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Vishay General Semiconductor - Diodes Division SMA5J40HE3/61
- Part No.:
- SMA5J40HE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J40HE3/61.pdf
- Description:
- TVS DIODE 40VWM 71.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,163
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Product details
Overview
SMA5J40HE3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on power and signal lines. It features a 40 V standoff voltage (VWM), 44.4–49.1 V breakdown voltage (VBR), 64.5 V clamping voltage (VC) at 7.8 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J40HE3/61 datasheet, SMA5J40HE3/61 pinout, SMA5J40HE3/61 application, or SMA5J40HE3/61 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below 40 V reverse standoff voltage and rapidly transitions to low-impedance conduction above its 44.4–49.1 V breakdown threshold. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at VWM) and fast response time to transients.
Designed for single-polarity surge suppression, it handles 40 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits 25 °C/W junction-to-lead thermal resistance. The device is rated for operation from –55 °C to +150 °C and meets J-STD-020 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 44.4 V / 49.1 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold tolerance |
| VC @ IPPM | 64.5 V - Clamped voltage during 500 W surge event; limits downstream voltage stress |
| PPPM | 500 W - Peak pulse power handling capability with 10/1000 µs waveform |
| IPPM | 7.8 A - Peak pulse current corresponding to 500 W clamping condition |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments |
| Leakage ID | <1.0 µA - Low reverse leakage at VWM; minimizes standby power loss in battery-powered systems |
Pinout & Package
DO-214AC (SMA) surface-mount package with molded epoxy body, matte tin-plated leads, and cathode band marking. Complies with UL 94 V-0 flammability rating and J-STD-002/JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of protected line; conducts during positive surges when cathode is biased higher |
| Cathode (banded end) | Reverse-biased terminal | Connected to higher-potential rail (e.g., VIN); initiates clamping when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress requirements |
| Glass passivated junction | Ensures stable electrical parameters over time and humidity exposure; improves long-term leakage stability |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning or dry-pack requirements |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients; contributes to 64.5 V clamping at 7.8 A |
| Automated placement compatible | DO-214AC footprint supports high-speed pick-and-place; 0.064 g unit weight aids feeder consistency |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp positive surges up to ISO 7637-2 Pulse 5a. Use Value: Withstands 500 W pulses and clamps to ≤64.5 V, preventing damage to downstream PMICs and microcontrollers. | Use Scenario: Safeguarding programmable logic controllers (PLCs) and motor drives from inductive switching spikes on 24 V DC inputs. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing repetitive 10/1000 µs transients induced by relay/coil de-energization. Use Value: 40 V VWM allows reliable operation across nominal 24 V ±20 % input range while maintaining <1 µA leakage. |
| Automotive Sensor Interface Protection | Consumer Power Adapter Output |
Use Scenario: Shielding CAN/LIN transceivers and analog sensor front-ends (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Localized TVS on sensor supply line, positioned close to connector to intercept fast-rising transients before reaching IC pins. Use Value: Fast response time and low VC ensure sensor ICs see sub-65 V stress even during 30 kV ESD contact discharge. | Use Scenario: Secondary-side overvoltage protection in wall adapters and USB PD chargers delivering regulated 5–20 V outputs. IC Role / Device Role / Timing Role: Final-stage TVS on output rail to absorb fault-induced surges from short-circuit recovery or feedback loop instability. Use Value: AEC-Q101 qualification and RoHS compliance support global safety certifications (UL/IEC 62368-1) for consumer end equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J40A-E3/61 | Commercial-grade version; not AEC-Q101 qualified; same VWM, VBR, VC, and PPPM | Approved for industrial/commercial use only; excluded from automotive production BOMs requiring AEC qualification | Select when cost sensitivity outweighs automotive qualification requirements and ambient temperature stays ≤125 °C |
| SMC5J40A | Larger DO-214AB (SMC) package; identical electrical specs but higher thermal mass and 1000 W PPPM rating | Used where board space permits larger footprint and higher surge margin is required (e.g., main power entry) | Choose for enhanced robustness in high-energy surge environments; requires PCB pad redesign |
Compared with SMA5J40A-E3/61 and SMC5J40A, the SMA5J40HE3/61 uniquely combines AEC-Q101 qualification, DO-214AC compactness, and 500 W surge capability - making it optimal for space-constrained automotive modules needing certified reliability without layout change.
Availability
SMA5J40HE3/61 is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and sensor interface protection requiring stable component supply, AEC-Q101 compliance, and RoHS-conforming SMT assembly.
Supply support for SMA5J40HE3/61 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 high-reliability, automotive-qualified components.
The SMA5J series was developed specifically for high-power-density transient suppression in automotive and industrial applications where AEC-Q101 compliance, low-profile packaging, and consistent clamping performance are mandatory design requirements.
FAQ
What is the polarity configuration of the SMA5J40HE3/61?
The SMA5J40HE3/61 is a unidirectional TVS diode, meaning it conducts only in the reverse direction when voltage exceeds its breakdown threshold. The cathode is marked by a band on the DO-214AC package body. This configuration makes SMA5J40HE3/61 suitable for protecting positive-rail circuits where only positive-going transients require suppression.
Does the SMA5J40HE3/61 meet automotive qualification standards?
Yes, the SMA5J40HE3/61 is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3". This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, ensuring suitability for automotive electronic control units, body electronics, and powertrain subsystems where SMA5J40HE3/61 is deployed.
What is the maximum clamping voltage of the SMA5J40HE3/61 under surge conditions?
The SMA5J40HE3/61 has a maximum clamping voltage (VC) of 64.5 V at its rated peak pulse current of 7.8 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events.
How does the SMA5J40HE3/61 differ from the SMA5J40A-E3/61?
The SMA5J40HE3/61 differs from the SMA5J40A-E3/61 solely in qualification level: "HE3" denotes AEC-Q101 qualification and JESD201 Class 2 whisker resistance, while "E3" indicates commercial-grade qualification only. All electrical parameters - including VWM, VBR, VC, and PPPM - are identical between SMA5J40HE3/61 and SMA5J40A-E3/61.
What PCB pad layout is recommended for optimal thermal performance of the SMA5J40HE3/61?
Vishay specifies mounting the SMA5J40HE3/61 on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 500 W pulse power dissipation. Using smaller pads reduces thermal derating; the device's RθJA is 80 °C/W under this layout, and RθJL is 25 °C/W - both critical for sustained surge handling in SMA5J40HE3/61 designs.
SMA5J40HE3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 71.4V
- Current - Peak Pulse (10/1000µs):
- 7A
- Power - Peak Pulse:
- 500W
- 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)
SMA5J40HE3/61 FAQ
1.How can I place an order for SMA5J40HE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J40HE3/61 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 SMA5J40HE3/61 reliable?
The price and inventory of SMA5J40HE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J40HE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J40HE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J40HE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J40HE3/61?
SMA5J40HE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J40HE3/61 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 SMA5J40HE3/61?
For technical support, including SMA5J40HE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J40HE3/61 requirements.
6.How does Aetrix verify that SMA5J40HE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J40HE3/61 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 SMA5J40HE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J40HE3/61?
All SMA5J40HE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J40HE3/61, 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 SMA5J40HE3/61 part is unused and in its original packaging.
Return procedure for SMA5J40HE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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