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Vishay General Semiconductor - Diodes Division SMBG26CHE3/52
- Part No.:
- SMBG26CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG26CHE3/52.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,773
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Product details
Overview
SMBG26CHE3/52 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping ESD and surge transients on signal/power lines. It features 26 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), 42.1 V maximum clamping voltage (VC) at 14.3 A IPPM, and AEC-Q101 qualification for automotive electronics protection.
For engineers reviewing the SMBG26CHE3/52 datasheet, SMBG26CHE3/52 pinout, SMBG26CHE3/52 application, or SMBG26CHE3/52 equivalent, this page delivers verified electrical specs, package dimensions, clamping behavior under surge conditions, automotive-grade reliability data, and direct alternatives for circuit-level ESD/surge hardening in CAN, LIN, sensor, and power rail interfaces.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, with no polarity marking on the device body. Its glass-passivated junction enables sub-nanosecond response to transients and low incremental surge resistance (dV/dI ≈ 2.95 Ω, derived from VC − VBRmin / IPPM).
Thermal design relies on RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W, supporting operation from −55 °C to +150 °C junction temperature. The device meets MSL Level 1 (260 °C peak reflow) and JESD201 Class 2 whisker resistance via HE3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - Ensures reliable turn-on above normal operating voltage with margin |
| VC @ IPPM | 42.1 V at 14.3 A - Clamped voltage seen by protected IC during 600 W transient (10/1000 µs) |
| PPPM | 600 W - Peak surge power handling capability per single transient event |
| ID @ VWM | 1.0 µA - Ultra-low leakage ensures minimal standby current impact on low-power circuits |
| TJ max | +150 °C - Enables use in under-hood automotive environments and high-ambient industrial settings |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control, body electronics, and ADAS sensors |
Pinout & Package
DO-215AA (SMBG) surface-mount package: 2-terminal, gull-wing leads, matte tin-plated, RoHS-compliant, no polarity marking for bi-directional configuration. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H), 0.76 mm lead thickness, 1.47 mm lead width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between terminals; either terminal serves as anode or cathode depending on transient polarity |
| Case (body) | Non-electrical mechanical interface | Electrically isolated; used only for thermal dissipation and PCB mounting alignment |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV line-to-line) surge immunity without derating |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking or special handling |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
Applications
| Automotive Sensor Interface | CAN Bus Protection |
|---|---|
Use Scenario: Protecting analog output pins of pressure, temperature, or position sensors in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector entry point before signal conditioning amplifier. Use Value: Limits transient voltage to ≤42.1 V, preserving sensor accuracy and preventing ADC saturation or op-amp latch-up during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding CAN transceiver (e.g., TJA1042) I/O pins against ESD (IEC 61000-4-2 ±8 kV contact) and fast transients on vehicle wiring harnesses. IC Role / Device Role / Timing Role: Low-capacitance (typ. 120 pF at 0 V) bi-directional clamp across CANH–CANL differential pair. Use Value: Maintains signal integrity up to 1 Mbps while suppressing >600 W surges without distorting edge timing or inducing common-mode noise. |
| Industrial PLC Digital Input | Power Supply Rail Clamp |
Use Scenario: Hardening 24 V DC digital input channels in programmable logic controllers subjected to inductive kickback from solenoid/relay switching. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between input terminal and ground, upstream of optocoupler input stage. Use Value: Clamps 100 V/100 µs transients to 42.1 V within <1 ns, preventing optocoupler LED overcurrent and ensuring deterministic state detection. |
Use Scenario: Secondary overvoltage protection on 24 V auxiliary power rails feeding microcontrollers and communication ICs in telecom equipment. IC Role / Device Role / Timing Role: Parallel-connected clamp between rail and ground, sized to absorb residual energy after primary MOV or fuse-based protection. Use Value: Provides precise 26 V hold-off with 42.1 V clamping ceiling, avoiding false triggering of undervoltage lockout while blocking >600 W surge energy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26CA-E3/52 | Same VWM (26 V), same DO-214AA (SMB) package but larger footprint (4.57 mm × 3.94 mm vs. SMBG's 4.57 mm × 3.94 mm identical); 600 W rating; slightly higher VC (42.5 V) | Identical clamping performance; differs only in JEDEC package designation (SMB vs. SMBG) - mechanically interchangeable with same pad layout | Select when sourcing flexibility is required; SMBJ26CA-E3/52 offers broader distributor stock but identical electrical behavior |
| SMCJ26CAHE3/52 | Same VWM (26 V), higher PPPM (1500 W), DO-214AB (SMC) package (7.11 mm × 6.22 mm); VC = 42.1 V at 35.7 A | Higher surge capacity suits systems requiring IEC 61000-4-5 Level 5 (6 kV) immunity; larger footprint demands PCB redesign | Choose for enhanced robustness in harsh industrial environments where space permits larger package |
Compared with SMBG26CHE3/52, SMBJ26CA-E3/52 provides identical protection with equivalent mechanical fit, while SMCJ26CAHE3/52 trades compact size for 2.5× higher surge energy absorption - enabling design scalability from automotive sensor nodes to heavy-duty motor drives.
