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Vishay General Semiconductor - Diodes Division SMBG9.0CAHE3/52
- Part No.:
- SMBG9.0CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG9.0CAHE3/52.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,532
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Product details
Overview
SMBG9.0CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of 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, 600 W peak pulse power (10/1000 μs), clamping voltage of 15.4 V at 39.0 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG9.0CAHE3/52 datasheet, SMBG9.0CAHE3/52 pinout, SMBG9.0CAHE3/52 application, or SMBG9.0CAHE3/52 equivalent, key selection criteria include bidirectional surge handling, low clamping ratio (VC/VBR ≈ 1.45), MSL Level 1 reflow compatibility, RoHS compliance with AEC-Q101 qualification, and suitability for CAN/LIN bus, sensor I/O, and 12 V automotive power rail protection.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, IPPM, and VC specifications in either direction - confirmed by Vishay's "Electrical Characteristics" table for CA-suffix devices. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), critical for protecting sensitive analog and digital inputs against ESD and load dump transients.
The device is rated for 150 °C maximum junction temperature and exhibits 100 °C/W typical junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads. Its 600 W peak pulse power rating applies under strict 0.01% duty cycle conditions per JEDEC JESD22-A114, making it suitable for infrequent but high-energy surges like ISO 7637-2 Pulse 1/2a/5a.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before conduction begins; sets safe margin below system nominal voltage (e.g., 12 V automotive rails). |
| VBR @ IT = 1 mA | 10.0–11.1 V - Breakdown threshold range; defines precise clamping onset and ensures consistent protection across production lots. |
| VC @ IPPM = 39.0 A | 15.4 V - Clamped voltage during 600 W transient; limits stress on downstream ICs to safe levels during surge events. |
| PPPM | 600 W - Peak pulse power handling (10/1000 μs waveform); supports robust immunity to ISO 16750-2 and IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | <1.0 μA - Ultra-low reverse leakage at stand-off voltage; prevents signal distortion or battery drain in always-on circuits. |
| TJmax | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments without derating. |
| AEC-Q101 | Qualified - Validated for automotive applications per stress test requirements including HTGB, HTRB, and TCT; supports PPAP documentation. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable. Case meets UL 94 V-0 flammability rating; matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Identical electrical behavior in both directions; no cathode band marking - used as common node for differential or single-ended line protection. |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal forming symmetrical clamping path; enables placement across any two points requiring bidirectional overvoltage suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN H/L) without polarity concerns. |
| 600 W peak pulse power | Withstands high-energy transients such as automotive load dump (ISO 7637-2 Pulse 5a) without degradation when mounted per recommended pad layout. |
| AEC-Q101 qualification | Validates reliability for automotive ECUs, body control modules, and ADAS sensors - eliminates need for additional qualification testing. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture sensitivity concerns - simplifies SMT manufacturing and reduces BOM risk. |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage over temperature and lifetime - critical for long-term field reliability in harsh environments. |
Applications
| Automotive LIN Bus Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting LIN transceiver I/O pins from ESD (IEC 61000-4-2) and coupled transients in vehicle door modules and seat controllers. IC Role / Device Role / Timing Role: Bidirectional TVS placed between LIN_H and LIN_L lines or from LIN to ground, clamping surges within nanoseconds. Use Value: Maintains LIN signal integrity below 15.4 V clamp level while surviving repeated 8 kV contact ESD events - validated per AEC-Q101 stress tests. |
Use Scenario: Safeguarding 4–20 mA current loop or analog voltage outputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Placed across sensor output and ground to shunt induced surges from motor drives or relay switching noise. Use Value: Limits transient-induced offset error with <1.0 μA leakage at 9.0 V, preserving measurement accuracy in precision analog front-ends. |
| 12 V Automotive Power Rail Clamp | USB 2.0 Data Line ESD Suppression |
|
Use Scenario: Secondary overvoltage protection downstream of DC/DC converters in infotainment head units exposed to ISO 7637-2 Pulse 1 (inductive switch-off). IC Role / Device Role / Timing Role: Connected between +12 V rail and chassis ground to clamp negative-going transients up to −100 V. Use Value: Delivers 600 W surge capability with 15.4 V clamping - prevents brownout or latch-up in microcontrollers powered from protected rail. |
Use Scenario: ESD protection for D+ and D− lines in USB 2.0 peripheral ports subjected to human-body-model (HBM) discharges. IC Role / Device Role / Timing Role: Bidirectional TVS placed differentially across D+/D− to suppress ±8 kV ESD without distorting 480 Mbps data eye. Use Value: Low 15.4 V clamping and <1.0 μA leakage preserve signal rise/fall times and minimize bit error rate in high-speed USB links. |
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 | Same VWM (9.0 V), VBR (10.0–11.1 V), and VC (15.4 V), but rated for 600 W in SMB (DO-214AA) package - slightly larger footprint and higher RθJA (125 °C/W). | Preferred where existing PCB layout uses SMB footprint or where higher thermal mass is acceptable; not AEC-Q101 qualified. | Select SMBJ9.0CA only if AEC-Q101 is not required and SMB pad layout is already committed. |
| SMCJ9.0CA | Same electrical specs but in larger SMC (DO-214AB) package - 1500 W PPPM, 100 A IPPM, and lower clamping ratio (VC = 14.4 V @ 77.5 A); RθJA = 50 °C/W. | Better suited for high-repetition surge environments (e.g., industrial motor controls) or where board space allows larger package. | Choose SMCJ9.0CA when surge repetition rate exceeds 0.01% duty cycle or when lower thermal resistance is critical. |
Compared with SMBG9.0CAHE3/52, SMBJ9.0CA offers identical protection performance in a non-automotive-qualified SMB package, while SMCJ9.0CA delivers higher surge endurance and thermal capability in a larger footprint - selection depends on AEC-Q101 requirement, board area constraints, and thermal management needs.
