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Vishay General Semiconductor - Diodes Division SMCJ30HE3/57T
- Part No.:
- SMCJ30HE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ30HE3/57T.pdf
- Description:
- TVS DIODE 30VWM 53.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,691
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Product details
Overview
SMCJ30HE3/57T from Vishay General Semiconductor is a surface-mount transient voltage suppressor (TVS) diode designed for bi-directional overvoltage protection in power and signal lines. It features a 30 V stand-off voltage (VWM), 48.4 V maximum clamping voltage at 31.0 A peak pulse current, 1500 W peak pulse power rating, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCJ30HE3/57T datasheet, SMCJ30HE3/57T pinout, SMCJ30HE3/57T application, or SMCJ30HE3/57T equivalent, this device is selected for robust ESD and surge protection in automotive ECUs, industrial sensor interfaces, and DC power rail conditioning where low-leakage, fast response (<1 ns), and DO-214AB package compatibility are critical.
Technical Context
The SMCJ30HE3/57T operates as a bi-directional avalanche diode with symmetrical breakdown characteristics-minimum breakdown voltage of 33.3 V and maximum of 36.8 V at 1.0 mA test current. Its clamping behavior under 10/1000 µs surge waveforms ensures predictable voltage limiting during transients up to 1500 W.
Thermally, it exhibits a junction-to-ambient thermal resistance of 75 °C/W on standard 8.0 mm × 8.0 mm copper pads and supports continuous operation from –55 °C to +150 °C. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum reverse working voltage before clamping begins; defines safe operating range for continuous DC bias. |
| VBR (min/max) | 33.3 V / 36.8 V - Breakdown occurs within this band at 1.0 mA; ensures consistent turn-on across production lots. |
| VC @ IPPM | 48.4 V - Clamped voltage at 31.0 A peak pulse current; limits downstream component stress during surge events. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform; enables protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | 1.0 µA - Reverse leakage at rated stand-off voltage; minimizes standby power loss in battery-powered systems. |
| TJ max. | +150 °C - Maximum junction temperature; supports under-hood automotive placement without 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 two J-bend terminals; no polarity marking for bi-directional configuration; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bi-directional terminals conduct equally in both directions during overvoltage events; no cathode band marking required. |
| Case | Thermal and mechanical interface | Plastic body provides electrical isolation; copper pad layout (8.0 mm × 8.0 mm per terminal) required to achieve rated 1500 W pulse power. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails. |
| 1500 W peak pulse power | Withstands high-energy transients such as load dump (ISO 7637-2 Pulse 5a) and EFT bursts without degradation. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes overvoltage margin between protection threshold and IC withstand capability-critical for 3.3 V/5 V logic interfaces. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free PCB assembly processes without moisture sensitivity concerns. |
| Glass passivated junction | Ensures stable breakdown voltage and long-term reliability under thermal cycling and humidity exposure. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in body control modules against ISO 7637-2 load dump and jump-start surges. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed upstream of LDO regulators to limit input voltage to safe levels during transients. Use Value: SMCJ30HE3/57T clamps to 48.4 V at 31 A, preventing regulator overvoltage failure while maintaining <1 µA leakage at nominal 12 V operation. | Use Scenario: Shielding 4–20 mA current loop analog inputs in PLC I/O modules from field-induced lightning surges and ESD. IC Role / Device Role / Timing Role: Bidirectional transient suppressor bridging signal line to ground, absorbing common-mode energy without disrupting DC bias. Use Value: With 30 V VWM and 48.4 V VC, SMCJ30HE3/57T protects precision op-amps and ADC front-ends while preserving signal integrity below 20 mA full-scale. |
| DC-DC Converter Input Protection | Automotive Camera Module ESD Protection |
Use Scenario: Safeguarding buck converter inputs in ADAS domain controllers exposed to alternator ripple and switching noise. IC Role / Device Role / Timing Role: Primary surge suppression stage before input filter capacitors and controller ICs. Use Value: 1500 W PPPM rating allows SMCJ30HE3/57T to absorb repetitive transients without parametric shift-verified per AEC-Q101 stress testing. | Use Scenario: Front-end protection for FAKRA or HSD camera links in rear-view and surround-view systems. IC Role / Device Role / Timing Role: Bi-directional TVS placed across differential pair and shield to suppress ESD (IEC 61000-4-2 ±15 kV contact) and burst noise. Use Value: Low 1.0 µA leakage and symmetrical clamping ensure no DC offset or signal distortion on high-speed video lines up to 3 Gbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30AHE3/A | Lower PPPM (400 W), SMA package (smaller footprint), unidirectional only. | Limited to lower-energy transients; unsuitable for load dump or bi-directional AC-coupled signals. | Select when space-constrained and surge energy is ≤400 W; verify polarity alignment during layout. |
