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Vishay General Semiconductor - Diodes Division SMAJ13A-M3/61
- Part No.:
- SMAJ13A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ13A-M3/61.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,280
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Product details
Overview
SMAJ13A-M3/61 from Vishay General Semiconductor is a unidirectional 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 13 V stand-off voltage (VWM), 14.4–15.9 V breakdown voltage (VBR) at 1 mA, 21.5 V maximum clamping voltage (VC) at 18.6 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform), commonly deployed to protect MOSFETs and ICs in automotive and industrial power supplies.
For engineers reviewing the SMAJ13A-M3/61 datasheet, SMAJ13A-M3/61 pinout, SMAJ13A-M3/61 application, or SMAJ13A-M3/61 equivalent, key selection criteria include unidirectional polarity, 1.0 μA max reverse leakage at VWM, 150 °C max junction temperature, MSL Level 1 moisture sensitivity, and halogen-free RoHS compliance per Vishay's M3 suffix designation.
Technical Context
This TVS diode operates as a clamping device-conducting above its breakdown threshold to limit transient overvoltage across protected circuit nodes. Its glass-passivated junction ensures stable avalanche characteristics, while low incremental surge resistance enables effective energy diversion during fast-rising transients (e.g., ISO 7637-2 load dump or ESD events).
The SMAJ13A-M3/61 delivers repeatable clamping performance under 0.01% duty cycle conditions, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). It meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes, though the M3/61 variant is commercial-grade and halogen-free.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC bias margin. |
| VBR min/max | 14.4 V / 15.9 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on under transient stress. |
| VC @ IPPM | 21.5 V at 18.6 A - Clamped voltage during 10/1000 μs surge; determines worst-case overvoltage seen by downstream ICs. |
| PPPM | 400 W - Peak pulse power handling (10/1000 μs); supports robust protection against common automotive and industrial surges. |
| ID @ VWM | ≤1.0 μA - Reverse leakage at rated stand-off; critical for low-power sensor or battery-backed circuits. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood or enclosed industrial environments. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.28 mm × 4.50 mm footprint; compatible with automated placement and reflow. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, MSL Level 1, 260 °C peak reflow profile. Cathode indicated by band on body; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current toward ground or lower-potential rail during overvoltage event. |
| Anode (unbanded end) | Reference node connection | Typically tied to GND or return path; completes clamping loop and establishes reference for VWM/VBR specification. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly designed interfaces. |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage overshoot relative to breakdown, improving margin for 12 V logic and gate drivers. |
| Glass passivated junction | Ensures stable, repeatable avalanche behavior over temperature and lifetime; reduces parameter drift. |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and consumer electronics without compromising surge rating. |
| MSL Level 1 rating | Enables standard SMT assembly without baking; simplifies manufacturing flow for high-volume production. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Guarding |
|---|---|
|
Use Scenario: Protecting 12 V power rails in vehicle body control modules from load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between input rail and chassis ground. Use Value: Limits transient voltage to ≤21.5 V, safeguarding 36 V-rated DC-DC controllers and microcontrollers without derating. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) in factory-floor pressure sensors from ESD and cable coupling noise. IC Role / Device Role / Timing Role: Low-leakage (≤1.0 μA) clamping element mounted at connector interface. Use Value: Prevents latch-up in precision op-amps by clamping sub-100 ns ESD pulses while adding negligible offset error. |
| Consumer USB Port Surge Suppression | Telecom DC Feeder Line Protection |
|
Use Scenario: Safeguarding USB VBUS lines in portable docking stations against hot-plug and inductive switching spikes. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) unidirectional suppressor on 5 V supply path. Use Value: Clamps 30 A 8/20 μs surges to <25 V, preserving USB PD negotiation integrity and preventing PHY damage. |
Use Scenario: Protecting -48 V DC feeder inputs in telecom remote radio units from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: High-energy (400 W) clamping diode installed at power entry PCB edge. Use Value: Withstands repeated 10/1000 μs transients up to 18.6 A, maintaining uptime in harsh outdoor deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A-E3/61 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | Preferred where halogen content is unrestricted; identical thermal and surge performance. | Select SMAJ13A-E3/61 for cost-sensitive commercial designs without halogen restrictions. |
| SMAJ13CA-M3/61 | Bidirectional version; symmetric VBR (14.4–15.9 V) in both polarities; same VWM and VC ratings. | Required for AC-coupled or floating signal lines where polarity reversal may occur (e.g., RS-485, CAN bus). | Choose SMAJ13CA-M3/61 only when bidirectional clamping is mandated by signal architecture. |
Compared with SMAJ13A-M3/61, the E3 variant offers identical protection performance without halogen-free assurance, while the CA variant adds polarity symmetry at no clamping voltage penalty-making it suitable only where AC or reversible transients dominate.
