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Vishay General Semiconductor - Diodes Division SMAJ60CA-M3/5A
- Part No.:
- SMAJ60CA-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60CA-M3/5A.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,189
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Product details
Overview
SMAJ60CA-M3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 60 V stand-off voltage (VWM), 66.7–73.7 V breakdown voltage (VBR) at 1 mA, 96.8 V maximum clamping voltage (VC) at 4.1 A peak pulse current, and 400 W peak pulse power (10/1000 μs waveform), used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMAJ60CA-M3/5A datasheet, SMAJ60CA-M3/5A pinout, SMAJ60CA-M3/5A application, or SMAJ60CA-M3/5A equivalent, this device is selected for robust ESD and surge protection where bidirectional clamping, low leakage (<1.0 μA at VWM), halogen-free RoHS compliance, and AEC-Q101 qualification readiness are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical breakdown and clamping characteristics in forward and reverse directions. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling consistent clamping performance under repetitive 10/1000 μs transients up to 0.01% duty cycle.
The device is rated for TJ = –55 °C to +150 °C operation, with thermal resistance RθJA = 120 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 30 °C/W, supporting reliable thermal dissipation in compact PCB layouts without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 60 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 48 V nominal systems. |
| VBR (min/max) | 66.7 V / 73.7 V at IT = 1 mA - Confirmed breakdown range ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 96.8 V at 4.1 A - Clamping voltage limits downstream component stress during 400 W transient surges. |
| IPPM | 4.1 A - Peak pulse current capability with 10/1000 μs waveform; determines minimum trace width and layout robustness. |
| PPPM | 400 W - Peak pulse power rating defines energy-handling capacity for lightning-induced or inductive-switching transients. |
| ID @ VWM | <1.0 μA - Ultra-low reverse leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max. | +150 °C - Enables use in under-hood automotive and high-ambient industrial environments. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C reflow peak). Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Bidirectional construction - no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Conducts surge current when voltage falls below –VBR; connects to protected line or ground reference. |
| Cathode | Transient current entry (positive polarity) | Conducts surge current when voltage exceeds +VBR; connects to same protected line as Anode for bidirectional clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power (10/1000 μs) | Handles IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge events without degradation. |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for automotive and industrial end-equipment. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage overshoot during fast transients, reducing risk to downstream logic-level ICs. |
| MSL Level 1 moisture sensitivity | Allows standard SMT assembly without dry-pack or baking, lowering manufacturing cost and complexity. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs against load-dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamps positive and negative voltage spikes on power input rails before they reach DC-DC converters and microcontrollers. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V logic circuitry by limiting rail voltage to ≤96.8 V during 400 W surges. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) from ESD and field wiring faults. IC Role / Device Role / Timing Role: Placed across signal and return lines to shunt fast transients (<1 ns rise time) while maintaining <1 μA leakage at 24 V. Use Value: Preserves measurement accuracy and avoids false triggering in PLC analog input modules exposed to factory floor noise. |
| Telecom Interface Surge Suppression | Consumer Device USB Port Protection |
Use Scenario: Safeguarding Ethernet PHYs and PoE injectors against induced lightning surges on twisted-pair lines. IC Role / Device Role / Timing Role: Bidirectional clamping element placed differential-mode across data pairs, referenced to chassis ground. Use Value: Limits common-mode surge energy to safe levels without distorting 100BASE-TX signaling due to low capacitance and symmetric VBR. |
Use Scenario: Adding secondary overvoltage protection on VBUS lines of USB-C ports in portable monitors and docking stations. IC Role / Device Role / Timing Role: Secondary TVS after primary polymer PTC, clamping VBUS to ≤96.8 V during hot-plug or adapter fault conditions. Use Value: Complements primary protection to meet UL 62368-1 transient immunity requirements without compromising 3 A charging current capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60CA-E3/5A | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | Acceptable for commercial-grade designs where halogen-free is not mandated. | Select E3 for cost-sensitive non-automotive applications; M3 required for automotive Tier 1 supply chain compliance. |
| SMBJ60CA-M3 | Higher 600 W PPPM, larger SMB (DO-214AA) package, same VWM/VC ratings. | Better suited for higher-energy surges (e.g., IEC 61000-4-5 Level 4); requires larger PCB footprint. | Choose SMBJ60CA-M3 when system-level surge testing exceeds 400 W; retain SMAJ60CA-M3 for space-constrained 48 V modules. |
Compared with SMAJ60CA-E3/5A, the M3 variant adds halogen-free compliance without sacrificing clamping performance; versus SMBJ60CA-M3, it trades 50% lower surge rating for 30% smaller board area-making SMAJ60CA-M3/5A optimal for compact, automotive-qualified 48 V subsystems.
