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Vishay General Semiconductor - Diodes Division SMAJ5.0A-M3/61
- Part No.:
- SMAJ5.0A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ5.0A-M3/61.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,479
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Product details
Overview
SMAJ5.0A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 5.0 V stand-off voltage (VWM), 6.40–7.07 V breakdown voltage (VBR) at 10 mA, 400 W peak pulse power (10/1000 μs), and clamps transients to ≤9.2 V at 43.5 A peak surge current - deployed in automotive infotainment power inputs, industrial sensor I/O interfaces, and USB port ESD protection circuits.
For engineers reviewing the SMAJ5.0A-M3/61 datasheet, SMAJ5.0A-M3/61 pinout, SMAJ5.0A-M3/61 application, or SMAJ5.0A-M3/61 equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, 800 μA maximum reverse leakage at VWM, 150 °C max junction temperature, and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates as a clamping device that transitions from high-impedance blocking state to low-impedance conduction when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and fast response (<1 ns), while the unidirectional configuration provides forward conduction capability with VF = 3.5 V at 25 A (per spec note).
The device is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine), supports MSL Level 1 moisture sensitivity, and achieves thermal resistance of 120 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads - enabling reliable operation in compact PCB layouts without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before significant leakage begins |
| VBR min/max | 6.40 V / 7.07 V at 10 mA - Tight breakdown window ensures predictable turn-on across production lots |
| VC @ IPPM | 9.2 V at 43.5 A - Clamping voltage defines worst-case stress seen by protected downstream ICs |
| PPPM | 400 W (10/1000 μs) - Peak transient energy absorption capacity under standardized surge waveform |
| ID @ VWM | 800 μA - Low leakage preserves battery life and signal integrity in always-on circuits |
| TJ max | +150 °C - Enables use in under-hood automotive and high-temperature industrial environments |
| Package | SMA (DO-214AC) - Standardized SMD footprint compatible with automated placement and reflow |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, single-ended cathode-marked case with matte tin-plated leads. Dimensions: 4.50 mm × 2.79 mm × 2.29 mm (L × W × H); polarity indicated by black band denoting cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side (e.g., GND or return path) in unidirectional protection configuration |
| Cathode (banded end) | Clamping output / Surge current sink | Connected to protected line (e.g., VCC or signal); conducts surge current to ground during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 12 V systems without degradation |
| Glass passivated junction | Ensures long-term VBR stability and low parameter drift over temperature and lifetime |
| Halogen-free & RoHS-compliant (M3) | Meets IPC-1752A material declaration requirements for green manufacturing and end-of-life recycling |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow profiles up to 260 °C peak without baking |
| AEC-Q101 qualified variant available | HE3/HM3 versions support automotive-grade reliability validation (not applicable to M3 suffix) |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-fed infotainment head unit exposed to load-dump transients up to 35 V. IC Role / Device Role / Timing Role: Primary clamping TVS placed upstream of DC-DC converter input. Use Value: Limits input voltage to ≤9.2 V during 43.5 A surges, preventing damage to buck controller and LDOs. | Use Scenario: 4–20 mA current loop interface in factory automation PLC module. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; SMAJ5.0A-M3/61 used unidirectionally on supply rail. Use Value: Blocks reverse polarity miswiring and suppresses inductive kickback from solenoid drivers. |
| USB 2.0 Data Line ESD Protection | Consumer Appliance DC Rail Protection |
Use Scenario: External USB port on smart home gateway subjected to ±8 kV contact ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Secondary-level TVS after series impedance, placed between connector and USB transceiver. Use Value: Clamps ESD pulses within 1 ns to <10 V, preserving signal integrity and avoiding transceiver latch-up. | Use Scenario: 5 V logic rail in white-goods control board with relay-driven motors. IC Role / Device Role / Timing Role: Unidirectional clamp on microcontroller VDD line adjacent to motor driver IC. Use Value: Absorbs 400 W inductive spikes without derating, maintaining system uptime during frequent actuator switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A-E3/61 | Same electrical specs; RoHS-compliant but not halogen-free; commercial grade only | No AEC-Q101 qualification path; unsuitable for automotive PPAP documentation | Select E3 for cost-sensitive consumer designs where halogen content is unrestricted |
| SMAJ5.0AHE3_A/H | Identical clamping and surge ratings; includes AEC-Q101 qualification and extended temperature screening | Approved for automotive powertrain and body electronics; requires additional qualification documentation | Choose HE3 for automotive OEM or Tier 1 programs requiring certified reliability evidence |
Compared with SMAJ5.0A-M3/61, the E3 variant offers identical protection performance at lower material cost but lacks halogen-free certification, while the HE3 variant adds automotive qualification overhead and cost - making M3 the optimal balance for industrial and high-reliability commercial applications requiring green compliance without automotive validation.
