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Vishay General Semiconductor - Diodes Division SMBG12CHE3/52
- Part No.:
- SMBG12CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG12CHE3/52.pdf
- Description:
- TVS DIODE 12VWM 22VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,062
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Product details
Overview
SMBG12CHE3/52 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 and 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), 30.2 A peak pulse current (IPPM), and 19.9 V maximum clamping voltage (VC) - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the SMBG12CHE3/52 datasheet, SMBG12CHE3/52 pinout, SMBG12CHE3/52 application, or SMBG12CHE3/52 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance data, RoHS-compliant material categorization, and direct alternative part comparisons for robust circuit protection design.
Technical Context
The SMBG12CHE3/52 operates as a bi-directional avalanche diode with symmetrical clamping behavior in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<5 µA at VWM), while the 100 °C/W junction-to-ambient thermal resistance requires careful PCB copper pad layout per JEDEC standards.
Designed for repetitive surge duty cycles up to 0.01 %, it withstands 8.3 ms half-sine surges up to 100 A (uni-directional only - not applicable here) and meets MSL Level 1 reflow profile (260 °C peak). The device is rated for -55 °C to +150 °C operating junction temperature and complies with UL 497B for protector classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12 V - maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 13.3–14.7 V at 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 19.9 V at IPPM = 30.2 A - peak voltage seen by protected circuit under 600 W 10/1000 µs surge; critical for IC-level survivability. |
| PPPM (Peak Pulse Power) | 600 W - maximum non-repetitive surge energy absorption capability; validated per IEC 61000-4-5 waveform. |
| ID (Reverse Leakage) | <5 µA at 12 V - minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max. | +150 °C - enables use in under-hood automotive environments and thermally constrained industrial enclosures. |
| AEC-Q101 Qualified | Yes - certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A114. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing lead frame with matte tin-plated terminals solderable per J-STD-002 and JESD22-B102; no polarity marking for bi-directional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | No functional distinction between terminals; either terminal may connect to line or ground - enables flexible placement on differential or AC lines. |
| Case / Body | Thermal path & mechanical anchor | DO-215AA body transfers heat to PCB copper pads (0.2" × 0.2"); RθJA = 100 °C/W assumes minimum recommended pad layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC signals, RS-485 buses, and ungrounded sensor outputs without polarity concerns. |
| 600 W surge rating (10/1000 µs) | Meets IEC 61000-4-5 Level 4 immunity requirements for industrial and automotive electronics. |
| AEC-Q101 qualification | Validates long-term reliability in automotive applications including engine control modules and ADAS sensor interfaces. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow assembly without preconditioning or special handling. |
| Glass-passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity-induced parameter drift vs. epoxy-passivated alternatives. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting CAN FD or LIN bus transceivers from load-dump and jump-start induced transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional TVS placed across differential pair or supply rail to clamp surges before they reach transceiver inputs. Use Value: Limits voltage to ≤19.9 V during 30.2 A surge, preventing latch-up or gate oxide damage in 3.3 V/5 V transceivers compliant with ISO 16750-2. |
Use Scenario: Safeguarding PLC analog input channels (e.g., 4–20 mA loops) against field-wiring induced lightning surges. IC Role / Device Role / Timing Role: Primary front-end clamping device mounted at connector entry point to shunt energy before signal conditioning circuitry. Use Value: Absorbs 600 W transient energy while maintaining <5 µA leakage at 12 V, preserving measurement accuracy in high-impedance sensing paths. |
| Consumer USB Port Protection | Telecom Line Interface |
|
Use Scenario: ESD and cable discharge protection for USB 2.0 data lines in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Bi-directional TVS placed differentially across D+ and D− to suppress ±15 kV contact ESD per IEC 61000-4-2. Use Value: Responds in <1 ns to divert ESD current away from USB PHY, with clamping voltage low enough to avoid data corruption or PHY latch-up. |
Use Scenario: Overvoltage protection on POTS line interface circuits in VoIP gateways and DSL modems. IC Role / Device Role / Timing Role: Stand-off-rated TVS connected between tip/ring and ground to handle lightning-induced common-mode surges. Use Value: Withstands repeated 10/1000 µs surges up to 600 W while maintaining UL 497B recognition for telecom safety compliance. |
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 package, but lower PPPM (400 W vs. 600 W); higher VC (23.2 V vs. 19.9 V) at rated IPPM. | Limited to lower-energy surge environments (e.g., consumer USB); insufficient for ISO 7637-2 Pulse 5a load-dump in automotive. | Select SMBG12CHE3/52 when 600 W surge headroom and tighter clamping are required; SMBJ12CA-E3/52 suits cost-sensitive, lower-risk applications. |
| SMCJ12CAHE3/52 | Same VWM and AEC-Q101 qualification, but larger DO-214AB (SMC) package; higher PPPM (1500 W), lower VC (19.0 V), and higher thermal mass. | Requires more PCB area; better suited for high-power industrial motor drives where sustained surge energy exceeds SMBG limits. | Choose SMBG12CHE3/52 for space-constrained automotive modules; SMCJ12CAHE3/52 where board real estate allows and >600 W margin is needed. |
Compared with SMBJ12CA-E3/52 and SMCJ12CAHE3/52, SMBG12CHE3/52 uniquely balances 600 W surge capability, AEC-Q101 qualification, and compact DO-215AA footprint - making it optimal for automotive and industrial designs requiring high reliability in minimal space.
