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Vishay General Semiconductor - Diodes Division SMBJ9.0AHM3_A/H
- Part No.:
- SMBJ9.0AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ9.0AHM3_A/H.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,785
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Product details
Overview
SMBJ9.0AHM3_A/H 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, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and automotive control modules.
For engineers reviewing the SMBJ9.0AHM3_A/H datasheet, SMBJ9.0AHM3_A/H pinout, SMBJ9.0AHM3_A/H application, or SMBJ9.0AHM3_A/H equivalent, key selection criteria include unidirectional polarity, halogen-free RoHS-compliant construction (HM3 suffix), AEC-Q101 qualification readiness, low thermal resistance (RθJL = 20 °C/W), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when reverse voltage exceeds VBR, limiting transient energy to safe levels for downstream circuitry. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ps), while the SMB package provides mechanical robustness and thermal performance suitable for high-reliability PCB layouts.
The SMBJ9.0AHM3_A/H is rated for -55 °C to +150 °C operating junction temperature, supports 100 A non-repetitive forward surge current (IFSM), and exhibits 0.074 %/°C temperature coefficient of VBR. It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 when ordered with HE3/HM3 suffix variants.
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 - Confirmed avalanche initiation range; ensures reliable turn-on during transients |
| VC (Clamping Voltage) | 15.4 V at IPPM = 39.0 A - Peak voltage seen by protected circuit under 600 W transient; determines IC survival margin |
| PPPM (Peak Pulse Power) | 600 W with 10/1000 µs waveform - Energy-handling capacity for lightning/ESD-like surges; validated at TA = 25 °C |
| IPPM (Peak Pulse Current) | 39.0 A - Maximum surge current the device safely diverts without degradation; derates above 25 °C ambient |
| RθJL (Junction-to-Lead Thermal Resistance) | 20 °C/W - Enables efficient heat transfer to PCB copper; critical for sustained surge duty cycles |
| Leakage (ID) | 10 µA max. at VWM - Low standby power loss; avoids false triggering or bias disruption in high-impedance circuits |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking. 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 | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines directionality of clamping action |
| Cathode | Avalanche conduction terminal / Clamping node | Connected to higher-potential side (e.g., VCC rail or signal line); carries full surge current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity without external heatsinking |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time) |
| Halogen-free, RoHS-compliant (HM3 suffix) | Meets automotive and industrial environmental compliance requirements without compromising thermal performance |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-related delamination risk |
| AEC-Q101 qualification option | Validated for automotive powertrain and body electronics applications requiring extended reliability validation |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects microcontroller GPIOs and CAN transceiver power rails from load-dump and inductive switching spikes in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VBAT and ground, triggered within nanoseconds of overvoltage event. Use Value: Limits clamped voltage to ≤15.4 V, ensuring MCU I/O tolerance (typically 16–18 V absolute max) remains unexceeded during 100 V/50 ms load dump. |
Use Scenario: Shields 24 V DC digital input channels from field-wiring induced transients caused by relay coil de-energization or ESD contact. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to shunt surge energy before reaching optocoupler or Schmitt trigger input stage. Use Value: With 9.0 V VWM, it remains inactive during normal 24 V operation but clamps at 15.4 V to prevent latch-up or damage to 5 V logic interface components. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Input Stage |
Use Scenario: Safeguards gate drivers and bootstrap capacitors in BLDC motor inverters against shoot-through-induced voltage spikes and back-EMF surges. IC Role / Device Role / Timing Role: Mounted directly at half-bridge power stage inputs to clamp transient overshoot on high-side and low-side supply rails. Use Value: 600 W rating handles repetitive 10/1000 µs surges from PWM commutation; RθJL = 20 °C/W enables direct thermal coupling to copper pour for thermal stability. |
Use Scenario: Installed at AC-DC converter primary-side rectifier output to suppress line surge and lightning-induced transients entering telecom power systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between rectified DC bus and ground, absorbing differential-mode surges before bulk capacitor filtering. Use Value: 15.4 V clamping voltage ensures secondary-side regulators and PMICs remain within safe operating area during 6 kV line surge events per IEC 61000-4-5. |
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/H | RoHS-compliant (E3), non-halogen-free; same electrical specs and AEC-Q101 qualification path | Preferred for commercial-grade designs where halogen-free requirement is not mandated | Select when cost sensitivity outweighs halogen-free compliance; identical footprint and thermal behavior |
| SMBJ9.0A-M3/52 | Same halogen-free (M3) construction but in 7" tape-and-reel (52) packaging; no AEC-Q101 qualification | Suitable for high-volume consumer manufacturing with standard SMT feeders and no automotive qualification need | Choose for production scalability and logistics compatibility where AEC-Q101 is unnecessary |
Compared with SMBJ9.0AHM3_A/H, the HE3 variant offers identical clamping performance without halogen-free assurance, while the M3/52 version trades qualification for optimized reel logistics - all share SMB package, 9.0 V VWM, and 15.4 V VC, enabling design reuse across commercial, industrial, and automotive tiers.
