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Vishay General Semiconductor - Diodes Division SMBG26CAHE3/5B
- Part No.:
- SMBG26CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG26CAHE3/5B.pdf
- Description:
- TVS DIODE 26VWM 42.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,275
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Product details
Overview
SMBG26CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 26 V standoff voltage (VWM), 28.9–31.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 42.1 V at 14.3 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG26CAHE3/5B datasheet, SMBG26CAHE3/5B pinout, SMBG26CAHE3/5B application, or SMBG26CAHE3/5B equivalent, this device is selected for high-reliability bidirectional surge suppression in automotive sensor interfaces, industrial I/O lines, and telecom power rails where low clamping voltage, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR, IPPM, and VC specifications in forward and reverse directions. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable clamping performance under repetitive transients.
Thermal design is supported by RθJA = 100 °C/W (on 5.0 mm × 5.0 mm copper pads) and TJ(max) = +150 °C, enabling sustained operation in under-hood automotive environments. The device meets UL 497B recognition and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 24 V automotive systems. |
| VBR (min/max) | 28.9 V / 31.9 V at 1 mA - Confirmed breakdown threshold range ensures reliable triggering without premature conduction. |
| VC @ IPPM | 42.1 V at 14.3 A - Clamping voltage limits downstream IC stress during 600 W transient events (10/1000 µs). |
| PPPM | 600 W - Peak pulse power rating validated per IEC 61000-4-5; supports repetitive surges at 0.01% duty cycle. |
| ID @ VWM | <1.0 µA - Ultra-low leakage preserves signal integrity on high-impedance sensor or data lines. |
| TJ(max) | +150 °C - Enables placement near heat sources in engine control units and ADAS modules. |
| AEC-Q101 | Qualified - Validated for automotive applications including temperature cycling, HTRB, and ESD testing per stress test plan. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing leads, matte tin-plated terminals compliant with J-STD-002 and JESD22-B102. No polarity marking on bidirectional variants.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts surge energy to ground when voltage falls below –VBR; symmetrical with cathode for bidirectional clamping. |
| Cathode | Transient current entry (positive half-cycle) | Conducts surge energy to ground when voltage exceeds +VBR; functionally identical to anode in bidirectional configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VC, and IPPM in both directions enables single-device protection of AC-coupled or floating signal paths. |
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, high-temp reverse bias, and mechanical shock per JEDEC standards. |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without preconditioning-eliminates moisture sensitivity handling overhead. |
| Glass-passivated junction | Ensures long-term stability of leakage current and breakdown voltage across 15-year automotive service life. |
| UL 497B recognition | Meets Underwriters Laboratories requirements for telecom and industrial surge protectors (File E136766). |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
|
Use Scenario: Protecting analog outputs of pressure/temperature sensors connected to 24 V vehicle battery rail. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor output and microcontroller ADC input to clamp load-dump and ISO 7637-2 pulses. Use Value: 42.1 V clamping ensures MCU input stays within absolute maximum rating during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding CANH/CANL lines in industrial gateways exposed to inductive switching noise. IC Role / Device Role / Timing Role: Dual-channel TVS (one per line) suppressing common-mode transients while preserving signal rise/fall times. Use Value: Sub-1 ns response and 2.0 pF typical capacitance prevent CAN bit error rate degradation at 1 Mbps. |
| Telecom Power Input | Smart Meter RS-485 Port |
|
Use Scenario: Input stage protection for PoE-powered telecom equipment subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input, upstream of DC-DC converter, absorbing 600 W line-to-ground transients. Use Value: 600 W rating and 100 °C/W thermal resistance allow self-cooling without heatsink in compact enclosures. |
Use Scenario: Transient suppression on differential RS-485 bus lines in utility smart meters installed in outdoor substations. IC Role / Device Role / Timing Role: Bidirectional TVS across A/B lines and to ground, meeting IEC 61000-4-5 Level 4 (4 kV) immunity. Use Value: AEC-Q101 qualification ensures long-term reliability under thermal cycling from -40 °C to +85 °C ambient. |
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 | Same VWM/VBR/VC, but SMB (DO-214AA) package; RθJA = 110 °C/W; no AEC-Q101 qualification. | Limited to industrial/commercial use; not approved for automotive ECUs or ADAS modules. | Select SMBJ26CA only for cost-sensitive non-automotive designs where thermal margin allows higher RθJA. |
| SMAJ26CA | Lower PPPM = 400 W; VC = 42.8 V at 9.4 A; SMA (DO-214AC) package; RθJA = 140 °C/W. | Insufficient for 600 W IEC 61000-4-5 Level 4 tests; unsuitable for 24 V automotive load-dump protection. | Choose SMAJ26CA only for space-constrained consumer devices with lower surge exposure (e.g., USB-C PD adapters). |
Compared with SMBJ26CA and SMAJ26CA, SMBG26CAHE3/5B delivers superior thermal performance (RθJA = 100 °C/W), automotive qualification, and full 600 W surge handling-making it the only option qualified for under-hood placement in modern vehicles.
