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Vishay General Semiconductor - Diodes Division SMBJ9.0AHE3_A/H
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- Part No.:
- SMBJ9.0AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0AHE3_A/H.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,204
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Product details
Overview
SMBJ9.0AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown range at 1 mA, 15.4 V maximum clamping voltage at 39.0 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs to safeguard CAN transceivers against load dump and ISO 7637-2 pulses.
For engineers reviewing the SMBJ9.0AHE3_A/H datasheet, SMBJ9.0AHE3_A/H pinout, SMBJ9.0AHE3_A/H application, or SMBJ9.0AHE3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, DO-214AA (SMB) package compatibility with automated SMT assembly, low incremental surge resistance, and verified clamping performance under repetitive 0.01% duty cycle transients.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction, diverting surge current away from downstream ICs. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repeated transient stress.
Designed for unidirectional operation, SMBJ9.0AHE3_A/H exhibits polarity-sensitive behavior - cathode marked by band - and delivers 15.4 V clamping at 39.0 A (10/1000 µs), with <1 ns response time and thermal resistance RθJA = 100 °C/W on standard 0.2" × 0.2" copper pads. It meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before leakage exceeds 1.0 µA; sets safe DC rail margin for 12 V systems. |
| VBR @ IT = 1 mA | 10.0–11.1 V - Verified avalanche onset range; ensures predictable turn-on during fast transients without premature conduction. |
| VC @ IPPM = 39.0 A | 15.4 V - Clamped voltage during 600 W surge; limits stress on protected 12 V logic or interface ICs to safe levels. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; supports robust protection against ISO 7637-2 Pulse 1/2a/5a. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); enables survivability during accidental polarity reversal events. |
| TJ max. | +150 °C - Maximum junction temperature; allows operation in under-hood automotive environments with minimal derating. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline; footprint compatible with high-volume pick-and-place and reflow processes. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to ground or low-impedance return plane; completes shunt path during transient clamping. |
| Cathode | Protected line connection / Surge sink | Connected to line being protected (e.g., CAN_H, 12 V rail); conducts avalanche current when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for ECU, body control, and ADAS modules. |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients such as load dump (ISO 16750-2) and coupled noise without degradation or failure. |
| Low clamping ratio (VC/VWM ≈ 1.71) | Minimizes overvoltage overshoot during clamping - critical for protecting 12 V tolerant interfaces like LIN, CAN FD, and sensor analog front-ends. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free assembly without moisture-related popcorning or delamination risks. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA at VWM) across temperature and lifetime - essential for low-power always-on circuits. |
Applications
| Automotive Power Rail Protection | CAN/LIN Bus Interface Protection |
|---|---|
|
Use Scenario: 12 V battery-supplied microcontroller power input in engine control units exposed to load dump (up to 35 V, 400 ms) and alternator ripple. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between VCC and GND, activated within nanoseconds upon overvoltage detection. Use Value: Limits rail voltage to ≤15.4 V during 39 A surges, preventing latch-up or permanent damage to 16-bit MCUs and PMICs. |
Use Scenario: Bidirectional data line protection on CAN_H/CAN_L in vehicle infotainment gateways subject to ESD (±8 kV contact) and ISO 10605 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS on each line (SMBJ9.0AHE3_A/H on CAN_H to GND, SMBJ9.0AHE3_A/H on CAN_L to GND) for asymmetric threat mitigation. Use Value: Clamps fast-rising ESD events below transceiver's absolute maximum rating while preserving signal integrity via low capacitance (<100 pF). |
| Industrial Sensor Signal Conditioning | Consumer Power Adapter Input Stage |
|
Use Scenario: 4–20 mA loop-powered pressure sensor module installed near motor drives, subject to inductive switching transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on the 24 V supply input, upstream of LDO regulator and op-amp signal chain. Use Value: Absorbs 600 W surges without affecting quiescent current draw (<1 µA leakage), ensuring uninterrupted sensor calibration and output stability. |
Use Scenario: AC-DC adapter primary-side input rectifier output, protecting downstream switching controller from lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Secondary-level TVS after MOV, providing precise clamping (15.4 V) where MOV let-through voltage exceeds IC rating. Use Value: Reduces residual overvoltage stress on PWM controllers and gate drivers by 30–40% versus MOV-only solutions, improving system MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A-E3/52 | Commercial-grade (non-AEC-Q101), same VWM/VC/PPPM, identical SMB package and pinout. | Approved for industrial/commercial use only; not validated for automotive temperature cycling or humidity testing. | Select when cost sensitivity outweighs automotive qualification requirements and environmental stress testing is not mandated. |
| SAC9.0 | Same VWM and VC, but lower PPPM (400 W), smaller SOD-123FL package, higher thermal resistance (RθJA = 150 °C/W). | Limited to low-energy transients (e.g., ESD-only); unsuitable for load dump or ISO 7637-2 Pulse 5a. | Choose only for space-constrained consumer PCBs where surge energy remains below 400 W and automotive compliance is unnecessary. |
Compared with SMBJ9.0AHE3_A/H, SMBJ9.0A-E3/52 offers identical electrical protection in non-automotive settings at lower cost, while SAC9.0 trades robustness and thermal performance for miniaturization - making SMBJ9.0AHE3_A/H the sole choice for AEC-Q101-compliant 12 V rail protection requiring full 600 W surge immunity.
