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Vishay General Semiconductor - Diodes Division SMBJ9.0AHM3/I
- Part No.:
- SMBJ9.0AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0AHM3/I.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,345
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Product details
Overview
SMBJ9.0AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust 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 voltage (VBR) at 1 mA, 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 in automotive ECUs, industrial sensor interfaces, and telecom power supplies.
For engineers reviewing the SMBJ9.0AHM3/I datasheet, SMBJ9.0AHM3/I pinout, SMBJ9.0AHM3/I application, or SMBJ9.0AHM3/I 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 halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
The SMBJ9.0AHM3/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its VBR threshold (10.0–11.1 V), thereby clamping transients to ≤15.4 V at 39.0 A. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at 9.0 V).
Designed for automated SMT assembly, it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, and its SMB package provides 5.0 mm × 5.0 mm copper pad thermal dissipation support. The "HM3" suffix confirms halogen-free, RoHS-compliant, commercial-grade construction with AEC-Q101 qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 10.0–11.1 V at 1.0 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal rail. |
| VC (Clamping Voltage) | 15.4 V at 39.0 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for downstream IC survival. |
| PPPM (Peak Pulse Power) | 600 W - Sustains high-energy transients (e.g., ISO 7637-2 pulse 1/2a/5a) without failure under defined test conditions. |
| IPPM (Peak Pulse Current) | 39.0 A - Maximum non-repetitive surge current handled; determines minimum trace width and fuse coordination. |
| TJmax | +150 °C - Enables operation in under-hood automotive or enclosed industrial environments without derating. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs heatsinking requirements. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-banded unidirectional configuration. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (non-banded end) | Forward current entry / low-side reference | Connected to ground or lower-potential node; establishes reference for clamping action. |
| Cathode (banded end) | Reverse voltage sensing / clamping output | Connected to protected line (e.g., 9 V rail); conducts avalanche current when VIN > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands automotive load-dump and inductive switching surges without degradation. |
| AEC-Q101 qualified | Validated for automotive electronics per stress-test requirements including HTOL, TCT, and ESD. |
| Halogen-free & RoHS-compliant (HM3) | Meets IEC 61249-2-21 and JEDEC JESD201 Class 2 whisker resistance for long-term reliability. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., EFT bursts), improving system immunity. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or baking. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protects 9 V supply rail in BCM from ISO 7637-2 pulse 1 (inductive switch-off) and pulse 5a (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS clamps reverse transients to ≤15.4 V, preventing damage to MCU power pins and CAN transceivers. Use Value: Enables compliance with automotive EMC standards while maintaining <1 µA leakage at 9 V to avoid battery drain. |
Use Scenario: Shields 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Acts as primary front-end clamp before optocoupler or Schmitt-trigger input stage. Use Value: Limits transient voltage to safe levels within 1 ns response time, preserving signal integrity and reducing false triggers. |
| Telecom Power Supply Output Stage | Consumer Appliance Motor Driver Interface |
|
Use Scenario: Guards secondary-side 9 V bias rail in AC/DC adapters against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Fast-acting shunt device that diverts surge energy away from LDO regulators and communication ICs. Use Value: Achieves 600 W surge handling without series impedance, eliminating need for additional current-limiting resistors. |
Use Scenario: Safeguards microcontroller GPIO lines connected to brushed DC motor feedback circuits. IC Role / Device Role / Timing Role: Suppresses commutation spikes generated during motor turn-off, protecting logic-level inputs. Use Value: Maintains 9.0 V stand-off margin above motor driver's logic-high threshold, preventing unintended resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0AHE3/I | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs HM3). | Lacks halogen-free certification; unsuitable for strict environmental compliance programs (e.g., EU automotive Tier 1). | Select SMBJ9.0AHE3/I only if halogen content is not regulated in target market or application. |
| SMAJ9.0A-HF | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (140 °C/W). | Not suitable for high-energy automotive transients; limited thermal margin in compact layouts. | Choose SMAJ9.0A-HF only for space-constrained consumer designs with lower surge exposure. |
Compared with SMBJ9.0AHM3/I, the HE3 variant trades halogen-free compliance for broader distributor availability, while the SMAJ9.0A-HF sacrifices 33 % peak power and thermal performance for footprint reduction - making SMBJ9.0AHM3/I the optimal choice for AEC-Q101–mandated, high-reliability 9 V rail protection.
Availability
SMBJ9.0AHM3/I is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input stages, and telecom power supply outputs requiring stable component supply across multi-year production cycles.
Supply support for SMBJ9.0AHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The SMBJ series targets high-energy transient suppression in harsh environments, with design focus on AEC-Q101 qualification, low clamping voltage, and robust SMT manufacturability for automotive and industrial power systems.
FAQ
What is the clamping voltage of SMBJ9.0AHM3/I at its rated peak pulse current?
The SMBJ9.0AHM3/I has a maximum clamping voltage (VC) of 15.4 V at 39.0 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. It is confirmed in the Vishay datasheet revision 09-Jan-2024, Document Number 88392, Table on page 2.
Is SMBJ9.0AHM3/I qualified for automotive applications?
Yes, SMBJ9.0AHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix in its ordering code. This qualification covers stress tests including high-temperature operating life, temperature cycling, and electrostatic discharge - validating its suitability for under-hood and chassis-mounted automotive electronics. The qualification status is explicitly noted in the Vishay datasheet section "MECHANICAL DATA" and "ORDERING INFORMATION".
What does the "HM3" suffix mean in SMBJ9.0AHM3/I?
The "HM3" suffix in SMBJ9.0AHM3/I denotes halogen-free, RoHS-compliant, commercial-grade construction meeting JEDEC JESD201 Class 2 whisker resistance requirements. It distinguishes the part from E3 (RoHS only) and HE3/HM3 variants with AEC-Q101 qualification. This suffix is defined in the "MECHANICAL DATA" section of the Vishay datasheet (Document Number 88392, page 1).
Can SMBJ9.0AHM3/I be used in bidirectional protection circuits?
No, SMBJ9.0AHM3/I is a unidirectional TVS diode, identified by its cathode band marking and specified electrical characteristics for single-polarity operation. For bidirectional protection, Vishay specifies the CA suffix (e.g., SMBJ9.0CA). Using SMBJ9.0AHM3/I in bidirectional configurations would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit.
What is the thermal resistance junction-to-ambient for SMBJ9.0AHM3/I?
The typical thermal resistance junction-to-ambient (RθJA) for SMBJ9.0AHM3/I is 100 °C/W, measured on a standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout per JEDEC standards. This value is critical for estimating junction temperature rise under continuous power dissipation and is listed in the "THERMAL CHARACTERISTICS" table on page 3 of the Vishay datasheet (Document Number 88392).
SMBJ9.0AHM3/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:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for SMBJ9.0AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0AHM3/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/I reliable?
The price and inventory of SMBJ9.0AHM3/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/I is usually 5 days.
3.What payment methods are accepted for SMBJ9.0AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0AHM3/I?
SMBJ9.0AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0AHM3/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/I?
For technical support, including SMBJ9.0AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0AHM3/I requirements.
6.How does Aetrix verify that SMBJ9.0AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0AHM3/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/I meets industry standards.
7.What is the process for return or replacement of SMBJ9.0AHM3/I?
All SMBJ9.0AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0AHM3/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/I part is unused and in its original packaging.
Return procedure for SMBJ9.0AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0AHM3/I Tags
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