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Vishay General Semiconductor - Diodes Division SMAJ58CA-M3/61
- Part No.:
- SMAJ58CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ58CA-M3/61.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,650
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Product details
Overview
SMAJ58CA-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 signal or power lines. It features a 58 V stand-off voltage (VWM), 64.4–71.2 V breakdown voltage (VBR) at 1 mA, and clamps to ≤93.6 V at 4.3 A peak pulse current (IPPM) under 10/1000 μs waveform - protecting MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMAJ58CA-M3/61 datasheet, SMAJ58CA-M3/61 pinout, SMAJ58CA-M3/61 application, or SMAJ58CA-M3/61 equivalent, key selection criteria include bidirectional clamping capability, 400 W peak pulse power rating (≤78 V), low incremental surge resistance, AEC-Q101 qualification eligibility (via HM3 suffix), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamping protection device across two terminals with symmetrical reverse/forward characteristics due to its bidirectional construction. Its glass-passivated junction enables fast response time (<1 ps) and stable clamping under repetitive transient events such as ESD, lightning-induced surges, and inductive switching spikes.
The device is rated for 150 °C maximum junction temperature, exhibits ±0.104 %/°C temperature coefficient of VBR, and delivers 93.6 V clamping voltage at 4.3 A IPPM - ensuring predictable overvoltage suppression without latch-up or thermal runaway when mounted on 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 58 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 64.4–71.2 V at 1 mA - Confirmed minimum/maximum voltage where device transitions into avalanche conduction |
| VC (Clamping Voltage) | ≤93.6 V at 4.3 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs transient; determines stress on downstream components |
| PPPM (Peak Pulse Power) | 400 W (10/1000 μs) - Energy-handling capacity for single non-repetitive surge; derates above 78 V to 300 W |
| IPPM (Peak Pulse Current) | 4.3 A - Maximum surge current the device safely shunts while maintaining specified VC |
| Junction Temp Range | −55 °C to +150 °C - Enables operation in under-hood automotive, industrial motor drives, and outdoor telecom equipment |
| Package | SMA (DO-214AC) - Low-profile, surface-mount package compatible with J-STD-020 MSL Level 1 reflow profiles (260 °C peak) |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; dimensions: 4.50 mm × 2.79 mm × 2.29 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | No polarity marking required; either terminal serves as input/output for clamping in both directions |
| Case (body) | Thermal and mechanical interface | Non-conductive epoxy body; heat dissipation relies on copper pad area (0.2″ × 0.2″ recommended per terminal) |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V/24 V DC lines |
| Low clamping ratio (VC/VWM ≈ 1.61) | Minimizes overvoltage stress on protected ICs while maintaining sufficient margin above normal operating voltage |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; supports high-yield automated SMT production |
| Halogen-free, RoHS-compliant (M3 suffix) | Fulfills environmental compliance requirements for automotive and industrial end-equipment without compromising reliability |
| Glass passivated junction | Ensures stable leakage performance (<1 μA at VWM) and long-term reliability under thermal cycling and humidity exposure |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver power rails from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between supply rail and ground, responding within picoseconds to suppress >100 V spikes. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V logic circuits while maintaining system uptime in 12 V vehicle architectures. |
Use Scenario: Safeguarding 24 V digital input channels from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff voltage-aligned TVS placed across input optocoupler terminals to clamp transients before isolation barrier. Use Value: Eliminates need for external RC snubbers; reduces BOM count and PCB space while meeting IEC 61000-4-4 Level 3 immunity. |
| Telecom Remote Sensor Node | Consumer Appliance Motor Driver |
|
Use Scenario: Shielding RS-485 data lines and power inputs of battery-backed wireless sensors deployed outdoors. IC Role / Device Role / Timing Role: Symmetrical transient suppressor bridging differential pair and ground, handling bidirectional ESD and lightning-coupled surges. Use Value: Maintains signal integrity up to 10 Mbps while surviving ±15 kV contact ESD per IEC 61000-4-2 without degradation. |
Use Scenario: Clamping voltage spikes generated by brushed DC motor commutation in washing machine or HVAC blower modules. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to divert inductive kickback energy away from driver FETs and MCU. Use Value: Extends MOSFET lifetime by limiting drain-source voltage overshoot to <94 V, avoiding avalanche failure during frequent start-stop cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA-E3/61 | RoHS-compliant but not halogen-free; same electrical specs and package; no AEC-Q101 qualification path | Suitable for commercial/industrial use where halogen-free requirement is not mandated | Select when cost sensitivity outweighs halogen-free compliance or automotive qualification needs |
| SMAJ58A-M3/61 | Unidirectional version; cathode band marked; identical VWM, VBR, VC, and PPPM; requires correct polarity placement | Applicable only where transient direction is known and unidirectional protection suffices (e.g., DC power input) | Choose only if circuit topology guarantees consistent polarity and avoids reverse-bias risk on protected line |
Compared with SMAJ58CA-M3/61, the E3 variant trades halogen-free content for lower cost in non-automotive settings, while the unidirectional SMAJ58A-M3/61 demands careful layout orientation but offers identical clamping performance where polarity is controlled.
