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Vishay General Semiconductor - Diodes Division SMBJ9.0CA-E3/52
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- Part No.:
- SMBJ9.0CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CA-E3/52.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:393
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Product details
Overview
SMBJ9.0CA-E3/52 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), 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), commonly deployed to protect MOSFET gates and sensor signal lines in industrial motor drives.
For engineers reviewing the SMBJ9.0CA-E3/52 datasheet, SMBJ9.0CA-E3/52 pinout, SMBJ9.0CA-E3/52 application, or SMBJ9.0CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.71), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction enables fast response time (<1 ns) and stable VBR (10.0–11.1 V at 1 mA), while the low incremental surge resistance ensures minimal voltage overshoot during transient events.
The SMBJ9.0CA-E3/52 is rated for repetitive 10/1000 µs surges at 0.01% duty cycle and derates linearly above 25 °C ambient per Fig. 2. Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ = –55 to +150 °C) define safe operating boundaries under sustained surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse stand-off voltage before clamping begins; sets minimum system operating margin. |
| VBR min/max | 10.0 V / 11.1 V at IT = 1 mA - Confirmed breakdown threshold range defining turn-on consistency across production lots. |
| VC @ IPPM | 15.4 V at 39.0 A - Clamped voltage during 10/1000 µs transient; determines maximum stress on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling capacity; defines survivability against lightning-induced or inductive-switching surges. |
| IPPM | 39.0 A - Maximum non-repetitive surge current supported; used to size PCB trace width and pad area (5.0 mm × 5.0 mm recommended). |
| TJ max | +150 °C - Maximum junction temperature; constrains thermal design when multiple surges occur in rapid succession. |
| Package | SMB (DO-214AA) - Surface-mount outline with 2.18 mm min. lead length and 5.59 mm max. body length; compatible with J-STD-020 MSL Level 1 reflow. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration with no polarity marking; terminals are matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (negative polarity) | Accepts reverse surge energy during negative half-cycle; connects to protected line or ground reference. |
| Cathode | Transient current entry point (positive polarity) | Accepts reverse surge energy during positive half-cycle; symmetric role to Anode in bidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity testing (4 kV line-to-ground) with margin. |
| Clamping ratio VC/VWM = 1.71 | Minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profile use without baking preconditioning. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current (ID ≤ 1.0 µA at VWM) across temperature and humidity. |
Applications
| Industrial Motor Drives | Automotive Sensor Interfaces |
|---|---|
|
Use Scenario: Protecting gate drivers and feedback signal lines from inductive kickback during IGBT/MOSFET switching in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between gate and source terminals to suppress >100 V transients within <1 ns. Use Value: Prevents gate oxide rupture in power semiconductors by limiting VGS to ≤15.4 V during 39 A surge events. |
Use Scenario: Shielding LIN bus or analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in 12 V automotive systems. IC Role / Device Role / Timing Role: Line-side TVS connected between signal line and chassis ground to shunt ESD and ISO 7637-2 Pulse 1/2a energy. Use Value: Maintains signal integrity below 9.0 V standby while clamping 10/1000 µs pulses to 15.4 V, meeting AEC-Q101 reliability requirements. |
| Telecom Power Supplies | Consumer USB Port Protection |
|
Use Scenario: Safeguarding secondary-side DC outputs (e.g., +5 V, +12 V rails) in AC/DC adapters against lightning-induced surges entering via AC mains. IC Role / Device Role / Timing Role: Secondary-side crowbar device mounted across output capacitor to clamp overvoltage before it reaches downstream regulators. Use Value: Limits output rail excursion to 15.4 V during 600 W surges, preventing latch-up or burnout in LDOs and microcontrollers. |
Use Scenario: Adding robustness to USB 2.0 data lines (D+/D−) against human-body-model (HBM) ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed differentially across D+ and D− to suppress ±8 kV contact discharge per IEC 61000-4-2. Use Value: Delivers sub-1 ns response and <1.0 µA leakage at 9.0 V, preserving signal rise time while meeting USB-IF ESD compliance thresholds. |
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-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No difference in circuit function or layout; selected where halogen-free material compliance is mandated. | Choose when environmental compliance requires halogen-free construction without altering design or qualification. |
| SMCJ9.0CA-E3/52 | Same VWM/VC but in larger SMC (DO-214AB) package; 1500 W PPPM, 100 A IPPM, RθJA = 40 °C/W. | Higher surge capacity suits high-energy industrial environments; requires larger PCB footprint and thermal relief. | Choose when system-level surge testing exceeds 600 W or when extended thermal margin is needed for repeated transients. |
Compared with SMBJ9.0CA-E3/52, the M3 variant offers identical protection performance with halogen-free materials, while the SMCJ9.0CA-E3/52 provides 2.5× higher surge power handling at the cost of 2.5× larger board area and different thermal management requirements.
