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Vishay General Semiconductor - Diodes Division SMAJ110CA-M3/61
- Part No.:
- SMAJ110CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ110CA-M3/61.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,530
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Product details
Overview
SMAJ110CA-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 110 V stand-off voltage (VWM), 122–135 V breakdown voltage (VBR) at 1 mA, 177 V maximum clamping voltage (VC) at 1.7 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform). It is used to protect MOSFETs, ICs, and sensor signal lines in industrial motor drives and automotive body control modules.
For engineers reviewing the SMAJ110CA-M3/61 datasheet, SMAJ110CA-M3/61 pinout, SMAJ110CA-M3/61 application, or SMAJ110CA-M3/61 equivalent, key selection criteria include bidirectional clamping capability, 177 V VC under 1.7 A surge, MSL Level 1 moisture sensitivity, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This device operates as a voltage-clamped crowbar during transient events - conducting only when reverse voltage exceeds VBR, with low incremental surge resistance ensuring stable clamping across surge amplitude. Its bidirectional symmetry enables protection of AC-coupled or floating signal paths without polarity concerns.
The SMAJ110CA-M3/61 uses a glass-passivated silicon junction for robust surge handling and fast response (<1 ns), and its thermal resistance (RθJA = 120 °C/W) requires PCB copper pad design per Vishay's 0.2" × 0.2" (5.0 mm × 5.0 mm) recommendation to sustain 400 W peak pulse power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 122 V / 135 V at 1 mA - Confirmed breakdown range defining turn-on threshold tolerance |
| VC @ IPPM | 177 V at 1.7 A - Clamped voltage seen by protected circuit during full-rated 10/1000 μs surge |
| PPPM | 400 W (10/1000 μs) - Peak transient energy absorption capacity under standard waveform |
| ID @ VWM | 1.0 μA - Reverse leakage current at stand-off voltage, critical for low-power sensor line integrity |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMA (DO-214AC) - Surface-mount outline with 2.54 mm lead pitch, compatible with automated placement |
Pinout & Package
Two-terminal bidirectional device in SMA (DO-214AC) package; no polarity marking. Terminals are matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, with MSL Level 1 rating (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge conduction path | No functional distinction - either terminal serves as input/output for transient clamping in both directions |
| Case (SMA body) | Thermal and mechanical interface | Non-electrical; provides mechanical mounting and contributes to thermal dissipation via PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC, differential, or floating lines without external polarity management |
| 400 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV/2 Ω) on 12–48 V DC rails with proper layout |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for industrial and automotive end equipment without compromising surge performance |
| MSL Level 1 rating | Allows direct placement into high-temperature reflow processes without pre-baking, reducing manufacturing complexity |
| AEC-Q101 qualification path | HM3 variant available - supports qualification for automotive applications including body electronics and infotainment power rails |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate driver supply rails against inductive kickback from relay coils and solenoid switching. IC Role / Device Role / Timing Role: Voltage clamping element placed across 12 V or 24 V logic supply inputs to suppress >1 kV transients. Use Value: Limits rail voltage to ≤177 V during 1.7 A surge, preventing latch-up or permanent damage to MCU and driver ICs. | Use Scenario: Safeguarding LIN bus transceiver signal lines from ESD and load dump coupling in door module ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across LIN data pair (LIN_H/L) to clamp ±30 kV ESD and coupled transients. Use Value: Maintains signal integrity below 177 V clamping level while adding <1 pF junction capacitance, preserving 20 kbps LIN timing margins. |
| Consumer Power Adapters | Telecom PoE Injectors |
Use Scenario: Secondary-side overvoltage suppression on 5–19 V DC outputs of USB-C PD adapters exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Final-stage TVS connected between output rail and ground to absorb residual transients escaping primary-side protection. Use Value: Delivers 400 W surge handling with 1.0 μA leakage at 110 V, minimizing standby power loss while meeting UL 62368-1 transient immunity. | Use Scenario: DC bias rail protection in IEEE 802.3af/at PoE injectors where 48 V phantom power is susceptible to field wiring transients. IC Role / Device Role / Timing Role: Bidirectional clamping device across PSE output terminals to limit voltage excursions during cable hot-plug or fault events. Use Value: Withstands repetitive 10/1000 μs surges up to 400 W, enabling compliance with IEC 61000-4-5 Ed. 3 for Class A PoE infrastructure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110A-M3/61 | Unidirectional version - cathode-marked, conducts only in reverse direction | Requires correct polarity placement; unsuitable for AC or floating nodes | Select only when protecting unidirectional DC rails with known polarity and no risk of reverse voltage exposure |
| SMBJ110CA-M3/61 | Same VWM/VBR/VC specs but in SMB (DO-214AA) package - 20 % larger footprint, 50 % higher PPPM (600 W) | Higher surge margin but incompatible PCB land pattern; requires layout change | Choose when system-level surge testing exceeds 400 W or when thermal budget allows larger package |
Compared with SMAJ110A-M3/61, the SMAJ110CA-M3/61 eliminates polarity dependency for flexible layout; compared with SMBJ110CA-M3/61, it offers identical electrical protection in a space-constrained SMA footprint - ideal for dense industrial PCBs where 400 W surge margin suffices.
