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Vishay General Semiconductor - Diodes Division SMBG12C-E3/52
- Part No.:
- SMBG12C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG12C-E3/52.pdf
- Description:
- TVS DIODE 12VWM 22VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,793
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Product details
Overview
SMBG12C-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 12 V stand-off voltage (VWM), 13.3–14.7 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), and clamps to ≤19.9 V at 30.2 A peak surge current - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and load dump.
For engineers reviewing the SMBG12C-E3/52 datasheet, SMBG12C-E3/52 pinout, SMBG12C-E3/52 application, or SMBG12C-E3/52 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The SMBG12C-E3/52 operates as a bi-directional avalanche diode, symmetrically clamping voltage excursions above ±13.3 V in either polarity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 12 V), while its low incremental surge resistance enables effective energy diversion during 10/1000 μs transients.
Designed for surface-mount use in high-reliability environments, it meets AEC-Q101 stress test requirements and is rated for operation from –55 °C to +150 °C. The device exhibits typical thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting robust thermal management in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 13.3 V / 14.7 V at 1 mA - guaranteed avalanche conduction threshold in both directions |
| VC @ IPPM | ≤19.9 V at 30.2 A - clamped voltage under 600 W 10/1000 μs surge, defining protection level |
| PPPM | 600 W - peak transient power handling capacity per single pulse, derated above 25 °C |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood automotive locations |
| MSL Level | Level 1 (per J-STD-020) - no floor life limitation; safe for reflow up to 260 °C peak |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing leaded case with matte tin-plated terminals; no polarity marking for bi-directional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional clamping node | No functional distinction - either terminal connects to protected line; both conduct identically during overvoltage in either polarity |
| Case / Body | Non-electrical mechanical interface | Thermally coupled to PCB copper pads; contributes to heat dissipation but not electrically active |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) when properly mounted |
| Glass-passivated junction | Ensures long-term stability of VBR and low parametric drift across temperature and lifetime |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS sensor interface applications |
| MSL Level 1 rating | Eliminates bake-out requirement and allows direct placement into high-temperature reflow profiles |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Voltage clamping element placed between signal line and ground, responding within <1 ns to limit transient overshoot. Use Value: Maintains signal integrity by limiting excursion to ≤19.9 V, preventing latch-up or damage to downstream 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding PLC digital input modules and fieldbus nodes (RS-485, Profibus) against induced surges from nearby motor switching or lightning coupling. IC Role / Device Role / Timing Role: Parallel-connected transient shunt that diverts >30 A surge current away from sensitive receiver circuitry. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) without external series impedance or timing delays. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
Use Scenario: Secondary-side DC bus protection in wall adapters and USB PD chargers exposed to system-level ESD and capacitive coupling transients. IC Role / Device Role / Timing Role: Bi-directional clamp across VBUS and GND, activated only during overvoltage events, otherwise presenting <1.0 μA leakage. Use Value: Prevents false triggering or shutdown of DC-DC controllers by holding voltage below 19.9 V during 600 W surges. | Use Scenario: Overvoltage protection on Ethernet PHY power rails (e.g., 3.3 V bias supply) and auxiliary signaling lines in telecom base station line cards. IC Role / Device Role / Timing Role: Standoff-rated protector that remains non-conductive until transient exceeds 12 V, then clamps within nanoseconds. Use Value: Preserves signal fidelity on high-speed lines by minimizing capacitance (<100 pF at 0 V) and avoiding forward conduction during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA-E3/52 | Same VWM (12 V), identical DO-214AA (SMB) package; 600 W rating but slightly higher VC (21.2 V @ 28.3 A) | Higher clamping voltage reduces protection margin for 3.3 V logic; suitable where layout space permits larger pad thermal mass | Select SMBJ12CA-E3/52 only if DO-214AA footprint is already standardized and thermal design accommodates higher VC |
| SMCJ12CAHE3/52 | Same VWM and bi-directionality, but DO-214AB (SMC) package; 1500 W rating, lower VC (19.9 V @ 75.5 A), AEC-Q101 qualified | Higher power handling supports repeated surge events; larger footprint requires PCB redesign | Choose SMCJ12CAHE3/52 when system-level surge testing exceeds single-event 600 W requirements or automotive AEC-Q101 requalification is needed |
Compared with SMBG12C-E3/52, SMBJ12CA-E3/52 offers identical voltage ratings but less precise clamping performance, while SMCJ12CAHE3/52 delivers superior surge endurance at the cost of increased board area - making SMBG12C-E3/52 optimal for space-constrained, single-pulse automotive and industrial I/O protection.
Availability
SMBG12C-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card protection requiring stable component supply and AEC-Q101-compliant surge suppression.
Supply support for SMBG12C-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 and application-specific performance.
The SMBG series is part of Vishay's TRANSZORB® TVS portfolio, engineered specifically for high-power, surface-mount transient suppression in automotive, industrial, and communications systems where bi-directional clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the polarity configuration of SMBG12C-E3/52?
The SMBG12C-E3/52 is a bi-directional TVS diode with symmetrical avalanche characteristics in both polarities. It has no cathode marking and functions identically regardless of terminal orientation - making it ideal for protecting AC-coupled or floating signal paths without polarity constraints. This behavior is confirmed in the Vishay datasheet Document Number 88456, Section "DEVICES FOR BI-DIRECTION APPLICATIONS".
Does SMBG12C-E3/52 meet automotive qualification standards?
Yes, SMBG12C-E3/52 is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 88456, page 2, Notes section). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its use in automotive powertrain, body electronics, and ADAS sensor interfaces where reliability under harsh conditions is critical.
What is the maximum clamping voltage for SMBG12C-E3/52 under surge conditions?
The maximum clamping voltage (VC) for SMBG12C-E3/52 is 19.9 V at 30.2 A peak pulse current (IPPM), measured using the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 600 W transient event and is specified in the Electrical Characteristics table on page 2 of the Vishay datasheet 88456.
How does the SMBG12C-E3/52 package differ from SMBJ or SMCJ variants?
SMBG12C-E3/52 uses the DO-215AA (SMBG) package - a gull-wing variant with tighter lead pitch and lower profile than DO-214AA (SMBJ) or DO-214AB (SMCJ). Its mechanical outline matches JEDEC MS-013AC, enabling finer pitch layouts and improved automated placement yield, while maintaining thermal performance via 5.0 mm × 5.0 mm copper pad mounting per terminal.
Is SMBG12C-E3/52 RoHS-compliant and lead-free?
Yes, the "E3" suffix in SMBG12C-E3/52 indicates full RoHS compliance per Directive 2011/65/EU, with matte tin-plated leads meeting J-STD-002 and JESD 22-B102 solderability requirements. It also passes JESD 201 Class 1A whisker testing, confirming long-term reliability in lead-free assembly processes without risk of tin whisker growth.
SMBG12C-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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 27.3A
- 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)
SMBG12C-E3/52 FAQ
1.How can I place an order for SMBG12C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG12C-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 SMBG12C-E3/52 reliable?
The price and inventory of SMBG12C-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 SMBG12C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG12C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG12C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG12C-E3/52?
SMBG12C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG12C-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 SMBG12C-E3/52?
For technical support, including SMBG12C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG12C-E3/52 requirements.
6.How does Aetrix verify that SMBG12C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG12C-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 SMBG12C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG12C-E3/52?
All SMBG12C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG12C-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 SMBG12C-E3/52 part is unused and in its original packaging.
Return procedure for SMBG12C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG12C-E3/52 Tags
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