Availability
SMBJ9.0CA-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive sensor interfaces, telecom power supplies, and consumer USB port protection requiring stable component supply and full RoHS compliance.
Supply support for SMBJ9.0CA-E3/52 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, and protection devices with emphasis on reliability and application-specific optimization.
The SMBJ series was engineered for high-volume surface-mount surge protection in space-constrained designs, balancing clamping performance, thermal robustness, and automated assembly compatibility.
FAQ
What is the maximum clamping voltage of SMBJ9.0CA-E3/52 under a 10/1000 µs surge?
The SMBJ9.0CA-E3/52 has a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 39.0 A using the standardized 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88392 and defines the upper voltage limit imposed on protected circuits during surge events. The SMBJ9.0CA-E3/52 maintains this clamping performance across its specified operating temperature range.
Is SMBJ9.0CA-E3/52 suitable for automotive applications?
SMBJ9.0CA-E3/52 is not AEC-Q101 qualified; it is commercial-grade (RoHS-compliant, E3 suffix). For automotive use, Vishay specifies the HE3 or HM3 variants (e.g., SMBJ9.0CAHE3_B/H), which undergo AEC-Q101 stress testing. The SMBJ9.0CA-E3/52 may be used in non-safety-critical aftermarket or infotainment subsystems only after full system-level validation. Always verify qualification status via the full ordering code before deployment.
How does the bidirectional nature of SMBJ9.0CA-E3/52 affect PCB layout?
The SMBJ9.0CA-E3/52 has no polarity marking and functions identically in both directions, simplifying PCB layout by eliminating orientation constraints during placement. It can be mounted across any two nodes requiring symmetrical overvoltage protection-such as differential signal pairs or AC-coupled lines-without concern for anode/cathode alignment. This reduces assembly errors and supports automated optical inspection (AOI) without polarity verification steps.
What is the thermal resistance of SMBJ9.0CA-E3/52, and how does it impact surge repetition rate?
The SMBJ9.0CA-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. At 0.01% duty cycle (1 pulse per 10,000 µs), this allows full 600 W dissipation without exceeding TJ = 150 °C. Higher repetition rates require derating per Figure 2 in document 88392; for example, at 0.1% duty cycle, peak power must be reduced to ~300 W to avoid thermal runaway.
Can SMBJ9.0CA-E3/52 replace unidirectional TVS diodes like SMBJ9.0A-E3/52 in existing designs?
No-SMBJ9.0CA-E3/52 is bidirectional and lacks polarity marking, whereas SMBJ9.0A-E3/52 is unidirectional with cathode band identification. Substituting them without circuit review risks incorrect connection in DC-biased applications, potentially causing forward conduction or failure to clamp. Use SMBJ9.0CA-E3/52 only where bidirectional protection is explicitly required, such as AC signal lines or floating buses. The SMBJ9.0CA-E3/52 must be validated in the target application's voltage polarity and bias conditions.
SMBJ9.0CA-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ9.0CA-E3/52 FAQ
1.How can I place an order for SMBJ9.0CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CA-E3/52 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 SMBJ9.0CA-E3/52 reliable?
The price and inventory of SMBJ9.0CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CA-E3/52?
SMBJ9.0CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CA-E3/52 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 SMBJ9.0CA-E3/52?
For technical support, including SMBJ9.0CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CA-E3/52 requirements.
6.How does Aetrix verify that SMBJ9.0CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CA-E3/52 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 SMBJ9.0CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CA-E3/52?
All SMBJ9.0CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CA-E3/52, 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 SMBJ9.0CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ9.0CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CA-E3/52 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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