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Vishay General Semiconductor - Diodes Division SMBG33C-E3/52
- Part No.:
- SMBG33C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG33C-E3/52.pdf
- Description:
- TVS DIODE 33VWM 59VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,220
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Product details
Overview
SMBG33C-E3/52 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 a 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 - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBG33C-E3/52 datasheet, SMBG33C-E3/52 pinout, SMBG33C-E3/52 application, or SMBG33C-E3/52 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant matte tin terminations, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a bi-directional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response to ESD and lightning-induced transients. Its symmetrical VBR specification (min 36.7 V, max 40.6 V at 1 mA) ensures consistent clamping in both polarities without polarity marking.
Thermal performance is defined by RθJA = 100 °C/W (on 5.0 mm × 5.0 mm pads) and RθJL = 20 °C/W, enabling reliable operation up to TJ = +150 °C. The 600 W PPPM rating is validated per ANSI/IEEE C62.35 with 10/1000 µs waveform and 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 36.7 V / 40.6 V at 1 mA - guaranteed avalanche initiation range in both directions |
| VC @ IPPM | ≤53.3 V at 11.3 A - clamped voltage during 600 W transient, limiting downstream stress |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform, critical for ISO 7637-2 pulse 1/2a/5a immunity |
| IDR @ VWM | ≤1.0 µA - ultra-low leakage preserves signal integrity in high-impedance sensor lines |
| TJ Range | −55 °C to +150 °C - supports under-hood automotive and industrial ambient conditions |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; compatible with standard reflow profiles up to 260 °C peak |
Pinout & Package
DO-215AA (SMBG) surface-mount package: gull-wing leads, 0.235–0.255 inch (5.97–6.48 mm) body length, 0.130–0.155 inch (3.30–3.94 mm) width, 0.077–0.095 inch (1.96–2.41 mm) height. Bi-directional construction has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Bi-directional terminals conduct equally in either polarity - no cathode band; mounted without orientation constraint |
| Leads (matte tin) | Solder interface | RoHS-compliant, J-STD-002/JESD 22-B102 qualified; JESD 201 Class 1A whisker resistant (E3 suffix) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and ESD-HBM/MM |
| Glass passivated junction | Enables stable VBR tolerance and low leakage over temperature and lifetime vs. epoxy-passivated alternatives |
| 600 W peak pulse power | Withstands repetitive 10/1000 µs surges up to 0.01% duty cycle - meets IEC 61000-4-5 Level 4 line-to-line testing |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 10605 ESD), improving system-level robustness |
| UL 94 V-0 molding compound | Flame-retardant encapsulation required for automotive and industrial safety certifications |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching noise in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional clamping element placed at connector entry point to shunt transients before reaching signal conditioning ICs. Use Value: Limits induced voltage to ≤53.3 V during 11.3 A surge, preventing latch-up or damage to 3.3 V/5 V microcontrollers and ADC front-ends. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring transients from relay coils or motor drives. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, coordinated with series impedance for energy absorption. Use Value: Maintains <1.0 µA leakage at 33 V, ensuring accurate low-current detection while surviving repeated 600 W surges per IEC 61000-4-4. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Transient suppression on RS-485/RS-422 differential pairs in base station backhaul equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Symmetrical TVS pair across differential lines, providing matched clamping without skew or polarity dependency. Use Value: Delivers identical VBR (36.7–40.6 V) and VC (≤53.3 V) in both directions - essential for preserving common-mode rejection in high-speed data links. |
Use Scenario: Input protection for microcontroller GPIOs connected to pushbuttons, encoders, or relay feedback in smart home appliances. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bi-directional clamp on user-interface lines subject to ESD and contact bounce. Use Value: Sub-nanosecond response and ≤1.0 µA leakage preserve signal fidelity and battery life in always-on control circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA-E3/52 | Same DO-215AB (SMB) package but lower thermal resistance (RθJA = 85 °C/W); identical VWM/VBR/VC specs | Higher power density allows tighter layout in space-constrained telecom modules | Select SMBJ33CA-E3/52 when board area permits smaller footprint and higher thermal margin is needed. |
| 1.5KE33CA | Through-hole DO-201 package; 1500 W PPPM rating but larger size and no AEC-Q101 qualification | Suitable for prototyping or non-automotive industrial power supplies where reflow compatibility is not required | Choose 1.5KE33CA only for legacy through-hole designs or cost-sensitive non-automotive applications lacking AEC-Q101 mandate. |
Compared with SMBJ33CA-E3/52 and 1.5KE33CA, SMBG33C-E3/52 offers optimal balance of AEC-Q101 compliance, SMT manufacturability, and standardized DO-215AA footprint - making it preferred for volume automotive and industrial SMT production where reliability and process control are critical.
Availability
SMBG33C-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG33C-E3/52 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturing.
The SMBG series targets surface-mount transient suppression in harsh environments, engineered specifically for AEC-Q101 compliance, automated assembly, and robust clamping performance across −55 °C to +150 °C.
FAQ
What is the polarity configuration of SMBG33C-E3/52?
SMBG33C-E3/52 is a bi-directional TVS diode with symmetrical electrical characteristics in both directions. It has no cathode marking or polarity band on the DO-215AA package, allowing orientation-agnostic placement during SMT assembly - a key advantage for differential line protection and simplified layout routing.
Does SMBG33C-E3/52 meet automotive qualification standards?
Yes, SMBG33C-E3/52 is AEC-Q101 qualified, having passed all required stress tests including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and human-body-model ESD (HBM). This certification confirms its suitability for under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage for SMBG33C-E3/52 under surge conditions?
The maximum clamping voltage (VC) for SMBG33C-E3/52 is 53.3 V at 11.3 A peak pulse current (IPPM), measured with a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 600 W transient event, directly informing downstream IC voltage tolerance margins.
How does the SMBG33C-E3/52 package differ from SMBJ variants?
SMBG33C-E3/52 uses the DO-215AA (SMBG) package with slightly longer body dimensions (0.235–0.255 inch) versus DO-215AB (SMBJ) at 0.225–0.245 inch. While both are gull-wing SMT packages, DO-215AA provides marginally higher thermal mass and is specified with RθJA = 100 °C/W (vs. 85 °C/W for SMBJ), affecting power derating in compact layouts.
Is SMBG33C-E3/52 RoHS-compliant and lead-free?
Yes, SMBG33C-E3/52 is RoHS-compliant and lead-free, indicated by the "E3" suffix. It features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards, and passes JESD 201 Class 1A whisker testing - meeting all regulatory and process requirements for modern electronics manufacturing.
SMBG33C-E3/52 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG33C-E3/52 FAQ
1.How can I place an order for SMBG33C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG33C-E3/52 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 SMBG33C-E3/52 reliable?
The price and inventory of SMBG33C-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG33C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG33C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG33C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG33C-E3/52?
SMBG33C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG33C-E3/52 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 SMBG33C-E3/52?
For technical support, including SMBG33C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG33C-E3/52 requirements.
6.How does Aetrix verify that SMBG33C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG33C-E3/52 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 SMBG33C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG33C-E3/52?
All SMBG33C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG33C-E3/52, 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 SMBG33C-E3/52 part is unused and in its original packaging.
Return procedure for SMBG33C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG33C-E3/52 Tags
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