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Vishay General Semiconductor - Diodes Division SMBG24CAHE3/5B
- Part No.:
- SMBG24CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG24CAHE3/5B.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,368
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Product details
Overview
SMBG24CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection on signal and power lines. It features 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 38.9 V at 15.4 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG24CAHE3/5B datasheet, SMBG24CAHE3/5B pinout, SMBG24CAHE3/5B application, or SMBG24CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.4), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS operates symmetrically in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1.0 µA at 24 V) and fast response time (<1 ns), while the low incremental surge resistance supports effective energy diversion during ESD and lightning-induced transients.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 100 °C/W (on 5.0 mm × 5.0 mm pads) and RθJL = 20 °C/W, making it suitable for high-reliability automotive ECUs and industrial controllers where thermal management under repetitive surge events is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above system operating voltage. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage during 600 W transient; limits downstream IC stress to safe levels. |
| PPPM | 600 W (10/1000 µs) - Peak surge power handling; meets IEC 61000-4-5 Level 3 (1 kV line-to-line) requirements. |
| IPPM | 15.4 A - Peak pulse current capability; determines minimum trace width and PCB layout robustness needed. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive applications per stress test standard; supports PPAP documentation. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H), matte tin-plated leads, RoHS-compliant, MSL Level 1 (260 °C reflow peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical junction; accepts surge current in either direction during overvoltage event. |
| Cathode | Transient current entry (positive polarity) | Second terminal of symmetrical junction; completes bidirectional conduction path with Anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., CAN, RS-485), and ungrounded power rails without polarity concerns. |
| 600 W peak pulse power | Supports IEC 61000-4-5 surge immunity up to 1 kV line-to-line on 2 Ω source impedance with minimal PCB area. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage current across temperature and humidity stress conditions. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules requiring zero-defect field performance. |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow profile (peak 260 °C), eliminating bake-out requirements in production. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting high-speed CAN FD transceivers against load dump and ESD in vehicle door modules and battery management systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across CANH/CANL differential pair to clamp transients while preserving signal integrity. Use Value: Limits clamped voltage to ≤38.9 V, preventing damage to ISO 11898-2 compliant transceivers rated for ±40 V common-mode range. | Use Scenario: Shielding analog outputs (4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Standoff protection element on sensor output traces, absorbing inductive kickback from solenoid actuation nearby. Use Value: Withstands 15.4 A surge current and maintains <1.0 µA leakage at 24 V supply, ensuring measurement accuracy remains unaffected during normal operation. |
| Telecom DSL Line Interface | Consumer Appliance Motor Drive Inputs |
Use Scenario: Safeguarding ADSL/VDSL line drivers and receivers from lightning-induced surges on outdoor telephone wiring. IC Role / Device Role / Timing Role: Primary protection device mounted at board edge, upstream of GDT or secondary TVS stages. Use Value: Fast <1 ns response captures initial surge edge; 600 W rating handles multi-kV induced transients per ITU-T K.20/K.21 standards. | Use Scenario: Protecting microcontroller GPIOs and gate drivers connected to brushed DC motor commutation circuits in smart home appliances. IC Role / Device Role / Timing Role: Clamp diode across motor terminals or driver outputs to suppress back-EMF spikes exceeding MCU voltage ratings. Use Value: 24 V VWM aligns with 24 V motor supply rails; 38.9 V clamping prevents latch-up in 3.3 V/5 V logic interfaces sharing same ground plane. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | Same VWM/VBR/VC, but rated for 600 W with 10/1000 µs waveform and not AEC-Q101 qualified. | Targeted at industrial/commercial designs lacking automotive qualification requirements. | Select SMBJ24CA when AEC-Q101 is not mandated and cost optimization is prioritized. |
| SMCJ24CA | Higher 1500 W PPPM, larger SMC (DO-214AB) package, identical VWM/VBR specs. | Suitable for higher-energy surge environments (e.g., AC mains input, PoE injectors) where PCB space allows larger footprint. | Choose SMCJ24CA when system-level surge testing exceeds IEC 61000-4-5 Level 4 and thermal mass must be increased. |
Compared with SMBJ24CA, SMBG24CAHE3/5B provides automotive-grade reliability without sacrificing clamping performance; versus SMCJ24CA, it delivers equivalent protection in 40 % less PCB area but with lower single-pulse energy capacity.
Availability
SMBG24CAHE3/5B is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom line protection, and consumer appliance motor drive circuits requiring stable component supply and AEC-Q101 compliance.
Supply support for SMBG24CAHE3/5B 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, MOSFETs, and protection devices with emphasis on reliability, precision, and automotive-grade validation.
The SMBG series was engineered specifically for high-volume, space-constrained applications demanding AEC-Q101 qualification, low-profile packaging, and repeatable transient suppression performance in harsh environments.
FAQ
What is the polarity configuration of SMBG24CAHE3/5B?
SMBG24CAHE3/5B is a bidirectional TVS diode, meaning it functions identically in both forward and reverse bias directions. It has no cathode band marking and is intended for use across differential or AC-coupled signal lines such as CAN, RS-485, or telecom interfaces where polarity reversal may occur. This symmetry is confirmed in the Vishay datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS" and electrical characteristics table.
Does SMBG24CAHE3/5B meet automotive qualification standards?
Yes, SMBG24CAHE3/5B is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet under "MECHANICAL DATA" and "RATINGS AND CHARACTERISTICS CURVES". The HE3 suffix denotes RoHS compliance and AEC-Q101 qualification, making SMBG24CAHE3/5B suitable for automotive powertrain, body electronics, and ADAS applications requiring zero-defect reliability.
What is the maximum clamping voltage for SMBG24CAHE3/5B under surge conditions?
The maximum clamping voltage (VC) for SMBG24CAHE3/5B is 38.9 V at 15.4 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is specified in the "ELECTRICAL CHARACTERISTICS" table of the Vishay document 88456 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Can SMBG24CAHE3/5B be used in automated SMT assembly processes?
Yes, SMBG24CAHE3/5B is optimized for automated placement: it uses an SMBG (DO-215AA) package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, meets MSL Level 1 (260 °C peak reflow), and is supplied in 13-inch tape-and-reel format (5B packaging code). These attributes are documented in the "MECHANICAL DATA" and "ORDERING INFORMATION" sections of the Vishay datasheet.
How does the thermal performance of SMBG24CAHE3/5B affect PCB layout?
SMBG24CAHE3/5B has RθJA = 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as defined in the "THERMAL CHARACTERISTICS" table. To maintain TJ ≤ 150 °C under repetitive surges, designers must allocate adequate copper area and consider thermal vias-especially in automotive under-hood applications where ambient temperatures exceed 85 °C. The datasheet specifies this pad layout as minimum recommended.
SMBG24CAHE3/5B 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 15.4A
- 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)
SMBG24CAHE3/5B FAQ
1.How can I place an order for SMBG24CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG24CAHE3/5B 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 SMBG24CAHE3/5B reliable?
The price and inventory of SMBG24CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG24CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG24CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG24CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG24CAHE3/5B?
SMBG24CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG24CAHE3/5B 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 SMBG24CAHE3/5B?
For technical support, including SMBG24CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG24CAHE3/5B requirements.
6.How does Aetrix verify that SMBG24CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG24CAHE3/5B 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 SMBG24CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG24CAHE3/5B?
All SMBG24CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG24CAHE3/5B, 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 SMBG24CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG24CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG24CAHE3/5B Tags
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