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Vishay General Semiconductor - Diodes Division SMAJ60CA-M3/61
- Part No.:
- SMAJ60CA-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ60CA-M3/61.pdf
- Description:
- TVS DIODE 60VWM 96.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMAJ60CA-M3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection of sensitive electronics. It features a 60 V standoff 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), commonly deployed on power rails and signal lines in industrial motor drives and automotive body control modules.
For engineers reviewing the SMAJ60CA-M3/61 datasheet, SMAJ60CA-M3/61 pinout, SMAJ60CA-M3/61 application, or SMAJ60CA-M3/61 equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VWM = 1.61), MSL Level 1 moisture sensitivity, halogen-free RoHS compliance (M3 suffix), and DO-214AC package compatibility with automated SMT assembly.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering identical clamping behavior above ±60 V standoff. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response (<1.0 ns), enabling effective suppression of ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and surge (IEC 61000-4-5) transients.
The device is rated for 400 W peak pulse power up to 78 V and derates to 300 W above that threshold, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). It supports operating junction temperatures from –55 °C to +150 °C and meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 60 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 48 V DC systems. |
| VBR min/max | 66.7 V / 73.7 V at 1 mA - Confirmed breakdown range ensures reliable turn-on without premature conduction under normal operation. |
| VC @ IPPM | 96.8 V at 4.1 A - Clamping voltage limits downstream IC stress during 10/1000 μs surges; clamping ratio = 1.61. |
| PPPM | 400 W (≤78 V), 300 W (>78 V) - Peak surge power handling capability with standard 10/1000 μs waveform per IEC 61000-4-5. |
| IPPM | 4.1 A - Peak pulse current corresponding to VC; derived from PPPM/VC and validated per Fig. 1 curve. |
| Junction Temp | –55 °C to +150 °C - Wide operating range supports under-hood automotive and industrial environments. |
| Package | SMA (DO-214AC) - Surface-mount package with 5.28 mm × 4.50 mm footprint, compatible with IPC-7351B standard land patterns. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C reflow peak), no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; symmetrical with Cathode for bidirectional operation. |
| Cathode | Transient current entry (positive polarity) | Accepts reverse surge current during positive transients; functionally identical to Anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions enables single-device protection of AC-coupled or floating signal lines. |
| 400 W peak pulse power | Withstands 10/1000 μs surges up to 400 W below 78 V, meeting IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-ground) requirements. |
| Low clamping ratio | VC/VWM = 1.61 minimizes voltage overshoot across protected circuitry, reducing risk of latch-up or gate oxide damage in MOSFETs and ICs. |
| Halogen-free & RoHS | M3 suffix confirms halogen-free molding compound and full RoHS compliance, satisfying automotive and industrial environmental mandates. |
| Automated placement ready | Low-profile SMA package with standardized lead geometry supports high-yield pick-and-place assembly at >30,000 UPH. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 48 V power distribution networks against load dump and inductive switching spikes in PLC-controlled conveyor systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across DC bus inputs to clamp transients before they reach gate drivers and microcontrollers. Use Value: Limits transient voltage to ≤96.8 V, preventing overvoltage failure of 100 V-rated MOSFETs and maintaining system uptime in harsh factory environments. |
Use Scenario: Surge suppression on LIN bus lines and sensor supply rails exposed to battery transients and alternator ripple in door module ECUs. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between LIN signal and ground to absorb EFT bursts while preserving signal integrity. Use Value: Sub-1 ns response time ensures clamping occurs before LIN transceiver input stages are stressed, supporting ISO 17987-4 compliance. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
Use Scenario: Input-stage protection of 48 V telecom rectifiers subjected to lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Primary-level TVS on AC/DC front-end to divert energy before it reaches bulk capacitors and PWM controllers. Use Value: 400 W rating handles repetitive 10/1000 μs surges without degradation, extending mean time between failures in remote base stations. |
Use Scenario: Overvoltage safeguard for microcontroller I/O pins and relay coil flyback paths in smart washing machine main boards. IC Role / Device Role / Timing Role: Localized TVS on 5 V/3.3 V logic rails and 12 V actuator outputs to prevent latch-up during ESD events. Use Value: Low leakage (<1.0 μA) avoids loading of high-impedance sensor inputs, ensuring accurate ADC readings during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ60CA-E3/61 | Same electrical specs, but RoHS-compliant with brominated flame retardant (non-halogen-free); JEDEC MSL Level 1, same DO-214AC package. | Approved for commercial-grade industrial use where halogen-free requirement is not mandated (e.g., non-automotive consumer products). | Select SMAJ60CA-E3/61 when halogen-free certification is unnecessary and cost optimization is prioritized. |
| SMBJ60CA-M3 | Higher 600 W peak pulse power (10/1000 μs), larger SMB (DO-214AA) package (5.28 mm × 4.57 mm), same VWM/VC ratings. | Suitable for higher-energy surge environments (e.g., outdoor telecom cabinets) where PCB space allows larger footprint. | Choose SMBJ60CA-M3 when system-level surge testing exceeds 400 W and layout permits SMB package. |
Compared with SMAJ60CA-M3/61, SMAJ60CA-E3/61 offers identical protection performance with lower material cost but lacks halogen-free compliance, while SMBJ60CA-M3 provides 50 % higher surge capacity at the expense of board area and thermal resistance-making SMAJ60CA-M3/61 optimal for space-constrained, automotive-qualified 48 V designs requiring halogen-free materials.