Availability
SMAJ5.0A-M3/61 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor modules, and consumer appliance power supplies requiring stable component supply, halogen-free compliance, and robust 400 W transient immunity.
Supply support for SMAJ5.0A-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 was engineered for high-energy transient suppression in space-constrained surface-mount applications - targeting automotive, industrial, and computing systems where fast clamping, low leakage, and standardized packaging are critical.
FAQ
What is the maximum clamping voltage of SMAJ5.0A-M3/61 under surge conditions?
The SMAJ5.0A-M3/61 exhibits a maximum clamping voltage (VC) of 9.2 V when subjected to its rated peak pulse current of 43.5 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 - critical for ensuring downstream ICs remain within absolute maximum ratings.
Does SMAJ5.0A-M3/61 support bidirectional transient suppression?
No, SMAJ5.0A-M3/61 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional operation, the SMAJ5.0CA variant must be selected. The unidirectional design allows forward conduction (VF = 3.5 V at 25 A), making it suitable for DC rail protection where polarity is fixed.
What does the "M3" suffix signify in SMAJ5.0A-M3/61?
The "M3" suffix denotes halogen-free, RoHS-compliant construction meeting IPC-1752A material declarations, with matte tin-plated leads qualified to JESD 201 Class 2 whisker resistance. It is commercial-grade (non-automotive), distinguishing it from HE3/HM3 variants which add AEC-Q101 qualification.
Can SMAJ5.0A-M3/61 be used in place of SMAJ5.0A-E3/61 without layout changes?
Yes - SMAJ5.0A-M3/61 and SMAJ5.0A-E3/61 share identical SMA (DO-214AC) package dimensions, pinout, solder pad layout, and electrical specifications. The only differences are material composition (halogen-free vs. standard RoHS) and qualification scope; no PCB redesign or assembly process adjustment is required for substitution.
What is the thermal resistance and maximum junction temperature of SMAJ5.0A-M3/61?
SMAJ5.0A-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" copper pads, and a maximum junction temperature (TJ) rating of +150 °C. These values enable operation in ambient temperatures up to +85 °C at full power dissipation, provided board-level thermal management meets minimum pad area requirements.
SMAJ5.0A-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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 43.5A
- 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)
SMAJ5.0A-M3/61 FAQ
1.How can I place an order for SMAJ5.0A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ5.0A-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 SMAJ5.0A-M3/61 reliable?
The price and inventory of SMAJ5.0A-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 SMAJ5.0A-M3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ5.0A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ5.0A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ5.0A-M3/61?
SMAJ5.0A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ5.0A-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 SMAJ5.0A-M3/61?
For technical support, including SMAJ5.0A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ5.0A-M3/61 requirements.
6.How does Aetrix verify that SMAJ5.0A-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ5.0A-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 SMAJ5.0A-M3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ5.0A-M3/61?
All SMAJ5.0A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ5.0A-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 SMAJ5.0A-M3/61 part is unused and in its original packaging.
Return procedure for SMAJ5.0A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ5.0A-M3/61 Tags
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