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Vishay General Semiconductor - Diodes Division SMAJ5.0AHE3_A/H
- Part No.:
- SMAJ5.0AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ5.0AHE3_A/H.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,231
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Product details
Overview
SMAJ5.0AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping ESD and surge transients on 5.0 V DC power rails and signal lines. It features a 6.40 V minimum breakdown voltage (VBR), 9.2 V maximum clamping voltage (VC) at 43.5 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 μs waveform - optimized for automotive-grade protection of microcontrollers, sensors, and I/O interfaces.
For engineers reviewing the SMAJ5.0AHE3_A/H datasheet, SMAJ5.0AHE3_A/H pinout, SMAJ5.0AHE3_A/H application, or SMAJ5.0AHE3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, 800 μA maximum reverse leakage (ID) at 5.0 V stand-off voltage (VWM), low thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, entering avalanche conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5% typical), fast response time (<1 ps), and low incremental surge resistance - critical for suppressing sub-microsecond ESD events per IEC 61000-4-2.
The SMAJ5.0AHE3_A/H is rated for -55 °C to +150 °C operating junction temperature, supports 40 A non-repetitive forward surge current (IFSM), and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak - confirming suitability for high-reliability automotive and industrial environments where thermal cycling and long-term stability are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins; matches standard 5 V logic and supply rails. |
| VBR (min/max) | 6.40 V / 7.07 V at 10 mA - Ensures reliable turn-on above normal operating voltage while avoiding false triggering. |
| VC @ IPPM | 9.2 V at 43.5 A - Limits transient voltage seen by downstream ICs to safe levels during 400 W surges. |
| IPPM | 43.5 A - Peak surge current capability with 10/1000 μs waveform; defines protection margin against ISO 7637-2 Pulse 1/2/5a. |
| PPPM | 400 W - Peak pulse power rating; enables robust suppression of inductive switching spikes and lightning-induced transients. |
| ID @ VWM | 800 μA - Low leakage ensures minimal standby power loss and avoids interference with high-impedance sensor inputs. |
| TJ max | +150 °C - Junction temperature rating supports under-hood automotive use and high-power density PCB layouts. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line (e.g., 5 V rail); conducts surge current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Connected to system ground; completes clamping path and establishes reference for VBR and VC thresholds. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring zero-failure reliability. |
| Glass passivated junction | Ensures consistent VBR performance across temperature and lifetime, minimizing drift in harsh thermal environments. |
| 400 W peak pulse power (10/1000 μs) | Provides headroom to absorb multiple high-energy transients without degradation, supporting >100,000 surge cycles. |
| MSL Level 1 moisture sensitivity | Enables direct placement without baking; compatible with standard SMT reflow profiles up to 260 °C peak. |
| RoHS-compliant & halogen-free option available | Meets global environmental compliance requirements (IEC 61249-2-21) for automotive and industrial OEMs. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V supply lines feeding engine control unit (ECU) microcontrollers from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 5 V rail and chassis ground to limit transients to ≤9.2 V. Use Value: Prevents latch-up or permanent damage to 5 V tolerant MCUs during ISO 7637-2 Pulse 5a (load dump) events up to 60 V/100 ms. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog input modules. IC Role / Device Role / Timing Role: Parallel-connected TVS on 4–20 mA loop or 0–10 V output line to clamp induced surges before reaching ADC front-end. Use Value: Maintains signal integrity by limiting transient overvoltage to <9.2 V, preserving 12-bit+ measurement accuracy under IEC 61000-4-4 EFT exposure. |
| Consumer USB Port ESD Protection | Telecom Base Station DC Bias Line Protection |
Use Scenario: Shielding VBUS and D+/D- lines in USB 2.0 ports of smart home hubs against human-body-model (HBM) ESD. IC Role / Device Role / Timing Role: Discrete TVS array element providing low-capacitance clamping on 5 V power and data lines. Use Value: Achieves >15 kV contact ESD immunity (IEC 61000-4-2) with <1 ps response, preventing data corruption or port controller reset. | Use Scenario: Protecting bias feed lines powering RF amplifiers in 4G/5G remote radio heads exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Standalone TVS on +5 V or +12 V DC bias rail upstream of GaN amplifier stage. Use Value: Clamps induced surges to ≤9.2 V within nanoseconds, avoiding gate oxide breakdown in sensitive RF power stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A-E3/61 | Same electrical specs and SMA package; RoHS-compliant commercial grade (non-AEC-Q101). | Lacks automotive qualification; suitable for consumer/industrial designs not requiring AEC-Q101 validation. | Select when cost sensitivity outweighs automotive qualification requirements and full lifecycle traceability is not mandated. |
| SMBJ5.0AHE3_A/H | Higher 600 W PPPM, same VWM/VC; SMB (DO-214AA) package with larger thermal mass and higher IPPM (64.5 A). | Better suited for higher-energy transients (e.g., ISO 16750-2); requires larger PCB footprint (4.58 mm × 3.94 mm vs. SMA's 4.50 mm × 2.79 mm). | Choose when surge energy exceeds 400 W margin or board layout allows SMB footprint for enhanced thermal derating. |
Compared with SMAJ5.0A-E3/61, the SMAJ5.0AHE3_A/H adds AEC-Q101 qualification and tighter process controls for automotive use; versus SMBJ5.0AHE3_A/H, it trades peak power for smaller size and lower thermal resistance - enabling compact, high-density 5 V rail protection where space is constrained.
