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Vishay General Semiconductor - Diodes Division SMCJ5.0HE3/9AT
- Part No.:
- SMCJ5.0HE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ5.0HE3/9AT.pdf
- Description:
- TVS DIODE 5VWM 9.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,115
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Product details
Overview
SMCJ5.0HE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 5.0 V stand-off voltage (VWM), 6.40–7.07 V breakdown voltage (VBR) at 10 mA, 1500 W peak pulse power (10/1000 µs), 163 A peak pulse current (IPPM), and clamps transients to ≤9.2 V. It is AEC-Q101 qualified and used in automotive power supply inputs.
For engineers reviewing the SMCJ5.0HE3/9AT datasheet, SMCJ5.0HE3/9AT pinout, SMCJ5.0HE3/9AT application, or SMCJ5.0HE3/9AT equivalent, key selection criteria include unidirectional polarity, 1500 W surge rating, 9.2 V clamping voltage at rated IPPM, RoHS-compliant AEC-Q101 qualification, and DO-214AB thermal performance with RθJA = 75 °C/W.
Technical Context
The SMCJ5.0HE3/9AT operates as a silicon avalanche diode, leveraging glass-passivated junction technology for stable breakdown and low incremental surge resistance. Its unidirectional configuration enables integration into DC-biased circuits where reverse conduction must be blocked - such as 5 V rail protection downstream of rectifiers or LDOs.
It responds to transients within picoseconds and sustains 1500 W surges per the standardized 10/1000 µs waveform. Thermal design relies on 0.31" × 0.31" copper pads per terminal, delivering RθJL = 15 °C/W to leads and supporting operation from –55 °C to +150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected line voltage. |
| VBR min/max | 6.40 V / 7.07 V at 10 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal 5 V rail. |
| VC @ IPPM | ≤9.2 V - Clamped voltage during 163 A surge; defines worst-case overvoltage seen by downstream ICs. |
| PPPM | 1500 W - Peak surge power handling per 10/1000 µs waveform; qualifies for ISO 7637-2 Pulse 1/2/5a in automotive. |
| ID @ VWM | 1000 µA - Reverse leakage at 5.0 V; low enough to avoid loading 5 V logic or sensor supplies. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive placement with derating. |
| Package | DO-214AB (SMCJ) - Standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and J-bend leads for automated assembly. |
Pinout & Package
DO-214AB (SMCJ) package: molded plastic case with J-bend leads, matte tin-plated terminals solderable per J-STD-002, MSL Level 1 (260 °C peak reflow), UL 94 V-0 rated compound. Polarity marked with cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional TVS | Connected to ground or return path; conducts surge current to reference plane during overvoltage events. |
| Cathode | High-side connection, marked with band | Connected to protected line (e.g., 5 V rail); blocks reverse current and avalanches toward anode when VAK ≥ VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, body electronics, and ADAS modules. |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature, minimizing parameter drift in harsh environments. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR ≈ 2.1–2.8 V) versus competing TVS devices, reducing stress on protected ICs. |
| MSL Level 1 rating | Permits standard SMT reflow without moisture sensitivity concerns - eliminates bake requirements pre-assembly. |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualification and JESD201 Class 2 whisker resistance - suitable for high-reliability automotive PCBs. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 5 V microcontroller power input in vehicle infotainment head units exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 5 V rail and chassis ground, triggered only during positive overvoltage events. Use Value: Limits transient voltage to ≤9.2 V during 163 A surges, preventing latch-up or damage to 5 V LDOs and MCU VDD pins. | Use Scenario: Safeguarding analog output of pressure sensors in factory automation PLC I/O modules against ESD and inductive switching noise. IC Role / Device Role / Timing Role: TVS connected between sensor output line and system ground, suppressing fast-rising transients before they reach ADC front-end. Use Value: Sub-10 ns response time and 9.2 V clamping prevent ADC saturation and data corruption during 8 kV contact ESD events. |
| USB VBUS Overvoltage Clamp | DC-DC Converter Input Surge Suppression |
Use Scenario: Secondary-level protection on USB 2.0 VBUS line after primary fuse, guarding against hot-plug overshoot and external fault injection. IC Role / Device Role / Timing Role: Unidirectional TVS tied between VBUS and GND, blocking reverse current while clamping positive excursions beyond 5.5 V. Use Value: 1000 µA leakage at 5.0 V avoids violating USB suspend current limits; 1500 W rating handles repeated 10/1000 µs surges. | Use Scenario: Front-end protection for 5 V input of buck converters powering FPGA core rails in telecom base station boards. IC Role / Device Role / Timing Role: TVS installed upstream of input capacitor, absorbing energy from lightning-induced surges on 5 V distribution traces. Use Value: 75 °C/W junction-to-ambient thermal resistance allows safe operation at 6.5 W dissipation with minimal board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0AHE3/A | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (~110 °C/W) | Suitable for space-constrained consumer electronics; insufficient for automotive load dump per ISO 7637-2 Pulse 5a. | Select when board area is critical and surge energy is ≤400 W. |
| 1.5KE5.0A | Through-hole TO-218 package, same VWM/VBR/VC specs, but slower thermal response and no AEC-Q101 qualification | Used in legacy industrial power supplies; not recommended for new automotive designs requiring qualification traceability. | Select only for through-hole prototyping or non-automotive repair replacements. |
Compared with SMAJ5.0AHE3/A and 1.5KE5.0A, the SMCJ5.0HE3/9AT delivers 3.75× higher surge power in a surface-mount AEC-Q101-qualified package, enabling compact, high-reliability protection for automotive and industrial 5 V systems without layout or qualification compromises.
