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Vishay General Semiconductor - Diodes Division SMBG33CHE3/52
- Part No.:
- SMBG33CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG33CHE3/52.pdf
- Description:
- TVS DIODE 33VWM 59VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,367
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Product details
Overview
SMBG33CHE3/52 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping voltage transients on signal or power lines. It features 33 V stand-off voltage (VWM), 36.7–40.6 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤53.3 V at 11.3 A peak surge current - used in automotive sensor line protection and industrial I/O interface surge suppression.
For engineers reviewing the SMBG33CHE3/52 datasheet, SMBG33CHE3/52 pinout, SMBG33CHE3/52 application, or SMBG33CHE3/52 equivalent, key selection considerations include bi-directional clamping capability, AEC-Q101 qualification, 150 °C max junction temperature, RoHS-compliant HE3 suffix, and DO-215AA thermal performance with RθJA = 100 °C/W.
Technical Context
This device operates as a bi-directional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its symmetrical VBR specification (min 36.7 V / max 40.6 V at 1 mA) ensures consistent clamping in both polarities under ESD or lightning-induced transients.
Rated for 600 W peak pulse power per 10/1000 µs waveform at TA = 25 °C and derated above that temperature, it supports repetitive surge duty cycles up to 0.01 % and withstands 100 A non-repetitive forward surge (8.3 ms half-sine) in uni-directional mode - though SMBG33CHE3/52 is bi-directional and thus excludes IFSM rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 36.7 V / 40.6 V at 1 mA - defines guaranteed avalanche onset range for reliable bi-directional triggering |
| VC @ IPPM | ≤53.3 V at 11.3 A - clamping voltage during full-rated 600 W transient, limiting downstream stress |
| PPPM | 600 W (10/1000 µs) - peak surge energy handling capacity compatible with IEC 61000-4-5 Level 4 |
| TJ max | +150 °C - enables operation in under-hood automotive environments and high-ambient industrial enclosures |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
| Package | DO-215AA (SMBG) - surface-mount gull-wing leadform with 5.0 mm × 5.0 mm copper pad thermal design |
Pinout & Package
DO-215AA (SMBG) package: gull-wing surface-mount outline with two terminals; no polarity marking for bi-directional devices; 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 avalanche junction | Either terminal serves as cathode or anode depending on transient polarity - no orientation required during placement |
| Case (exposed metal) | Thermal conduction path | Not electrically connected; provides mechanical stability and aids heat dissipation via PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validated for automotive electronics including engine control modules and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under humidity and thermal cycling |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity preconditioning |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance - suitable for high-reliability industrial and automotive assembly |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional TVS clamp placed at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: SMBG33CHE3/52 clamps 600 W surges to ≤53.3 V while maintaining 33 V system operating margin - preventing latch-up or damage to 3.3 V/5 V microcontrollers and ADCs. |
Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary transient suppressor mounted directly at terminal block entry, coordinated with upstream fuse and downstream filtering. Use Value: With 150 °C TJ max and AEC-Q101 validation, SMBG33CHE3/52 sustains repeated 10/1000 µs transients in harsh factory environments without parameter drift. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
|
Use Scenario: Shielding RS-485 or Ethernet PHY data lines from ESD (IEC 61000-4-2) and fast transient bursts in base station backhaul equipment. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp placed adjacent to connector to minimize stub length and preserve signal integrity. Use Value: SMBG33CHE3/52's sub-ns response and symmetrical VBR ensure equal clamping for positive/negative ESD events - critical for differential bus robustness. |
Use Scenario: Adding secondary surge immunity to USB-C or barrel jack inputs in wall adapters subjected to user-handling ESD and mains coupling. IC Role / Device Role / Timing Role: Secondary-level protector downstream of primary MOV/fuse, absorbing residual transients that bypass front-end filtering. Use Value: The HE3 suffix guarantees whisker-resistant terminations for automated SMT assembly, while DO-215AA footprint allows compact layout in space-constrained adapter PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA-E3/52 | Same VWM (33 V), identical DO-215AB (SMB) package but slightly higher VC (53.3 V vs. 53.3 V - matched), lower PPPM (600 W same), non-AEC-Q101 rated | Lacks automotive qualification; suitable for commercial/industrial use where AEC-Q101 is not mandated | Select SMBJ33CA-E3/52 when cost optimization is prioritized and automotive reliability testing is unnecessary |
| SMAJ33AHE3/A | Uni-directional variant (33 V VWM), DO-214AC (SMA) package, smaller footprint, lower PPPM (400 W), AEC-Q101 qualified | Requires correct polarity orientation; limited to DC-biased or ground-referenced lines | Choose SMAJ33AHE3/A only for unidirectional paths with strict space constraints and verified polarity stability |
Compared with SMBJ33CA-E3/52 and SMAJ33AHE3/A, SMBG33CHE3/52 uniquely combines bi-directional operation, AEC-Q101 qualification, and DO-215AA thermal performance - making it the preferred choice for automotive sensor interfaces and floating industrial buses where polarity independence and high-reliability validation are mandatory.
Availability
SMBG33CHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom line interface surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMBG33CHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBG series targets high-energy transient suppression in automotive and industrial systems, engineered for robustness under extreme thermal and electrical stress while meeting stringent automotive qualification standards.
FAQ
What is the polarity configuration of SMBG33CHE3/52?
SMBG33CHE3/52 is a bi-directional TVS diode with symmetrical avalanche characteristics - neither terminal is designated anode or cathode. No band marking is present on the DO-215AA package, and it functions identically regardless of orientation on the PCB. This eliminates polarity-checking during automated placement and simplifies layout for AC-coupled or floating signal paths.
Does SMBG33CHE3/52 meet automotive qualification standards?
Yes, SMBG33CHE3/52 carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay documentation. It has undergone stress testing including temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress testing - validating its suitability for under-hood and chassis-mounted automotive electronics where reliability is mission-critical.
What is the maximum clamping voltage of SMBG33CHE3/52 under rated surge conditions?
The maximum clamping voltage (VC) of SMBG33CHE3/52 is 53.3 V at 11.3 A peak pulse current (IPPM), measured using the standardized 10/1000 µs waveform. This value ensures downstream ICs operating at 3.3 V or 5 V logic levels remain within safe voltage margins during worst-case transient events.
How does the DO-215AA package of SMBG33CHE3/52 impact thermal performance?
The DO-215AA (SMBG) package of SMBG33CHE3/52 delivers RθJA = 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This thermal resistance enables sustained operation at +150 °C junction temperature - critical for high-ambient environments like engine compartments or sealed industrial enclosures where airflow is limited.
Is SMBG33CHE3/52 compatible with lead-free reflow processes?
Yes, SMBG33CHE3/52 is rated MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C, fully compatible with standard lead-free soldering profiles. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability requirements, and the HE3 suffix confirms compliance with JESD 201 Class 2 whisker resistance - ensuring long-term interconnect integrity.
SMBG33CHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- 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):
- 10.2A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBG)
SMBG33CHE3/52 FAQ
1.How can I place an order for SMBG33CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG33CHE3/52 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 SMBG33CHE3/52 reliable?
The price and inventory of SMBG33CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG33CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG33CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG33CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG33CHE3/52?
SMBG33CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG33CHE3/52 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 SMBG33CHE3/52?
For technical support, including SMBG33CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG33CHE3/52 requirements.
6.How does Aetrix verify that SMBG33CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG33CHE3/52 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 SMBG33CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG33CHE3/52?
All SMBG33CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG33CHE3/52, 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 SMBG33CHE3/52 part is unused and in its original packaging.
Return procedure for SMBG33CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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