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Vishay General Semiconductor - Diodes Division SMBJ9.0CAHE3/52
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- Part No.:
- SMBJ9.0CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CAHE3/52.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,688
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Product details
Overview
SMBJ9.0CAHE3/52 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 or power lines. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA, 15.4 V maximum clamping voltage (VC) at 39.0 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform). It protects MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment against ESD and inductive switching surges.
For engineers reviewing the SMBJ9.0CAHE3/52 datasheet, SMBJ9.0CAHE3/52 pinout, SMBJ9.0CAHE3/52 application, or SMBJ9.0CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamping protector-responding within picoseconds to transient overvoltages by entering avalanche conduction when reverse voltage exceeds VBR. Its bidirectional symmetry enables protection of AC-coupled or differential signal paths without polarity constraints.
It delivers 600 W peak pulse power under standardized 10/1000 µs waveform conditions, with clamping voltage tightly controlled at 15.4 V up to 39.0 A, and exhibits low incremental surge resistance for stable voltage limiting during fast transients. The glass-passivated junction ensures robust reliability and repeatable breakdown behavior across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin. |
| VBR (min/max) | 10.0 V / 11.1 V at IT = 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on across production lot. |
| VC @ IPPM | 15.4 V at 39.0 A - Clamped voltage during worst-case 10/1000 µs surge; directly limits stress on downstream ICs. |
| PPPM | 600 W - Peak transient energy absorption capacity; supports high-energy lightning or inductive kick events. |
| TJ max. | +150 °C - Maximum junction temperature rating; enables operation in under-hood or enclosed industrial environments. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs board-level thermal design. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability per JESD22-A108; suitable for non-safety-critical vehicle ECUs. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, MSL Level 1 compliant (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse bias) | One terminal of symmetrical PN junction; conducts during positive or negative overvoltage excursion. |
| Cathode | Transient current entry (reverse bias) | Second terminal of symmetrical junction; identical electrical role to Anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded lines without polarity concerns. |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from relay switching, motor commutation, or nearby lightning strikes. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including infotainment, body control, and ADAS sensor interfaces. |
| Low clamping voltage (15.4 V @ 39 A) | Minimizes voltage overshoot on protected nodes, preserving margin for 12 V rail or 3.3 V logic ICs. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity handling or baking requirements. |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Protection of encoder feedback lines and gate driver inputs against back-EMF spikes during IGBT switching. IC Role / Device Role / Timing Role: Voltage clamping element placed at PCB entry point of analog/digital signal traces. Use Value: Limits transient voltage to ≤15.4 V, preventing latch-up or oxide damage in microcontrollers and isolated amplifiers. |
Use Scenario: Shielding LIN bus or analog pressure sensor outputs from load dump and jump-start surges in vehicle cabins. IC Role / Device Role / Timing Role: Bidirectional transient suppressor mounted adjacent to connector interface, before signal conditioning circuitry. Use Value: Maintains signal integrity during 12 V system transients up to ±100 V, meeting ISO 7637-2 Pulse 1/2a/5a immunity requirements. |
| Telecom Power Supply Rails | Consumer USB-C Port Protection |
Use Scenario: Safeguarding 5–12 V DC input rails of PoE-powered switches and base station RF modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC distribution network. Use Value: Absorbs 600 W surges without degradation, enabling compliance with IEC 61000-4-5 Level 3 (2 kV line-earth). |
Use Scenario: Protecting USB-C CC and VBUS lines from ESD and hot-plug induced transients in portable docking stations. IC Role / Device Role / Timing Role: Board-level TVS placed inline with high-speed data and power pins, before USB controller IC. Use Value: Responds in <1 ps to ±15 kV contact ESD (IEC 61000-4-2), clamping below 20 V to prevent PHY damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA-E3/52 | Commercial-grade version; lacks AEC-Q101 qualification and halogen-free certification. | Approved for industrial/commercial use only; not permitted in automotive production BOMs. | Select when cost sensitivity outweighs automotive qualification requirements and RoHS/halogen-free mandates are relaxed. |
| SAC9.0CA | Same VWM/VBR/VC specs but in smaller SOD-123FL package; lower PPPM (400 W) and higher RθJA (150 °C/W). | Limited to lower-energy transients and space-constrained consumer designs; unsuitable for high-power industrial surges. | Choose only for compact PCBs where 600 W surge headroom is not required and thermal budget allows higher junction rise. |
Compared with SMBJ9.0CAHE3/52, the E3 variant trades automotive qualification for lower cost, while SAC9.0CA sacrifices surge robustness and thermal performance for footprint reduction-neither is pin-compatible due to differing package outlines (SMB vs. SOD-123FL).
