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Vishay General Semiconductor - Diodes Division SMBJ9.0CAHE3_A/H
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- Part No.:
- SMBJ9.0CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0CAHE3_A/H.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,763
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Product details
Overview
SMBJ9.0CAHE3_A/H 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 or power lines. It features a 9.0 V standoff voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA, 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), used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment.
For engineers reviewing the SMBJ9.0CAHE3_A/H datasheet, SMBJ9.0CAHE3_A/H pinout, SMBJ9.0CAHE3_A/H application, or SMBJ9.0CAHE3_A/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and bidirectional clamping behavior critical for surge protection design validation.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR min/max (10.0–11.1 V), VC (15.4 V), and IPPM (39.0 A) in either direction. Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance under repetitive 10/1000 µs transients at 0.01% duty cycle.
Designed for PCB-level ESD and lightning surge protection, it meets UL 497B recognition (QVGQ2) and J-STD-020 MSL Level 1 (260 °C reflow). The device is AEC-Q101 qualified (HE3 suffix), enabling use in automotive electronics where reliability under thermal cycling and mechanical stress is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.0 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 10.0–11.1 V at IT = 1 mA - Ensures reliable, repeatable avalanche initiation during overvoltage events |
| VC (Clamping Voltage) | 15.4 V at IPPM = 39.0 A - Limits downstream voltage stress during 600 W transient, protecting 12 V logic interfaces |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs) - Sustains high-energy surges common in inductive load switching and telecom line faults |
| TJ max. | +150 °C - Enables operation in under-hood automotive or enclosed industrial enclosures without derating |
| RθJA | 100 °C/W - Requires minimal copper pad area (0.2" × 0.2") for thermal management in space-constrained layouts |
| AEC-Q101 Qualified | Yes (HE3 suffix) - Validated for automotive-grade reliability including temperature cycling, HAST, and mechanical shock |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional - no polarity marking; symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity event) | Conducts surge current into ground path when voltage falls below –VWM |
| Cathode | Transient current entry (positive polarity event) | Conducts surge current into ground path when voltage exceeds +VWM |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware layout in AC-coupled or differential lines |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation when mounted per recommended pad layout |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics - supports PPAP documentation and long-term field reliability |
| MSL Level 1 rating | Compatible with standard SMT reflow profiles up to 260 °C peak - no pre-baking required for production assembly |
| UL 497B recognition | Approved for telecom and industrial protector applications - simplifies system-level safety certification |
Applications
| Industrial Motor Control | Automotive Body Electronics |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensors against inductive kickback from 24 V DC motors. IC Role / Device Role / Timing Role: Bidirectional TVS placed across motor driver output pins to clamp flyback spikes before they reach MCU GPIO or op-amp inputs. Use Value: Limits transient voltage to ≤15.4 V, preventing latch-up or oxide damage in 3.3 V/5 V interface ICs while surviving >100,000 switching cycles. |
Use Scenario: Surge suppression on LIN bus lines and door module sensor inputs exposed to battery dump and load dump events. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between LIN signal and chassis ground to absorb ISO 7637-2 Pulse 1/2a/5a energy. Use Value: Maintains 9.0 V VWM margin above 12 V nominal supply while clamping to 15.4 V - compatible with LIN transceiver input tolerance. |
| Telecom Power Interface | Consumer Sensor Hub |
Use Scenario: Input protection for PoE-powered Ethernet switches handling induced surges from nearby AC wiring or lightning coupling. IC Role / Device Role / Timing Role: Bidirectional TVS on 48 V DC input rail upstream of DC/DC converter to limit transient overshoot during surge injection. Use Value: Withstands 600 W pulses without parametric shift - preserves converter enable logic integrity during EN 61000-4-5 testing. |
Use Scenario: ESD and cable discharge protection for I²C/SPI lines connecting environmental sensors (temp/humidity/pressure) to host MCU. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector entry point to shunt HBM ±8 kV discharges before reaching sensor ASIC. Use Value: Clamps sub-100 ns ESD events to <16 V, preventing data corruption or reset glitches in low-voltage sensor interfaces. |
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-E3/52 | Same electrical specs; RoHS-compliant commercial grade (non-AEC-Q101); MSL Level 1, same SMB package | Lacks automotive qualification - suitable for industrial/commercial designs without AEC requirements | Select when AEC-Q101 is not mandated and cost optimization is prioritized. |
| SMCJ9.0CAHE3_A/H | Same VWM/VBR/VC but higher PPPM (1500 W); larger SMC (DO-214AB) package; RθJA = 35 °C/W | Supports higher surge currents (100 A IPPM) - used where IEC 61000-4-5 Level 5 compliance is required | Choose when system-level surge test levels exceed 600 W capability and board space allows larger footprint. |
Compared with SMBJ9.0CAHE3_A/H, SMBJ9.0CA-E3/52 offers identical protection performance without automotive qualification, while SMCJ9.0CAHE3_A/H provides 2.5× higher surge power in a larger package - selection depends on qualification scope and system-level surge test requirements.
