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Taiwan Semiconductor Corporation 5.0SMDJ28AH
- Part No.:
- 5.0SMDJ28AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5.0SMDJ28AH.pdf
- Description:
- TVS DIODE 28VWM 45.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:11,944
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Product details
Overview
5.0SMDJ28AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and I/O interfaces. It delivers 5000W peak pulse power at 10/1000μs, clamps to 45.4V at 110A, and features a 31.1–34.4V breakdown voltage range with <1.0ps response time. It is AEC-Q101 qualified and used in automotive power supply rail protection.
For engineers reviewing the 5.0SMDJ28AH datasheet, 5.0SMDJ28AH pinout, 5.0SMDJ28AH application, or 5.0SMDJ28AH equivalent, key selection criteria include clamping voltage (VC = 45.4V), working standoff voltage (VWM = 28V), peak pulse current (IPP = 110A), thermal resistance (RθJA = 61°C/W), and DO-214AB package compatibility with automated SMT assembly.
Technical Context
The 5.0SMDJ28AH employs a stacked-die construction in a DO-214AB (SMC) package to achieve high surge robustness while maintaining low clamping ratio (VC/VBR ≈ 1.33). Its unidirectional configuration provides reverse-biased surge suppression only, with forward voltage limited to 5V at 100A.
It operates across –55°C to +175°C junction temperature, supported by RθJL = 16°C/W and RθJC = 17°C/W, enabling reliable performance on standard 16mm × 16mm copper PCB pads. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 31.1 V / 34.4 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold tolerance |
| VC @ IPP | 45.4 V - Clamped voltage at 110 A peak pulse; determines protected circuit's maximum transient exposure |
| IPP | 110 A - Peak surge current survivable under 10/1000 μs waveform; sets surge immunity level |
| PPPM | 5000 W - Peak pulse power handling capacity; enables protection against ISO 7637-2 Pulse 5a/b surges |
| TJ max | +175 °C - Maximum junction temperature; supports under-hood automotive deployment without derating |
| RθJA | 61 °C/W - Junction-to-ambient thermal resistance on standard PCB; informs heatsinking requirements |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode-indicated by band, matte tin-plated leads, 0.300 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Reverse-biased surge clamping terminal | Connected to protected line (e.g., 28V supply rail); conducts during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Photo glass passivated junction | Enhances long-term stability and moisture resistance in humid environments (e.g., engine control units) |
| Fast response time <1.0 ps | Enables suppression of nanosecond-scale ESD transients before sensitive downstream ICs are damaged |
| Stacked die architecture | Increases surge energy absorption capability while maintaining compact DO-214AB footprint |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated applications |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting 24V battery-fed ECUs against load dump and alternator surge per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp transients above 28V. Use Value: Limits rail voltage to ≤45.4V during 110A surges, preventing damage to 36V-rated regulators and microcontrollers. | Use Scenario: Safeguarding programmable logic controller (PLC) 24V DC input terminals from field-wiring induced surges. IC Role / Device Role / Timing Role: Primary surge suppression element mounted at connector entry point, shunting energy to common ground. Use Value: Withstands repeated 5000W pulses without degradation, ensuring multi-year field reliability in factory automation. |
| Telecom Power Interface | Transportation Control Systems |
Use Scenario: Securing PoE-powered network switch DC inputs against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Standoff-rated TVS on primary side of DC-DC converter, activated only during overvoltage events. Use Value: 28V VWM allows normal operation across full 24–30V PoE range while clamping fast transients below 45.4V. | Use Scenario: Protecting onboard train control unit power supplies exposed to electromagnetic interference from traction motors. IC Role / Device Role / Timing Role: High-power TVS integrated into front-end filter stage to absorb repetitive switching transients. Use Value: 175°C max junction temperature enables uninterrupted operation in sealed, high-temperature rail cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28A | Lower PPPM (600W vs. 5000W); same DO-214AA package; VWM = 28V, VC = 45.4V | Suitable for lower-energy surges (IEC 61000-4-5 Level 2); not rated for automotive load dump | Select SMBJ28A only when surge threat is limited to ESD or low-energy transients and space constraints favor smaller footprint. |
| SMCJ28A | Same DO-214AB package; identical VWM (28V) and VC (45.4V); PPPM = 1500W (vs. 5000W) | Valid for industrial IEC 61000-4-5 Level 3; lacks AEC-Q101 qualification for automotive use | Choose SMCJ28A for cost-sensitive industrial designs where 1500W surge rating suffices and automotive qualification is unnecessary. |
Compared with SMBJ28A and SMCJ28A, the 5.0SMDJ28AH provides 3.3× and 3.3× higher peak pulse power respectively, enabling compliance with ISO 7637-2 Pulse 5 (load dump) and supporting longer service life under repetitive surge stress in harsh environments.
