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Vishay General Semiconductor - Diodes Division SMBJ15CAHE3_B/H
- Part No.:
- SMBJ15CAHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15CAHE3_B/H.pdf
- Description:
- 600W,15V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,479
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Product details
Overview
SMBJ15CAHE3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage at 24.6 A peak pulse current (IPPM), and 600 W peak pulse power capability with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ15CAHE3_B/H datasheet, SMBJ15CAHE3_B/H pinout, SMBJ15CAHE3_B/H application, or SMBJ15CAHE3_B/H equivalent, key selection criteria include bidirectional surge protection capability, AEC-Q101 qualification status, clamping voltage margin relative to protected circuit's absolute maximum rating, and thermal performance under repetitive surge conditions.
Technical Context
This device operates as a voltage-clamping protector using an avalanche breakdown mechanism. Its bidirectional structure enables symmetric transient suppression across both polarities without polarity sensitivity, making it suitable for AC-coupled or floating signal paths. The glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM).
Thermal design relies on low RθJA (100 °C/W) and RθJL (20 °C/W), with derating required above 25 °C ambient. It meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR min / max | 16.7 V / 18.5 V - breakdown voltage range at 1.0 mA test current; ensures reliable turn-on within defined tolerance band. |
| VC @ IPPM | 24.4 V - clamped voltage at 24.6 A peak pulse current; determines worst-case overvoltage seen by downstream components. |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform; quantifies single-event surge energy absorption capacity. |
| ID @ VWM | ≤1.0 µA - maximum reverse leakage at 15 V; critical for low-power or high-impedance signal line protection. |
| TJ max | +150 °C - maximum junction temperature; sets upper limit for thermal design and reliability under sustained power dissipation. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve identical roles in bidirectional operation; no cathode band marking; layout must accommodate equal trace impedance to ground or reference plane. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals or ungrounded lines without polarity constraints - eliminates need for dual unidirectional devices. |
| 600 W peak pulse power | Supports robust immunity against IEC 61000-4-5 Level 4 surges (4 kV line-to-line) when properly laid out with low-inductance grounding. |
| AEC-Q101 qualification | Validates suitability for automotive infotainment, body control, and ADAS sensor interfaces where long-term reliability under thermal stress is mandatory. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking - reduces manufacturing complexity and cost in high-volume SMT lines. |
| Glass-passivated junction | Ensures stable VBR over time and temperature, with minimal parameter drift during 1000+ surge events - critical for mission-critical protection. |
Applications
| Industrial Sensor Interface | Automotive CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to relay coil flyback and motor drive noise in factory automation cabinets. IC Role / Device Role / Timing Role: Voltage clamping element placed directly at sensor connector entry point to shunt transients before reaching ADC input or signal conditioner. Use Value: Limits induced overvoltage to ≤24.4 V during 24.6 A surges, preserving 16-bit ADC accuracy and preventing latch-up in precision op-amps. |
Use Scenario: Safeguarding CANH/CANL differential pair against ESD and load dump-induced spikes in vehicle body control modules. IC Role / Device Role / Timing Role: Bidirectional TVS mounted across CAN bus lines near connector, referenced to chassis ground via low-inductance path. Use Value: Clamps ±24.4 V transients within <1 ns response time, maintaining CAN signal integrity and meeting ISO 16750-2 pulse 5a requirements. |
| Telecom Power Input Stage | Consumer USB Port ESD Protection |
|
Use Scenario: Secondary-side overvoltage suppression on 12 V DC input rails feeding PoE-powered switches and base station RF front-ends. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing inductive switching spikes from upstream DC-DC converter gate drivers. Use Value: Withstands 600 W pulses without degradation, enabling compliance with ITU-T K.20 telecom surge immunity standards. |
Use Scenario: Board-level ESD protection for USB 2.0 data lines and VBUS in smart home hubs and portable media players. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor placed between USB connector and controller PHY, minimizing signal distortion. Use Value: Delivers <1.0 µA leakage at 15 V while clamping ±8 kV contact discharge to <24.4 V - preserves USB eye diagram and full-speed timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-E3/52 | Commercial-grade version without AEC-Q101 qualification; same VWM, VC, and PPPM specs. | Lacks automotive reliability validation; unsuitable for automotive OEM or Tier 1 production programs. | Select when cost sensitivity outweighs long-term field reliability requirements in non-automotive industrial use. |
| SAC15CA | Same VWM and bidirectional function but in smaller SOD-123 package; lower PPPM (400 W) and higher VC (27 V at rated IPPM). | Reduced surge handling margin; limited to lower-energy transients like IEC 61000-4-2 ESD only. | Choose for space-constrained consumer designs where 600 W capability is unnecessary and PCB area is premium. |
Compared with SMBJ15CAHE3_B/H, SMBJ15CA-E3/52 offers identical electrical protection but lacks automotive qualification, while SAC15CA trades surge robustness and clamping performance for footprint reduction - requiring careful trade-off analysis based on system-level surge threat profile and layout constraints.
Availability
SMBJ15CAHE3_B/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive CAN bus nodes, telecom power inputs, and consumer USB port protection requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBJ15CAHE3_B/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 SMBJ series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of SMBJ15CAHE3_B/H at its rated peak pulse current?
The SMBJ15CAHE3_B/H has a maximum clamping voltage (VC) of 24.4 V at its rated peak pulse current (IPPM) of 24.6 A with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is SMBJ15CAHE3_B/H suitable for automotive applications?
Yes, SMBJ15CAHE3_B/H is AEC-Q101 qualified, confirming its suitability for automotive applications including body electronics, infotainment systems, and sensor interfaces. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101-qualified construction, validated for temperature cycling, high-temperature reverse bias, and mechanical shock per automotive reliability standards.
Does SMBJ15CAHE3_B/H have polarity markings on the package?
No, SMBJ15CAHE3_B/H is a bidirectional TVS diode and carries no cathode band or polarity marking on the SMB (DO-214AA) package. Its symmetrical terminal structure allows either end to connect to the line or ground side of the protected circuit - simplifying layout and eliminating orientation errors during automated placement.
What is the maximum reverse leakage current for SMBJ15CAHE3_B/H at its stand-off voltage?
The SMBJ15CAHE3_B/H exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 15 V stand-off voltage (VWM), measured at 25 °C ambient. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes standby power loss in battery-operated devices.
How does the thermal resistance of SMBJ15CAHE3_B/H affect PCB layout?
SMBJ15CAHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W, which requires adequate copper pour area (minimum 0.2" x 0.2" pads per terminal) to maintain junction temperature below 150 °C during repetitive surge events. Layout must minimize trace inductance and maximize thermal conduction to internal ground planes to avoid thermal runaway under sustained transient loads.
SMBJ15CAHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 24.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ15CAHE3_B/H FAQ
1.How can I place an order for SMBJ15CAHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15CAHE3_B/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 SMBJ15CAHE3_B/H reliable?
The price and inventory of SMBJ15CAHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ15CAHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ15CAHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15CAHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15CAHE3_B/H?
SMBJ15CAHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15CAHE3_B/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 SMBJ15CAHE3_B/H?
For technical support, including SMBJ15CAHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15CAHE3_B/H requirements.
6.How does Aetrix verify that SMBJ15CAHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ15CAHE3_B/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 SMBJ15CAHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ15CAHE3_B/H?
All SMBJ15CAHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15CAHE3_B/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 SMBJ15CAHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ15CAHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15CAHE3_B/H Tags
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