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Vishay General Semiconductor - Diodes Division SMA5J33CHE3/5A
- Part No.:
- SMA5J33CHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J33CHE3/5A.pdf
- Description:
- TVS DIODE 33VWM 59VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,639
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Product details
Overview
SMA5J33CHE3/5A from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on power and signal lines. It features a 33 V stand-off voltage (VWM), 36.7–40.6 V breakdown voltage (VBR), 500 W peak pulse power (PPPM), 9.4 A peak pulse current (IPPM), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMA5J33CHE3/5A datasheet, SMA5J33CHE3/5A pinout, SMA5J33CHE3/5A application, or SMA5J33CHE3/5A equivalent, key selection criteria include clamping voltage (VC = 53.3 V at IPPM), low incremental surge resistance, bi-directional symmetry, RoHS compliance with whisker-tested leads (JESD 201 Class 2), and MSL Level 1 moisture sensitivity.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with identical VBR min/max (36.7 V / 40.6 V), ID ≤ 1.0 μA at VWM, and VC = 53.3 V under 10/1000 μs surge. Its glass-passivated junction ensures stable leakage and fast response (< 1 ns).
Thermal performance is defined by RθJA = 80 °C/W and RθJL = 25 °C/W, with TJ operating range from –55 °C to +150 °C. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, distinguishing it from commercial-grade E3 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 36.7 V / 40.6 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold tolerance |
| VC @ IPPM | 53.3 V - Clamped voltage during 9.4 A 10/1000 μs surge; determines protected circuit's maximum overvoltage stress |
| PPPM | 500 W - Peak transient energy handling capability under standardized 10/1000 μs waveform |
| ID @ VWM | ≤ 1.0 μA - Reverse leakage at stand-off voltage; critical for low-power sensor or battery-backed circuits |
| TJ Range | –55 °C to +150 °C - Validated operating and storage temperature envelope for under-hood automotive deployment |
| Qualification | AEC-Q101 qualified - Certified for automotive electronic systems per stress-test requirements including HTOL, TCT, and HAST |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional device with no polarity marking. Molding compound meets UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between terminals; either terminal serves as anode or cathode depending on instantaneous polarity of surge |
| Case (body) | Non-electrical mechanical interface | DO-214AC outline defines thermal path to PCB copper pads (0.2" × 0.2") and limits mounting clearance |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping symmetry | Identical VBR, VC, and IPPM in both directions - eliminates need for orientation-aware layout in AC-coupled or floating lines |
| AEC-Q101 qualification (HE3) | Validated reliability for automotive powertrain, body control, and ADAS modules - includes 1000-cycle temperature cycling and 1000-hr HTOL |
| Low clamping ratio (VC/VWM) | 1.61 - Enables robust protection margin for 3.3 V, 5 V, and 24 V systems without over-clamping sensitive IC inputs |
| JESD 201 Class 2 whisker resistance | Qualified for high-reliability lead finish stability under thermal cycling - prevents filament growth in reflow-soldered automotive assemblies |
| MSL Level 1 (260 °C peak) | Unlimited floor life at ≤ 30 °C / 60 % RH - supports standard SMT assembly without baking or dry-pack handling |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and jump-start transients on 12 V/24 V vehicle power rails feeding ECUs and lighting controllers. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC/DC converters and LDOs to limit input overvoltage. Use Value: Withstands 500 W surges and maintains VC ≤ 53.3 V, preventing damage to downstream regulators rated for ≤ 60 V absolute max. |
Use Scenario: Protecting analog front-ends of pressure, temperature, and position sensors connected to long harnesses in factory automation. IC Role / Device Role / Timing Role: Bi-directional shunt clamp on differential or single-ended signal lines exposed to ESD and inductive switching noise. Use Value: Symmetric clamping ensures equal protection regardless of common-mode polarity shift; <1.0 μA leakage avoids signal offset errors in μA-level sensor outputs. |
| Telecom DC Power Input | Consumer USB Port ESD Suppression |
Use Scenario: Safeguarding PoE-powered switches and base stations against lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: First-line transient suppressor mounted at board edge before primary filtering and isolation stages. Use Value: 500 W PPPM rating and 80 °C/W RθJA enable sustained surge handling without thermal runaway when mounted on 5 mm × 5 mm copper pads. |
