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Vishay General Semiconductor - Diodes Division SMA5J33CAHE3/61
- Part No.:
- SMA5J33CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J33CAHE3/61.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,731
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Product details
Overview
SMA5J33CAHE3/61 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 33 V standoff voltage (VWM), 36.7–40.6 V breakdown voltage (VBR), 500 W peak pulse power (10/1000 μs), clamping voltage of 53.3 V at 9.4 A IPPM, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMA5J33CAHE3/61 datasheet, SMA5J33CAHE3/61 pinout, SMA5J33CAHE3/61 application, or SMA5J33CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, RoHS-compliant + AEC-Q101 qualified construction, 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, responding within picoseconds to transients induced by inductive switching or ESD. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 μA at VWM), while the bidirectional architecture eliminates polarity concerns in AC-coupled or differential signal paths.
The device delivers 500 W peak pulse power under standardized 10/1000 μs waveform conditions, with thermal resistance RθJA = 80 °C/W and RθJL = 25 °C/W. It is rated for -55 °C to +150 °C operating junction temperature and meets MSL Level 1 per J-STD-020 at 260 °C peak reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 33 V - Maximum continuous reverse voltage before conduction begins; defines safe operating window for protected circuit. |
| VBR (Breakdown Voltage) | 36.7–40.6 V at 1 mA - Confirmed minimum/maximum threshold where avalanche conduction initiates reliably. |
| VC (Clamping Voltage) | 53.3 V at 9.4 A IPPM - Peak voltage seen across device during 10/1000 μs surge; determines maximum stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 500 W - Energy-handling capacity under standard surge waveform; enables robust protection against IEC 61000-4-5 Level 3/4 surges. |
| ID (Reverse Leakage) | <1.0 μA at VWM - Negligible standby current; avoids loading sensitive analog or low-power sensor circuits. |
| TJ max. | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
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. No polarity marking - bidirectional operation confirmed per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | Either end serves as anode or cathode depending on transient polarity; no orientation required during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR over lifetime and improved humidity resistance vs. epoxy-passivated alternatives. |
| MSL Level 1 rating | Enables single-pass reflow at 260 °C peak without pre-baking; supports high-yield automated assembly. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving system immunity. |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive powertrain, body electronics, and ADAS modules requiring extended temperature and life-cycle reliability. |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and transportation equipment. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional shunt clamp absorbing up to 500 W surge energy while limiting line voltage to ≤53.3 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V automotive MCUs without adding series impedance or signal delay. |
Use Scenario: Safeguarding analog outputs (4–20 mA) and digital I²C/SPI lines in factory-floor pressure/temperature sensors exposed to motor drive noise. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) voltage clamp placed directly at connector entry point. Use Value: Maintains signal integrity under repetitive 1 kV/500 A surge events per IEC 61000-4-5, eliminating field failures due to EFT coupling. |
| Telecom DSL Line Protection | Consumer USB Port ESD Suppression |
Use Scenario: Shielding ADSL/VDSL line drivers and receivers from lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: Primary bidirectional TVS on tip/ring lines upstream of transformer coupling. Use Value: Withstands repeated 10/1000 μs surges up to 500 W while maintaining <1.0 μA leakage at 33 V, preserving line balance and SNR. |
Use Scenario: Protecting USB 2.0 data lines (D+/D−) and VBUS against human-body-model (HBM) and IEC 61000-4-2 contact discharge. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to USB connector. Use Value: Clamps 8 kV ESD events to <53.3 V within <1 ns, preventing data corruption and PHY latch-up without degrading 480 Mbps signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J33CA-M3/61 | No AEC-Q101 qualification; halogen-free, RoHS-compliant only. | Suitable for commercial/industrial use but not automotive production. | Select when AEC-Q101 is not required and halogen-free compliance is mandated. |
| SMA6J33CAHE3/61 | 600 W PPPM rating; same VWM/VBR/VC specs; identical SMA package and AEC-Q101 qualification. | Higher surge margin for systems facing severe ISO 7637-2 pulse 5a or IEC 61000-4-5 combination wave stress. | Choose when design margin requires >500 W pulse handling without changing layout or footprint. |
Compared with SMA5J33CAHE3/61, SMA5J33CA-M3/61 omits automotive qualification but reduces cost for non-automotive use, while SMA6J33CAHE3/61 provides 20 % higher surge power headroom in the same qualified package-enabling future-proofing without PCB redesign.