Availability
SMAJ60CA-M3/5A is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC analog I/O cards, and telecom power interface designs requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification readiness.
Supply support for SMAJ60CA-M3/5A 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 delivers standardized transient suppression in compact surface-mount packages, engineered specifically for cost-effective, high-volume protection of power rails and signal paths in automotive, industrial, and communications equipment.
FAQ
What is the maximum clamping voltage of SMAJ60CA-M3/5A at its rated peak pulse current?
The SMAJ60CA-M3/5A has a maximum clamping voltage (VC) of 96.8 V at its rated peak pulse current (IPPM) of 4.1 A, measured using a 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet revision 09-Jan-2024 (Document Number: 88390) and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance remains stable across the full operating temperature range of –55 °C to +150 °C.
Is SMAJ60CA-M3/5A suitable for automotive applications?
SMAJ60CA-M3/5A is halogen-free and RoHS-compliant, and belongs to the AEC-Q101-qualified SMAJ family-though the specific M3/5A variant requires ordering with HE3 or HM3 suffixes (e.g., SMAJ60CAHM3_A/I) for formal AEC-Q101 certification. As shipped, SMAJ60CA-M3/5A meets all electrical and mechanical specifications required for automotive use, including MSL Level 1, 150 °C junction rating, and robust surge capability, making it suitable for pre-qualification integration in body electronics and power distribution units.
How does the bidirectional configuration of SMAJ60CA-M3/5A affect its PCB layout?
The bidirectional configuration of SMAJ60CA-M3/5A eliminates polarity marking and allows placement across any two nodes requiring symmetrical overvoltage protection-such as differential signal pairs or AC-coupled power rails. Unlike unidirectional TVS diodes, SMAJ60CA-M3/5A has no cathode band; both terminals are functionally identical. Layout requires equal-length, impedance-matched traces to both terminals and adherence to the recommended 0.2" × 0.2" copper pad per terminal to maintain specified thermal and surge performance.
What is the reverse leakage current of SMAJ60CA-M3/5A at its stand-off voltage?
At its 60 V stand-off voltage (VWM), the SMAJ60CA-M3/5A exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C, per the Vishay datasheet. This ultra-low leakage ensures minimal power loss in always-on circuits and prevents unintended biasing of sensitive analog front-ends. Leakage increases with temperature but remains below 5 μA up to 125 °C, verified in thermal characterization curves (Fig. 2).
Can SMAJ60CA-M3/5A replace SMAJ60A-M3/5A in a design?
No-SMAJ60CA-M3/5A is bidirectional, while SMAJ60A-M3/5A is unidirectional. Substituting them without circuit review risks failure: SMAJ60A-M3/5A conducts only in reverse bias and blocks forward current, whereas SMAJ60CA-M3/5A clamps in both directions. In DC-coupled applications, SMAJ60A-M3/5A would short the forward-biased rail. SMAJ60CA-M3/5A must be used only where symmetrical clamping is intended, such as AC lines, floating sensors, or dual-rail protection schemes.
SMAJ60CA-M3/5A 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):
- 60V
- Voltage - Breakdown (Min):
- 66.7V
- Voltage - Clamping (Max) @ Ipp:
- 96.8V
- Current - Peak Pulse (10/1000µs):
- 4.1A
- 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)
SMAJ60CA-M3/5A FAQ
1.How can I place an order for SMAJ60CA-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60CA-M3/5A 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 SMAJ60CA-M3/5A reliable?
The price and inventory of SMAJ60CA-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ60CA-M3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ60CA-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60CA-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60CA-M3/5A?
SMAJ60CA-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60CA-M3/5A 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 SMAJ60CA-M3/5A?
For technical support, including SMAJ60CA-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60CA-M3/5A requirements.
6.How does Aetrix verify that SMAJ60CA-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ60CA-M3/5A 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 SMAJ60CA-M3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ60CA-M3/5A?
All SMAJ60CA-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60CA-M3/5A, 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 SMAJ60CA-M3/5A part is unused and in its original packaging.
Return procedure for SMAJ60CA-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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