| SMCJ33HE3/57T | Higher VWM (33 V), VBR min/max = 36.7 V / 40.6 V, same DO-214AB package and AEC-Q101 rating. | Better margin for 36 V nominal systems; slightly higher clamping voltage (53.3 V) reduces protection headroom for 3.3 V logic. | Choose for 24 V automotive systems requiring tighter VWM tolerance; confirm downstream IC withstand voltage exceeds 53.3 V. |
Compared with SMAJ30AHE3/A and SMCJ33HE3/57T, the SMCJ30HE3/57T uniquely balances 30 V system compatibility, 1500 W surge capacity, and bi-directional symmetry-making it optimal for 12 V/24 V automotive power rails where both polarity transients and high-energy threats coexist.
Availability
SMCJ30HE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, and DC-DC converter input stages requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for SMCJ30HE3/57T 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, efficiency, and automotive-grade qualification.
The SMCJ series belongs to Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power transient suppression in harsh environments-including under-hood automotive, industrial automation, and telecom infrastructure-where repeatable clamping performance and thermal stability are non-negotiable.
FAQ
What is the clamping voltage of the SMCJ30HE3/57T and how is it measured?
The SMCJ30HE3/57T has a maximum clamping voltage (VC) of 48.4 V, measured at a peak pulse current (IPPM) of 31.0 A using a standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and reflects worst-case voltage seen by downstream circuitry during transient events.
Is the SMCJ30HE3/57T suitable for automotive applications?
Yes-the SMCJ30HE3/57T carries the HE3 suffix, confirming full AEC-Q101 qualification for automotive use. It is rated for –55 °C to +150 °C operation, passes MSL Level 1 reflow, and meets JESD 201 Class 2 whisker resistance, making it appropriate for engine control, body electronics, and ADAS subsystems.
Does the SMCJ30HE3/57T have polarity markings?
No-because the SMCJ30HE3/57T is a bi-directional TVS diode, it has no cathode band or polarity marking on the DO-214AB package. Both terminals are functionally identical, enabling symmetric placement across differential lines or ungrounded power rails without orientation constraints.
What is the thermal resistance of the SMCJ30HE3/57T and how does it affect layout?
The SMCJ30HE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain rated 1500 W pulse capability, PCB layout must replicate this pad area; smaller pads increase thermal impedance and reduce surge handling.
How does the SMCJ30HE3/57T differ from the SMCJ30A-E3/57T?
The SMCJ30HE3/57T is AEC-Q101 qualified and uses JESD 201 Class 2 whisker-resistant plating, whereas the SMCJ30A-E3/57T is commercial-grade (E3 suffix only). Both share identical electrical specs and DO-214AB packaging, but only the HE3 version is approved for automotive production use per industry reliability requirements.
SMCJ30HE3/57T 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 53.5V
- Current - Peak Pulse (10/1000µs):
- 28A
- 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)
SMCJ30HE3/57T FAQ
1.How can I place an order for SMCJ30HE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ30HE3/57T 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 SMCJ30HE3/57T reliable?
The price and inventory of SMCJ30HE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ30HE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ30HE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ30HE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ30HE3/57T?
SMCJ30HE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ30HE3/57T 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 SMCJ30HE3/57T?
For technical support, including SMCJ30HE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ30HE3/57T requirements.
6.How does Aetrix verify that SMCJ30HE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ30HE3/57T 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 SMCJ30HE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ30HE3/57T?
All SMCJ30HE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ30HE3/57T, 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 SMCJ30HE3/57T part is unused and in its original packaging.
Return procedure for SMCJ30HE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ30HE3/57T Tags
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