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Vishay General Semiconductor - Diodes Division SMBJ9.0AHM3_A/I
- Part No.:
- SMBJ9.0AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0AHM3_A/I.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,525
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Product details
Overview
SMBJ9.0AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features 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 (10/1000 μs waveform), commonly deployed to protect MOSFET gate drivers and sensor interfaces in industrial motor controls.
For engineers reviewing the SMBJ9.0AHM3_A/I datasheet, SMBJ9.0AHM3_A/I pinout, SMBJ9.0AHM3_A/I application, or SMBJ9.0AHM3_A/I equivalent, key selection criteria include clamping voltage margin relative to protected IC's absolute maximum rating, thermal derating above 25 °C ambient, unidirectional polarity alignment with DC bias rails, and halogen-free RoHS compliance required for automotive-grade production.
Technical Context
This device operates as a silicon avalanche diode that remains high-impedance below VWM (9.0 V), then rapidly transitions to low-impedance conduction once VBR (10.0–11.1 V) is exceeded-clamping transient energy within 1 ns response time. Its 15.4 V VC at 39.0 A ensures safe operation for 3.3 V and 5 V logic rails with adequate margin over typical IC overvoltage limits.
The SMBJ9.0AHM3_A/I uses glass-passivated junction construction for stable leakage performance (<10 μA at VWM), supports 100 A non-repetitive forward surge (IFSM), and is rated for continuous operation from –55 °C to +150 °C junction temperature. Its M3 suffix confirms halogen-free, RoHS-compliant materials and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum reverse working voltage before clamping begins; sets upper limit for DC rail protection without leakage-induced power loss. |
| VBR (min/max) | 10.0 V / 11.1 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above nominal rail while avoiding false trips during ripple. |
| VC @ IPPM | 15.4 V at 39.0 A - Clamped voltage under 10/1000 μs surge; must remain below protected IC's absolute max rating (e.g., <20 V for many 16-bit ADCs). |
| PPPM | 600 W - Peak pulse power handling per 10/1000 μs waveform; defines transient energy absorption capability for IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | ≤10 μA - Reverse leakage at 9.0 V; low enough to avoid loading 5 V microcontroller reset lines or analog sensor references. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive modules or enclosed industrial enclosures without forced cooling. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.21 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place and reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking. Terminals are matte tin-plated, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential point in protected circuit; completes clamping path during positive transients. |
| Cathode | High-side connection | Connected to protected line (e.g., 9 V supply rail); conducts avalanche current when line voltage exceeds VBR relative to anode. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity testing on 24 V industrial control inputs without external series impedance. |
| 15.4 V clamping voltage at 39 A | Provides ≥2.6 V margin below 18 V absolute maximum rating of common CAN transceivers (e.g., TJA1051), preventing latch-up during load dump events. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets automotive OEM material declarations (e.g., GMW3172, Ford WSS-M99P9999-A1) and eliminates corrosive halogen gas emission during board rework or fire scenarios. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow assembly without moisture sensitivity concerns or pre-bake requirements, reducing manufacturing cycle time. |
| 1 ns response time | Clamps ESD events (IEC 61000-4-2 ±8 kV contact) before sensitive gate oxides (e.g., SiC MOSFETs) experience irreversible damage. |
Applications
| Industrial Motor Drive Power Stage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protection of half-bridge gate driver ICs (e.g., IR2104) against inductive kickback from 24 V solenoid coils during PWM switching. IC Role / Device Role / Timing Role: Unidirectional TVS placed between high-side gate and source, clamping negative-going transients to prevent driver latch-up. Use Value: 15.4 V VC ensures gate-source voltage stays within ±20 V absolute max rating of driver ICs, eliminating need for discrete Zener+resistor networks. |
Use Scenario: Input protection for LIN bus transceiver (e.g., TLE6250) connected to vehicle battery via fused 12 V feed. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN TX/RX lines to absorb jump-start transients (SAE J1113-11) and alternator load dump spikes. Use Value: 9.0 V VWM allows normal LIN signaling (dominant 0–1.95 V, recessive 8–12 V) while clamping >13.5 V surges to safe levels for transceiver ESD structures. |
| Consumer Appliance Sensor Interface | Telecom Power Supply Input |
Use Scenario: Surge suppression on NTC thermistor bias line feeding HVAC microcontroller ADC input. IC Role / Device Role / Timing Role: Low-leakage (≤10 μA) TVS placed across thermistor terminals to shunt ESD from user-touch panels without distorting resistance measurement. Use Value: Sub-10 μA ID prevents >0.5 % error in 10 kΩ thermistor voltage divider at 3.3 V, maintaining ±0.5 °C temperature accuracy. |
Use Scenario: Primary-side clamping on 48 V telecom rectifier output feeding PoE PSE controller (e.g., LT4275). IC Role / Device Role / Timing Role: Unidirectional TVS referenced to system ground, absorbing lightning-induced surges on -48 V return path per GR-1089-CORE. Use Value: 600 W PPPM handles 10/700 μs telecom surges up to 4 kV without degradation, verified per Telcordia GR-1089 Section 4.5.2.2. |
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_A/I | RoHS-compliant but not halogen-free; same electrical specs and SMB package. | Approved for commercial-grade industrial equipment where halogen content is unrestricted. | Select when cost sensitivity outweighs automotive/halogen-free requirements and AEC-Q101 qualification is unnecessary. |
| SMAJ9.0A-M3 | Lower 400 W PPPM rating; SMA (DO-214AC) package with smaller 4.5 mm × 2.7 mm footprint and higher RθJA (140 °C/W). | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD) and space-constrained consumer PCBs. | Choose only if board area is critical and surge threat level is limited to handheld-device ESD, not industrial surges. |
Compared with SMBJ9.0AHM3_A/I, the SMBJ9.0AHE3_A/I offers identical protection performance at lower cost for non-automotive use, while the SMAJ9.0A-M3 sacrifices 33 % pulse power and thermal robustness to reduce footprint-making it unsuitable for 24 V industrial or automotive load-dump scenarios.