Availability
SMBG9.0CAHE3/52 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and USB/serial communication port protection requiring stable component supply and full traceability.
Supply support for SMBG9.0CAHE3/52 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and automotive-grade qualification.
The SMBG series is engineered specifically for high-reliability surface-mount transient suppression in space-constrained automotive and industrial systems - combining AEC-Q101 validation, low-profile DO-215AA packaging, and repeatable clamping performance.
FAQ
What is the polarity configuration of SMBG9.0CAHE3/52?
SMBG9.0CAHE3/52 is a bidirectional TVS diode with symmetrical anode/cathode terminals and no polarity marking. Its electrical characteristics - including VBR, VC, and IPPM - are identical in both directions, enabling use across differential lines or ungrounded signal paths without orientation concerns. This is explicitly confirmed in Vishay's datasheet for all CA-suffix variants.
Does SMBG9.0CAHE3/52 meet automotive qualification standards?
Yes, SMBG9.0CAHE3/52 carries the HE3 suffix, indicating RoHS compliance and full AEC-Q101 qualification per Vishay's ordering information table and mechanical data section. It has passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT), making it suitable for under-hood and safety-critical automotive applications.
What is the maximum clamping voltage for SMBG9.0CAHE3/52 during a surge event?
The maximum clamping voltage (VC) for SMBG9.0CAHE3/52 is 15.4 V at a peak pulse current (IPPM) of 39.0 A, measured with a 10/1000 μs waveform. This value is specified in the "Electrical Characteristics" table and represents the upper limit of voltage seen by protected circuitry during worst-case transient conditions.
Can SMBG9.0CAHE3/52 be used in USB 2.0 data line protection?
Yes, SMBG9.0CAHE3/52 is suitable for USB 2.0 D+/D− line protection due to its bidirectional symmetry, low 15.4 V clamping voltage, and sub-1.0 μA leakage at 9.0 V. Its fast response time (<1 ns) and low capacitance (typ. 200 pF at 0 V, per Fig. 4) prevent signal integrity degradation at 480 Mbps, meeting USB-IF ESD robustness requirements.
What is the thermal resistance of SMBG9.0CAHE3/52 under standard mounting conditions?
SMBG9.0CAHE3/52 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 per terminal, as specified in the "Thermal Characteristics" table. This value assumes FR-4 PCB with no internal copper planes; actual RθJA improves with enhanced thermal land design or internal layer copper pours.
SMBG9.0CAHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG9.0CAHE3/52 FAQ
1.How can I place an order for SMBG9.0CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG9.0CAHE3/52 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 SMBG9.0CAHE3/52 reliable?
The price and inventory of SMBG9.0CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG9.0CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG9.0CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG9.0CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG9.0CAHE3/52?
SMBG9.0CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG9.0CAHE3/52 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 SMBG9.0CAHE3/52?
For technical support, including SMBG9.0CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG9.0CAHE3/52 requirements.
6.How does Aetrix verify that SMBG9.0CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG9.0CAHE3/52 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 SMBG9.0CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG9.0CAHE3/52?
All SMBG9.0CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG9.0CAHE3/52, 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 SMBG9.0CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG9.0CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG9.0CAHE3/52 Tags
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