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Vishay General Semiconductor - Diodes Division SMCJ5.0A-M3/9AT
- Part No.:
- SMCJ5.0A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ5.0A-M3/9AT.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,744
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Product details
Overview
SMCJ5.0A-M3/9AT 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 9.2 V maximum clamping voltage at 163 A peak pulse current. It features 5.0 V stand-off voltage, 6.40–7.07 V breakdown voltage at 10 mA test current, and <1000 µA reverse leakage at VWM. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power supply rails.
For engineers reviewing the SMCJ5.0A-M3/9AT datasheet, SMCJ5.0A-M3/9AT pinout, SMCJ5.0A-M3/9AT application, or SMCJ5.0A-M3/9AT equivalent, this page delivers verified electrical specs, thermal derating behavior, JEDEC-compliant SMC package dimensions, AEC-Q101 qualification status (via HM3 suffix), and real-world surge protection use cases - all aligned to Vishay Document #88394 (Rev. 09-Jan-2024).
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 6.40–7.07 V breakdown range. Its low incremental surge resistance and sub-nanosecond response time enable effective suppression of ESD, lightning-induced surges, and inductive switching spikes on DC power rails and low-speed signal paths.
Thermally, it exhibits RθJA = 75 °C/W (typ.) and RθJL = 15 °C/W (typ.), supporting reliable operation up to TJ = +150 °C. The M3 suffix confirms halogen-free, RoHS-compliant construction with matte tin-plated leads meeting J-STD-002 solderability and JESD22-B102 whisker resistance Class 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for protected circuit's nominal rail voltage. |
| VBR (min/max) | 6.40 V / 7.07 V at IT = 10 mA - Confirmed avalanche onset range; ensures predictable turn-on margin above VWM. |
| VC @ IPPM | 9.2 V at 163 A (10/1000 µs) - Clamped voltage seen by downstream circuit during worst-case transient; defines protection level. |
| PPPM | 1500 W - Peak pulse power handling capability; determines survivability against standardized surge waveforms. |
| IPPM | 163 A - Peak surge current supported under 10/1000 µs waveform; used with PCB copper pad layout per Fig. 2 for thermal validation. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline with 8.0 mm × 8.0 mm thermal pads; supports automated placement and reflow. |
Pinout & Package
SMCJ5.0A-M3/9AT uses the SMC (DO-214AB) package: a rectangular, low-profile surface-mount case with cathode band marking on one end. Leads are matte tin-plated, compliant with J-STD-002 and JESD22-B102. Polarity is unidirectional - the banded end is the cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to system ground or lower-potential node; forms clamping path when cathode is at higher potential. |
| Cathode (banded end) | Clamping output / Surge sink | Connected to protected line (e.g., 5 V rail); conducts avalanche current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 5 V systems without external series impedance. |
| 9.2 V clamping voltage at 163 A | Limits voltage stress on 5 V logic ICs and microcontrollers during transients, staying well below typical 7 V absolute maximum ratings. |
| AEC-Q101 qualified (via HM3 suffix lineage) | Validated for automotive powertrain and body electronics applications requiring zero-failure reliability under temperature cycling and humidity exposure. |
| Halogen-free, RoHS-compliant (M3) | Meets global environmental compliance mandates including EU RoHS Directive 2011/65/EU and JEDEC J-STD-020 MSL Level 1. |
| Low profile SMC package | 0.220–0.246 inch width supports high-density PCB layouts while maintaining thermal pad area for 8.0 mm × 8.0 mm copper attachment. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Guarding |
|---|---|
Use Scenario: Protecting 5 V CAN transceiver power input against load dump and alternator ripple in passenger vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between fused 5 V rail and transceiver VCC, sinking surge energy to ground. Use Value: Maintains VC ≤ 9.2 V during 100 A/10 ms pulses, preventing latch-up or permanent damage to ISO 11898-compliant receivers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS mounted at connector interface to divert ESD (IEC 61000-4-2 ±8 kV contact) and motor-switching noise away from op-amp input stage. Use Value: Sub-ns response ensures clamping occurs before sensitive amplifier input stages experience overvoltage beyond ±10 V absolute rating. |
| Consumer USB Port Overvoltage Defense | Telecom DC Power Input Surge Suppression |
Use Scenario: Safeguarding USB 2.0 VBUS line in portable docking stations exposed to hot-plug induced transients. IC Role / Device Role / Timing Role: SMCJ5.0A-M3/9AT placed inline on 5 V VBUS trace upstream of USB controller and power switch. Use Value: With 5.0 V VWM, it remains non-conductive during normal operation yet clamps to 9.2 V within 1 ns during ±15 kV ESD events. |
Use Scenario: Front-end protection for 5 V/12 V telecom base station power supplies subjected to lightning-induced surges on -48 V DC distribution lines. IC Role / Device Role / Timing Role: Used in conjunction with GDT and MOV in multi-stage protection network to absorb fast-rising edge energy before slower components engage. Use Value: 1500 W PPPM handles first 10 µs of 10/1000 µs surge waveform, reducing stress on downstream 1000 W-rated MOVs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A-M3 | Lower PPPM (400 W), smaller SMA package (DO-214AC), same VWM/VC spec. | Not suitable for >400 W surge requirements; limited thermal mass for repeated transients. | Select when board space is constrained and surge threat level is IEC 61000-4-2 only (not 4-5). |
| SMCJ5.0CA-M3/9AT | Bidirectional variant; identical VWM, VBR, VC, and PPPM; no polarity marking. | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, audio); not usable on DC rails with defined ground reference. | Choose only when protecting symmetric signals or floating buses where reverse conduction must be supported. |
Compared with SMAJ5.0A-M3, SMCJ5.0A-M3/9AT provides 275 % higher surge power headroom and superior thermal dissipation via larger SMC footprint; versus SMCJ5.0CA-M3/9AT, it offers lower capacitance and avoids unnecessary bidirectional conduction in grounded DC systems.
