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Vishay General Semiconductor - Diodes Division SMCJ9.0A-M3/9AT
- Part No.:
- SMCJ9.0A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0A-M3/9AT.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,091
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Product details
Overview
SMCJ9.0A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, with 9.0 V standoff voltage (VWM), 10.0–11.1 V breakdown voltage (VBR at 1 mA), 15.4 V clamping voltage (VC) at 97.4 A peak pulse current, and 1500 W peak pulse power rating for 10/1000 µs waveform-designed to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial power supplies.
For engineers reviewing the SMCJ9.0A-M3/9AT datasheet, SMCJ9.0A-M3/9AT pinout, SMCJ9.0A-M3/9AT application, or SMCJ9.0A-M3/9AT equivalent, key selection criteria include unidirectional polarity, 1500 W surge capability, 15.4 V clamping under 97.4 A surge, M3 halogen-free RoHS compliance, and SMC package thermal performance with RθJA = 75 °C/W.
Technical Context
The SMCJ9.0A-M3/9AT operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 10.0–11.1 V breakdown range, clamping transients to ≤15.4 V at 97.4 A. Its glass-passivated junction ensures stable breakdown and low leakage (<10 µA at 9.0 V).
Designed for high-energy transient suppression, it meets J-STD-020 MSL Level 1 (260 °C reflow peak), supports 200 A non-repetitive forward surge (8.3 ms half-sine), and delivers consistent clamping performance across -55 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 10.0 V / 11.1 V at 1.0 mA - Confirmed breakdown threshold defining turn-on precision |
| VC @ IPPM | 15.4 V at 97.4 A - Clamped voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - Peak pulse power handling capacity, enabling protection against severe inductive spikes |
| IFSM | 200 A - Single half-sine surge rating (8.3 ms), supporting robust input-stage protection |
| TJ range | -55 °C to +150 °C - Full operational junction temperature range for under-hood and industrial environments |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient, guiding PCB copper pad design per datasheet layout |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to protected circuit ground or low-side return path |
| Cathode | Reverse-biased terminal (marked with band) | Connected to line being protected; conducts avalanche current during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| 1500 W peak pulse power | Supports protection of 12 V/24 V automotive power rails against ISO 7637-2 Pulse 1/2a/5a-level transients |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns (260 °C peak) |
| Halogen-free, RoHS-compliant (M3) | Fulfills environmental compliance requirements for automotive and industrial OEM programs |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving clamping fidelity |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppressing load-dump and inductive kickback transients on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground, acting as last-line voltage clamp. Use Value: Limits voltage excursion to ≤15.4 V during 97.4 A surges, preventing damage to 16 V-rated DC-DC converters and microcontrollers. | Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on signal-to-ground path, preserving signal integrity up to 1 MHz. Use Value: Delivers <10 µA leakage at 9.0 V, avoiding DC offset errors while clamping 8 kV HBM ESD pulses per IEC 61000-4-2. |
| Consumer Device DC Input Protection | Telecom Power Interface Protection |
Use Scenario: Safeguarding USB-C PD adapters and wall chargers against AC line-induced surges and hot-plug transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side 5–20 V output rails. Use Value: Withstands 200 A 8.3 ms forward surge, ensuring survival during repeated AC fault coupling events. | Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras) from induced lightning surges on Ethernet data pairs. IC Role / Device Role / Timing Role: Unidirectional TVS on DC bias feed line (e.g., center tap of transformer), referenced to local ground. Use Value: 15.4 V clamping enables compatibility with 12 V PoE Class 3/4 interfaces while maintaining margin below 16 V IC absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A-M3 | Lower PPPM (400 W), smaller SMA package, higher RθJA (110 °C/W) | Suitable only for lower-energy transients; not recommended for automotive load-dump scenarios | Select SMCJ9.0A-M3/9AT when 1500 W surge rating and SMC thermal performance are required. |
| SMCJ9.0AHE3/9AT | AEC-Q101 qualified, same electrical specs, HE3 suffix denotes automotive-grade qualification | Required for automotive safety-critical modules where Q101 validation is mandated | Choose SMCJ9.0A-M3/9AT for commercial/industrial use; upgrade to HE3 variant for automotive production. |
Compared with SMAJ9.0A-M3 and SMCJ9.0AHE3/9AT, the SMCJ9.0A-M3/9AT provides optimal balance of high-energy surge handling (1500 W), commercial-grade halogen-free compliance, and SMC package thermal robustness-making it ideal for cost-sensitive yet demanding industrial and consumer power rail protection where AEC-Q101 is not mandatory.