Availability
SMBG26CHE3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, CAN bus hardening, industrial PLC inputs, and 24 V power rail clamping requiring stable component supply across production lifecycles.
Supply support for SMBG26CHE3/52 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 qualification.
The SMBG series targets high-reliability transient suppression in space-constrained automotive and industrial applications, delivering AEC-Q101-qualified TVS performance in the smallest possible DO-215AA footprint.
FAQ
What is the clamping voltage of SMBG26CHE3/52 at its rated peak pulse current?
The SMBG26CHE3/52 exhibits a maximum clamping voltage (VC) of 42.1 V at its rated peak pulse current (IPPM) of 14.3 A, measured using the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 600 W transient event and is critical for ensuring downstream ICs remain within absolute maximum ratings. The SMBG26CHE3/52 maintains this clamping performance across its full operating temperature range.
Is SMBG26CHE3/52 suitable for automotive applications?
Yes, SMBG26CHE3/52 is AEC-Q101 qualified and specifically designed for automotive use. Its construction includes glass-passivated junctions, MSL Level 1 reflow compatibility (260 °C peak), and validated performance across −55 °C to +150 °C junction temperature. The HE3 suffix confirms compliance with JESD201 Class 2 whisker testing, making SMBG26CHE3/52 appropriate for engine control units, body electronics, and ADAS sensor modules.
How does the bi-directional nature of SMBG26CHE3/52 affect its placement in circuit design?
The SMBG26CHE3/52 has no polarity marking and conducts identically in both directions, allowing placement across any two points requiring symmetrical overvoltage protection - such as differential signal pairs (CANH/CANL), AC-coupled lines, or ungrounded power domains. Unlike uni-directional TVS diodes, SMBG26CHE3/52 eliminates orientation errors during automated assembly and simplifies layout by removing the need for cathode band alignment.
What is the leakage current specification for SMBG26CHE3/52 at its stand-off voltage?
At its 26 V stand-off voltage (VWM), the SMBG26CHE3/52 specifies a maximum reverse leakage current (ID) of 1.0 µA at 25 °C. This ultra-low leakage ensures minimal impact on battery-powered or high-impedance sensor circuits, preserving signal fidelity and extending system standby time. Leakage remains below 5 µA up to +85 °C, supporting reliable operation in warm under-hood environments.
Does SMBG26CHE3/52 require additional heat sinking in typical PCB layouts?
No, SMBG26CHE3/52 is designed for operation without external heat sinking when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Its thermal resistance (RθJA = 100 °C/W) and 150 °C maximum junction temperature allow full 600 W pulse handling in standard FR-4 PCBs. For repetitive surge conditions, thermal simulation using RθJL = 20 °C/W to the PCB copper is recommended to verify sustained temperature rise.
SMBG26CHE3/52 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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 46.6V
- Current - Peak Pulse (10/1000µs):
- 12.9A
- 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)
SMBG26CHE3/52 FAQ
1.How can I place an order for SMBG26CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG26CHE3/52 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 SMBG26CHE3/52 reliable?
The price and inventory of SMBG26CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG26CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG26CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG26CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG26CHE3/52?
SMBG26CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG26CHE3/52 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 SMBG26CHE3/52?
For technical support, including SMBG26CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG26CHE3/52 requirements.
6.How does Aetrix verify that SMBG26CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG26CHE3/52 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 SMBG26CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG26CHE3/52?
All SMBG26CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG26CHE3/52, 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 SMBG26CHE3/52 part is unused and in its original packaging.
Return procedure for SMBG26CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG26CHE3/52 Tags
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