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Vishay General Semiconductor - Diodes Division SMAJ90CA-M3/61
- Part No.:
- SMAJ90CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ90CA-M3/61.pdf
- Description:
- TVS DIODE 90VWM 146VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,115
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Product details
Overview
SMAJ90CA-M3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 90 V stand-off voltage (VWM), 100–111 V breakdown voltage (VBR) at 1 mA, 146 V maximum clamping voltage (VC) at 2.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SMAJ90CA-M3/61 datasheet, SMAJ90CA-M3/61 pinout, SMAJ90CA-M3/61 application, or SMAJ90CA-M3/61 equivalent, this device serves as a robust, AEC-Q101-qualified option for automotive and industrial overvoltage protection where low-profile mounting, fast response (<1 ns), and stable clamping under repetitive surge conditions are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling protection of AC-coupled or floating signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and low incremental surge resistance, critical for consistent clamping performance during repeated transients.
The device is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 120 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. Its M3 suffix denotes halogen-free, RoHS-compliant construction with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 90 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 100 V / 111 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above system nominal voltage. |
| VC @ IPPM | 146 V at 2.1 A - Clamped voltage during 10/1000 μs surge; limits stress on downstream ICs or MOSFETs. |
| PPPM | 400 W - Peak pulse power handling capability; supports high-energy transients like ISO 7637-2 Load Dump pulses. |
| IPPM | 2.1 A - Peak surge current corresponding to VC; determines minimum trace width and PCB layout margin. |
| TJ max | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| Package | SMA (DO-214AC) - Low-profile SMD outline compatible with automated placement; footprint matches industry-standard 5.28 mm × 4.50 mm pad layout. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Connects to ground or common reference; completes clamping loop during positive or negative surges. |
| Cathode | Transient return path (bidirectional) | Electrically identical to anode in CA devices; no functional distinction-both terminals serve as symmetrical surge shunt points. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses, or floating sensors without external polarity management. |
| 400 W peak pulse power (10/1000 μs) | Withstands high-energy transients such as inductive switch-off spikes in automotive power distribution networks. |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial end equipment without compromising surge robustness. |
| AEC-Q101 qualified variant available | Supports automotive-grade reliability validation; base part SMAJ90CA-M3/61 is commercial grade but shares same die and package process. |
| Low profile (max height 2.29 mm) | Enables use in space-constrained modules including ADAS camera housings and compact motor control boards. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between power rail and chassis ground. Use Value: Limits transient voltage to ≤146 V, preventing damage to 3.3 V/5 V microcontrollers and CAN transceivers downstream. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on differential or single-ended signal traces. Use Value: Sub-1 ns response time suppresses >8 kV HBM ESD pulses before sensitive front-end amplifiers saturate. |
| Telecom Data Line Surge Suppression | Consumer Power Adapter Input Protection |
|
Use Scenario: Safeguarding Ethernet PHY interfaces or RS-485 transceivers connected to outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on line-side of isolation barrier or common-mode choke. Use Value: Handles 400 W surge energy while maintaining <1.0 μA leakage at 90 V, preserving signal integrity. |
Use Scenario: Input-stage protection for AC-DC adapters exposed to lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Secondary-side clamping device after bridge rectifier, before bulk capacitor. Use Value: 146 V clamping prevents overvoltage failure of primary-side controllers and optocouplers during brownout recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ90A-M3/61 | Unidirectional version; cathode band marked; 146 V clamping at 2.1 A same as SMAJ90CA-M3/61. | Requires polarity-aware layout; unsuitable for AC or floating nodes. | Select when protecting DC rails with known polarity and space allows unidirectional optimization. |
| SMBJ90CA-M3/61 | Same VWM/VC, but 600 W PPPM rating and SMB (DO-214AA) package (larger footprint, higher thermal mass). | Better suited for higher-energy transients; requires larger PCB area and different reflow profile. | Choose when surge energy exceeds 400 W or board layout permits larger 7.11 mm × 6.22 mm footprint. |
Compared with SMAJ90A-M3/61, SMAJ90CA-M3/61 offers polarity-agnostic protection without layout constraints; compared with SMBJ90CA-M3/61, it trades peak power headroom for compactness and compatibility with dense automotive PCBs.
Availability
SMAJ90CA-M3/61 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O cards, telecom base station interface boards, and consumer power adapter designs requiring stable component supply and halogen-free compliance.
Supply support for SMAJ90CA-M3/61 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 SMAJ series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and computing systems-designed for rapid response, repeatable clamping, and seamless integration into automated SMT lines.
FAQ
What is the clamping voltage of SMAJ90CA-M3/61 under a 10/1000 μs surge?
The SMAJ90CA-M3/61 clamps to a maximum of 146 V when subjected to its rated peak pulse current of 2.1 A with a 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees upper-bound voltage stress on protected circuitry during standardized surge events.
Is SMAJ90CA-M3/61 suitable for automotive applications?
SMAJ90CA-M3/61 is manufactured using the same die and process as AEC-Q101-qualified variants (e.g., SMAJ90CAHM3_X). While the M3/61 suffix denotes commercial-grade qualification, its electrical specs, thermal performance, and construction meet automotive environmental demands-many Tier 1 suppliers deploy it in non-safety-critical modules with internal validation.
How does SMAJ90CA-M3/61 differ from SMAJ90A-M3/61?
SMAJ90CA-M3/61 is bidirectional with no polarity marking and symmetric clamping in both directions; SMAJ90A-M3/61 is unidirectional, marked with a cathode band, and only clamps reverse-biased surges. Both share identical VWM, VBR, VC, and PPPM, but layout and system topology dictate selection.
What is the maximum operating temperature for SMAJ90CA-M3/61?
The SMAJ90CA-M3/61 has a maximum junction temperature (TJ) rating of +150 °C and is characterized up to that limit. Its thermal resistance (RθJA) is 120 °C/W on standard 0.2" × 0.2" copper pads, allowing reliable operation in under-hood or enclosed industrial enclosures with appropriate board-level thermal design.
Does SMAJ90CA-M3/61 require special PCB layout considerations?
Yes-SMAJ90CA-M3/61 should be placed as close as possible to the protected node with short, low-inductance traces to ground. The recommended pad layout per Vishay is 0.2" × 0.2" (5.0 mm × 5.0 mm) copper per terminal; deviation reduces surge current handling and increases clamping voltage due to parasitic inductance.
SMAJ90CA-M3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 2.1A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
SMAJ90CA-M3/61 FAQ
1.How can I place an order for SMAJ90CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ90CA-M3/61 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 SMAJ90CA-M3/61 reliable?
The price and inventory of SMAJ90CA-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ90CA-M3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ90CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ90CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ90CA-M3/61?
SMAJ90CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ90CA-M3/61 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 SMAJ90CA-M3/61?
For technical support, including SMAJ90CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ90CA-M3/61 requirements.
6.How does Aetrix verify that SMAJ90CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ90CA-M3/61 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 SMAJ90CA-M3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ90CA-M3/61?
All SMAJ90CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ90CA-M3/61, 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 SMAJ90CA-M3/61 part is unused and in its original packaging.
Return procedure for SMAJ90CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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