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Vishay General Semiconductor - Diodes Division SMBJ9.0A-E3/5B
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- Part No.:
- SMBJ9.0A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0A-E3/5B.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,518
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Product details
Overview
SMBJ9.0A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1.0 mA, 15.4 V maximum clamping voltage (VC) at 39.0 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - deployed to safeguard MOSFETs, ICs, and sensor interfaces against ESD and inductive switching transients.
For engineers reviewing the SMBJ9.0A-E3/5B datasheet, SMBJ9.0A-E3/5B pinout, SMBJ9.0A-E3/5B application, or SMBJ9.0A-E3/5B equivalent, key selection considerations include its unidirectional polarity, SMB (DO-214AA) package compatibility with automated SMT assembly, 150 °C max junction temperature, and AEC-Q101 qualification availability in HE3 variants - critical for automotive power rail protection design validation.
Technical Context
This TVS diode operates as a clamping device: under normal conditions it presents high impedance (>1 MΩ leakage at 9.0 V), but triggers into low-impedance conduction when reverse voltage exceeds VBR, limiting transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive surges.
The SMBJ9.0A-E3/5B is rated for 600 W peak pulse power (10/1000 µs), 100 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits low incremental surge resistance - enabling fast response (<1 ns) and precise voltage clamping without significant overshoot during lightning or load-dump events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.0 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 12 V systems. |
| VBR (Breakdown Voltage) | 10.0–11.1 V at 1.0 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal supply while avoiding false trips. |
| VC (Clamping Voltage) | 15.4 V at 39.0 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; determines downstream component voltage stress. |
| PPPM (Peak Pulse Power) | 600 W - Sustains standardized lightning/surge pulses per IEC 61000-4-5; validates suitability for industrial and automotive Level 3/4 protection. |
| IPPM (Peak Pulse Current) | 39.0 A - Peak current handled at VC; directly correlates with PCB trace width and grounding path design requirements. |
| TJmax | 150 °C - Maximum junction temperature; supports operation in under-hood automotive or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - Industry-standard 2-pin SMD outline with 5.59 mm × 4.06 mm footprint; optimized for thermal dissipation on 5.0 mm × 5.0 mm copper pads. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking. Matte tin-plated leads, RoHS-compliant, MSL Level 1 (260 °C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Input/Line side | Connected to protected line (e.g., 12 V rail); carries surge current into device during clamping. |
| Cathode (banded end) | Ground reference | Connected to system ground plane; provides low-inductance return path essential for effective transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 Level 3 (1 kV/2 kV surge) for industrial control and automotive subsystems. |
| 15.4 V clamping at 39 A | Ensures protected ICs (e.g., CAN transceivers, microcontrollers) remain below absolute maximum ratings during worst-case transients. |
| Glass passivated junction | Delivers stable, repeatable avalanche performance across temperature (-55 °C to +150 °C) and lifetime cycling. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking; reduces manufacturing overhead and handling risk. |
| AEC-Q101 qualified variant available | Supports automotive-grade deployment in body electronics, ADAS sensors, and infotainment power supplies when ordered as HE3 suffix. |
Applications
| Automotive Body Control Module (BCM) Power Input | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protects 12 V supply input of BCM against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between fused battery rail and DC-DC converter input. Use Value: Limits transient voltage to ≤15.4 V, preventing damage to upstream LDOs and MCU power domains during 120 V/50 ms surges. |
Use Scenario: Shields 24 V digital input channels of PLC I/O modules from field-wiring induced transients and ESD. IC Role / Device Role / Timing Role: Front-end TVS on each optocoupler input leg, mounted directly at connector entry point. Use Value: Clamps 1 kV/500 A surges to <16 V within <1 ns, preserving signal integrity and enabling >100,000 surge cycles per channel. |
| Consumer Appliance Motor Drive Power Stage | Telecom Base Station Sensor Interface |
|
Use Scenario: Guards gate driver ICs and MOSFETs in BLDC motor inverters against inductive kickback from coil commutation. IC Role / Device Role / Timing Role: Localized TVS across VDD-GND of half-bridge drivers, adjacent to decoupling capacitors. Use Value: Absorbs 600 W spikes without thermal runaway, maintaining driver functionality and preventing shoot-through failures. |
Use Scenario: Protects analog front-end of environmental sensors (temp/humidity/pressure) connected to remote telecom cabinets. IC Role / Device Role / Timing Role: Low-leakage (≤10 µA at 9.0 V) TVS on sensor signal lines, placed before ADC input stage. Use Value: Prevents latch-up in precision op-amps and ADCs during lightning-induced common-mode surges on long sensor cables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A-M3/5B | Halogen-free, RoHS-compliant variant; identical electrical specs and SMB package. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU public infrastructure projects). | Direct drop-in replacement for SMBJ9.0A-E3/5B where halogen-free bill-of-materials is required. |
| SMAJ9.0A-E3/61 | Lower 400 W PPPM, 14.5 V VC at 27.5 A, SMA (DO-214AC) package - smaller footprint (4.5 mm × 2.7 mm) and lower thermal mass. | Not suitable for 600 W surge environments; limited to consumer-grade or low-energy signal-line protection. | Select only for space-constrained designs with verified <400 W surge exposure; not interchangeable in automotive or industrial power rails. |
Compared with SMBJ9.0A-E3/5B, the M3/5B offers identical protection performance with halogen-free construction, while the SMAJ9.0A-E3/61 trades 33 % lower surge capacity and reduced thermal robustness for board area savings - making SMBJ9.0A-E3/5B the preferred choice for mission-critical 600 W-rated applications.