Availability
SMBJ9.0AHM3_A/H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and telecom power supply designs requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification readiness.
Supply support for SMBJ9.0AHM3_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, and protection devices with emphasis on reliability, thermal performance, and application-specific qualification.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where consistent clamping voltage, low leakage, and MSL-1 reflow capability are mandatory.
FAQ
What is the clamping voltage of SMBJ9.0AHM3_A/H at its rated peak pulse current?
The SMBJ9.0AHM3_A/H has a maximum clamping voltage (VC) of 15.4 V at 39.0 A peak pulse current (IPPM) 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. The SMBJ9.0AHM3_A/H maintains this clamping performance across its qualified operating temperature range, supporting reliable system-level surge immunity design.
Is SMBJ9.0AHM3_A/H qualified to AEC-Q101?
The SMBJ9.0AHM3_A/H is built to the HM3 halogen-free, RoHS-compliant specification and shares the same die and qualification path as AEC-Q101-qualified variants (e.g., SMBJ9.0AHM3_X). While the exact "_A/H" suffix denotes packaging and revision code rather than final qualification status, Vishay documents AEC-Q101 qualification for HM3-base parts in the SMBJ family. Customers requiring certified AEC-Q101 documentation should specify the full qualified ordering code (e.g., SMBJ9.0AHM3_B/H) and request the applicable certificate for SMBJ9.0AHM3_A/H.
What does the "HM3" suffix indicate in SMBJ9.0AHM3_A/H?
The "HM3" suffix in SMBJ9.0AHM3_A/H identifies halogen-free, RoHS-compliant construction per Vishay's material categorization standards. It confirms compliance with JEDEC J-STD-20 and JESD201 Class 2 whisker testing, and specifies matte tin-plated leads solderable per J-STD-002. Unlike E3-suffix parts, HM3 ensures absence of brominated flame retardants and other regulated halogens - critical for automotive and green-industrial applications. The SMBJ9.0AHM3_A/H retains identical electrical and thermal specs as its E3 counterpart.
Can SMBJ9.0AHM3_A/H be used in bidirectional protection circuits?
No - SMBJ9.0AHM3_A/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. Bidirectional operation requires the "CA" suffix (e.g., SMBJ9.0CA). Using SMBJ9.0AHM3_A/H in a bidirectional configuration would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit. For symmetric surge protection, select SMBJ9.0CA or confirm layout polarity alignment with the SMBJ9.0AHM3_A/H's anode-cathode orientation.
What is the thermal resistance from junction to ambient for SMBJ9.0AHM3_A/H?
The SMBJ9.0AHM3_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 - as defined in Vishay's datasheet Figure 2 derating curves. This value assumes standard FR-4 PCB layout; actual RθJA improves significantly with enhanced copper pour or internal layers. For thermal design, the SMBJ9.0AHM3_A/H's lower RθJL (20 °C/W) indicates superior heat transfer to PCB traces, making pad layout optimization highly effective.
SMBJ9.0AHM3_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:
- 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/H FAQ
1.How can I place an order for SMBJ9.0AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ9.0AHM3_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 SMBJ9.0AHM3_A/H reliable?
The price and inventory of SMBJ9.0AHM3_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 SMBJ9.0AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ9.0AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ9.0AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ9.0AHM3_A/H?
SMBJ9.0AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ9.0AHM3_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 SMBJ9.0AHM3_A/H?
For technical support, including SMBJ9.0AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ9.0AHM3_A/H requirements.
6.How does Aetrix verify that SMBJ9.0AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ9.0AHM3_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 SMBJ9.0AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ9.0AHM3_A/H?
All SMBJ9.0AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ9.0AHM3_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 SMBJ9.0AHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ9.0AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ9.0AHM3_A/H Tags
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