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Vishay General Semiconductor - Diodes Division SMBJ9.0AHM3_B/I
- Part No.:
- SMBJ9.0AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0AHM3_B/I.pdf
- Description:
- 600W,9.0V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,924
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Product details
Overview
SMBJ9.0AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 9.0 V stand-off 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 rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ9.0AHM3_B/I datasheet, SMBJ9.0AHM3_B/I pinout, SMBJ9.0AHM3_B/I application, or SMBJ9.0AHM3_B/I equivalent, this page delivers verified electrical specs, thermal derating behavior, clamping performance under surge conditions, AEC-Q101 qualification status, and halogen-free RoHS-compliant sourcing details for automotive-grade transient protection design.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its VBR range (10.0–11.1 V). Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD, lightning-induced surges, and inductive switching spikes on DC rails and low-speed signal paths.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, with junction temperature rated from –55 °C to +150 °C. The device is qualified to AEC-Q101 and meets J-STD-020 MSL Level 1, supporting reflow soldering up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - maximum continuous reverse operating voltage before clamping begins; sets safe margin above nominal 5–9 V supply rails. |
| VBR (min/max) | 10.0 V / 11.1 V at IT = 1 mA - defines reliable avalanche initiation window; ensures consistent turn-on across production lots. |
| VC @ IPPM | 15.4 V at 39.0 A - clamped voltage during 10/1000 µs surge; limits downstream stress on protected 12 V logic or gate drivers. |
| PPPM | 600 W - peak pulse power handling capability; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity testing. |
| ID @ VWM | 10 µA max - ultra-low leakage at stand-off; avoids unnecessary quiescent current drain in battery-powered sensors. |
| TJ max. | +150 °C - enables operation in under-hood automotive or high-ambient industrial environments without thermal shutdown. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward surge events (IFSM = 100 A). |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 9 V rail); initiates reverse-biased avalanche when V > VBR to shunt surge current. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 surges without derating at ambient ≤25 °C. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics applications requiring zero-failure reliability over temperature cycling and vibration. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life compliance. |
| MSL Level 1 (260 °C peak) | Allows single-reflow assembly without moisture sensitivity concerns; eliminates bake-out requirement prior to SMT placement. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage exposure to protected ICs - critical for 12 V tolerant microcontrollers and CAN transceivers. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of BCM microcontrollers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between fused 12 V rail and LDO input. Use Value: Limits transient voltage to ≤15.4 V during 35 V/100 ms load dump events, preventing LDO overvoltage failure. |
Use Scenario: Shielding 24 V digital input channels from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff protector on optocoupler input side, upstream of series current-limiting resistor. Use Value: Clamps 1 kV/42 Ω surges to <16 V within nanoseconds, preserving optocoupler CTR and enabling SIL2-level functional safety compliance. |
| Consumer Power Adapter Output | Automotive Sensor Signal Line |
|
Use Scenario: Safeguarding USB-C PD output rails against ESD and hot-swap transients in multi-port adapters. IC Role / Device Role / Timing Role: Secondary-side TVS on 5–20 V output bus, adjacent to DC-DC post-regulator. Use Value: Absorbs ±15 kV contact ESD (IEC 61000-4-2) with <1 ns response, maintaining regulated output stability during transient events. |
Use Scenario: Guarding LIN bus or analog sensor outputs (e.g., pressure, temp) against battery disconnect spikes in engine bays. IC Role / Device Role / Timing Role: Point-of-entry TVS on sensor harness connector, referenced to chassis ground. Use Value: Withstands 100 A/10/1000 µs surges while holding clamped voltage below 16 V, ensuring sensor IC survival per ISO 7637-2 Pulse 1/2a. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0AHE3_B/I | Same electrical specs, but RoHS-compliant without halogen-free certification; no AEC-Q101 qualification. | Approved for commercial/industrial use only; not permitted in automotive OEM designs requiring AEC-Q101 traceability. | Select SMBJ9.0AHM3_B/I when halogen-free content and automotive qualification are mandatory per Tier 1 BOM requirements. |
| SMAJ9.0A-M3 | Lower PPPM (400 W), larger VBR tolerance (10.0–12.2 V), SMA package (smaller thermal mass, higher RθJA = 140 °C/W). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Choose SMBJ9.0AHM3_B/I over SMAJ9.0A-M3 where 600 W surge handling and AEC-Q101 validation are required. |
Compared with SMBJ9.0AHE3_B/I and SMAJ9.0A-M3, SMBJ9.0AHM3_B/I uniquely combines halogen-free construction, AEC-Q101 qualification, and full 600 W surge capability in the SMB footprint - making it the only option qualified for automotive power domain protection where both environmental compliance and high-energy transient resilience are non-negotiable.