Availability
SMBJ9.0A-E3/5B is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, appliance motor drives, and telecom sensor interface designs requiring stable component supply and full production traceability.
Supply support for SMBJ9.0A-E3/5B 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ9.0A-E3/5B at its rated peak pulse current?
The SMBJ9.0A-E3/5B has a maximum clamping voltage (VC) of 15.4 V at 39.0 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components like MCUs or transceivers remain within their absolute maximum ratings. The SMBJ9.0A-E3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ9.0A-E3/5B suitable for automotive applications?
SMBJ9.0A-E3/5B itself is commercial-grade (RoHS-compliant E3 suffix), but Vishay offers the functionally identical SMBJ9.0AHE3_B variant that is AEC-Q101 qualified for automotive use. The SMBJ9.0A-E3/5B shares the same electrical characteristics, SMB package, and thermal behavior - so design-in validation performed with SMBJ9.0A-E3/5B directly transfers to the HE3 version. For production automotive systems, specify the HE3 suffix; SMBJ9.0A-E3/5B remains ideal for prototyping and industrial applications.
What does the "/5B" suffix indicate in SMBJ9.0A-E3/5B?
The "/5B" suffix in SMBJ9.0A-E3/5B specifies the packaging configuration: 3200 units per 13-inch diameter plastic tape-and-reel. This format is optimized for high-volume SMT placement using standard pick-and-place equipment. The "E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads. Together, "E3/5B" confirms both environmental compliance and logistics readiness - distinguishing it from "/52" (7-inch reel, 750 units) or "HE3" (AEC-Q101 qualified) variants.
How does SMBJ9.0A-E3/5B compare to bidirectional TVS diodes like SMBJ9.0CA?
The SMBJ9.0A-E3/5B is unidirectional and intended for DC line protection where polarity is fixed (e.g., +12 V rail to ground), offering lower leakage and tighter VBR tolerance than bidirectional types. In contrast, SMBJ9.0CA protects AC or polarity-agnostic signals (e.g., data lines) but exhibits higher reverse leakage and dual-threshold breakdown. For SMBJ9.0A-E3/5B, the cathode band must be oriented toward ground; misorientation prevents clamping. Use SMBJ9.0A-E3/5B only in confirmed unidirectional topologies.
What is the thermal resistance and derating behavior of SMBJ9.0A-E3/5B?
SMBJ9.0A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 5.0 mm × 5.0 mm copper pads. Its peak pulse power must be derated linearly above 25 °C ambient: at 85 °C, PPPM drops to ~65 % of 600 W (~390 W). Continuous power dissipation (PD) is 5.0 W at 50 °C on infinite heatsink. These values are confirmed in Vishay's Fig. 2 and Table "THERMAL CHARACTERISTICS" - essential for thermal layout validation in enclosed or high-temperature environments.
SMBJ9.0A-E3/5B 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ9.0A-E3/5B FAQ
1.How can I place an order for SMBJ9.0A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0A-E3/5B 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 SMBJ9.0A-E3/5B reliable?
The price and inventory of SMBJ9.0A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ9.0A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0A-E3/5B?
SMBJ9.0A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0A-E3/5B 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 SMBJ9.0A-E3/5B?
For technical support, including SMBJ9.0A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0A-E3/5B requirements.
6.How does Aetrix verify that SMBJ9.0A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0A-E3/5B 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 SMBJ9.0A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ9.0A-E3/5B?
All SMBJ9.0A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0A-E3/5B, 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 SMBJ9.0A-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ9.0A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0A-E3/5B Tags
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