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Vishay General Semiconductor - Diodes Division SMBG26CHE3/5B
- Part No.:
- SMBG26CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG26CHE3/5B.pdf
- Description:
- TVS DIODE 26VWM 46.6VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,238
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Product details
Overview
SMBG26CHE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for robust overvoltage protection of DC power rails and signal lines. It features 26 V standoff voltage (VWM), 28.9–31.9 V breakdown voltage (VBR at 1 mA), 42.1 V clamping voltage (VC) at 14.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used in automotive power supply input stages and industrial sensor interfaces.
For engineers reviewing the SMBG26CHE3/5B datasheet, SMBG26CHE3/5B pinout, SMBG26CHE3/5B application, or SMBG26CHE3/5B equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C maximum junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a unidirectional avalanche diode, clamping transients above its breakdown threshold while maintaining low leakage (<1.0 µA at 26 V) under normal operation. Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1.0 ps), critical for protecting MOSFET gates and microcontroller I/O pins against ESD and load dump events.
The SMBG26CHE3/5B is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine), supports 260 °C lead-free reflow per J-STD-020 MSL Level 1, and exhibits 20 °C/W junction-to-lead thermal resistance - enabling reliable thermal dissipation in high-density automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 24 V automotive systems. |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - Tight 5% tolerance ensures predictable turn-on across temperature and production lots. |
| VC @ IPPM | 42.1 V at 14.3 A - Clamping voltage limits stress on downstream ICs during 600 W transient events. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; validated for ISO 7637-2 Pulse 1 & 2a compliance. |
| IFSM | 100 A - Withstands 8.3 ms single half-sine surge; protects against alternator load dump in vehicle electrical systems. |
| TJ max | +150 °C - Enables operation in under-hood environments without derating in most mounting configurations. |
| MSL Level | Level 1 (260 °C peak) - Supports standard lead-free reflow without moisture sensitivity concerns. |
Pinout & Package
DO-215AA (SMBG) surface-mount package: 2-terminal, gull-wing leads, matte tin-plated, RoHS-compliant, AEC-Q101 qualified. Cathode indicated by band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-impedance return path; forms clamping loop with cathode. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 24 V supply rail); conducts surge current to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
| Glass passivated junction | Ensures long-term VBR stability and low parameter drift over 15+ years in harsh environments. |
| 600 W peak pulse power | Meets ISO 16750-2 and ISO 7637-2 transient immunity requirements for Class III/IV vehicles. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up in protected ICs. |
| MSL Level 1 | Eliminates bake-out requirement prior to SMT assembly, lowering manufacturing cost and cycle time. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump transients up to 35 V and ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and upstream fuse or DC-DC converter input. Use Value: Limits clamped voltage to 42.1 V, keeping downstream 40 V-rated MOSFETs and regulators within safe SOA. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector entry point on 0–10 V or 4–20 mA signal lines. Use Value: Sub-1 µA leakage at 26 V prevents measurement offset; fast response preserves signal integrity during 8 kV contact ESD. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) against surges on 48 V DC input derived from IEEE 802.3af/at PSEs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus after isolation transformer and rectifier. Use Value: 600 W rating handles repetitive lightning-induced surges; AEC-Q101 grade ensures extended field life beyond telecom standards. |
Use Scenario: Suppressing flyback voltage spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp commutation spikes before reaching MCU GPIO or driver ICs. Use Value: 100 A IFSM withstands repeated 200 ms stall currents; DO-215AA footprint allows direct replacement of legacy SMB packages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26AHE3/5B | Same VWM (26 V), identical DO-215AB (SMBJ) package but 1.0 mm wider body; 600 W rating, slightly higher VC (43.5 V). | Higher thermal mass improves surge repetition capability; less suitable for ultra-dense layouts due to larger footprint. | Select when board space permits and higher thermal inertia is needed for frequent transient exposure. |
| SMCJ26AHE3/5B | Same VWM, DO-214AB (SMC) package; 1500 W rating, VC = 42.5 V at 35.3 A - significantly higher surge capacity. | Designed for primary-level protection where higher energy absorption is required (e.g., main vehicle battery feed). | Choose for front-end protection where SMBG26CHE3/5B may be used as secondary-stage clamp downstream of bulk suppressors. |
Compared with SMBJ26AHE3/5B and SMCJ26AHE3/5B, the SMBG26CHE3/5B offers optimal balance of compact DO-215AA footprint, AEC-Q101 qualification, and 600 W capability - making it ideal for space-constrained, high-reliability secondary protection in automotive and industrial control modules.
Availability
SMBG26CHE3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom power feeds requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBG26CHE3/5B 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, and protection devices with emphasis on automotive, industrial, and computing applications.
The SMBG series was developed specifically for AEC-Q101-compliant, surface-mount transient suppression in space-constrained automotive ECUs and industrial controllers where reliability under thermal and mechanical stress is critical.
FAQ
What is the clamping voltage of SMBG26CHE3/5B at its rated peak pulse current?
The SMBG26CHE3/5B has a maximum clamping voltage (VC) of 42.1 V at 14.3 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per JEDEC standards and guarantees that protected circuitry remains below 43 V during standardized surge events - essential for safeguarding 36 V-rated components in 24 V systems.
Is SMBG26CHE3/5B suitable for automotive applications?
Yes, SMBG26CHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junction, MSL Level 1 moisture sensitivity, and operation from –55 °C to +150 °C - meeting requirements for engine control units, body electronics, and ADAS power domains per ISO 16750-2.
What does the "HE3" suffix indicate in SMBG26CHE3/5B?
The "HE3" suffix in SMBG26CHE3/5B denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes this automotive-grade variant from commercial "E3" versions (e.g., SMBG26AE3/5B), which lack AEC-Q101 validation and Class 2 tin whisker mitigation.
How does SMBG26CHE3/5B differ from SMBJ26AHE3/5B?
SMBG26CHE3/5B uses the DO-215AA (SMBG) package (body width 3.94 mm), while SMBJ26AHE3/5B uses DO-215AB (SMBJ) (body width 4.57 mm). Both share 26 V VWM, 600 W rating, and AEC-Q101 qualification, but SMBG26CHE3/5B offers tighter board space utilization - critical for modern ADAS camera modules and compact ECUs.
What is the maximum reverse leakage current for SMBG26CHE3/5B at rated standoff voltage?
The SMBG26CHE3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 26 V standoff voltage (VWM) and 25 °C ambient temperature. This low leakage ensures minimal power loss in always-on automotive circuits and avoids signal distortion in precision analog sensor paths.
SMBG26CHE3/5B 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)
SMBG26CHE3/5B FAQ
1.How can I place an order for SMBG26CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG26CHE3/5B 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 SMBG26CHE3/5B reliable?
The price and inventory of SMBG26CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG26CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG26CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG26CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG26CHE3/5B?
SMBG26CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG26CHE3/5B 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 SMBG26CHE3/5B?
For technical support, including SMBG26CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG26CHE3/5B requirements.
6.How does Aetrix verify that SMBG26CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG26CHE3/5B 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 SMBG26CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG26CHE3/5B?
All SMBG26CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG26CHE3/5B, 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 SMBG26CHE3/5B part is unused and in its original packaging.
Return procedure for SMBG26CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG26CHE3/5B Tags
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