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Vishay General Semiconductor - Diodes Division SMAJ5.0A-E3/61
- Part No.:
- SMAJ5.0A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ5.0A-E3/61.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMAJ5.0A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of sensitive ICs, MOSFETs, 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 IPPM - deployed in consumer, industrial, and automotive electronics against inductive switching and ESD events.
For engineers reviewing the SMAJ5.0A-E3/61 datasheet, SMAJ5.0A-E3/61 pinout, SMAJ5.0A-E3/61 application, or SMAJ5.0A-E3/61 equivalent, key selection criteria include its unidirectional polarity, SMA (DO-214AC) package compatibility with automated placement, AEC-Q101 qualification option (HE3 suffix), 800 μA max reverse leakage at VWM, and thermal resistance (RθJA = 120 °C/W) under standard PCB pad layout.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, conducting only when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%), low incremental surge resistance, and fast response time (<1 ns) to sub-microsecond transients.
The SMAJ5.0A-E3/61 is rated for non-repetitive peak pulse current up to 43.5 A (10/1000 μs), derated above TA = 25 °C per Fig. 2, and supports continuous power dissipation of 3.3 W on infinite heatsink at 50 °C. Its cathode band marking identifies polarity, and it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 5.0 V - Maximum DC or continuous reverse operating voltage before conduction begins |
| VBR (Breakdown Voltage) | 6.40–7.07 V at 10 mA - Guaranteed conduction onset range under specified test current |
| VC (Clamping Voltage) | ≤9.2 V at IPPM = 43.5 A - Peak voltage seen by protected circuit during 400 W transient |
| PPPM (Peak Pulse Power) | 400 W (10/1000 μs) - Surge energy handling capacity without failure |
| ID (Reverse Leakage) | ≤800 μA at VWM = 5.0 V - Low standby current minimizes power loss in always-on protection |
| Package | SMA (DO-214AC) - Industry-standard 2-pin surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal design |
| TJ max. | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant. Cathode identified by a single band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or common return path in unidirectional clamp configuration |
| Cathode | High-side connection point | Connected to protected line (e.g., I/O, power rail); band-marked end defines polarity |
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 5 V rails |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes stress on downstream 5 V logic devices during transient events |
| Glass passivated junction | Ensures long-term VBR stability and reduced parameter drift across temperature and life cycles |
| RoHS-compliant, commercial-grade (E3 suffix) | Meets global environmental compliance without halogen restrictions; suitable for high-volume SMT assembly |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free reflow profiles without pre-baking or special handling |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 5 V CAN transceiver power and data lines from load dump and inductive kickback in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VCC and GND, and across CANH/CANL differential pair. Use Value: Clamps transients to ≤9.2 V, preserving integrity of 5 V tolerant transceivers and preventing latch-up in microcontrollers. |
Use Scenario: Safeguarding 5 V digital input channels on programmable logic controllers exposed to 24 V field wiring noise and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted at connector entry point, shunting surge energy before signal conditioning circuitry. Use Value: Withstands 43.5 A peak pulses while maintaining <800 μA leakage, ensuring no false triggering during normal 5 V logic operation. |
| Consumer USB Power Delivery Interface | Telecom Base Station Sensor Interface |
Use Scenario: Overvoltage protection on 5 V VBUS line of USB-C receptacles subjected to hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: Primary front-end TVS in series with polyfuse, clamping fast transients before USB controller ICs. Use Value: Sub-1 ns response time and 9.2 V clamping prevent damage to USB PD controllers rated for 5.5 V absolute maximum. |
Use Scenario: Shielding analog sensor inputs (e.g., temperature, humidity) connected to 5 V ADC front-ends in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Low-leakage TVS placed directly at connector, guarding against lightning-induced surges on long sensor cables. Use Value: 6.4–7.07 V VBR range ensures reliable activation above 5 V nominal while avoiding false triggering during supply ripple. |
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-M3/61 | Halogen-free, RoHS-compliant variant; identical electrical specs and package | No functional difference; selected where halogen-free BOM compliance is mandated | Choose SMAJ5.0A-M3/61 when regulatory requirements prohibit brominated flame retardants in molding compound |
| SMAJ5.0AHE3_A | AEC-Q101 qualified version; same VWM/VBR/VC but validated for automotive temperature cycling and reliability testing | Required for under-hood or safety-critical automotive ECUs; not necessary for commercial-grade designs | Select SMAJ5.0AHE3_A only if automotive qualification (e.g., ISO/TS 16949 production) is contractually required |
Compared with SMAJ5.0A-M3/61 and SMAJ5.0AHE3_A, the SMAJ5.0A-E3/61 provides baseline commercial-grade TVS performance with RoHS compliance and full traceability, making it optimal for cost-sensitive industrial and consumer applications where halogen-free or automotive qualification are not mandated.
