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Vishay General Semiconductor - Diodes Division SMA5J28AHE3/5A
- Part No.:
- SMA5J28AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J28AHE3/5A.pdf
- Description:
- TVS DIODE 28VWM 45.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,605
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Product details
Overview
SMA5J28AHE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 28 V stand-off voltage (VWM), 31.1–34.4 V breakdown voltage (VBR) at 1 mA, 45.4 V clamping voltage (VC) at 11.0 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive ECUs, industrial sensor interfaces, and DC power rails.
For engineers reviewing the SMA5J28AHE3/5A datasheet, SMA5J28AHE3/5A pinout, SMA5J28AHE3/5A application, or SMA5J28AHE3/5A equivalent, key selection criteria include clamping performance under 11 A surge, AEC-Q101 qualification status, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, leveraging glass-passivated junction technology for stable breakdown and low incremental surge resistance. Its 150 °C maximum junction temperature and MSL Level 1 rating support reflow soldering up to 260 °C peak.
Designed for transient suppression per IEC 61000-4-2 (ESD) and IEC 61000-4-5 (surge), it delivers sub-nanosecond response time and clamps transients before downstream ICs (e.g., microcontrollers, MOSFET gate drivers) experience overvoltage stress - validated under unidirectional 8.3 ms half-sine surge (IFSM = 40 A) and repetitive 10/1000 μs pulses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous reverse operating voltage before conduction begins; sets threshold for normal operation without leakage. |
| VBR (min/max) | 31.1 V / 34.4 V at 1 mA - Confirmed breakdown range ensures reliable triggering across process variation and temperature. |
| VC @ IPPM | 45.4 V at 11.0 A - Clamping voltage limits downstream voltage stress during 10/1000 μs surge events. |
| PPPM | 500 W - Peak pulse power handling capability defines maximum transient energy absorption per event. |
| IFSM | 40 A - Non-repetitive forward surge current rating supports robustness against inductive kickback in power switching circuits. |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures. |
| RθJA | 80 °C/W - Thermal resistance informs PCB pad layout design; requires ≥5.0 mm × 5.0 mm copper per terminal for rated power dissipation. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to protected line's ground or low-side reference; completes clamping loop during transient. |
| Cathode | Reverse-biased terminal / Surge sink | Connected to protected line (e.g., 24 V rail); conducts avalanche current when Vline exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Glass passivated junction | Ensures stable VBR tolerance, low leakage (<1.0 μA at VWM), and long-term reliability under thermal cycling. |
| MSL Level 1, 260 °C peak | Compatible with standard lead-free reflow profiles without preconditioning or special handling. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a), improving clamping precision. |
| UL 94 V-0 molding compound | Meets flammability requirements for industrial and transportation end equipment safety certifications. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against load dump and alternator transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC input, absorbing >500 W surges within nanoseconds. Use Value: Prevents latch-up or destruction of upstream PMICs and microcontrollers during 12 V/24 V system transients. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground, suppressing ESD and cable discharge events. Use Value: Maintains signal integrity below 1% error while surviving ±8 kV contact ESD (IEC 61000-4-2) without degradation. |
| DC Motor Drive Gate Protection | Telecom Power Interface Protection |
Use Scenario: Safeguarding high-side N-channel MOSFET gates in brushed DC motor controllers subjected to inductive flyback. IC Role / Device Role / Timing Role: Fast-response TVS placed between gate and source, limiting VGS spikes to <45.4 V during turn-off. Use Value: Eliminates gate oxide rupture risk and extends MOSFET lifetime in 24 V/48 V motor drives. |
Use Scenario: Front-end surge suppression on -48 V telecom power feeds exposed to lightning-induced surges (IEC 61000-4-5). IC Role / Device Role / Timing Role: Primary clamping device in multi-stage protection circuit, handling bulk energy before secondary TVS or GDT. Use Value: Withstands repeated 10/1000 μs surges up to 500 W without parameter shift or failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J28AHM3/5A | Halogen-free variant; identical electrical specs, same AEC-Q101 qualification, same RoHS compliance. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU public infrastructure projects). | Direct substitution if halogen-free requirement applies; no layout or validation changes needed. |
| SMA6J28AHE3/5A | 600 W PPPM rating (vs. 500 W), higher IPPM (12.3 A), same VWM/VBR/VC, identical package and AEC-Q101 qualification. | Preferred for designs requiring margin above 500 W surges (e.g., heavy-duty vehicle alternator load dump). | Select when higher surge headroom is required; same footprint and assembly process. |
Compared with SMA5J28AHE3/5A, SMA5J28AHM3/5A offers identical protection performance with halogen-free construction, while SMA6J28AHE3/5A provides +20 % peak power margin - both retain SMA (DO-214AC) compatibility and AEC-Q101 qualification for seamless integration into automotive and industrial platforms.
Availability
SMA5J28AHE3/5A is available at Aetrix Electronics and suitable for automotive ECU power rails, industrial sensor interfaces, DC motor drive gate circuits, and telecom -48 V power feed protection requiring stable component supply and full traceability.
Supply support for SMA5J28AHE3/5A 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive-grade qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability applications - targeting automotive, industrial, and telecom systems where AEC-Q101 compliance and 500 W surge handling are mandatory.
FAQ
What is the clamping voltage of SMA5J28AHE3/5A at its rated peak pulse current?
The SMA5J28AHE3/5A has a maximum clamping voltage (VC) of 45.4 V at 11.0 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per ANSI/IEEE C62.35 and ensures downstream components see limited overvoltage during standardized surge events. The SMA5J28AHE3/5A maintains this clamping performance across its qualified operating temperature range (-55 °C to +150 °C).
Is SMA5J28AHE3/5A qualified for automotive applications?
Yes, SMA5J28AHE3/5A is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88875 (Revision 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD - validating its suitability for under-hood and chassis-mounted automotive electronics such as body control modules and ADAS sensor interfaces.
What is the maximum reverse leakage current for SMA5J28AHE3/5A at its stand-off voltage?
The SMA5J28AHE3/5A exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 28 V stand-off voltage (VWM), tested at TA = 25 °C. This low leakage ensures minimal power loss in standby mode and prevents false triggering in battery-powered or low-quiescent-current systems where the SMA5J28AHE3/5A is deployed.
Does SMA5J28AHE3/5A have a defined thermal resistance specification?
Yes, the SMA5J28AHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value guides PCB thermal design - reducing pad area or omitting thermal vias increases junction temperature, potentially derating the 500 W PPPM capability per Figure 2 in the datasheet.
What packaging format does SMA5J28AHE3/5A ship in?
SMA5J28AHE3/5A ships in 13" diameter plastic tape and reel format with a base quantity of 7500 units, as indicated by the "/5A" suffix in the part number. This packaging supports high-speed automated pick-and-place assembly and complies with EIA-481 standards. The reel includes moisture-sensitive level (MSL) 1 labeling and dry-packaging per J-STD-033.
SMA5J28AHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- 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:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 11A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J28AHE3/5A FAQ
1.How can I place an order for SMA5J28AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J28AHE3/5A 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 SMA5J28AHE3/5A reliable?
The price and inventory of SMA5J28AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J28AHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J28AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J28AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J28AHE3/5A?
SMA5J28AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J28AHE3/5A 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 SMA5J28AHE3/5A?
For technical support, including SMA5J28AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J28AHE3/5A requirements.
6.How does Aetrix verify that SMA5J28AHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J28AHE3/5A 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 SMA5J28AHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J28AHE3/5A?
All SMA5J28AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J28AHE3/5A, 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 SMA5J28AHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J28AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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