Availability
SMCJ5.0A-M3/9AT is available at Aetrix Electronics and suitable for automotive ECU power rails, industrial sensor interfaces, consumer USB VBUS lines, and telecom DC input stages requiring stable component supply across long production lifecycles.
Supply support for SMCJ5.0A-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, thermal performance, and automotive-grade qualification.
The SMCJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated without compromising signal integrity or power efficiency.
FAQ
What is the maximum clamping voltage of SMCJ5.0A-M3/9AT under rated surge conditions?
The SMCJ5.0A-M3/9AT has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated 163 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C with specified 8.0 mm × 8.0 mm copper pads per terminal, and represents the highest voltage imposed on the protected circuit during worst-case transient events. SMCJ5.0A-M3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCJ5.0A-M3/9AT qualified for automotive applications?
Yes - the M3 suffix denotes halogen-free, RoHS-compliant construction, and the SMCJ5.0A-M3/9AT belongs to the Vishay SMCJ family that includes AEC-Q101 qualified variants (e.g., SMCJ5.0AHM3_X). While the exact M3/9AT reel does not carry the "HM3" prefix, its die, process, and qualification lineage are identical to AEC-Q101 parts. Designers may use SMCJ5.0A-M3/9AT in automotive applications where full AEC-Q101 documentation is not mandated but high-reliability surge suppression is required. SMCJ5.0A-M3/9AT meets JESD22-B102 whisker testing and MSL Level 1 per J-STD-020.
How does the SMCJ5.0A-M3/9AT differ from the bidirectional SMCJ5.0CA-M3/9AT?
The SMCJ5.0A-M3/9AT is unidirectional and features a cathode band for polarity identification, whereas the SMCJ5.0CA-M3/9AT is bidirectional with no polarity marking and symmetrical breakdown in both directions. Both share identical VWM (5.0 V), VBR (6.40–7.07 V), VC (9.2 V), and PPPM (1500 W) ratings. SMCJ5.0A-M3/9AT is intended for DC power rails with defined ground reference; SMCJ5.0CA-M3/9AT is required for AC-coupled or floating differential signals like RS-485 or audio lines. SMCJ5.0A-M3/9AT exhibits lower junction capacitance in forward bias, improving high-frequency noise rejection.
What is the thermal resistance of SMCJ5.0A-M3/9AT, and how does it affect layout design?
The SMCJ5.0A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W, measured on minimum recommended 8.0 mm × 8.0 mm copper pads per terminal. These values mean that at 6.5 W steady-state dissipation, junction temperature rise could exceed 490 °C without proper heatsinking - confirming that SMCJ5.0A-M3/9AT is intended for transient-only duty, not continuous power dissipation. Layout must replicate the specified pad size and avoid thermal isolation; SMCJ5.0A-M3/9AT relies on short, wide traces and internal plane connections for thermal relief during surge events.
Can SMCJ5.0A-M3/9AT be used in place of SMAJ5.0A-M3 for higher surge protection?
Yes - SMCJ5.0A-M3/9AT is a direct upgrade from SMAJ5.0A-M3 in surge capability: it delivers 1500 W PPPM versus 400 W, with identical VWM (5.0 V) and VC (9.2 V), but in the larger SMC (DO-214AB) package. The increased thermal mass and lower RθJA allow SMCJ5.0A-M3/9AT to survive multiple high-energy transients where SMAJ5.0A-M3 would fail. However, PCB footprint must be updated from SMA to SMC dimensions (0.220–0.246" width vs. 0.188–0.205"), and assembly processes must accommodate the heavier 0.211 g unit weight. SMCJ5.0A-M3/9AT is not a drop-in replacement but a performance-optimized alternative.
SMCJ5.0A-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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 163A
- 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)
SMCJ5.0A-M3/9AT FAQ
1.How can I place an order for SMCJ5.0A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ5.0A-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 SMCJ5.0A-M3/9AT reliable?
The price and inventory of SMCJ5.0A-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 SMCJ5.0A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ5.0A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ5.0A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ5.0A-M3/9AT?
SMCJ5.0A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ5.0A-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 SMCJ5.0A-M3/9AT?
For technical support, including SMCJ5.0A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ5.0A-M3/9AT requirements.
6.How does Aetrix verify that SMCJ5.0A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ5.0A-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 SMCJ5.0A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ5.0A-M3/9AT?
All SMCJ5.0A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ5.0A-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 SMCJ5.0A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ5.0A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ5.0A-M3/9AT Tags
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