Use Scenario: Adding secondary-level surge immunity to USB 2.0 data lines and VBUS in portable speakers, docking stations, and smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp across D+/D− or VBUS/GND to absorb IEC 61000-4-5 surges without signal distortion. Use Value: DO-214AC footprint allows placement adjacent to USB connectors; AEC-Q101 qualification ensures longevity in consumer devices subjected to repeated hot-plug cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J33CA-E3/5A | Same VWM/VBR/VC specs, but E3 suffix indicates commercial grade (not AEC-Q101 qualified); JESD 201 Class 1A whisker test only | Lacks automotive qualification; suitable for industrial or telecom equipment where AEC-Q101 is not mandated | Select when cost sensitivity outweighs automotive reliability requirements and JEDEC whisker Class 2 is unnecessary |
| SMCJ33CAHE3 | Same 33 V bi-directional rating but in larger DO-214AB (SMC) package; higher PPPM (1500 W), lower VC (53.3 V same), RθJA = 20 °C/W | Better thermal dissipation and surge capacity; requires larger PCB area and different pad layout | Choose for higher-energy threat environments (e.g., heavy-duty vehicle alternator load dump) where DO-214AC size constraint is relaxed |
Compared with SMA5J33CHE3/5A, the E3 variant trades automotive qualification for lower cost, while the SMCJ33CAHE3 offers superior power handling at the expense of footprint size - enabling design flexibility across reliability, thermal, and space constraints.
Availability
SMA5J33CHE3/5A is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom DC power inputs, and consumer USB port protection requiring stable component supply and traceable AEC-Q101-compliant sourcing.
Supply support for SMA5J33CHE3/5A 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 delivers high-power-density TVS protection in compact surface-mount packages, engineered specifically for automotive, industrial, and telecom applications demanding AEC-Q101 qualification and robust transient immunity.
FAQ
What is the clamping voltage of the SMA5J33CHE3/5A under a 10/1000 µs surge?
The SMA5J33CHE3/5A clamps to a maximum of 53.3 V when subjected to its rated peak pulse current of 9.4 A under the standardized 10/1000 µs waveform. This VC value is measured at the device terminals with specified PCB mounting conditions (0.2" × 0.2" copper pads), and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the SMA5J33CHE3/5A unidirectional or bidirectional?
The SMA5J33CHE3/5A is a bi-directional transient voltage suppressor, as indicated by the "CA" suffix in its full family designation and confirmed by electrical characteristics applying identically in both polarities. It has no polarity marking and functions symmetrically - either terminal serves as anode or cathode depending on instantaneous surge polarity.
Does the SMA5J33CHE3/5A meet automotive qualification standards?
Yes, the SMA5J33CHE3/5A is AEC-Q101 qualified, verified per Vishay's documentation (Document Number: 88875, Revision: 24-Oct-12). The "HE3" suffix explicitly denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, making it suitable for automotive powertrain, body electronics, and ADAS applications.
What is the maximum operating temperature for the SMA5J33CHE3/5A?
The SMA5J33CHE3/5A has a maximum junction temperature (TJ max.) of +150 °C and an operating junction and storage temperature range of –55 °C to +150 °C. This rating is validated under derated power conditions above TA = 25 °C, per Figure 2 in the official datasheet.
How does the SMA5J33CHE3/5A differ from the SMA5J33A variant?
The SMA5J33CHE3/5A is bi-directional (CA suffix), whereas SMA5J33A is uni-directional (A suffix). They share identical VWM (33 V), VBR (36.7–40.6 V), and PPPM (500 W), but the uni-directional version includes a cathode band marking and specifies forward voltage (VF = 3.5 V at 25 A), which does not apply to the bi-directional SMA5J33CHE3/5A.
SMA5J33CHE3/5A 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 59V
- Current - Peak Pulse (10/1000µs):
- 8.5A
- 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)
SMA5J33CHE3/5A FAQ
1.How can I place an order for SMA5J33CHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J33CHE3/5A 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 SMA5J33CHE3/5A reliable?
The price and inventory of SMA5J33CHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J33CHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J33CHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J33CHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J33CHE3/5A?
SMA5J33CHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J33CHE3/5A 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 SMA5J33CHE3/5A?
For technical support, including SMA5J33CHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J33CHE3/5A requirements.
6.How does Aetrix verify that SMA5J33CHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J33CHE3/5A 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 SMA5J33CHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J33CHE3/5A?
All SMA5J33CHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J33CHE3/5A, 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 SMA5J33CHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J33CHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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