Availability
SMA5J33CAHE3/61 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom line protection, and consumer port-level ESD suppression requiring stable component supply and long-term lifecycle support.
Supply support for SMA5J33CAHE3/61 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 qualification.
The SMA5JxxCA family is engineered for high-power-density transient suppression in space-constrained, high-reliability applications-including automotive ECUs, industrial PLC I/O modules, and telecom infrastructure-where bidirectional clamping and AEC-Q101 validation are mandatory.
FAQ
What is the polarity configuration of SMA5J33CAHE3/61?
The SMA5J33CAHE3/61 is a bidirectional TVS diode with no polarity marking on the SMA (DO-214AC) package. Its symmetrical avalanche structure allows it to clamp transients of either polarity equally, making it ideal for AC signal lines, differential buses like CAN or RS-485, and ungrounded power rails where polarity cannot be guaranteed during surge events. This eliminates orientation errors during automated placement.
Does SMA5J33CAHE3/61 meet automotive qualification standards?
Yes, SMA5J33CAHE3/61 is explicitly AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's 88875 datasheet (Rev. 09-Jan-2024). It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per AEC-Q101 requirements-making it suitable for under-hood and chassis-mounted automotive applications such as body control modules and ADAS sensor interfaces.
What is the clamping voltage of SMA5J33CAHE3/61 at its rated peak pulse current?
The SMA5J33CAHE3/61 clamps to a maximum of 53.3 V at its specified peak pulse current (IPPM) of 9.4 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the worst-case voltage imposed on protected circuitry during a full-rated surge event-critical for ensuring downstream 3.3 V or 5 V ICs remain within absolute maximum ratings.
Can SMA5J33CAHE3/61 be used in place of a unidirectional TVS like SMA5J33AHE3/61?
No-SMA5J33CAHE3/61 is bidirectional and lacks polarity marking, whereas SMA5J33AHE3/61 is unidirectional with a cathode band. Substituting them requires verifying circuit topology: SMA5J33CAHE3/61 is appropriate for AC-coupled or floating lines, but using it in DC-only applications with defined ground reference may result in unnecessary leakage or suboptimal clamping symmetry. Always validate with actual surge test waveforms.
What is the thermal resistance of SMA5J33CAHE3/61, and how does it affect layout?
SMA5J33CAHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W and junction-to-lead (RθJL) of 25 °C/W, measured on 0.2" × 0.2" copper pads per datasheet condition. To maintain safe operation at full 500 W surge rating, PCB layout must provide adequate copper area and thermal vias-especially in automotive or industrial environments where ambient temperatures exceed 85 °C and sustained power dissipation must be minimized.
SMA5J33CAHE3/61 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMA5J33CAHE3/61 FAQ
1.How can I place an order for SMA5J33CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J33CAHE3/61 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 SMA5J33CAHE3/61 reliable?
The price and inventory of SMA5J33CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J33CAHE3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J33CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J33CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J33CAHE3/61?
SMA5J33CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J33CAHE3/61 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 SMA5J33CAHE3/61?
For technical support, including SMA5J33CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J33CAHE3/61 requirements.
6.How does Aetrix verify that SMA5J33CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J33CAHE3/61 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 SMA5J33CAHE3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J33CAHE3/61?
All SMA5J33CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J33CAHE3/61, 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 SMA5J33CAHE3/61 part is unused and in its original packaging.
Return procedure for SMA5J33CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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