Availability
SMCJ9.0A-M3/9AT is available at Aetrix Electronics and suitable for automotive power supply protection, industrial sensor interface hardening, and consumer DC input surge suppression requiring stable component supply and full traceability.
Supply support for SMCJ9.0A-M3/9AT 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, efficiency, and application-specific optimization.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure-where precise clamping and surge survivability are critical.
FAQ
What is the clamping voltage of the SMCJ9.0A-M3/9AT under maximum rated surge current?
The SMCJ9.0A-M3/9AT has a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 97.4 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for downstream components in the SMCJ9.0A-M3/9AT protection circuit.
Is the SMCJ9.0A-M3/9AT suitable for automotive applications?
The SMCJ9.0A-M3/9AT is halogen-free and RoHS-compliant but not AEC-Q101 qualified. It is appropriate for non-safety-critical automotive subsystems such as infotainment power rails or lighting controls. For AEC-Q101–required applications, the functionally identical SMCJ9.0AHE3/9AT or SMCJ9.0AHM3/9AT should be selected instead of the SMCJ9.0A-M3/9AT.
What does the "M3" suffix indicate in SMCJ9.0A-M3/9AT?
The "M3" suffix in SMCJ9.0A-M3/9AT denotes halogen-free, RoHS-compliant construction meeting JESD 201 Class 2 whisker resistance requirements. It distinguishes the part from the "E3" (RoHS-compliant, non-halogen-free) and "HE3/HM3" (AEC-Q101 qualified) variants-all sharing identical electrical characteristics and SMC package dimensions in the SMCJ9.0A-M3/9AT family.
How does the SMCJ9.0A-M3/9AT compare to bidirectional TVS diodes like SMCJ9.0CA?
The SMCJ9.0A-M3/9AT is unidirectional and features a cathode band marking; it blocks forward current and clamps only reverse overvoltages. In contrast, SMCJ9.0CA is bidirectional with no polarity marking and clamps transients in both directions. Use SMCJ9.0A-M3/9AT when protecting DC rails with defined polarity; choose SMCJ9.0CA for AC-coupled or floating signal lines where polarity reversal may occur.
What PCB layout guidance applies to the SMCJ9.0A-M3/9AT for optimal thermal performance?
Per Vishay datasheet 88394, the SMCJ9.0A-M3/9AT should be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve the specified RθJA of 75 °C/W. Avoid narrow traces; use internal ground/power planes and thermal vias beneath pads if board space allows. This layout ensures the SMCJ9.0A-M3/9AT maintains safe junction temperatures during repetitive surge events.
SMCJ9.0A-M3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 97.4A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ9.0A-M3/9AT FAQ
1.How can I place an order for SMCJ9.0A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0A-M3/9AT 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 SMCJ9.0A-M3/9AT reliable?
The price and inventory of SMCJ9.0A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ9.0A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ9.0A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0A-M3/9AT?
SMCJ9.0A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0A-M3/9AT 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 SMCJ9.0A-M3/9AT?
For technical support, including SMCJ9.0A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0A-M3/9AT requirements.
6.How does Aetrix verify that SMCJ9.0A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0A-M3/9AT 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 SMCJ9.0A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ9.0A-M3/9AT?
All SMCJ9.0A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0A-M3/9AT, 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 SMCJ9.0A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ9.0A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ9.0A-M3/9AT Tags
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