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Vishay General Semiconductor - Diodes Division SMAJ5.0AHE3/61
- Part No.:
- SMAJ5.0AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ5.0AHE3/61.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,669
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Product details
Overview
SMAJ5.0AHE3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, 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), 43.5 V maximum clamping voltage (VC) at 4.9 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMAJ5.0AHE3/61 datasheet, SMAJ5.0AHE3/61 pinout, SMAJ5.0AHE3/61 application, or SMAJ5.0AHE3/61 equivalent, key selection criteria include clamping performance under 400 W surge, unidirectional polarity with cathode band marking, RoHS-compliant matte tin-plated leads, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse-biased voltage exceeds VBR (6.40–7.07 V), it avalanches to divert transient energy away from downstream ICs or MOSFETs. Its low incremental surge resistance and fast response time (<1 ns) ensure effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The device is rated for 400 W peak pulse power (10/1000 μs waveform) up to 78 V, derating to 300 W above that threshold. Thermal resistance is 120 °C/W junction-to-ambient (RθJA) and 30 °C/W junction-to-lead (RθJL), requiring appropriate PCB copper area for sustained power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR (min/max) | 6.40 V / 7.07 V at 10 mA - Breakdown onset range; ensures reliable triggering without premature conduction. |
| VC @ IPPM | 43.5 V at 4.9 A - Clamped voltage during 400 W surge; determines maximum stress on protected circuitry. |
| PPPM | 400 W (10/1000 μs) - Peak surge energy handling capacity; validated per ANSI/IEEE C62.35. |
| ID @ VWM | 800 μA - Reverse leakage at stand-off voltage; low enough to avoid power loss in battery-powered systems. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronics, including temperature cycling and HTRB. |
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. Polarity marked by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to lower-potential side of protected line; enables forward conduction only during fault conditions. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to higher-potential side (e.g., VCC rail); avalanche conduction initiates here during overvoltage events. |
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 without derating. |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics where reliability under thermal cycling and humidity is critical. |
| Glass passivated chip junction | Improves long-term stability and moisture resistance versus epoxy-passivated alternatives. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning; eliminates moisture-related popcorning risk. |
| Low profile SMA package | 0.208" × 0.157" footprint fits high-density layouts; compatible with automated pick-and-place equipment. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V CAN transceiver power input against load dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VCC and GND, clamping surges before they reach the transceiver's internal LDO. Use Value: Limits voltage to ≤43.5 V during 400 W transients, preventing latch-up or permanent damage to ISO 11898-compliant receivers. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop drivers) in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS mounted across output terminals to absorb induced surges from nearby motor contactors or solenoid switching. Use Value: Sub-1 ns response ensures clamping occurs before sensitive op-amps or DACs exceed absolute maximum ratings. |
| Consumer USB Port ESD Protection | Telecom DC Power Input Protection |
Use Scenario: Secondary-level protection on 5 V USB VBUS line after primary common-mode choke filtering. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing residual ESD (IEC 61000-4-2 ±15 kV contact) that bypasses upstream filters. Use Value: 800 μA leakage at 5.0 V avoids loading USB suspend current budgets while maintaining fast clamping. |
Use Scenario: Front-end surge suppression on -48 V telecom rectifier outputs feeding base station control boards. IC Role / Device Role / Timing Role: Unidirectional TVS configured with cathode to -48 V rail and anode to GND to clamp negative-going transients. Use Value: 43.5 V clamping voltage referenced to GND ensures downstream DC/DC converters remain within safe input limits. |
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 AEC-Q101 qualification; differs only in packaging suffix (E3 vs HE3) and RoHS compliance documentation level. | No functional difference; E3 is commercial-grade RoHS-compliant, while HE3 explicitly denotes AEC-Q101 qualification in ordering code. | Select SMAJ5.0AHE3/61 when automotive qualification traceability is required; otherwise SMAJ5.0A-E3/61 suffices for industrial use. |
| SMBJ5.0AHE3/61 | Same VWM/VBR/VC specs but in larger SMB (DO-214AA) package; 600 W PPPM rating (vs 400 W) due to improved thermal mass. | Better suited for higher-energy surges or elevated ambient temperatures where RθJA = 85 °C/W improves thermal margin. | Choose SMBJ5.0AHE3/61 if layout allows larger footprint and system-level surge testing exceeds 400 W capability. |
Compared with SMAJ5.0A-E3/61, the HE3 suffix provides explicit AEC-Q101 certification evidence, while SMBJ5.0AHE3/61 trades compactness for higher surge endurance-making SMAJ5.0AHE3/61 optimal for space-constrained automotive modules needing verified qualification.
