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Vishay General Semiconductor - Diodes Division SMCJ90A-M3/57T
- Part No.:
- SMCJ90A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ90A-M3/57T.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,322
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Product details
Overview
SMCJ90A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 90 V stand-off voltage (VWM), 100–111 V breakdown range (VBR at 1 mA), 146 V maximum clamping voltage (VC) at 10.3 A peak pulse current (IPPM), and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power supply inputs, industrial motor drive control circuits, and telecom DC-DC converter outputs.
For engineers reviewing the SMCJ90A-M3/57T datasheet, SMCJ90A-M3/57T pinout, SMCJ90A-M3/57T application, or SMCJ90A-M3/57T equivalent, key selection criteria include unidirectional polarity, 1500 W surge capability, 146 V clamping performance at rated IPPM, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT assembly on standard 8 mm × 8 mm copper pads per JEDEC mounting guidelines.
Technical Context
The SMCJ90A-M3/57T operates as a silicon avalanche diode that enters controlled breakdown above its 90 V stand-off threshold to shunt transient energy away from protected circuitry. Its glass-passivated junction ensures stable VBR tolerance (±5% typical), low incremental surge resistance, and fast response time (<1 ns), enabling effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
Thermally, it supports operation from –55 °C to +150 °C junction temperature, with RθJA = 75 °C/W and RθJL = 15 °C/W, requiring minimum 8.0 mm × 8.0 mm copper pad area per terminal for full 1500 W rating. The M3 suffix confirms halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance and MSL Level 1 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V–48 V systems. |
| VBR (min/max) | 100 V / 111 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on without premature conduction under normal conditions. |
| VC @ IPPM | 146 V at 10.3 A (10/1000 µs) - Clamping voltage limiting downstream component stress during worst-case surge events. |
| PPPM | 1500 W - Peak pulse power handling capacity, validated on 8 mm × 8 mm copper pads per Fig. 2 derating curve. |
| ID @ VWM | 1.0 µA - Ultra-low leakage at rated stand-off, minimizing standby power loss in battery-backed or low-power circuits. |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and high-temperature industrial enclosures without thermal derating. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with cathode band marking, compatible with pick-and-place and reflow soldering. |
Pinout & Package
SMCJ90A-M3/57T uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, 0.220–0.246 inch (5.59–6.22 mm) body width, 0.260–0.280 inch (6.60–7.11 mm) length, and cathode band marking on one end. Polarity is unidirectional; the banded end is the cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point for reverse-biased TVS operation | Connected to protected line (e.g., VIN); conducts when transient exceeds VWM, diverting current to ground. |
| Anode (non-banded end) | Reference/ground return path | Typically tied to system ground plane or low-impedance return path; completes clamping loop during surge event. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges on 24 V–48 V DC rails without parallel staging. |
| 146 V clamping at 10.3 A | Limits voltage overshoot to ≤1.62× VWM, preserving MOSFET gate oxide integrity and IC input stage reliability. |
| Halogen-free, RoHS-compliant (M3) | Meets automotive and industrial environmental mandates while maintaining JESD201 Class 2 whisker resistance for long-term solder joint reliability. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free reflow profiles without preconditioning, reducing manufacturing complexity and cost. |
| Glass-passivated junction | Ensures stable VBR across temperature and lifetime, with <0.1%/°C tempco, critical for precision clamp threshold maintenance. |
Applications
| Automotive Power Input Protection | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs and ADAS sensors from load dump transients (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping >100 V spikes within nanoseconds. Use Value: Prevents latch-up or permanent damage to buck controller ICs and microcontrollers exposed to 120 V/100 ms load dump events. | Use Scenario: Safeguarding gate drivers and current-sense amplifiers in variable-frequency drives subjected to IGBT switching noise and inductive kickback. IC Role / Device Role / Timing Role: Mounted across isolated DC bus rails (e.g., +15 V gate supply), absorbing 10/1000 µs transients induced by fast-switching power stages. Use Value: Maintains gate driver logic integrity and prevents false triggering of overcurrent protection during PWM transitions. |
| Telecom DC-DC Converter Output | Consumer Power Adapter Interface |
Use Scenario: Shielding 48 V PoE-powered switch ports and base station RF modules from Ethernet surge coupling and lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Placed on secondary-side output of isolated flyback converters, clamping surges before they reach PHY ICs or PMICs. Use Value: Ensures uninterrupted data transmission by limiting output rail excursion to <150 V during 1.2/50 µs surge events per IEC 61000-4-5. | Use Scenario: Hardening USB-C PD adapter output rails against ESD (IEC 61000-4-2 ±15 kV contact) and accidental AC mains coupling during plug insertion. IC Role / Device Role / Timing Role: Integrated into secondary-side filtering stage, acting as last-line defense before connector pins and load switches. Use Value: Eliminates need for external spark gaps or multi-stage protection, reducing BOM count while achieving UL 1449 Type 4 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A-M3/57T | Lower PPPM (600 W), smaller SMB package (DO-214AA), same VWM/VBR/VC ratings | Reduced surge margin; suitable only for lower-energy transients (e.g., IEC 61000-4-2 ESD, not IEC 61000-4-5) | Select when board space is constrained and surge threat level is limited to ESD or low-energy switching noise. |
| SMCJ90CA-M3/57T | Bidirectional variant; identical VWM/VBR/VC but symmetrical clamping in both polarities | Required for AC-coupled or differential signal lines (e.g., RS-485, CAN FD) where polarity reversal occurs | Choose only when protecting bidirectional interfaces; unidirectional SMCJ90A-M3/57T is optimal for DC power rails. |
Compared with SMBJ90A-M3/57T, the SMCJ90A-M3/57T delivers 2.5× higher surge energy handling in the same footprint family, while SMCJ90CA-M3/57T trades unidirectional efficiency for dual-polarity clamping - making the original part the preferred choice for high-reliability DC power protection where polarity is fixed and surge severity is high.