Availability
SMBG26CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus hardening, and telecom power input surge suppression requiring stable component supply across multi-year production cycles.
Supply support for SMBG26CAHE3/5B 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMBG series was engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive environments, balancing low clamping voltage, high surge capability, and reflow-ready packaging.
FAQ
What does the "HE3" suffix indicate in SMBG26CAHE3/5B?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads. It confirms compliance with automotive reliability standards, including temperature cycling, high-temperature reverse bias, and mechanical shock testing per JEDEC JESD47. SMBG26CAHE3/5B is fully qualified for use in engine control units and ADAS modules.
Is SMBG26CAHE3/5B unidirectional or bidirectional?
SMBG26CAHE3/5B is a bidirectional transient voltage suppressor, meaning it provides symmetrical clamping for both positive and negative transients. Its electrical characteristics-including VBR, VC, and IPPM-are identical in both directions, eliminating the need for polarity-aware layout. This makes SMBG26CAHE3/5B ideal for protecting AC-coupled or floating signal lines like CAN bus or RS-485.
What is the clamping voltage of SMBG26CAHE3/5B and how is it verified?
The clamping voltage (VC) of SMBG26CAHE3/5B is 42.1 V at 14.3 A, measured under standardized 10/1000 µs waveform conditions per IEC 61000-4-5. This value is guaranteed across the full operating temperature range (–55 °C to +150 °C) and confirmed via production lot testing. SMBG26CAHE3/5B maintains this clamping performance without degradation over its rated lifetime.
Can SMBG26CAHE3/5B be used in lead-free reflow processes?
Yes, SMBG26CAHE3/5B is rated MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C without preconditioning. Its gull-wing SMBG (DO-215AA) package and matte tin terminations meet J-STD-002 solderability requirements, ensuring reliable wetting and joint formation in standard lead-free SMT assembly lines.
How does SMBG26CAHE3/5B differ from the SMBJ26CA variant?
SMBG26CAHE3/5B uses the larger SMBG (DO-215AA) package with lower thermal resistance (RθJA = 100 °C/W vs. 110 °C/W for SMBJ), and carries AEC-Q101 qualification-unlike SMBJ26CA. Both share identical VWM, VBR, and VC, but only SMBG26CAHE3/5B is approved for automotive under-hood deployment. SMBG26CAHE3/5B also features UL 497B recognition (File E136766), which SMBJ26CA lacks.
SMBG26CAHE3/5B 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 14.3A
- 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)
SMBG26CAHE3/5B FAQ
1.How can I place an order for SMBG26CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG26CAHE3/5B 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 SMBG26CAHE3/5B reliable?
The price and inventory of SMBG26CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG26CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG26CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG26CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG26CAHE3/5B?
SMBG26CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG26CAHE3/5B 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 SMBG26CAHE3/5B?
For technical support, including SMBG26CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG26CAHE3/5B requirements.
6.How does Aetrix verify that SMBG26CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG26CAHE3/5B 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 SMBG26CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG26CAHE3/5B?
All SMBG26CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG26CAHE3/5B, 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 SMBG26CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG26CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG26CAHE3/5B Tags
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