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Vishay General Semiconductor - Diodes Division SMCJ9.0AHM3/I
- Part No.:
- SMCJ9.0AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0AHM3/I.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,836
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Product details
Overview
SMCJ9.0AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients up to 1500 W peak pulse power with 15.4 V maximum clamping voltage at 97.4 A peak pulse current. It features 10.0–11.1 V breakdown voltage at 1 mA test current, 9.0 V stand-off voltage, and <10 μA reverse leakage at rated VWM - used for protecting MOSFETs, ICs, and sensor signal lines in automotive and industrial power rails.
For engineers reviewing the SMCJ9.0AHM3/I datasheet, SMCJ9.0AHM3/I pinout, SMCJ9.0AHM3/I application, or SMCJ9.0AHM3/I equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, SMC package mechanical data, and real-world protection use cases - all aligned to Vishay Document #88394 (Rev. 09-Jan-2024).
Technical Context
The SMCJ9.0AHM3/I operates as a unidirectional avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to 10/1000 μs transients. Its low incremental surge resistance ensures stable clamping under repetitive surges, while MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
Thermal performance is defined by RθJA = 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads) and RθJL = 15 °C/W, enabling reliable operation up to TJ = +150 °C. The cathode band marking confirms polarity for correct PCB orientation in DC-biased protection paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min/max | 10.0 V to 11.1 V at IT = 1 mA - defines minimum voltage at which avalanche conduction begins; ensures reliable turn-on before downstream device damage. |
| VWM | 9.0 V - maximum continuous reverse operating voltage; sets safe DC bias margin below breakdown threshold. |
| VC @ IPPM | 15.4 V at 97.4 A - clamped voltage during 10/1000 μs surge; determines worst-case stress on protected circuitry. |
| PPPM | 1500 W - peak pulse power handling capability; defines transient energy absorption capacity per event. |
| IPPM | 97.4 A - peak pulse current supported at rated waveform; used to size upstream fusing and trace routing. |
| TJ max | +150 °C - maximum junction temperature; constrains ambient and PCB thermal design for sustained reliability. |
| Leakage ID | <10 μA at VWM = 9.0 V - ensures minimal standby power loss and signal integrity in high-impedance circuits. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by molded band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for under-hood ECUs and ADAS power supplies. |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a transients without degradation - eliminates need for external series impedance in many 12 V systems. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage overshoot during clamping - critical for safeguarding 12 V logic interfaces and CAN transceivers. |
| MSL Level 1, 260 °C peak reflow | Enables compatibility with standard lead-free SMT assembly processes without moisture sensitivity concerns or baking requirements. |
| Glass-passivated junction | Improves long-term stability of VBR and leakage under thermal stress - essential for 15-year automotive service life. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of engine control units (ECUs) against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and input filter capacitor. Use Value: Limits transient excursions to ≤15.4 V, preventing damage to LDOs and microcontrollers rated for 16 V absolute maximum. |
Use Scenario: Shielding analog output lines of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector interface to suppress ESD and inductive switching noise. Use Value: Maintains signal fidelity with <10 μA leakage at 9.0 V, avoiding DC offset errors in 4–20 mA current loops. |
| DC-DC Converter Input Stage | Telecom Power Interface Protection |
|
Use Scenario: Safeguarding buck converter front-end against voltage spikes induced by relay coil de-energization. IC Role / Device Role / Timing Role: Primary transient suppressor located upstream of input bulk capacitor and EMI filter. Use Value: Absorbs 1500 W surges without thermal runaway, preserving converter efficiency and enabling compact heatsink-less designs. |
Use Scenario: Guarding PoE-powered network switches against lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: First-line defense in multi-stage protection scheme, coordinated with GDT and MOV stages. Use Value: Fast <1 ns response captures initial surge edge before slower components activate - reducing let-through energy by >40%. |
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-M3/57T | Lower PPPM = 600 W; SMB package (smaller footprint, higher RθJA = 85 °C/W) | Suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD); not rated for ISO 7637-2 Pulse 5a. | Select when board space is constrained and surge energy is limited to ≤600 W. |
| SMCJ9.0AHE3_A/I | Same electrical specs and SMC package, but commercial-grade (non-AEC-Q101) and RoHS-compliant without halogen-free certification. | Lacks automotive qualification; acceptable for industrial/commercial power supplies where AEC-Q101 is not mandated. | Choose for cost-sensitive non-automotive designs requiring identical clamping performance and thermal behavior. |
Compared with SMCJ9.0AHM3/I, the SMBJ9.0A-M3/57T trades surge robustness for smaller size, while the SMCJ9.0AHE3_A/I retains full electrical equivalence but omits AEC-Q101 validation and halogen-free compliance - making SMCJ9.0AHM3/I the sole option meeting full automotive production requirements.