Availability
SMBJ9.0CAHE3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power supply rails, and consumer USB-C port protection requiring stable component supply and AEC-Q101-compliant sourcing.
Supply support for SMBJ9.0CAHE3/52 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, with design focus on automotive, industrial, and telecom infrastructure where robustness, repeatable clamping, and AEC-Q101 validation are mandatory.
FAQ
What does the "HE3" suffix indicate in SMBJ9.0CAHE3/52?
The HE3 suffix denotes that SMBJ9.0CAHE3/52 is RoHS-compliant and AEC-Q101 qualified, distinguishing it from commercial-grade variants like E3 or M3. This certification validates its suitability for automotive applications such as body electronics and sensor modules, with extended temperature cycling, humidity testing, and mechanical shock verification performed per JESD22 standards.
Is SMBJ9.0CAHE3/52 unidirectional or bidirectional?
SMBJ9.0CAHE3/52 is a bidirectional TVS diode, as confirmed by the "CA" designation in its part number and electrical specifications applying equally in both polarities. It has no cathode band marking and provides symmetric clamping for AC signals, differential buses, or floating lines-unlike unidirectional "A" versions which conduct only in reverse bias.
What is the maximum clamping voltage of SMBJ9.0CAHE3/52 under surge conditions?
The maximum clamping voltage of SMBJ9.0CAHE3/52 is 15.4 V at 39.0 A peak pulse current (IPPM), measured using the standardized 10/1000 µs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case transient events and is guaranteed across the full operating temperature range (–55 to +150 °C).
Can SMBJ9.0CAHE3/52 be used in place of SMBJ9.0AHE3/52?
No-SMBJ9.0CAHE3/52 and SMBJ9.0AHE3/52 are functionally distinct: the former is bidirectional (CA), the latter unidirectional (A). Substituting them requires verifying circuit polarity, grounding scheme, and transient directionality. Using SMBJ9.0AHE3/52 in a bidirectional application risks failure during positive-going surges, as it blocks forward conduction.
What PCB pad layout is recommended for optimal thermal performance of SMBJ9.0CAHE3/52?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal for SMBJ9.0CAHE3/52 to achieve the rated RθJA of 100 °C/W. Reducing pad area increases thermal resistance and reduces surge current handling; doubling pad size improves heat dissipation but does not alter the 600 W PPPM rating, which is defined under the standard test condition.
SMBJ9.0CAHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 39A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBJ)
SMBJ9.0CAHE3/52 FAQ
1.How can I place an order for SMBJ9.0CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CAHE3/52 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 SMBJ9.0CAHE3/52 reliable?
The price and inventory of SMBJ9.0CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CAHE3/52?
SMBJ9.0CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CAHE3/52 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 SMBJ9.0CAHE3/52?
For technical support, including SMBJ9.0CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CAHE3/52 requirements.
6.How does Aetrix verify that SMBJ9.0CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CAHE3/52 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 SMBJ9.0CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CAHE3/52?
All SMBJ9.0CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CAHE3/52, 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 SMBJ9.0CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ9.0CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CAHE3/52 Tags
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