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Vishay General Semiconductor - Diodes Division SMBG33-E3/52
- Part No.:
- SMBG33-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG33-E3/52.pdf
- Description:
- TVS DIODE 33VWM 59VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,579
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Product details
Overview
SMBG33-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMBG package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 33 V standoff voltage (VWM), 36.7–40.6 V breakdown voltage (VBR) at 1 mA, 53.3 V clamping voltage (VC) at 11.3 A peak pulse current, and 600 W peak pulse power rating with a 10/1000 µs waveform - deployed in automotive power supply inputs and industrial sensor interfaces.
For engineers reviewing the SMBG33-E3/52 datasheet, SMBG33-E3/52 pinout, SMBG33-E3/52 application, or SMBG33-E3/52 equivalent, this page delivers verified electrical parameters, DO-215AA package details, AEC-Q101 qualification status, thermal resistance data, and real-world design context for surge protection in 12 V/24 V systems.
Technical Context
The SMBG33-E3/52 operates as a unidirectional avalanche diode, clamping transients above its breakdown threshold while maintaining low leakage (<1.0 µA at 33 V) below VWM. Its glass-passivated junction ensures stable performance across -55 °C to +150 °C operating temperature range and supports repetitive surge events at 0.01% duty cycle.
With a typical junction-to-lead thermal resistance of 20 °C/W and junction-to-ambient of 100 °C/W, it relies on PCB copper pad area (0.2" × 0.2") for effective heat dissipation during 8.3 ms half-sine surges up to 100 A (IFSM). The device meets UL 94 V-0 flammability and JESD201 Class 1A whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - Maximum continuous reverse operating voltage before clamping begins; sets safe DC rail margin for 24 V nominal systems. |
| VBR (min/max) | 36.7 V / 40.6 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 53.3 V at 11.3 A - Clamped voltage under 10/1000 µs surge; defines worst-case stress on downstream ICs like microcontrollers or CAN transceivers. |
| PPPM | 600 W - Peak pulse power handling capability; enables protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports protection against load dump events in automotive 12 V systems. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood environments without derating in most mounting configurations. |
| Package | DO-215AA (SMBG) - Surface-mount gull-wing package with 2.10 mm lead pitch; compatible with automated SMT placement and reflow profiles up to 260 °C peak. |
Pinout & Package
DO-215AA (SMBG) is a 2-terminal surface-mount package with gull-wing leads. Polarity is marked by a cathode band on the component body; the banded end is the cathode (K), and the opposite end is the anode (A).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Positive terminal for unidirectional conduction path | Connected to protected line (e.g., 24 V rail); conducts only during forward-biased surge conditions (e.g., load dump). |
| Cathode (K) | Negative terminal; clamping node | Connected to ground or low-impedance return; provides low-impedance path to shunt transient energy when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics; supports PPAP documentation and long-term reliability requirements. |
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against high-energy transients per ISO 7637-2 without external series impedance or staged clamping. |
| Glass passivated junction | Ensures stable VBR and low leakage over time and temperature; eliminates risk of moisture-induced degradation in humid environments. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles; no floor life limitation or baking required prior to assembly. |
| RoHS-compliant, matte tin plating | Meets J-STD-002 solderability and JESD22-B102 intermetallic formation standards; supports high-yield, void-free solder joints. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V power inputs in vehicle ECUs against load dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Primary clamping device placed directly at connector entry point to limit voltage seen by DC-DC converters and microcontrollers. Use Value: Clamps to 53.3 V during 11.3 A surge, preventing damage to 36 V-rated input stages and eliminating need for secondary TVS staging. |
Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA loops) and digital I/O (e.g., RS-485) in factory automation sensors exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) shunt element that diverts transient energy before it reaches precision ADCs or isolated interface ICs. Use Value: Sub-1 µA leakage at 33 V preserves signal integrity in high-impedance sensor circuits; 53.3 V clamping protects 36 V absolute maximum rated receivers. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Inputs |
|
Use Scenario: Securing 48 V DC power feeds in remote radio units and base station backhaul equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of bulk capacitance and primary DC-DC stage; coordinates with MOVs for multi-level protection. Use Value: 600 W rating handles partial energy from IEC 61000-4-5 Comb Wave (1.2/50 µs + 8/20 µs) without degradation; DO-215AA footprint enables compact board layout. |
Use Scenario: Shielding BLDC motor driver power inputs in smart home appliances (e.g., washing machines, HVAC fans) from commutation spikes and EFT bursts. IC Role / Device Role / Timing Role: Unidirectional clamp placed between bridge rectifier output and bulk capacitor to absorb flyback energy from inductive loads. Use Value: 100 A IFSM withstands repeated 8.3 ms surges from motor startup; 150 °C TJ max supports sealed enclosure thermal environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A-E3/52 | Same DO-215AB (SMB) package but slightly larger body; identical VWM/VBR/VC specs; 10% higher thermal resistance (RθJA = 110 °C/W). | Less suitable for high-density layouts due to 0.255" length vs. SMBG's 0.235"; same AEC-Q101 qualification. | Select SMBJ33A-E3/52 only if legacy SMB footprint compatibility is required; SMBG33-E3/52 offers better thermal performance in constrained spaces. |
| SMCJ33A-E3/52 | DO-214AB (SMC) package; 1500 W PPPM; higher VC (59.3 V); 2× larger footprint and 3× higher thermal mass. | Used where higher surge endurance is mandatory (e.g., outdoor telecom cabinets); not drop-in due to different pad layout and height. | Choose SMCJ33A-E3/52 only when 600 W is insufficient and board space allows larger SMC footprint; SMBG33-E3/52 remains optimal for cost- and size-sensitive automotive modules. |
Compared with SMBJ33A-E3/52 and SMCJ33A-E3/52, SMBG33-E3/52 delivers superior thermal efficiency in minimal area, making it the preferred choice for AEC-Q101-compliant 24 V systems where board real estate and junction temperature rise are critical constraints.