Availability
SMBJ9.0AHM3_B/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and consumer power adapter output safeguarding requiring stable component supply across long-lifecycle programs.
Supply support for SMBJ9.0AHM3_B/I 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, thermal performance, and automotive-grade validation.
The SMBJ series targets high-energy transient suppression in harsh environments; engineered specifically for automotive, industrial, and telecom infrastructure where AEC-Q101 compliance and 600 W surge resilience are essential design criteria.
FAQ
What is the maximum clamping voltage of SMBJ9.0AHM3_B/I at its rated peak pulse current?
The SMBJ9.0AHM3_B/I has a maximum clamping voltage (VC) of 15.4 V at its specified peak pulse current (IPPM) of 39.0 A, measured using the standard 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and ensures protected circuitry remains below critical overvoltage thresholds during surge events. The SMBJ9.0AHM3_B/I maintains this clamping performance consistently due to its tightly controlled VBR distribution and low dynamic impedance.
Is SMBJ9.0AHM3_B/I qualified for automotive applications?
Yes, SMBJ9.0AHM3_B/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix in its ordering code - indicating halogen-free, RoHS-compliant construction with full automotive reliability testing including temperature cycling, humidity bias, and mechanical shock. This qualification makes SMBJ9.0AHM3_B/I suitable for under-hood and cabin applications such as body control modules, sensor interfaces, and infotainment power rails where zero-defect operation is mandated.
What does the "B/I" suffix mean in SMBJ9.0AHM3_B/I?
The "B/I" suffix in SMBJ9.0AHM3_B/I denotes packaging configuration: "B" indicates tape-and-reel format with embossed carrier tape, and "I" specifies a 13-inch reel containing 3200 units - per Vishay's ordering convention in document 88392. This differs from "B/H", which uses a 7-inch reel (750 units). Both share identical electrical and thermal specifications; the suffix solely identifies reel size and quantity for logistics and SMT line feeding.
How does SMBJ9.0AHM3_B/I compare to bidirectional TVS diodes like SMBJ9.0CA?
SMBJ9.0AHM3_B/I is unidirectional and optimized for DC rail protection where polarity is fixed - offering lower leakage (10 µA vs. 20 µA for SMBJ9.0CA) and tighter VBR control. In contrast, SMBJ9.0CA provides symmetrical clamping for AC or floating signal lines but sacrifices some precision in stand-off voltage definition. For 9 V supply protection, SMBJ9.0AHM3_B/I delivers superior DC blocking and lower system power loss, while SMBJ9.0CA would require additional polarity-aware circuit design to avoid unintended conduction.
What is the thermal resistance from junction to ambient for SMBJ9.0AHM3_B/I?
The SMBJ9.0AHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air conditions and defines the worst-case temperature rise under continuous 5.0 W power dissipation. For pulsed operation, transient thermal impedance curves (Fig. 5 in datasheet 88392) show significantly lower effective resistance - enabling safe handling of short-duration 600 W surges without exceeding TJ(max) = 150 °C.
SMBJ9.0AHM3_B/I 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ9.0AHM3_B/I FAQ
1.How can I place an order for SMBJ9.0AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0AHM3_B/I 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 SMBJ9.0AHM3_B/I reliable?
The price and inventory of SMBJ9.0AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ9.0AHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ9.0AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0AHM3_B/I?
SMBJ9.0AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0AHM3_B/I 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 SMBJ9.0AHM3_B/I?
For technical support, including SMBJ9.0AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0AHM3_B/I requirements.
6.How does Aetrix verify that SMBJ9.0AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0AHM3_B/I 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 SMBJ9.0AHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ9.0AHM3_B/I?
All SMBJ9.0AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0AHM3_B/I, 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 SMBJ9.0AHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ9.0AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0AHM3_B/I Tags
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