Availability
SMAJ60CA-M3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, long-term lifecycle support, and halogen-free compliance.
Supply support for SMAJ60CA-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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific design.
The SMAJ series was developed for surface-mount transient suppression in space-constrained, high-reliability applications including automotive, industrial automation, and communications infrastructure-prioritizing low clamping, fast response, and robust surge handling in DO-214AC packaging.
FAQ
What is the maximum clamping voltage of SMAJ60CA-M3/61 under a 10/1000 μs surge?
The SMAJ60CA-M3/61 has a maximum clamping voltage (VC) of 96.8 V at its rated peak pulse current of 4.1 A, measured with a 10/1000 μs waveform per IEC 61000-4-5. This value is confirmed in the Vishay datasheet (Document Number: 88390, Rev. 09-Jan-2024) Table on page 2 for the SMAJ60CA variant. The clamping performance remains consistent across both polarities due to its bidirectional construction.
Is SMAJ60CA-M3/61 qualified for automotive applications?
SMAJ60CA-M3/61 itself is not AEC-Q101 qualified; only variants with HE3 or HM3 suffixes (e.g., SMAJ60CAHM3_X) carry AEC-Q101 qualification. The M3 suffix indicates halogen-free RoHS compliance and commercial-grade reliability. For automotive use, engineers must specify SMAJ60CAHM3_X with appropriate revision code (e.g., A, B) and verify qualification status via Vishay's official documentation or authorized distributor records.
What is the standoff voltage and breakdown range for SMAJ60CA-M3/61?
The SMAJ60CA-M3/61 has a reverse standoff voltage (VWM) of 60 V and a minimum/maximum breakdown voltage (VBR) of 66.7 V / 73.7 V at 1 mA test current. These values are specified in the Vishay datasheet (88390, p.2) and define the voltage window within which the device remains non-conductive during normal operation while reliably triggering during overvoltage events.
Does SMAJ60CA-M3/61 have polarity markings on the package?
No, SMAJ60CA-M3/61 does not feature polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SMAJ60A), which use a cathode band, the CA version exhibits symmetrical electrical behavior in both directions and therefore omits external polarity indicators. PCB layout must treat both terminals as functionally equivalent for transient current conduction.
What is the thermal resistance and maximum junction temperature of SMAJ60CA-M3/61?
SMAJ60CA-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and a junction-to-lead resistance (RθJL) of 30 °C/W, measured on 0.2" × 0.2" copper pads. Its maximum operating junction temperature is +150 °C, with storage temperature ranging from –55 °C to +150 °C. These parameters are critical for thermal design in enclosed or high-ambient-temperature applications such as engine bay electronics.
SMAJ60CA-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):
- 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-M3/61 FAQ
1.How can I place an order for SMAJ60CA-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ60CA-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 SMAJ60CA-M3/61 reliable?
The price and inventory of SMAJ60CA-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 SMAJ60CA-M3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ60CA-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ60CA-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ60CA-M3/61?
SMAJ60CA-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ60CA-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 SMAJ60CA-M3/61?
For technical support, including SMAJ60CA-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ60CA-M3/61 requirements.
6.How does Aetrix verify that SMAJ60CA-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ60CA-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 SMAJ60CA-M3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ60CA-M3/61?
All SMAJ60CA-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ60CA-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 SMAJ60CA-M3/61 part is unused and in its original packaging.
Return procedure for SMAJ60CA-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ60CA-M3/61 Tags
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