Availability
SMBJ9.0AHM3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, consumer appliance sensor interfaces, and telecom power supply inputs requiring stable component supply with halogen-free compliance and AEC-Q101 traceability.
Supply support for SMBJ9.0AHM3_A/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, power efficiency, and automotive qualification.
The SMBJ series was engineered specifically for high-energy transient suppression in harsh environments-targeting industrial automation, automotive electronics, and telecom infrastructure where failure tolerance and long-term stability are mission-critical.
FAQ
What is the maximum clamping voltage of SMBJ9.0AHM3_A/I under a 10/1000 μs surge?
The SMBJ9.0AHM3_A/I has a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 39.0 A using the standard 10/1000 μs waveform. This value is measured at the device terminals under defined test conditions per JEDEC standards and ensures predictable overvoltage limiting for downstream ICs such as microcontrollers or interface transceivers. The SMBJ9.0AHM3_A/I maintains this clamping performance across its full operating temperature range.
Is SMBJ9.0AHM3_A/I qualified for automotive applications?
Yes, SMBJ9.0AHM3_A/I is AEC-Q101 qualified, as indicated by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It meets stress test requirements for temperature cycling, humidity bias, mechanical shock, and accelerated life testing specified in AEC-Q101 Rev D. This qualification makes SMBJ9.0AHM3_A/I suitable for use in automotive body electronics, infotainment power supplies, and ADAS sensor interfaces where reliability under extended temperature and vibration is mandatory.
How does the halogen-free construction of SMBJ9.0AHM3_A/I impact board assembly?
The halogen-free construction of SMBJ9.0AHM3_A/I eliminates brominated flame retardants and chlorine-based compounds, resulting in reduced corrosive gas generation during soldering or field failure. This improves long-term reliability of nearby copper traces and connectors, supports compliance with automotive OEM material declarations (e.g., BMW GS95024-3), and simplifies end-of-life recycling. During reflow, SMBJ9.0AHM3_A/I behaves identically to standard RoHS parts-no process adjustments are needed for its MSL Level 1 rating and 260 °C peak profile.
Can SMBJ9.0AHM3_A/I be used in bidirectional signal line protection?
No, SMBJ9.0AHM3_A/I is a unidirectional TVS diode and must not be used on AC-coupled or bidirectional signal lines such as USB D+/D− or RS-485 differential pairs. Its cathode-band polarity requires correct orientation relative to DC bias-reverse connection will cause forward conduction and failure. For bidirectional protection, select the CA-suffixed variant (e.g., SMBJ9.0CA) which provides symmetrical clamping in both directions and no polarity marking.
What is the thermal resistance from junction to ambient for SMBJ9.0AHM3_A/I?
The SMBJ9.0AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air convection and no additional heatsinking. At 50 °C ambient, its 5.0 W steady-state power dissipation rating implies a maximum junction temperature of 100 °C-well within its +150 °C TJ max. Derating curves in the datasheet must be applied for operation above 25 °C ambient.
SMBJ9.0AHM3_A/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:
- 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:
- 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_A/I FAQ
1.How can I place an order for SMBJ9.0AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0AHM3_A/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_A/I reliable?
The price and inventory of SMBJ9.0AHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ9.0AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0AHM3_A/I?
SMBJ9.0AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0AHM3_A/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_A/I?
For technical support, including SMBJ9.0AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0AHM3_A/I requirements.
6.How does Aetrix verify that SMBJ9.0AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0AHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ9.0AHM3_A/I?
All SMBJ9.0AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0AHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for SMBJ9.0AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0AHM3_A/I Tags
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