6J28A R3G is designed for automated placement and reflow soldering, and its footprint matches industry-standard SMA land patterns.
What is the operating temperature range for the SMA6J28A R3G?
The SMA6J28A R3G has an operating junction temperature range of −55 °C to +175 °C, supporting deployment in under-hood automotive environments, industrial motor drives, and outdoor power equipment. Its 175 °C TJMAX enables sustained operation in thermally demanding locations where ambient temperatures exceed 125 °C. The SMA6J28A R3G retains specified electrical parameters across this full range.
How does the SMA6J28A R3G compare to the SMA6J30A in terms of voltage ratings?
The SMA6J28A R3G has a working standoff voltage (VWM) of 28 V and breakdown voltage range of 31.1–34.4 V, whereas the SMA6J30A specifies VWM = 30 V and VBR = 33.3–36.8 V. Both share identical 600 W PPPM, DO-214AC packaging, and ISO 7637-2 compliance. The SMA6J28A R3G is selected for 28 V nominal systems where tighter VBR tolerance improves clamping predictability versus the higher-voltage SMA6J30A.
SMA6J28A 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):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 44V
- Current - Peak Pulse (10/1000µs):
- 13.6A
- 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)
SMA6J28A R3G FAQ
1.How can I place an order for SMA6J28A R3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J28A 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 SMA6J28A R3G reliable?
The price and inventory of SMA6J28A R3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J28A R3G is usually 5 days.
3.What payment methods are accepted for SMA6J28A R3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J28A R3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J28A R3G?
SMA6J28A R3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J28A 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 SMA6J28A R3G?
For technical support, including SMA6J28A R3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J28A R3G requirements.
6.How does Aetrix verify that SMA6J28A R3G is sourced from the original manufacturer or authorized distributors?
All SMA6J28A 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 SMA6J28A R3G meets industry standards.
7.What is the process for return or replacement of SMA6J28A R3G?
All SMA6J28A R3G units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J28A 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 SMA6J28A R3G part is unused and in its original packaging.
Return procedure for SMA6J28A R3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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