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Vishay General Semiconductor - Diodes Division SMBJ9.0CA-M3/5B
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- Part No.:
- SMBJ9.0CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CA-M3/5B.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,498
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Product details
Overview
SMBJ9.0CA-M3/5B 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 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA test current, 15.4 V maximum clamping voltage (VC) at 39.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and telecom systems.
For engineers reviewing the SMBJ9.0CA-M3/5B datasheet, SMBJ9.0CA-M3/5B pinout, SMBJ9.0CA-M3/5B application, or SMBJ9.0CA-M3/5B equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal resistance (RθJA = 100 °C/W), RoHS/halogen-free compliance (M3 suffix), and real-world protection use cases without generic assumptions.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping performance regardless of transient polarity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 100 °C/W junction-to-ambient thermal resistance reflects standard SMB package dissipation limits under PCB pad-defined cooling conditions.
The device meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility and supports automated SMT placement. It is not AEC-Q101 qualified (M3 suffix denotes commercial-grade halogen-free RoHS compliance only), distinguishing it from HE3/HM3 automotive variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping initiates; sets safe margin below circuit operating rail. |
| VBR (min/max) | 10.0 V / 11.1 V at IT = 1 mA - Confirmed bidirectional breakdown range; defines minimum overvoltage threshold for reliable triggering. |
| VC @ IPPM | 15.4 V at 39.0 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected downstream components. |
| PPPM | 600 W - Peak pulse power handling capability; validates robustness against common lightning/inductive-switching transients. |
| IPPM | 39.0 A - Peak surge current supported at rated clamping voltage; directly maps to IEC 61000-4-5 Level 3/4 threat levels. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in high-temperature industrial enclosures without thermal shutdown. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | No cathode band; either terminal serves as anode or cathode depending on transient polarity - enables single-component protection of AC or floating DC lines. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validated clamping energy capacity for EN 61000-4-5 surge immunity up to 1 kV line-to-ground in 2 Ω/12 Ω coupling networks. |
| 15.4 V clamping voltage at 39 A | Limits voltage overshoot to safe levels for 3.3 V and 5 V logic interfaces, preventing latch-up or gate oxide damage in MOSFET drivers. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and JEDEC J-STD-20 reflow profiles without brominated flame retardants. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture sensitivity concerns or baking preconditioning. |
| Glass-passivated junction | Ensures stable VBR tolerance (±5 % typical) and <1.0 µA leakage at 9.0 V across -55 °C to +125 °C operating range. |
Applications
| Industrial Motor Control | Automotive Sensor Interface |
|---|---|
|
Use Scenario: Protection of H-bridge gate drivers and current-sense amplifiers against inductive kickback from 24 V DC motors. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across motor supply rails and signal inputs to absorb 600 W transients within nanoseconds. Use Value: Prevents destructive overvoltage on DRV8305 gate drivers and INA240 shunt amplifiers during MOSFET turn-off, maintaining functional safety integrity. |
Use Scenario: ESD and load-dump suppression on LIN bus transceivers and MEMS pressure sensor analog outputs in engine control units. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF at 0 V) bidirectional clamp between LIN data line and ground, responding in <1 ns. Use Value: Maintains signal integrity during ISO 10605 ±25 kV contact discharge and ISO 7637-2 Pulse 5a load-dump events without distorting 19.2 kbps LIN waveforms. |
| Telecom Power Supply Input | Consumer USB-C Port Protection |
|
Use Scenario: Secondary-side transient suppression on 48 V PoE injectors and telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across DC output to clamp fast-rising common-mode transients before they reach downstream DC/DC converters. Use Value: Limits output overvoltage to ≤15.4 V during 10/1000 µs 1 kV surges, avoiding brownout or reset of PMBus-configured digital controllers like UCD90120A. |
Use Scenario: Overvoltage protection on VBUS and CC lines of USB-C receptacles in portable monitors and docking stations. IC Role / Device Role / Timing Role: Standoff-rated clamp (9.0 V) placed between VBUS and GND to suppress hot-plug spikes and adapter overvoltage faults. Use Value: Blocks >20 V excursions before USB PD controller (e.g., FUSB302) latches off, preserving port enumeration and preventing cable damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA-E3/5B | Same electrical specs, but RoHS-compliant with tin-lead termination (not halogen-free); MSL Level 1, 260 °C. | Approved for commercial industrial designs where halogen content is unrestricted; slightly higher whisker risk (JESD 201 Class 1 vs. Class 2). | Select when cost-sensitive production requires legacy tin-lead solder compatibility or when halogen-free certification is not mandated. |
| SAC9.0 | Same VWM/VC, but lower PPPM (400 W), higher RθJA (125 °C/W), and DO-214AC (SMA) package - 20 % smaller footprint. | Suitable for space-constrained consumer PCBs with lower surge exposure; insufficient for IEC 61000-4-5 Level 4 compliance. | Choose only for compact, low-risk applications where 600 W headroom and SMB mechanical robustness are unnecessary. |
Compared with SMBJ9.0CA-E3/5B, the SMBJ9.0CA-M3/5B offers halogen-free compliance and enhanced whisker resistance, while SAC9.0 trades power handling and thermal margin for size reduction - making SMBJ9.0CA-M3/5B optimal for industrial-grade surge resilience where regulatory and reliability requirements are strict.
