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Vishay General Semiconductor - Diodes Division SMA5J33AHE3/61
- Part No.:
- SMA5J33AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J33AHE3/61.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,289
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Product details
Overview
SMA5J33AHE3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 33 V stand-off voltage (VWM), 36.7–40.6 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 µs), 9.4 A maximum clamping current (IPPM), and clamps to ≤53.3 V at rated surge. It is AEC-Q101 qualified and used in automotive sensor line protection.
For engineers reviewing the SMA5J33AHE3/61 datasheet, SMA5J33AHE3/61 pinout, SMA5J33AHE3/61 application, or SMA5J33AHE3/61 equivalent, key selection criteria include unidirectional polarity, 53.3 V clamping voltage at 9.4 A, AEC-Q101 qualification, RoHS-compliant HE3 suffix, and SMA package thermal resistance (RθJA = 80 °C/W).
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 33 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR and fast response (<1 ns) to ESD and lightning-induced surges.
The device is rated for 40 A non-repetitive forward surge (8.3 ms half-sine) and derates linearly above 25 °C ambient per Fig. 2. Thermal performance is defined by RθJA = 80 °C/W (on 5.0 mm × 5.0 mm copper pads) and RθJL = 25 °C/W, enabling reliable operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR min/max | 36.7 V / 40.6 V at IT = 1 mA - Confirmed breakdown window ensures predictable turn-on across production lot. |
| VC @ IPPM | ≤53.3 V at 9.4 A (10/1000 µs) - Clamping voltage limits downstream IC stress during standardized surge events. |
| PPPM | 500 W - Peak pulse power handling capacity determines survivability against IEC 61000-4-5 Level 4 surges. |
| IR @ VWM | ≤1.0 µA - Ultra-low leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max | 150 °C - Maximum junction temperature enables use in under-hood automotive environments. |
| Package | SMA (DO-214AC) - Surface-mount package with 5.0 mm × 5.0 mm pad layout, MSL Level 1, 260 °C reflow compatible. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; cathode indicated by band at one end; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes clamping path during overvoltage event. |
| Cathode (banded end) | High-side connection point | Connected to protected line (e.g., 33 V rail or sensor output); reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal/humidity stress. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision vs. higher-Rsurge TVS devices. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking; supports high-yield SMT assembly. |
| RoHS-compliant HE3 suffix | Meets EU RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity requirements. |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between signal line and chassis ground to clamp transients before reaching sensitive input stages. Use Value: Clamps 53.3 V at 9.4 A while maintaining <1 µA leakage at 33 V, preserving signal fidelity and meeting AEC-Q100 stress test margins. |
Use Scenario: Safeguarding 24 V/33 V industrial control power rails against switching surges from relay coils and motor drivers. IC Role / Device Role / Timing Role: Primary overvoltage clamp mounted directly at power entry point or downstream of DC/DC converter output. Use Value: Absorbs 500 W (10/1000 µs) without degradation, enabling compliance with IEC 61000-4-5 Level 4 immunity requirements. |
| Consumer USB Port Protection | Telecom Line Interface |
Use Scenario: Secondary-level surge suppression on USB VBUS lines in portable docking stations and power banks. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary fuse and upstream of USB controller's internal ESD diodes. Use Value: Withstands 40 A 8.3 ms surge (IFSM), preventing latch-up and thermal runaway during hot-plug inrush events. |
Use Scenario: Protecting Ethernet PHY interface pins and RS-485 transceiver inputs from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to local ground, coordinated with common-mode chokes and gas discharge tubes. Use Value: Delivers <1 ns response time and 80 °C/W RθJA, enabling rapid energy diversion without thermal runaway in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J33AE3/61 | Same electrical specs, but commercial-grade (non-AEC-Q101); HE3 suffix adds automotive qualification and whisker-tested leads. | Not suitable for automotive under-hood or safety-critical modules requiring AEC-Q101 validation. | Select SMA5J33AHE3/61 when automotive qualification, extended temperature reliability, or JESD201 Class 2 whisker resistance is required. |
| SMB5J33AHE3/61 | Same VWM/VBR/VC ratings, but SMB (DO-214AA) package: 5.3 mm × 4.1 mm vs. SMA's 4.9 mm × 3.9 mm; RθJA = 65 °C/W (lower thermal resistance). | Better thermal performance but larger footprint; requires PCB layout change and may not fit space-constrained automotive modules. | Choose SMB5J33AHE3/61 only if thermal margin is insufficient with SMA layout and board area permits larger package. |
Compared with SMA5J33AE3/61 and SMB5J33AHE3/61, the SMA5J33AHE3/61 uniquely combines AEC-Q101 qualification, SMA footprint compatibility, and verified 150 °C junction operation-making it the preferred choice for space-limited automotive electronics where qualification and thermal robustness are jointly mandated.
Availability
SMA5J33AHE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial 24–33 V power systems, and telecom line protection requiring stable component supply, AEC-Q101 compliance, and high-energy surge resilience.
Supply support for SMA5J33AHE3/61 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, power density, and automotive-grade validation.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in automotive, industrial, and communications infrastructure where compact size and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the SMA5J33AHE3/61 at its rated peak pulse current?
The SMA5J33AHE3/61 clamps to a maximum of 53.3 V when subjected to its rated peak pulse current of 9.4 A under the standard 10/1000 µs waveform. This value is measured at the device terminals with specified mounting conditions (0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events.
Is the SMA5J33AHE3/61 suitable for automotive applications?
Yes, the SMA5J33AHE3/61 is AEC-Q101 qualified and carries the HE3 suffix indicating RoHS compliance plus automotive-grade reliability testing. It operates from −55 °C to +150 °C and meets JESD201 Class 2 whisker resistance, making it appropriate for engine control units, body electronics, and ADAS sensor modules.
What does the "HE3" suffix mean in SMA5J33AHE3/61?
The "HE3" suffix in SMA5J33AHE3/61 denotes a RoHS-compliant, AEC-Q101-qualified version with matte tin-plated leads that pass JESD201 Class 2 whisker testing. It distinguishes this variant from commercial-grade E3 versions and confirms suitability for automotive production environments.
How does the SMA5J33AHE3/61 differ from the bidirectional SMA5J33CAHE3/61?
The SMA5J33AHE3/61 is unidirectional (cathode-banded), intended for DC line protection where polarity is fixed. The SMA5J33CAHE3/61 is bidirectional, with symmetric clamping in both directions and no polarity marking-used in AC-coupled or differential signal paths like telecom lines or RS-485 buses.
What is the maximum leakage current of the SMA5J33AHE3/61 at its stand-off voltage?
The SMA5J33AHE3/61 exhibits a maximum reverse leakage current of 1.0 µA when biased at its 33 V stand-off voltage (VWM) and tested at 25 °C. This ultra-low leakage ensures minimal power loss and signal distortion in always-on or battery-powered systems.
SMA5J33AHE3/61 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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- Current - Peak Pulse (10/1000µs):
- 9.4A
- 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)
SMA5J33AHE3/61 FAQ
1.How can I place an order for SMA5J33AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J33AHE3/61 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 SMA5J33AHE3/61 reliable?
The price and inventory of SMA5J33AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J33AHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J33AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J33AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J33AHE3/61?
SMA5J33AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J33AHE3/61 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 SMA5J33AHE3/61?
For technical support, including SMA5J33AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J33AHE3/61 requirements.
6.How does Aetrix verify that SMA5J33AHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J33AHE3/61 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 SMA5J33AHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J33AHE3/61?
All SMA5J33AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J33AHE3/61, 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 SMA5J33AHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J33AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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