Availability
SMBJ9.0CAHE3_A/H is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and telecom power interface applications requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ9.0CAHE3_A/H 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 application-specific performance.
The SMBJ series targets robust, surface-mount transient suppression for automotive, industrial, and telecom systems - engineered for high surge immunity, low clamping voltage, and AEC-Q101 compliance where failure is not an option.
FAQ
What does the "CA" suffix indicate in SMBJ9.0CAHE3_A/H?
The "CA" suffix denotes a bidirectional configuration: SMBJ9.0CAHE3_A/H conducts and clamps symmetrically for both positive and negative voltage transients, unlike unidirectional "A" variants that only protect one polarity. This makes SMBJ9.0CAHE3_A/H ideal for AC-coupled lines, differential buses, or any application where polarity reversal is possible during surge events.
Is SMBJ9.0CAHE3_A/H suitable for automotive applications?
Yes - the "HE3" suffix confirms SMBJ9.0CAHE3_A/H is AEC-Q101 qualified, having passed stress tests including temperature cycling, humidity bias, and mechanical shock. It is approved for use in automotive body electronics, infotainment, and ADAS sensor interfaces where sustained reliability under harsh conditions is required.
What is the maximum clamping voltage of SMBJ9.0CAHE3_A/H at rated surge current?
The maximum clamping voltage (VC) of SMBJ9.0CAHE3_A/H is 15.4 V at its rated peak pulse current (IPPM) of 39.0 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures downstream 12 V logic circuits remain within safe voltage limits during surge events.
How does SMBJ9.0CAHE3_A/H differ from SMBJ9.0AHE3_A/H?
SMBJ9.0CAHE3_A/H is bidirectional with symmetrical clamping in both polarities, while SMBJ9.0AHE3_A/H is unidirectional - it only clamps positive transients and requires correct cathode orientation. The "CA" version eliminates polarity concerns in AC or floating signal paths, whereas the "A" version offers slightly lower leakage in DC-biased applications.
What PCB layout guidance applies to SMBJ9.0CAHE3_A/H for optimal thermal performance?
For optimal thermal performance, SMBJ9.0CAHE3_A/H must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's recommended pad layout. This achieves the specified RθJA of 100 °C/W; reducing pad size increases junction temperature and risks premature failure during repetitive surges.
SMBJ9.0CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 (SMBJ)
SMBJ9.0CAHE3_A/H FAQ
1.How can I place an order for SMBJ9.0CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0CAHE3_A/H 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 SMBJ9.0CAHE3_A/H reliable?
The price and inventory of SMBJ9.0CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ9.0CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0CAHE3_A/H?
SMBJ9.0CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0CAHE3_A/H 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 SMBJ9.0CAHE3_A/H?
For technical support, including SMBJ9.0CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0CAHE3_A/H requirements.
6.How does Aetrix verify that SMBJ9.0CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0CAHE3_A/H 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 SMBJ9.0CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ9.0CAHE3_A/H?
All SMBJ9.0CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0CAHE3_A/H, 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 SMBJ9.0CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ9.0CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0CAHE3_A/H Tags
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