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Vishay General Semiconductor - Diodes Division SMBG9.0CA-E3/5B
- Part No.:
- SMBG9.0CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG9.0CA-E3/5B.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBG9.0CA-E3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. 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 - deployed on signal lines of automotive sensor units and industrial I/O interfaces.
For engineers reviewing the SMBG9.0CA-E3/5B datasheet, SMBG9.0CA-E3/5B pinout, SMBG9.0CA-E3/5B application, or SMBG9.0CA-E3/5B equivalent, key selection criteria include bidirectional clamping symmetry, low leakage (<1.0 μA at VWM), AEC-Q101 qualification, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering identical clamping performance regardless of transient polarity - critical for protecting AC-coupled or differential signal paths. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, while the low-profile SMBG package supports high-density PCB layouts and meets MSL level 1 per J-STD-020.
The device sustains repetitive 600 W surges at 0.01 % duty cycle and handles non-repetitive peak currents up to 39.0 A (10/1000 μs). With an operating junction temperature range of –55 °C to +150 °C and AEC-Q101 qualification, it is engineered for under-hood automotive environments and harsh industrial settings where reliability under thermal stress is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 9 V nominal systems. |
| VBR (min/max) | 10.0 V / 11.1 V at 1 mA - Confirmed bidirectional breakdown window ensures predictable turn-on across manufacturing lot and temperature. |
| VC @ IPPM | 15.4 V at 39.0 A - Clamping voltage limits downstream IC stress during 10/1000 μs transients; enables protection of 12 V logic interfaces. |
| PPPM | 600 W - Peak pulse power handling capability with standardized 10/1000 μs waveform; validated for IEC 61000-4-5 surge immunity compliance. |
| ID @ VWM | <1.0 μA - Ultra-low reverse leakage preserves signal integrity and battery life in always-on sensor circuits. |
| TJ max. | +150 °C - High junction temperature rating supports operation in engine control modules and motor drive enclosures. |
| Package | SMBG (DO-215AA) - Surface-mount package with 5.97 mm × 4.06 mm footprint, matte tin-plated leads, and UL 94 V-0 molding compound. |
Pinout & Package
Package: SMBG (DO-215AA), bidirectional configuration with no polarity marking; symmetrical terminals suitable for AC or differential line protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Identical electrical role in either direction; connects to protected line (e.g., CAN_H or RS-485 A) without orientation dependency. |
| Terminal 2 | Anode/Cathode (bidirectional) | Paired terminal forming symmetrical clamping path; requires equal-length routing to maintain impedance balance in differential applications. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - suitable for powertrain and ADAS sensor protection. |
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients from load dump or inductive switching without degradation; supports IEC 61000-4-5 Level 3/4 compliance. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during clamping - critical for safeguarding 12 V microcontrollers and transceivers with tight absolute maximum ratings. |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-induced damage; eliminates pre-bake requirement for production lines. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage over lifetime - essential for long-term field reliability in sealed industrial enclosures. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure and temperature sensors in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and ECU input to limit transient excursions to ≤15.4 V. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADC front-ends while maintaining signal fidelity below 9.0 V normal operation. |
Use Scenario: Shielding half-duplex RS-485 transceivers (e.g., SN65HVD230) on factory floor communication buses from ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS on A/B differential pair, leveraging symmetrical clamping to preserve common-mode rejection. Use Value: Maintains data integrity during 4 kV contact ESD events (IEC 61000-4-2) without disrupting bus timing or requiring signal re-synchronization. |
| Consumer USB Port Protection | Power Supply Input Stage |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in portable medical devices against user-handling ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp (CJ ≈ 200 pF at 0 V) placed adjacent to USB connector to shunt transients before reaching PHY. Use Value: Limits clamping voltage to 15.4 V while adding <1 ns response delay - avoids data corruption during hot-plug and maintains full 480 Mbps signaling integrity. |
Use Scenario: Secondary-side transient suppression on 12 V DC input rails of programmable logic controllers subjected to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Parallel-connected TVS across input capacitor to clamp fast-rising spikes (≤100 ns rise time) before they propagate to DC-DC converters. Use Value: Absorbs 600 W surges without derating at +85 °C ambient, extending hold-up time and preventing brownout resets during machine stop/start cycles. |
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 VWM (9.0 V) and VC (15.4 V), but lower PPPM = 600 W (same rating) and higher IPPM = 39.0 A - identical clamping performance; SMBJ has slightly larger footprint (DO-214AA). | SMBJ offers marginally better thermal dissipation due to larger pad area; preferred for high-reliability industrial designs with >100,000-cycle surge exposure. | Select SMBJ9.0CA-E3/5B when board space allows larger package and long-term thermal cycling endurance is prioritized over minimal footprint. |
| 1.5KE9.1CA | Higher PPPM = 1500 W, but axial DO-15 package; VC = 14.5 V at 103 A - tighter clamping but incompatible with SMT automation and high-density layouts. | Used in legacy through-hole power supplies; unsuitable for automotive or portable electronics due to manual assembly and vibration sensitivity. | Choose 1.5KE9.1CA only for retrofitting existing through-hole designs where rework cost exceeds redesign; not recommended for new SMT-based platforms. |
Compared with SMBG9.0CA-E3/5B, SMBJ9.0CA-E3/5B provides identical electrical protection in a mechanically more robust package, while 1.5KE9.1CA delivers higher surge capacity at the expense of modern manufacturability and board-level reliability - making SMBG9.0CA-E3/5B the optimal balance for automated, space-constrained, AEC-Q101-compliant applications.