Availability
SMBJ9.0AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and consumer power adapter designs requiring stable component supply with guaranteed AEC-Q101 qualification and traceable lot history.
Supply support for SMBJ9.0AHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where consistent clamping, low leakage, and AEC-Q101 validation are mandatory.
FAQ
What is the maximum clamping voltage of SMBJ9.0AHE3_A/H at its rated peak pulse current?
The SMBJ9.0AHE3_A/H 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 waveform. This value is guaranteed across the full operating temperature range and ensures downstream 12 V ICs remain within safe absolute maximum ratings during surge events. The SMBJ9.0AHE3_A/H achieves this with low incremental surge resistance, contributing to stable clamping performance.
Is SMBJ9.0AHE3_A/H suitable for bidirectional signal line protection?
No - SMBJ9.0AHE3_A/H is a unidirectional TVS diode, intended for DC rail or asymmetric signal protection where polarity is fixed (e.g., VCC to GND). For bidirectional applications like CAN or USB data lines, Vishay specifies devices with "CA" suffix (e.g., SMBJ9.0CA). Using SMBJ9.0AHE3_A/H on bidirectional lines would result in forward conduction during negative transients, potentially damaging the device or circuit. Always match polarity type to signal architecture.
Does SMBJ9.0AHE3_A/H meet automotive qualification standards?
Yes - SMBJ9.0AHE3_A/H carries AEC-Q101 qualification, confirmed in Vishay's ordering information and thermal characteristics notes. This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock, validating its suitability for under-hood and chassis-mounted automotive modules. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101-qualified construction, distinguishing it from commercial-grade variants like SMBJ9.0A-E3/52.
What is the thermal resistance of SMBJ9.0AHE3_A/H, and how does it affect layout design?
SMBJ9.0AHE3_A/H 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. This value assumes standard FR-4 PCB with no internal planes. To maintain TJ ≤ 150 °C during repetitive surges, designers must ensure adequate copper area and avoid excessive ambient temperature rise. Adding thermal vias or connecting pads to inner ground planes can reduce effective RθJA by up to 30%, directly improving SMBJ9.0AHE3_A/H's surge endurance.
How does the leakage current of SMBJ9.0AHE3_A/H compare to other TVS diodes in its class?
At its 9.0 V stand-off voltage (VWM), SMBJ9.0AHE3_A/H guarantees maximum reverse leakage current (ID) of 1.0 µA at 25 °C - significantly lower than many competing 600 W TVS diodes, which often specify 5–10 µA. This ultra-low leakage preserves battery life in always-on automotive modules (e.g., telematics wake-up circuits) and prevents false triggering in high-impedance sensor bias networks. The glass-passivated junction and tight process control enable this performance across -55 °C to +125 °C.
SMBJ9.0AHE3_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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ9.0AHE3_A/H FAQ
1.How can I place an order for SMBJ9.0AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0AHE3_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 SMBJ9.0AHE3_A/H reliable?
The price and inventory of SMBJ9.0AHE3_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 SMBJ9.0AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ9.0AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0AHE3_A/H?
SMBJ9.0AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0AHE3_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 SMBJ9.0AHE3_A/H?
For technical support, including SMBJ9.0AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ9.0AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0AHE3_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 SMBJ9.0AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ9.0AHE3_A/H?
All SMBJ9.0AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0AHE3_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 SMBJ9.0AHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ9.0AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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