Availability
SMCJ90A-M3/57T is available at Aetrix Electronics and suitable for automotive ECU designs, industrial motor controllers, and telecom power supplies requiring stable component supply, halogen-free compliance, and proven 1500 W surge immunity.
Supply support for SMCJ90A-M3/57T 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 qualification.
The SMCJ series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure modes must be mitigated without compromising size or manufacturability.
FAQ
What is the clamping voltage of the SMCJ90A-M3/57T under maximum rated surge current?
The SMCJ90A-M3/57T has a maximum clamping voltage (VC) of 146 V when subjected to its rated 10.3 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions using 8.0 mm × 8.0 mm copper pads per terminal and represents the upper limit of voltage seen by downstream components during worst-case transient events. The SMCJ90A-M3/57T maintains this clamping performance across its full operating temperature range.
Does the SMCJ90A-M3/57T meet automotive qualification standards?
The SMCJ90A-M3/57T carries the M3 suffix indicating halogen-free, RoHS-compliant construction and MSL Level 1 reflow compatibility, but it is not AEC-Q101 qualified. For automotive applications requiring formal qualification, engineers should select the HM3-suffixed variant (e.g., SMCJ90A-HM3/57T), which is explicitly tested and certified to AEC-Q101. The SMCJ90A-M3/57T remains suitable for non-safety-critical automotive subsystems where customer validation suffices.
How does the SMCJ90A-M3/57T differ from the SMCJ90CA-M3/57T?
The SMCJ90A-M3/57T is unidirectional with cathode band marking and optimized for DC rail protection, whereas the SMCJ90CA-M3/57T is bidirectional with no polarity marking and designed for AC or differential signal lines like RS-485 or CAN FD. Both share identical VWM (90 V), VBR (100–111 V), and VC (146 V) ratings, but the CA version clamps symmetrically in both directions. The SMCJ90A-M3/57T offers superior surge margin for fixed-polarity applications due to its dedicated unidirectional architecture.
What is the recommended PCB layout for achieving full 1500 W rating of the SMCJ90A-M3/57T?
To achieve the full 1500 W peak pulse power rating, the SMCJ90A-M3/57T must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in Figure 2 of the Vishay datasheet 88394. Thermal vias under pads and internal ground/power planes improve heat dissipation. Reducing pad size or using narrow traces de-rates PPPM significantly - e.g., a 25 mm² pad reduces rating to ~900 W. The SMCJ90A-M3/57T's RθJA of 75 °C/W assumes this layout.
Is the SMCJ90A-M3/57T suitable for protecting 48 V DC systems?
Yes, the SMCJ90A-M3/57T is well-suited for 48 V DC system protection, as its 90 V stand-off voltage (VWM) provides a 1.88× safety margin above nominal rail voltage, and its 146 V clamping voltage ensures downstream components see less than 3× nominal voltage during surge events. It is commonly deployed on 48 V PoE injectors, telecom rectifier outputs, and industrial PLC power inputs. The SMCJ90A-M3/57T's low leakage (<1 µA) also minimizes standby losses in always-on 48 V infrastructure.
SMCJ90A-M3/57T 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):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMCJ90A-M3/57T FAQ
1.How can I place an order for SMCJ90A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ90A-M3/57T 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 SMCJ90A-M3/57T reliable?
The price and inventory of SMCJ90A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ90A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ90A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ90A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ90A-M3/57T?
SMCJ90A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ90A-M3/57T 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 SMCJ90A-M3/57T?
For technical support, including SMCJ90A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ90A-M3/57T requirements.
6.How does Aetrix verify that SMCJ90A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ90A-M3/57T 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 SMCJ90A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ90A-M3/57T?
All SMCJ90A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ90A-M3/57T, 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 SMCJ90A-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ90A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ90A-M3/57T Tags
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