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Vishay General Semiconductor - Diodes Division SMCJ28CAHE3_A/H
- Part No.:
- SMCJ28CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ28CAHE3_A/H.pdf
- Description:
- TVS DIODE 28VWM 45.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,041
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Product details
Overview
SMCJ28CAHE3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 28 V standoff voltage (VWM), 45.4 V clamping voltage at 33.0 A peak pulse current (10/1000 µs), and 1500 W peak pulse power dissipation. Used to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in automotive and industrial systems.
For engineers reviewing the SMCJ28CAHE3_A/H datasheet, SMCJ28CAHE3_A/H pinout, SMCJ28CAHE3_A/H application, or SMCJ28CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W surge rating, low thermal resistance (RθJL = 15 °C/W), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative polarity transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the SMC package supports high surge current handling with low incremental surge resistance.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its AEC-Q101 qualification confirms suitability for automotive under-hood and powertrain applications requiring long-term reliability under thermal cycling and mechanical stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 28 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown Voltage) | 31.1–34.4 V at 1 mA - Confirmed breakdown threshold range ensuring reliable triggering |
| VC (Clamping Voltage) | 45.4 V at IPPM = 33.0 A (10/1000 µs) - Limits downstream voltage stress during surge events |
| PPPM (Peak Pulse Power) | 1500 W - Sustains high-energy transients without failure under standardized waveform |
| TJ max. | +150 °C - Enables use in high-temperature environments including engine control units |
| RθJL | 15 °C/W - Low junction-to-lead thermal resistance improves power derating performance |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical PN junction; conducts during negative surges |
| Cathode | Transient current entry (positive polarity) | Other terminal of symmetrical PN junction; conducts during positive surges |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse rating | Withstands high-energy load dump and inductive kick events common in 24 V automotive systems |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body electronics, and ADAS sensor interfaces |
| Low RθJL (15 °C/W) | Supports higher sustained surge duty cycles by minimizing junction temperature rise |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in vehicle ECUs against load dump transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converters and microcontrollers. Use Value: Limits rail voltage to ≤45.4 V during 1500 W surges, preventing latch-up or gate oxide damage in downstream semiconductors. | Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional shunt protector on differential or single-ended signal lines exposed to cable discharge events. Use Value: Clamps ±45.4 V transients within <1 ns, preserving signal integrity and avoiding ADC saturation or op-amp input stage damage. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding Ethernet PHY interface power pins in outdoor telecom base station line cards subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS placed after primary gas discharge tube (GDT) to handle residual energy. Use Value: Absorbs 1500 W residual surge energy with low clamping voltage, ensuring PHY ICs remain within absolute maximum ratings. | Use Scenario: Protecting half-bridge gate drivers in smart appliance BLDC motor controllers from inductive flyback spikes. IC Role / Device Role / Timing Role: Clamp across high-side and low-side driver supply rails to suppress cross-conduction induced voltage overshoot. Use Value: Maintains rail stability during 33 A transient events, preventing false triggering or shoot-through in power stage MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28CAHE3_A/H | Lower PPPM (600 W), same VWM/VC, SMB package (smaller footprint, higher RθJA) | Not suitable for high-energy automotive load dump; limited to lower-power consumer/industrial signals | Select when board space is constrained and surge energy is ≤600 W |
| SMCJ28AHE3_A/H | Unidirectional version; identical VWM/VC/PPPM but requires correct polarity orientation | Cannot protect AC or floating nodes; requires explicit cathode/anode routing | Choose only if circuit topology guarantees unidirectional transient polarity |
Compared with SMCJ28CAHE3_A/H, SMBJ28CAHE3_A/H offers space savings at the cost of 60 % lower surge capacity, while SMCJ28AHE3_A/H delivers equal protection strength but demands strict polarity-aware layout-making the bidirectional SMCJ28CAHE3_A/H optimal for robust, polarity-agnostic designs in harsh environments.
Availability
SMCJ28CAHE3_A/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom line card surge protection, and consumer appliance motor drive protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMCJ28CAHE3_A/H 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, efficiency, and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in demanding environments-including automotive, industrial, and telecom-where consistent clamping performance, thermal robustness, and qualification-grade validation are mandatory.
FAQ
What is the clamping voltage of SMCJ28CAHE3_A/H at its rated peak pulse current?
The SMCJ28CAHE3_A/H has a maximum clamping voltage (VC) of 45.4 V when subjected to its rated peak pulse current (IPPM) of 33.0 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures predictable voltage limiting during surge events, directly protecting downstream components such as microcontrollers and gate drivers from overvoltage stress.
Is SMCJ28CAHE3_A/H suitable for automotive applications?
Yes, SMCJ28CAHE3_A/H is AEC-Q101 qualified and explicitly designed for automotive use. Its construction-glass-passivated junction, MSL Level 1 rating, and operation from –55 °C to +150 °C-meets stringent automotive reliability requirements. It is commonly deployed in engine control units, body control modules, and ADAS sensor interfaces where protection against load dump and ESD is critical.
How does the bidirectional design of SMCJ28CAHE3_A/H affect its circuit implementation?
The bidirectional design of SMCJ28CAHE3_A/H eliminates polarity marking and enables placement across any two points needing symmetrical overvoltage protection-such as differential signal pairs, AC-coupled lines, or floating power domains. Unlike unidirectional variants, it requires no anode/cathode orientation check during layout or assembly, reducing design risk and manufacturing error in high-reliability systems.
What is the thermal resistance from junction to lead (RθJL) for SMCJ28CAHE3_A/H?
The SMCJ28CAHE3_A/H has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W. This low value enhances thermal performance during repetitive surge events by efficiently transferring heat from the silicon die to the PCB copper pads via the leads, supporting stable operation even under elevated ambient temperatures in enclosed automotive or industrial enclosures.
Does SMCJ28CAHE3_A/H require special PCB layout considerations?
Yes-SMCJ28CAHE3_A/H should be mounted on minimum recommended copper pad areas (0.31" × 0.31" or 8.0 mm × 8.0 mm per terminal) to achieve rated PPPM and thermal performance. Short, low-inductance traces are essential to minimize voltage overshoot during fast transients. The SMC (DO-214AB) package also requires adherence to IPC-7351B land pattern guidelines to ensure solder joint reliability and thermal conduction.
SMCJ28CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 33A
- 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)
SMCJ28CAHE3_A/H FAQ
1.How can I place an order for SMCJ28CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ28CAHE3_A/H 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 SMCJ28CAHE3_A/H reliable?
The price and inventory of SMCJ28CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ28CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ28CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ28CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ28CAHE3_A/H?
SMCJ28CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ28CAHE3_A/H 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 SMCJ28CAHE3_A/H?
For technical support, including SMCJ28CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ28CAHE3_A/H requirements.
6.How does Aetrix verify that SMCJ28CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ28CAHE3_A/H 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 SMCJ28CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ28CAHE3_A/H?
All SMCJ28CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ28CAHE3_A/H, 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 SMCJ28CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMCJ28CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ28CAHE3_A/H Tags
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