Availability
SMAJ58CA-M3/61 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, telecom sensor interfaces, and consumer appliance motor control requiring stable component supply and halogen-free compliance.
Supply support for SMAJ58CA-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 board-level transient protection in harsh environments, delivering standardized 400 W surge capability in compact surface-mount packages for automotive, industrial, and communications infrastructure.
FAQ
What is the clamping voltage of SMAJ58CA-M3/61 at its rated peak pulse current?
The SMAJ58CA-M3/61 clamps to a maximum of 93.6 V at its rated peak pulse current of 4.3 A under the standard 10/1000 μs waveform. This value is measured with the device mounted on 0.2″ × 0.2″ copper pads per terminal and represents the upper limit of voltage imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMAJ58CA-M3/61 qualified for automotive applications?
The SMAJ58CA-M3/61 itself is not AEC-Q101 qualified; however, it belongs to the SMAJ family for which Vishay offers AEC-Q101 variants under HM3 suffixes (e.g., SMAJ58CAHM3_A/H). The M3 suffix confirms halogen-free, RoHS-compliant construction suitable for automotive-adjacent industrial and consumer applications where full qualification is not mandatory.
How does the bidirectional design of SMAJ58CA-M3/61 affect PCB layout?
The bidirectional design of SMAJ58CA-M3/61 eliminates polarity constraints: no cathode band marking is present, and either terminal may connect to the line or ground. This simplifies layout by removing orientation checks during automated placement and allows symmetric placement across differential signals or AC-coupled lines - reducing design iteration time and assembly errors compared to unidirectional alternatives like SMAJ58A-M3/61.
What is the thermal resistance of SMAJ58CA-M3/61, and how does it impact power dissipation?
SMAJ58CA-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W. These values mean that under continuous DC conditions, the device dissipates only 3.3 W - but during transient events, heat is localized and short-lived. Effective PCB copper pad area (≥5.0 mm × 5.0 mm per terminal) is essential to sustain repeated 400 W pulses without exceeding the 150 °C maximum junction temperature.
Can SMAJ58CA-M3/61 replace SMAJ58A-M3/61 in an existing design?
No - SMAJ58CA-M3/61 cannot directly replace SMAJ58A-M3/61 without layout review. While both share identical VWM, VBR, and clamping performance, the unidirectional SMAJ58A-M3/61 requires correct cathode orientation to function, whereas the bidirectional SMAJ58CA-M3/61 has no polarity. Swapping them risks improper clamping behavior if the original design relied on directional conduction or included series blocking diodes.
SMAJ58CA-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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 4.3A
- 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)
SMAJ58CA-M3/61 FAQ
1.How can I place an order for SMAJ58CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ58CA-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 SMAJ58CA-M3/61 reliable?
The price and inventory of SMAJ58CA-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 SMAJ58CA-M3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ58CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ58CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ58CA-M3/61?
SMAJ58CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ58CA-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 SMAJ58CA-M3/61?
For technical support, including SMAJ58CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ58CA-M3/61 requirements.
6.How does Aetrix verify that SMAJ58CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ58CA-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 SMAJ58CA-M3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ58CA-M3/61?
All SMAJ58CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ58CA-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 SMAJ58CA-M3/61 part is unused and in its original packaging.
Return procedure for SMAJ58CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ58CA-M3/61 Tags
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