Availability
SMBG12CHE3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface circuits requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG12CHE3/52 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, precision, and automotive-grade qualification.
The SMBG series is engineered for high-energy transient suppression in space-constrained, high-reliability applications - particularly targeting AEC-Q101-compliant automotive electronics and industrial control systems demanding consistent clamping performance.
FAQ
What is the clamping voltage of SMBG12CHE3/52 at its rated peak pulse current?
The SMBG12CHE3/52 has a maximum clamping voltage (VC) of 19.9 V at its rated peak pulse current (IPPM) of 30.2 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream ICs see limited overvoltage during surge events. The SMBG12CHE3/52 maintains this clamping performance across its qualified temperature range (-55 °C to +150 °C).
Is SMBG12CHE3/52 suitable for automotive applications?
Yes, SMBG12CHE3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, ADAS sensor interfaces, and infotainment systems. Its bi-directional architecture, 12 V stand-off, and 600 W surge capability meet ISO 7637-2 and ISO 16750-2 requirements. The SMBG12CHE3/52 also carries UL 497B recognition for protector classification in vehicle subsystems.
What does the "HE3" suffix indicate in SMBG12CHE3/52?
The "HE3" suffix in SMBG12CHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance. Unlike base "E3" parts, HE3 variants undergo additional stress testing for automotive reliability, including extended temperature cycling and high-temperature reverse bias life testing. The SMBG12CHE3/52 is fully compatible with lead-free reflow profiles up to 260 °C peak.
How does SMBG12CHE3/52 differ from uni-directional SMBG12A variants?
The SMBG12CHE3/52 is bi-directional with symmetrical clamping in both polarities and no cathode band marking, whereas SMBG12A is uni-directional with a visible cathode band and only clamps in reverse bias. The SMBG12CHE3/52 supports AC-coupled or floating signal lines (e.g., RS-485), while SMBG12A is restricted to DC-biased rails. Both share identical VWM (12 V) and PPPM (600 W), but SMBG12CHE3/52 has slightly higher VBR tolerance (13.3–14.7 V vs. 13.3–14.7 V min/max same).
What PCB layout guidance applies to SMBG12CHE3/52 for optimal thermal performance?
For optimal thermal performance, SMBG12CHE3/52 must be mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. This layout achieves the rated RθJA of 100 °C/W. Reducing pad size increases junction temperature rise during surge events and risks parametric shift or failure. The SMBG12CHE3/52 thermal path relies entirely on these external pads - no internal heatsinking is provided.
SMBG12CHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG12CHE3/52 FAQ
1.How can I place an order for SMBG12CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG12CHE3/52 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 SMBG12CHE3/52 reliable?
The price and inventory of SMBG12CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG12CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG12CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG12CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG12CHE3/52?
SMBG12CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG12CHE3/52 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 SMBG12CHE3/52?
For technical support, including SMBG12CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG12CHE3/52 requirements.
6.How does Aetrix verify that SMBG12CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG12CHE3/52 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 SMBG12CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG12CHE3/52?
All SMBG12CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG12CHE3/52, 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 SMBG12CHE3/52 part is unused and in its original packaging.
Return procedure for SMBG12CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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