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Vishay General Semiconductor - Diodes Division SMBJ9.0CA-M3/52
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- Part No.:
- SMBJ9.0CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CA-M3/52.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,297
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Product details
Overview
SMBJ9.0CA-M3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on signal and 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), making it suitable for protecting MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ9.0CA-M3/52 datasheet, SMBJ9.0CA-M3/52 pinout, SMBJ9.0CA-M3/52 application, or SMBJ9.0CA-M3/52 equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.71), halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on standard PCB pad layouts per DO-214AA footprint.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the 100 °C/W junction-to-ambient thermal resistance supports operation up to +150 °C junction temperature under defined PCB copper pad conditions.
The device meets J-STD-020 MSL Level 1 and withstands 260 °C lead-free reflow peaks, with matte tin-plated terminals compliant to JESD 22-B102 solderability and JESD 201 Class 2 whisker resistance. It is not AEC-Q101 qualified (M3 suffix denotes commercial-grade halogen-free RoHS only).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR min / max | 10.0 V / 11.1 V at IT = 1.0 mA - Verified breakdown threshold range ensuring reliable turn-on during transients. |
| VC @ IPPM | 15.4 V at 39.0 A - Clamped voltage seen by protected circuit during 600 W transient; limits stress on downstream components. |
| PPPM | 600 W (10/1000 µs) - Peak surge power handling capacity; determines survivability against lightning-induced or inductive-switching spikes. |
| IPPM | 39.0 A - Corresponding peak current at VC; used with PCB trace impedance to estimate let-through energy. |
| TJ max | +150 °C - Maximum junction temperature; requires thermal design with ≥0.2" × 0.2" copper pads per terminal for rated derating. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm body and 2.20 mm height; compatible with JEDEC-compliant pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, 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 (bidirectional) | Acts as cathode during positive half-cycle; accepts surge current from either direction into the junction. |
| Cathode | Transient current exit (bidirectional) | Acts as anode during negative half-cycle; completes symmetrical clamping path without external biasing. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without polarity constraints or external circuitry. |
| 600 W peak pulse power | Withstands high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) on 12 V/24 V automotive and industrial bus lines. |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes overvoltage exposure to protected ICs-critical for 3.3 V or 5 V logic interfacing via level-shifting buffers. |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance requirements for consumer, telecom, and industrial end-equipment without compromising surge robustness. |
| MSL Level 1 moisture sensitivity | Allows indefinite floor life before reflow; eliminates baking requirement and simplifies SMT line logistics. |
Applications
| Industrial Sensor Interface | Telecom Line Card Protection |
|---|---|
|
Use Scenario: Protecting analog output lines (4–20 mA) and digital I/O (RS-485) of PLC modules from ESD and inductive kickback. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal pair or between signal and ground. Use Value: Limits transient voltage to ≤15.4 V, preventing latch-up or gate oxide damage in op-amps and RS-485 transceivers. |
Use Scenario: Safeguarding Ethernet PHY interfaces and POTS line drivers against lightning-induced surges per ITU-T K.21 Basic. IC Role / Device Role / Timing Role: Primary-level TVS on differential pairs (e.g., TIP/RING) and power rails (VDD, VSS). Use Value: Absorbs 600 W pulses without degradation, maintaining signal integrity and meeting GR-1089-CORE immunity requirements. |
| Automotive Body Control Module | Consumer Power Adapter Input Stage |
|
Use Scenario: Suppressing load-dump transients on 12 V supply inputs of BCM microcontrollers and CAN transceivers. IC Role / Device Role / Timing Role: Secondary-stage clamping device downstream of primary fuses and upstream of LDO regulators. Use Value: Clamps 24 V load dump to ≤15.4 V within nanoseconds, avoiding regulator shutdown and preserving MCU operation. |
Use Scenario: Guarding AC-DC adapter input rectifier outputs and DC-DC controller feedback pins against EFT and surge events. IC Role / Device Role / Timing Role: Fast-response shunt protector across bulk capacitor or across error amplifier reference node. Use Value: Prevents false triggering of overvoltage protection circuits and avoids premature shutdown during EN 61000-4-4/5 events. |
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 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3); identical SMB package and marking. | No difference in protection performance; selected where halogen-free content is not mandated by end-equipment standards. | Choose E3/52 for cost-sensitive commercial designs without halogen restrictions. |
| SMAJ9.0CA-M3 | Lower 400 W peak pulse power; SMA package (smaller footprint, higher RθJA = 140 °C/W); same VWM/VC ratings. | Reduced surge margin; limited to lower-energy transients or space-constrained layouts where 600 W is not required. | Choose SMAJ9.0CA-M3 only when board area is critical and transient threat level is below 400 W. |
Compared with SMBJ9.0CA-E3/52, the SMBJ9.0CA-M3/52 adds halogen-free compliance without sacrificing surge rating or thermal performance; versus SMAJ9.0CA-M3, it delivers 50 % higher peak power handling and superior thermal dissipation in the larger SMB outline-making it the preferred choice for industrial and telecom applications demanding robust, compliant, and field-proven protection.