Availability
SMBJ9.0CA-M3/5B is available at Aetrix Electronics and suitable for industrial motor control, telecom power input protection, automotive sensor interface circuits, and USB-C port hardening requiring stable component supply and full traceability.
Supply support for SMBJ9.0CA-M3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and high-power handling.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive subsystems where failure modes must be mitigated without adding complexity.
FAQ
What is the clamping voltage of SMBJ9.0CA-M3/5B at its rated peak pulse current?
The SMBJ9.0CA-M3/5B has a maximum clamping voltage (VC) of 15.4 V at its rated peak pulse current (IPPM) of 39.0 A, measured using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range (-55 °C to +150 °C) and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ9.0CA-M3/5B maintains this clamping performance bidirectionally, ensuring consistent protection regardless of transient polarity.
Is SMBJ9.0CA-M3/5B suitable for automotive applications requiring AEC-Q101 qualification?
No, SMBJ9.0CA-M3/5B is not AEC-Q101 qualified. Its M3 suffix indicates halogen-free, RoHS-compliant commercial-grade construction only. For automotive use, Vishay specifies HM3_X suffix variants (e.g., SMBJ9.0CAHM3_B/I), which include full AEC-Q101 stress testing and extended temperature validation. The SMBJ9.0CA-M3/5B lacks the required qualification documentation, lot traceability, and process controls mandated for under-hood or safety-critical vehicle systems.
How does the bidirectional nature of SMBJ9.0CA-M3/5B affect its PCB layout compared to unidirectional TVS diodes?
The SMBJ9.0CA-M3/5B has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement - unlike unidirectional types (e.g., SMBJ9.0A) that require cathode alignment. This simplifies layout for AC-coupled lines, differential buses (e.g., RS-485), or floating DC rails where transient polarity is unpredictable. The SMBJ9.0CA-M3/5B's symmetrical terminals allow direct replacement of unidirectional devices only if circuit topology permits dual-polarity clamping; otherwise, grounding configuration must be reviewed.
What is the maximum reverse leakage current of SMBJ9.0CA-M3/5B at its stand-off voltage?
The SMBJ9.0CA-M3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated stand-off voltage (VWM) of 9.0 V and ambient temperature of 25 °C. This low leakage ensures minimal power loss in always-on monitoring circuits and avoids false triggering in high-impedance sensor bias networks. Leakage remains below 5 µA up to 80 % of VWM, supporting reliable operation in battery-powered or energy-harvesting systems where quiescent current is critical.
Can SMBJ9.0CA-M3/5B be used in parallel to increase surge current handling?
No - SMBJ9.0CA-M3/5B should not be paralleled to increase surge current capacity. Minor VBR tolerances (10.0–11.1 V) cause uneven current sharing, leading to thermal runaway in the lower-breakdown unit. Vishay explicitly advises against paralleling discrete TVS diodes. To handle higher surge currents, select a higher-power device (e.g., 1.5KE9.1CA) or implement staged protection with upstream current-limiting resistors and downstream TVS arrays - not multiple SMBJ9.0CA-M3/5B units.
SMBJ9.0CA-M3/5B 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-M3/5B FAQ
1.How can I place an order for SMBJ9.0CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CA-M3/5B 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-M3/5B reliable?
The price and inventory of SMBJ9.0CA-M3/5B 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-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CA-M3/5B?
SMBJ9.0CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CA-M3/5B 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-M3/5B?
For technical support, including SMBJ9.0CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CA-M3/5B requirements.
6.How does Aetrix verify that SMBJ9.0CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CA-M3/5B 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-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CA-M3/5B?
All SMBJ9.0CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CA-M3/5B, 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-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ9.0CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CA-M3/5B Tags
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