Availability
SMBG9.0CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 interface hardening, and consumer USB port ESD shielding requiring stable component supply across high-mix production runs.
Supply support for SMBG9.0CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-speed, high-energy transient suppression in automotive, industrial, and communications infrastructure where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of SMBG9.0CA-E3/5B at its rated peak pulse current?
The SMBG9.0CA-E3/5B exhibits a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 39.0 A using the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and guarantees that downstream circuitry remains within safe voltage limits during surge events. The SMBG9.0CA-E3/5B maintains this clamping performance bidirectionally, ensuring consistent protection regardless of transient polarity.
Is SMBG9.0CA-E3/5B suitable for automotive applications?
Yes, SMBG9.0CA-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control, body electronics, and ADAS sensor interfaces. Its –55 °C to +150 °C operating junction temperature range, glass-passivated junction, and MSL Level 1 reflow compatibility meet stringent automotive manufacturing and field reliability requirements. The SMBG9.0CA-E3/5B is referenced in Vishay's automotive-grade TVS documentation for load-dump and ISO 7637-2 pulse suppression.
How does the bidirectional design of SMBG9.0CA-E3/5B affect its circuit implementation?
The SMBG9.0CA-E3/5B has no polarity marking and functions identically in both directions, eliminating orientation concerns during placement and simplifying layout for AC-coupled or differential signals like CAN, RS-485, or USB. Unlike unidirectional TVS diodes, it protects against positive and negative transients without requiring external series components or dual-device configurations. This symmetry makes SMBG9.0CA-E3/5B ideal for balanced line protection where signal integrity and layout simplicity are critical.
What is the maximum reverse leakage current of SMBG9.0CA-E3/5B at its stand-off voltage?
At its 9.0 V stand-off voltage (VWM), the SMBG9.0CA-E3/5B specifies a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This ultra-low leakage ensures minimal power loss in battery-powered systems and prevents signal distortion in high-impedance sensor interfaces. The SMBG9.0CA-E3/5B maintains leakage below 5.0 μA even at +85 °C ambient, supporting reliable operation in thermally demanding environments.
Does SMBG9.0CA-E3/5B require special PCB layout considerations?
Yes - for optimal surge performance, Vishay specifies mounting SMBG9.0CA-E3/5B on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power dissipation. Short, wide traces minimize inductance, and symmetric routing is recommended for differential applications. The SMBG9.0CA-E3/5B's SMBG (DO-215AA) package also requires adherence to J-STD-020 MSL Level 1 reflow profile, with peak temperature not exceeding 260 °C.
SMBG9.0CA-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- 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 (SMBG)
SMBG9.0CA-E3/5B FAQ
1.How can I place an order for SMBG9.0CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG9.0CA-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 SMBG9.0CA-E3/5B reliable?
The price and inventory of SMBG9.0CA-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 SMBG9.0CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG9.0CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG9.0CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG9.0CA-E3/5B?
SMBG9.0CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG9.0CA-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 SMBG9.0CA-E3/5B?
For technical support, including SMBG9.0CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG9.0CA-E3/5B requirements.
6.How does Aetrix verify that SMBG9.0CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG9.0CA-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 SMBG9.0CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG9.0CA-E3/5B?
All SMBG9.0CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG9.0CA-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 SMBG9.0CA-E3/5B part is unused and in its original packaging.
Return procedure for SMBG9.0CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG9.0CA-E3/5B Tags
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