Availability
SMCJ5.0HE3/9AT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and USB VBUS overvoltage suppression requiring stable component supply across production lifecycles.
Supply support for SMCJ5.0HE3/9AT 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive qualification.
The SMCJ series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 1500 W surge capability are mandatory.
FAQ
What is the clamping voltage of the SMCJ5.0HE3/9AT at its rated peak pulse current?
The SMCJ5.0HE3/9AT has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated peak pulse current (IPPM) of 163 A under the standardized 10/1000 µs waveform. This value is measured at the device terminals with specified mounting conditions (0.31" × 0.31" copper pads), and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMCJ5.0HE3/9AT maintains this clamping performance across its qualified operating temperature range.
Is the SMCJ5.0HE3/9AT suitable for automotive applications?
Yes, the SMCJ5.0HE3/9AT is AEC-Q101 qualified and explicitly designed for automotive use, including engine control units, body electronics, and infotainment systems. Its DO-214AB package meets MSL Level 1, its glass-passivated junction ensures long-term stability under thermal cycling, and its 1500 W surge rating satisfies ISO 7637-2 Pulse 5a requirements. The HE3 suffix confirms full AEC-Q101 compliance, making the SMCJ5.0HE3/9AT appropriate for safety-critical and under-hood deployments.
What does the "HE3" suffix indicate in SMCJ5.0HE3/9AT?
The "HE3" suffix in SMCJ5.0HE3/9AT denotes two key attributes: RoHS compliance and AEC-Q101 qualification. Specifically, "H" indicates AEC-Q101 qualification, "E3" confirms RoHS compliance per Directive 2011/65/EU and JESD201 Class 2 whisker resistance. This distinguishes it from commercial-grade "E3" variants (e.g., SMCJ5.0A-E3/9AT) which lack automotive qualification. The SMCJ5.0HE3/9AT is therefore traceable to automotive-grade process controls and reliability testing.
How does the SMCJ5.0HE3/9AT differ from bi-directional SMCJ5.0CA variants?
The SMCJ5.0HE3/9AT is unidirectional, meaning it blocks reverse current and only clamps positive overvoltages relative to ground - ideal for DC-biased lines like 5 V power rails. In contrast, SMCJ5.0CA is bi-directional, clamping both polarities and suited for AC or floating signal lines. Their VBR ranges differ: SMCJ5.0HE3/9AT specifies 6.40–7.07 V, while SMCJ5.0CA has a maximum VBR of 7.25 V. The SMCJ5.0HE3/9AT also carries AEC-Q101 qualification, whereas CA variants require separate verification for automotive use.
What is the thermal resistance of the SMCJ5.0HE3/9AT, and how does it affect layout?
The SMCJ5.0HE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. This value assumes no additional heatsinking and dictates minimum pad area for sustained power dissipation. For reliable operation at its 6.5 W rated power, PCB layout must allocate sufficient copper area and consider ambient temperature derating - especially in enclosed automotive enclosures. The lower RθJL (15 °C/W) indicates efficient heat transfer to leads, supporting wave-solder or selective reflow processes.
SMCJ5.0HE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.6V
- Current - Peak Pulse (10/1000µs):
- 156.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SMCJ5.0HE3/9AT FAQ
1.How can I place an order for SMCJ5.0HE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ5.0HE3/9AT 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 SMCJ5.0HE3/9AT reliable?
The price and inventory of SMCJ5.0HE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ5.0HE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ5.0HE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ5.0HE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ5.0HE3/9AT?
SMCJ5.0HE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ5.0HE3/9AT 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 SMCJ5.0HE3/9AT?
For technical support, including SMCJ5.0HE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ5.0HE3/9AT requirements.
6.How does Aetrix verify that SMCJ5.0HE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ5.0HE3/9AT 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 SMCJ5.0HE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ5.0HE3/9AT?
All SMCJ5.0HE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ5.0HE3/9AT, 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 SMCJ5.0HE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ5.0HE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ5.0HE3/9AT Tags
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