Availability
SMAJ110CA-M3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, consumer power adapters, and telecom PoE injectors requiring stable component supply with halogen-free compliance and MSL Level 1 reflow compatibility.
Supply support for SMAJ110CA-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, power efficiency, and automotive-grade qualification.
The SMAJ series is engineered for robust transient suppression in harsh environments - targeting industrial automation, automotive subsystems, and telecom infrastructure where compact size, repeatable clamping, and AEC-Q101 readiness are essential.
FAQ
What is the clamping voltage of SMAJ110CA-M3/61 under full-rated surge current?
The SMAJ110CA-M3/61 has a maximum clamping voltage (VC) of 177 V when subjected to its rated peak pulse current (IPPM) of 1.7 A using the 10/1000 μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events. The SMAJ110CA-M3/61 maintains this clamping performance across its specified operating temperature range.
Is SMAJ110CA-M3/61 suitable for automotive applications?
The SMAJ110CA-M3/61 is halogen-free and RoHS-compliant, with an M3 suffix indicating commercial-grade qualification. While not AEC-Q101 qualified itself, the HM3 variant (e.g., SMAJ110CA-HM3/61) is AEC-Q101 qualified. Engineers selecting SMAJ110CA-M3/61 for automotive use must verify system-level qualification requirements; the SMAJ110CA-M3/61 serves as the base platform for such qualification.
How does the bidirectional design of SMAJ110CA-M3/61 affect PCB layout?
The bidirectional nature of SMAJ110CA-M3/61 eliminates polarity constraints - no cathode band marking is present, and either terminal may connect to the line or ground. This simplifies layout for AC-coupled interfaces, differential buses, or floating sensors. Unlike unidirectional variants, SMAJ110CA-M3/61 avoids risk of incorrect orientation during assembly, reducing rework in high-volume production.
What is the thermal resistance and recommended PCB layout for SMAJ110CA-M3/61?
The SMAJ110CA-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended pads. Vishay specifies 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve full 400 W pulse power rating. Reducing pad area de-rates power handling - the SMAJ110CA-M3/61 must be placed accordingly to avoid thermal runaway during repetitive surges.
Does SMAJ110CA-M3/61 meet moisture sensitivity and reflow requirements for automated assembly?
Yes, SMAJ110CA-M3/61 meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. It requires no baking prior to SMT placement and is compatible with standard lead-free reflow profiles. The matte tin-plated leads comply with J-STD-002 and JESD 22-B102, ensuring reliable solder joint formation - a key requirement for high-yield manufacturing of the SMAJ110CA-M3/61.
SMAJ110CA-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):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- Current - Peak Pulse (10/1000µs):
- 1.7A
- Power - Peak Pulse:
- 300W
- 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)
SMAJ110CA-M3/61 FAQ
1.How can I place an order for SMAJ110CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ110CA-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 SMAJ110CA-M3/61 reliable?
The price and inventory of SMAJ110CA-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 SMAJ110CA-M3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ110CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ110CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ110CA-M3/61?
SMAJ110CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ110CA-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 SMAJ110CA-M3/61?
For technical support, including SMAJ110CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ110CA-M3/61 requirements.
6.How does Aetrix verify that SMAJ110CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ110CA-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 SMAJ110CA-M3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ110CA-M3/61?
All SMAJ110CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ110CA-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 SMAJ110CA-M3/61 part is unused and in its original packaging.
Return procedure for SMAJ110CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ110CA-M3/61 Tags
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