Availability
SMAJ5.0A-E3/61 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and consumer USB interface designs requiring stable component supply, consistent parametric performance, and full RoHS compliance.
Supply support for SMAJ5.0A-E3/61 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, MOSFETs, and optoelectronics with emphasis on reliability, precision, and high-volume manufacturability.
The SMAJ series is engineered for board-level transient suppression in space-constrained applications, targeting robust protection of 3.3 V to 188 V systems against ESD, EFT, and surge per IEC 61000-4 standards.
FAQ
What is the clamping voltage of the SMAJ5.0A-E3/61 at its rated peak pulse current?
The SMAJ5.0A-E3/61 has a maximum clamping voltage (VC) of 9.2 V when subjected to its peak pulse current (IPPM) of 43.5 A under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and guarantees that protected circuitry will not experience more than 9.2 V during such transient events - critical for safeguarding 5 V logic interfaces. The SMAJ5.0A-E3/61 maintains this clamping performance across its specified operating temperature range.
Is the SMAJ5.0A-E3/61 suitable for automotive applications?
The SMAJ5.0A-E3/61 itself is a commercial-grade part and not AEC-Q101 qualified; however, Vishay offers the functionally identical SMAJ5.0AHE3_A variant with full automotive qualification. For non-safety-critical automotive subsystems (e.g., infotainment USB ports), the SMAJ5.0A-E3/61 may be used with system-level validation. The SMAJ5.0A-E3/61 shares the same electrical characteristics, package, and thermal behavior as its HE3 counterpart - only qualification testing differs.
What is the meaning of the "-E3/61" suffix in SMAJ5.0A-E3/61?
The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with standard tin plating and brominated flame-retardant molding compound. The "/61" indicates packaging in 7-inch diameter plastic tape and reel, with a base quantity of 1800 units per reel - optimized for high-speed pick-and-place assembly. This ordering code ensures traceability, moisture sensitivity level (MSL) 1 compliance, and compatibility with standard SMT production lines. The SMAJ5.0A-E3/61 is fully compatible with lead-free reflow profiles up to 260 °C peak.
How does the SMAJ5.0A-E3/61 compare to SMAJ5.0CA in bidirectional use?
The SMAJ5.0A-E3/61 is unidirectional and intended for DC-biased lines like power rails or single-ended signals referenced to ground; SMAJ5.0CA is bidirectional and suited for AC-coupled or differential lines (e.g., RS-485, CAN) where polarity reversal occurs. Their VWM (5.0 V), VBR (6.40–7.25 V), and VC (9.2 V) are closely matched, but SMAJ5.0CA exhibits symmetrical clamping in both directions. The SMAJ5.0A-E3/61 cannot replace SMAJ5.0CA in true bidirectional applications without circuit redesign due to inherent polarity dependence.
What PCB layout guidance applies to the SMAJ5.0A-E3/61 for optimal thermal and surge performance?
Vishay specifies mounting the SMAJ5.0A-E3/61 on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 400 W pulse power and 120 °C/W junction-to-ambient thermal resistance. Minimizing trace length between the SMAJ5.0A-E3/61 and protected node reduces inductance, preserving clamping speed. Avoid thermal relief on pads unless thermal derating is acceptable; internal layer copper pours connected via multiple vias further improve heat dissipation. The SMAJ5.0A-E3/61's DO-214AC footprint is standardized and supported by all major CAD libraries.
SMAJ5.0A-E3/61 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-E3/61 FAQ
1.How can I place an order for SMAJ5.0A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ5.0A-E3/61 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-E3/61 reliable?
The price and inventory of SMAJ5.0A-E3/61 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-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ5.0A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ5.0A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ5.0A-E3/61?
SMAJ5.0A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ5.0A-E3/61 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-E3/61?
For technical support, including SMAJ5.0A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ5.0A-E3/61 requirements.
6.How does Aetrix verify that SMAJ5.0A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ5.0A-E3/61 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-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ5.0A-E3/61?
All SMAJ5.0A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ5.0A-E3/61, 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-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ5.0A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ5.0A-E3/61 Tags
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