Availability
5.0SMDJ28AH is available at Aetrix Electronics and suitable for automotive power rail protection, industrial DC input conditioning, and telecom PoE interface surge suppression requiring stable component supply and AEC-Q101 assurance.
Supply support for 5.0SMDJ28AH 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 global automotive, industrial, and consumer markets since 1979.
The 5.0SMDJxxAH series is part of TSC's high-power TVS portfolio engineered specifically for automotive-grade transient suppression, emphasizing AEC-Q101 reliability, high clamping efficiency, and robust thermal performance in DO-214AB packaging.
FAQ
What is the clamping voltage of the 5.0SMDJ28AH under maximum rated surge current?
The 5.0SMDJ28AH clamps to 45.4 V when subjected to its maximum peak pulse current of 110 A under the standardized 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 the protected circuit during surge events. The clamping voltage remains stable across temperature and lifetime due to the device's photo glass passivated junction and stacked die construction.
Is the 5.0SMDJ28AH suitable for bidirectional surge protection applications?
No, the 5.0SMDJ28AH is a unidirectional TVS diode and is not suitable for bidirectional protection. Its design supports surge suppression only in the reverse direction (cathode to anode), with a forward voltage drop of 5 V at 100 A. For AC or dual-polarity signal lines, a bidirectional variant such as the 5.0SMDJ28CA-or a back-to-back unidirectional pair-must be used instead of the 5.0SMDJ28AH.
Does the 5.0SMDJ28AH require a heatsink in typical PCB layouts?
No external heatsink is required for the 5.0SMDJ28AH under normal surge conditions, as its RθJA of 61°C/W is specified for mounting on a 16 mm × 16 mm copper pad-a standard layout in automotive and industrial PCBs. Thermal performance is optimized via the DO-214AB package's low RθJL (16°C/W), allowing efficient heat transfer to the PCB plane. Continuous power dissipation remains limited to 6.25 W at TL = 75°C, well below its 5000 W pulsed rating.
What does the marking code "5PFG" indicate on the 5.0SMDJ28AH body?
The marking code "5PFG" laser-etched on the 5.0SMDJ28AH case identifies it as the 28 V variant within the 5.0SMDJxxAH family. Per TSC's ordering documentation, "5PF" denotes the 5.0SMDJ series, and "G" corresponds to the 28 V rating. This marking, combined with the cathode band, enables rapid visual identification and automated optical inspection (AOI) during SMT assembly without reliance on reel labels or documentation.
How does the 5.0SMDJ28AH meet automotive reliability standards?
The 5.0SMDJ28AH is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock per the AEC-Q101-004 standard. Its construction-photo glass passivated junction, matte tin-plated leads, and DO-214AB molding compound rated UL 94V-0-ensures long-term stability in under-hood environments. The device's –55°C to +175°C operating range and JESD201 Class 2 whisker resistance further validate its suitability for automotive power systems.
5.0SMDJ28AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- 5.0SMDJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 110A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
5.0SMDJ28AH FAQ
1.How can I place an order for 5.0SMDJ28AH through Aetrix?
Please submit a Request for Quotation (RFQ) for 5.0SMDJ28AH 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 5.0SMDJ28AH reliable?
The price and inventory of 5.0SMDJ28AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5.0SMDJ28AH is usually 5 days.
3.What payment methods are accepted for 5.0SMDJ28AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5.0SMDJ28AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5.0SMDJ28AH?
5.0SMDJ28AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5.0SMDJ28AH 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 5.0SMDJ28AH?
For technical support, including 5.0SMDJ28AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5.0SMDJ28AH requirements.
6.How does Aetrix verify that 5.0SMDJ28AH is sourced from the original manufacturer or authorized distributors?
All 5.0SMDJ28AH 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 5.0SMDJ28AH meets industry standards.
7.What is the process for return or replacement of 5.0SMDJ28AH?
All 5.0SMDJ28AH units undergo pre-shipment inspection (PSI). If there is an issue with 5.0SMDJ28AH, 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 5.0SMDJ28AH part is unused and in its original packaging.
Return procedure for 5.0SMDJ28AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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