Availability
SMBG33-E3/52 is available at Aetrix Electronics and suitable for automotive power inputs, industrial sensor interfaces, telecom DC feeds, and consumer appliance motor drive circuits requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG33-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, ruggedness, and automotive-grade qualification.
The SMBG series was engineered specifically for high-reliability transient suppression in space-constrained automotive and industrial applications, balancing 600 W surge capability with MSL Level 1 reflow compatibility and AEC-Q101 validation.
FAQ
What is the standoff voltage (VWM) of the SMBG33-E3/52?
The SMBG33-E3/52 has a standoff voltage (VWM) of 33 V, meaning it remains non-conductive under normal operating conditions up to this DC or RMS voltage. This value is critical for ensuring compatibility with 24 V nominal systems while providing sufficient margin before clamping initiates. The SMBG33-E3/52 maintains less than 1.0 µA leakage current at this voltage, preserving system efficiency and signal fidelity.
Is SMBG33-E3/52 AEC-Q101 qualified?
Yes, the SMBG33-E3/52 is AEC-Q101 qualified, as confirmed in Vishay's official datasheet (Document Number 88456, Revision 12-Nov-12). This qualification validates its suitability for automotive applications including engine control, body electronics, and ADAS subsystems. The SMBG33-E3/52 undergoes rigorous stress testing for temperature cycling, humidity, mechanical shock, and surge endurance per AEC-Q101 requirements.
What is the clamping voltage (VC) of SMBG33-E3/52 at its rated peak pulse current?
The SMBG33-E3/52 exhibits a maximum clamping voltage (VC) of 53.3 V at its specified peak pulse current (IPPM) of 11.3 A, measured using the standardized 10/1000 µs waveform. This clamping level ensures downstream components rated for 36 V absolute maximum can survive transient events without overstress. The SMBG33-E3/52 achieves this with low incremental surge resistance, minimizing voltage overshoot during fast-rising transients.
Does SMBG33-E3/52 have a polarity marking, and how is it oriented on the PCB?
Yes, the SMBG33-E3/52 features a visible cathode band on the component body, identifying the cathode (K) terminal. During PCB layout, the banded end must be routed to ground or the lowest-potential reference node, while the unmarked end connects to the line being protected. This orientation is essential for correct unidirectional clamping behavior - reversing polarity would prevent proper surge suppression and may cause device failure under forward surge conditions like load dump.
What packaging and reel configuration does SMBG33-E3/52 ship in?
The SMBG33-E3/52 ships in 7" diameter plastic tape and reel format, with a base quantity of 750 units per reel (ordering code /52). The device uses matte tin-plated gull-wing leads compliant with J-STD-002 solderability and JESD22-B102 intermetallic standards. Each reel is RoHS-compliant and rated for MSL Level 1 handling, permitting indefinite floor life and compatibility with standard lead-free reflow profiles peaking at 260 °C.
SMBG33-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBG33-E3/52 FAQ
1.How can I place an order for SMBG33-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG33-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 SMBG33-E3/52 reliable?
The price and inventory of SMBG33-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 SMBG33-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG33-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG33-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG33-E3/52?
SMBG33-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG33-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 SMBG33-E3/52?
For technical support, including SMBG33-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG33-E3/52 requirements.
6.How does Aetrix verify that SMBG33-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG33-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 SMBG33-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG33-E3/52?
All SMBG33-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG33-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 SMBG33-E3/52 part is unused and in its original packaging.
Return procedure for SMBG33-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG33-E3/52 Tags
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