Availability
SMAJ5.0AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and consumer USB interface protection requiring stable component supply, full traceability, and AEC-Q101 compliance.
Supply support for SMAJ5.0AHE3_A/H 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-speed, high-energy transient suppression in automotive, industrial, and telecom infrastructure - delivering consistent clamping performance across wide temperature ranges and extended service life.
FAQ
What is the clamping voltage of SMAJ5.0AHE3_A/H at its rated peak pulse current?
The SMAJ5.0AHE3_A/H has a maximum clamping voltage (VC) of 9.2 V at 43.5 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The low VC ensures compatibility with 5 V logic families and prevents overstress of downstream components such as microcontrollers or level translators in the SMAJ5.0AHE3_A/H application circuit.
Is SMAJ5.0AHE3_A/H qualified for automotive applications?
Yes, SMAJ5.0AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation in datasheet 88390. This qualification validates its reliability under automotive temperature cycling, humidity, mechanical shock, and long-term operational stress. Engineers specifying SMAJ5.0AHE3_A/H for engine control, body electronics, or ADAS subsystems can rely on its certified performance - unlike non-HE3 variants such as SMAJ5.0A-E3/61, which lack this automotive validation.
What is the standoff voltage rating for SMAJ5.0AHE3_A/H?
The standoff voltage (VWM) for SMAJ5.0AHE3_A/H is 5.0 V, meaning it remains in high-impedance blocking mode for reverse voltages up to this level during normal operation. This matches standard 5 V supply rails and digital I/O interfaces, ensuring no leakage-related interference or power loss. At VWM, the device exhibits ≤800 μA reverse leakage current - a design-critical parameter for battery-powered or high-impedance sensor circuits using SMAJ5.0AHE3_A/H.
How does the SMAJ5.0AHE3_A/H package compare to SMBJ-series alternatives?
The SMAJ5.0AHE3_A/H uses the SMA (DO-214AC) package measuring 4.50 mm × 2.79 mm, whereas SMBJ-series devices use the larger SMB (DO-214AA) package (4.58 mm × 3.94 mm). This makes SMAJ5.0AHE3_A/H more suitable for space-constrained layouts, though with lower peak pulse power (400 W vs. 600 W for SMBJ5.0AHE3_A/H). Both share identical VWM, VBR, and VC specs, but thermal resistance differs: SMAJ5.0AHE3_A/H has RθJA = 120 °C/W, enabling efficient heat dissipation in dense PCB assemblies where SMAJ5.0AHE3_A/H is deployed.
What is the maximum operating temperature for SMAJ5.0AHE3_A/H?
The SMAJ5.0AHE3_A/H has a maximum junction temperature (TJ) rating of +150 °C, validated per AEC-Q101 stress testing. This allows reliable operation in under-hood automotive environments, industrial motor drives, and telecom base stations where ambient temperatures exceed 105 °C. The device's RθJA of 120 °C/W and RθJL of 30 °C/W enable accurate thermal modeling - critical when designing sustained surge duty cycles or estimating lifetime in high-TA applications involving SMAJ5.0AHE3_A/H.
SMAJ5.0AHE3_A/H 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMAJ5.0AHE3_A/H FAQ
1.How can I place an order for SMAJ5.0AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ5.0AHE3_A/H 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 SMAJ5.0AHE3_A/H reliable?
The price and inventory of SMAJ5.0AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ5.0AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMAJ5.0AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ5.0AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ5.0AHE3_A/H?
SMAJ5.0AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ5.0AHE3_A/H 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 SMAJ5.0AHE3_A/H?
For technical support, including SMAJ5.0AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ5.0AHE3_A/H requirements.
6.How does Aetrix verify that SMAJ5.0AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMAJ5.0AHE3_A/H 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 SMAJ5.0AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMAJ5.0AHE3_A/H?
All SMAJ5.0AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ5.0AHE3_A/H, 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 SMAJ5.0AHE3_A/H part is unused and in its original packaging.
Return procedure for SMAJ5.0AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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