Availability
SMCJ9.0AHM3/I is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across extended production lifecycles.
Supply support for SMCJ9.0AHM3/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, rectifiers, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The SMCJ series targets high-energy transient suppression in harsh environments, engineered specifically for automotive, industrial, and telecom applications demanding AEC-Q101 compliance and 1500 W surge immunity.
FAQ
What is the breakdown voltage tolerance of the SMCJ9.0AHM3/I?
The SMCJ9.0AHM3/I has a specified breakdown voltage range of 10.0 V to 11.1 V at IT = 1 mA, corresponding to ±5.5% tolerance around the nominal 10.55 V midpoint. This tight VBR distribution ensures consistent clamping onset across production lots and supports precise overvoltage margining in safety-critical designs.
Is the SMCJ9.0AHM3/I suitable for bidirectional transient protection?
No, the SMCJ9.0AHM3/I is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the SMCJ9.0CA variant (with "CA" suffix), which provides symmetrical clamping in both polarities and no polarity marking. Using SMCJ9.0AHM3/I in AC or floating applications risks forward conduction and failure.
Does the SMCJ9.0AHM3/I meet AEC-Q101 requirements?
Yes, the SMCJ9.0AHM3/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" (halogen-free, RoHS-compliant, AEC-Q101 qualified). Test reports cover HTGB, HTRB, temperature cycling, and ESD per AEC-Q101 Rev D, making it approved for automotive powertrain and chassis applications.
What is the thermal resistance of the SMCJ9.0AHM3/I in standard mounting conditions?
The SMCJ9.0AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, per Vishay Document #88394. This value assumes no additional heatsinking and defines the maximum power dissipation limit before exceeding TJ = +150 °C at TA = +50 °C.
How does the SMCJ9.0AHM3/I compare to the SMAJ9.0A in terms of surge capability?
The SMCJ9.0AHM3/I delivers 1500 W peak pulse power, more than double the 400 W rating of the SMAJ9.0A, due to its larger SMC (DO-214AB) package versus SMA (DO-214AC). This enables SMCJ9.0AHM3/I to handle ISO 7637-2 Pulse 5a load dump events that would exceed the energy rating of SMAJ9.0A, making it appropriate for 12 V vehicle battery rail protection.
SMCJ9.0AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 97.4A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ9.0AHM3/I FAQ
1.How can I place an order for SMCJ9.0AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0AHM3/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 SMCJ9.0AHM3/I reliable?
The price and inventory of SMCJ9.0AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ9.0AHM3/I is usually 5 days.
3.What payment methods are accepted for SMCJ9.0AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0AHM3/I?
SMCJ9.0AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0AHM3/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 SMCJ9.0AHM3/I?
For technical support, including SMCJ9.0AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0AHM3/I requirements.
6.How does Aetrix verify that SMCJ9.0AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0AHM3/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 SMCJ9.0AHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ9.0AHM3/I?
All SMCJ9.0AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0AHM3/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 SMCJ9.0AHM3/I part is unused and in its original packaging.
Return procedure for SMCJ9.0AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ9.0AHM3/I Tags
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