Availability
SMAJ13A-M3/61 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, and telecom DC feeder protection requiring stable component supply and halogen-free compliance.
Supply support for SMAJ13A-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, and protection devices with emphasis on reliability, surge robustness, and automotive qualification.
The SMAJ series targets board-level transient suppression in harsh environments, delivering standardized 400 W surge capability in compact SMA packages for cost-effective, high-yield manufacturing.
FAQ
What is the maximum clamping voltage of the SMAJ13A-M3/61 under a 10/1000 μs surge?
The SMAJ13A-M3/61 has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current of 18.6 A using the standard 10/1000 μs waveform. This value is measured at the device terminals under specified test conditions and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the SMAJ13A-M3/61 suitable for automotive applications?
The SMAJ13A-M3/61 is qualified for commercial use and meets RoHS and halogen-free requirements, but it is not AEC-Q101 qualified. For automotive applications requiring qualification, Vishay offers the SMAJ13A-HE3 or SMAJ13A-HM3 variants; the SMAJ13A-M3/61 may be used in non-safety-critical aftermarket or infotainment subsystems with proper system-level validation.
How does the M3 suffix differ from E3 in SMAJ13A-M3/61?
The M3 suffix indicates halogen-free, RoHS-compliant construction, whereas E3 denotes RoHS-compliant but standard brominated flame-retardant molding compound. Both share identical electrical specifications, thermal performance, and packaging-only material composition differs. SMAJ13A-M3/61 satisfies stricter environmental mandates such as IEC 61249-2-21.
What is the reverse leakage current of SMAJ13A-M3/61 at its 13 V stand-off voltage?
At the rated stand-off voltage (VWM) of 13 V and TA = 25 °C, the SMAJ13A-M3/61 exhibits a maximum reverse leakage current (ID) of 1.0 μA. This low leakage preserves efficiency in always-on or battery-powered systems and avoids false triggering in high-impedance sensing paths.
Can SMAJ13A-M3/61 be used in bidirectional signal protection?
No-SMAJ13A-M3/61 is unidirectional and must be oriented with cathode toward the protected line. For bidirectional protection (e.g., differential buses), the SMAJ13CA-M3/61 variant is required. Using SMAJ13A-M3/61 on AC or polarity-agnostic lines risks failure during negative transients due to lack of reverse avalanche capability.
SMAJ13A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 18.6A
- 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)
SMAJ13A-M3/61 FAQ
1.How can I place an order for SMAJ13A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ13A-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 SMAJ13A-M3/61 reliable?
The price and inventory of SMAJ13A-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 SMAJ13A-M3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ13A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ13A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ13A-M3/61?
SMAJ13A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ13A-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 SMAJ13A-M3/61?
For technical support, including SMAJ13A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ13A-M3/61 requirements.
6.How does Aetrix verify that SMAJ13A-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ13A-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 SMAJ13A-M3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ13A-M3/61?
All SMAJ13A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ13A-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 SMAJ13A-M3/61 part is unused and in its original packaging.
Return procedure for SMAJ13A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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