Availability
SMBJ9.0CA-M3/52 is available at Aetrix Electronics and suitable for industrial sensor interface, telecom line card protection, automotive body control module, and consumer power adapter input stage applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBJ9.0CA-M3/52 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was developed to deliver high-power, low-clamping TVS protection in standardized surface-mount packages for industrial, automotive, and telecom systems where repeatable surge immunity and automated assembly are essential.
FAQ
What is the clamping voltage of SMBJ9.0CA-M3/52 at its rated peak pulse current?
The SMBJ9.0CA-M3/52 has a maximum clamping voltage (VC) of 15.4 V at its rated peak pulse current (IPPM) of 39.0 A, measured using the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ9.0CA-M3/52 maintains this clamping performance without degradation under repetitive surge conditions at ≤0.01 % duty cycle.
Is SMBJ9.0CA-M3/52 suitable for automotive applications requiring AEC-Q101 qualification?
No, SMBJ9.0CA-M3/52 is not AEC-Q101 qualified. The "M3" suffix indicates halogen-free RoHS-compliant commercial-grade construction only. For automotive use, Vishay offers the HM3 variant (e.g., SMBJ9.0CAHM3_B/H), which carries AEC-Q101 qualification and additional stress testing. The SMBJ9.0CA-M3/52 remains appropriate for non-safety-critical industrial and telecom applications where AEC-Q101 is not mandated.
How does the bidirectional nature of SMBJ9.0CA-M3/52 affect its placement on a PCB?
The SMBJ9.0CA-M3/52 has no polarity marking and functions identically in both directions, so orientation on the PCB is not critical-unlike unidirectional TVS diodes that require correct cathode alignment. This simplifies layout, reduces assembly errors, and enables use across differential signal pairs (e.g., RS-485, CAN) without concern for signal polarity. The SMBJ9.0CA-M3/52 must still be mounted on minimum recommended 0.2" × 0.2" copper pads per terminal to meet thermal and surge ratings.
What is the maximum reverse leakage current of SMBJ9.0CA-M3/52 at its stand-off voltage?
The SMBJ9.0CA-M3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated stand-off voltage (VWM) of 9.0 V, measured at 25 °C. This low leakage ensures minimal power loss and signal distortion in high-impedance circuits such as sensor bias networks or precision reference paths. Leakage remains well below 10 µA up to +85 °C, supporting stable operation in extended-temperature environments.
Can SMBJ9.0CA-M3/52 be used in parallel to increase surge current handling?
No, SMBJ9.0CA-M3/52 should not be paralleled to increase surge current capacity. Minor parametric variations in VBR between units cause uneven current sharing, leading to thermal runaway and premature failure of the lower-breakdown unit. For higher surge ratings, select a single higher-rated device (e.g., SMBJ12CA-M3/52) or implement staged protection with upstream current-limiting resistors and downstream TVS devices. The SMBJ9.0CA-M3/52 is designed for standalone use per IEC 61000-4-5 and ISO 7637-2 compliance.
SMBJ9.0CA-M3/52 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-M3/52 FAQ
1.How can I place an order for SMBJ9.0CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CA-M3/52 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-M3/52 reliable?
The price and inventory of SMBJ9.0CA-M3/52 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-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CA-M3/52?
SMBJ9.0CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CA-M3/52 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-M3/52?
For technical support, including SMBJ9.0CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CA-M3/52 requirements.
6.How does Aetrix verify that SMBJ9.0CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CA-M3/52 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-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CA-M3/52?
All SMBJ9.0CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CA-M3/52, 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-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ9.0CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CA-M3/52 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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