Availability
SMAJ5.0AHE3/61 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom power supply hardening requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMAJ5.0AHE3/61 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 and application-specific validation.
The SMAJ series was developed for high-reliability transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-leakage glass passivation, and standardized SMT packaging for automated manufacturing.
FAQ
What is the clamping voltage of SMAJ5.0AHE3/61 at its rated peak pulse current?
The SMAJ5.0AHE3/61 has a maximum clamping voltage (VC) of 43.5 V at its peak pulse current (IPPM) of 4.9 A, measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 400 W transient event and is critical for ensuring downstream components remain within their absolute maximum ratings. The SMAJ5.0AHE3/61 maintains this clamping performance across its qualified operating temperature range.
Is SMAJ5.0AHE3/61 suitable for automotive applications?
Yes, SMAJ5.0AHE3/61 is AEC-Q101 qualified and specifically intended for automotive use, including engine control units, body electronics, and infotainment power supplies. Its construction includes glass passivated junctions, MSL Level 1 moisture sensitivity, and guaranteed operation from –55 °C to +150 °C. The HE3 suffix explicitly denotes AEC-Q101 qualification in the ordering code, making SMAJ5.0AHE3/61 appropriate for safety-critical automotive designs requiring certified components.
How does the SMAJ5.0AHE3/61 differ from the SMAJ5.0A-E3/61?
The SMAJ5.0AHE3/61 and SMAJ5.0A-E3/61 share identical electrical specifications, package, and RoHS compliance-but differ in qualification documentation: HE3 confirms AEC-Q101 qualification is built into the part number, whereas E3 denotes commercial-grade RoHS compliance without explicit automotive qualification linkage. Both meet JESD 201 Class 2 whisker resistance and have matte tin-plated leads. For automotive BOMs requiring auditable qualification, SMAJ5.0AHE3/61 is the preferred choice.
What is the recommended PCB pad layout for SMAJ5.0AHE3/61 to achieve full 400 W rating?
To achieve the full 400 W peak pulse power rating, SMAJ5.0AHE3/61 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Smaller pads reduce thermal dissipation and cause derating of pulse power capability. The SMA (DO-214AC) package's thermal resistance (RθJA = 120 °C/W) assumes this layout; reducing pad size increases junction temperature rise during surge events and may compromise clamping consistency.
Does SMAJ5.0AHE3/61 support bidirectional transient suppression?
No, SMAJ5.0AHE3/61 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. It conducts only in reverse bias above VBR and blocks forward current up to 3.5 V at 25 A. For bidirectional protection (e.g., AC signal lines or data buses), the SMAJ5.0CA variant must be used instead. Using SMAJ5.0AHE3/61 in bidirectional configurations risks forward conduction failure or inadequate clamping during negative transients.
SMAJ5.0AHE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMAJ5.0AHE3/61 FAQ
1.How can I place an order for SMAJ5.0AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ5.0AHE3/61 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 SMAJ5.0AHE3/61 reliable?
The price and inventory of SMAJ5.0AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ5.0AHE3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ5.0AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ5.0AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ5.0AHE3/61?
SMAJ5.0AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ5.0AHE3/61 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 SMAJ5.0AHE3/61?
For technical support, including SMAJ5.0AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ5.0AHE3/61 requirements.
6.How does Aetrix verify that SMAJ5.0AHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ5.0AHE3/61 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 SMAJ5.0AHE3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ5.0AHE3/61?
All SMAJ5.0AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ5.0AHE3/61, 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 SMAJ5.0AHE3/61 part is unused and in its original packaging.
Return procedure for SMAJ5.0AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ5.0AHE3/61 Tags
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