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Vishay General Semiconductor - Diodes Division SMBG15CAHE3/5B
- Part No.:
- SMBG15CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG15CAHE3/5B.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,503
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Product details
Overview
SMBG15CAHE3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping voltage transients on signal or power lines. It features 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), and clamps to ≤24.4 V at 24.6 A peak pulse current - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and inductive switching surges.
For engineers reviewing the SMBG15CAHE3/5B datasheet, SMBG15CAHE3/5B pinout, SMBG15CAHE3/5B application, or SMBG15CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C max junction temperature, low leakage (<1.0 μA at VWM), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protection element in both polarities, leveraging an avalanche breakdown mechanism to divert surge energy away from downstream ICs. Its bidirectional symmetry ensures identical electrical behavior regardless of voltage polarity, eliminating need for orientation-aware layout.
Designed for fast response (<1 ns), it exhibits low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.39), enabling robust suppression of 10/1000 μs transients up to 600 W without thermal runaway. The glass-passivated junction and MSL Level 1 rating support high-reliability reflow assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - guaranteed avalanche initiation range under standardized test conditions |
| VC @ IPPM | 24.4 V at 24.6 A - clamped voltage during 600 W transient, defining worst-case stress on protected circuit |
| PPPM | 600 W - peak surge power handling with 10/1000 μs waveform, duty cycle ≤ 0.01 % |
| ID @ VWM | <1.0 μA - minimal leakage current at rated stand-off voltage, critical for low-power sensor biasing |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount gull-wing lead frame with matte tin-plated terminals; meets UL 94 V-0, J-STD-002 solderability, and JESD 201 Class 2 whisker resistance. No polarity marking for bidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward conduction | One terminal of symmetrical bidirectional structure; no fixed polarity - functions as cathode when opposite terminal is positive |
| Cathode | Current exit point in forward conduction | Second terminal of symmetrical structure; interchangeable with Anode depending on transient polarity |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables protection against severe ISO 7637-2 Load Dump and IEC 61000-4-5 surge events in automotive ECUs |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, ADAS sensors, and body electronics |
| Low profile SMBG package | 0.255" × 0.155" footprint with 0.030" height - fits space-constrained PCB layouts while maintaining thermal performance |
| Glass passivated junction | Improves long-term stability and moisture resistance versus epoxy-passivated alternatives, critical for industrial field deployments |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning, reducing manufacturing complexity |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed directly at connector or IC input pins to shunt transients before reaching sensitive front-end circuitry. Use Value: Maintains signal integrity by limiting clamped voltage to 24.4 V while surviving repeated 600 W surges per AEC-Q101 stress protocols. | Use Scenario: Safeguarding PLC digital input modules and analog acquisition channels exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Bidirectional transient suppressor across differential signal pairs or supply rails to absorb both positive and negative polarity spikes. Use Value: Eliminates need for dual unidirectional devices, simplifying BOM and layout while delivering consistent 16.7–18.5 V breakdown in either direction. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Shielding Ethernet PHYs and PoE controllers from lightning-induced surges on RJ45 ports in enterprise switches and IP cameras. IC Role / Device Role / Timing Role: Primary-level surge protector mounted at board edge, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: Fast <1 ns response captures initial surge edge, while 600 W rating handles multi-kV induced transients defined in IEC 61000-4-5 Level 4. | Use Scenario: Input-stage overvoltage protection in AC-DC adapters and USB-C PD chargers subjected to mains transients and hot-plug events. IC Role / Device Role / Timing Role: Stand-off clamp between L/N and earth or across DC output rails to prevent damage during brownout recovery or capacitor discharge. Use Value: 15 V VWM aligns with 12 V nominal DC outputs, ensuring no conduction during normal operation while triggering reliably at 16.7 V minimum breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA-E3/52 | Same VWM (15 V), same SMB package, but lower PPPM (600 W vs. SMBJ's 600 W - identical rating), slightly higher VC (24.4 V vs. SMBJ15CA's 24.4 V - same), different MSL level (MSL 1 vs. SMBJ's MSL 1) | No functional difference in clamping or surge handling; differs only in packaging format (7" reel vs. 13") and base P/N suffix encoding | Select SMBG15CAHE3/5B when AEC-Q101 qualification and 13" reel logistics are required; SMBJ15CA-E3/52 suits non-automotive volume production with smaller reels. |
| 1.5KE15CA | Higher VWM (15 V), same bidirectionality, but DO-201 package (larger footprint), higher thermal resistance (RθJA ≈ 150 °C/W vs. SMBG's 100 °C/W), and same 600 W rating | Not suitable for high-density SMT layouts; requires larger pad area and manual or wave-solder process | Choose SMBG15CAHE3/5B for automated SMT lines and space-constrained designs; 1.5KE15CA remains viable only where legacy through-hole compatibility or higher single-pulse energy margin is prioritized. |
Compared with SMBJ15CA-E3/52 and 1.5KE15CA, SMBG15CAHE3/5B offers identical electrical protection performance in a smaller, AEC-Q101-qualified SMBG package optimized for automotive and industrial SMT assembly - making it the preferred choice where board space, reliability certification, and reflow compatibility are critical.
Availability
SMBG15CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply across extended production lifecycles.
Supply support for SMBG15CAHE3/5B 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, efficiency, and application-specific optimization.
The SMBG series was developed to deliver high-power transient suppression in compact surface-mount packages for automotive and industrial systems demanding AEC-Q101 compliance and robust surge immunity - targeting ECU, sensor module, and power interface applications.
FAQ
What is the clamping voltage of SMBG15CAHE3/5B at its rated peak pulse current?
The SMBG15CAHE3/5B clamps to a maximum of 24.4 V at its peak pulse current of 24.6 A (corresponding to 600 W with a 10/1000 μs waveform). This value is measured under standardized test conditions per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMBG15CAHE3/5B suitable for automotive applications?
Yes, SMBG15CAHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junctions, MSL Level 1 reflow compatibility, and validation across temperature cycling, high-temperature reverse bias, and ESD tests - making SMBG15CAHE3/5B appropriate for engine control units, ADAS sensors, and body electronics.
How does the bidirectional design of SMBG15CAHE3/5B affect its circuit implementation?
The bidirectional design of SMBG15CAHE3/5B means it provides symmetrical clamping in both voltage polarities without polarity marking or orientation constraints. This allows SMBG15CAHE3/5B to be placed across any two nodes - such as differential signal lines or supply/return rails - without concern for anode/cathode alignment, simplifying layout and reducing assembly errors.
What is the maximum junction temperature rating for SMBG15CAHE3/5B?
The SMBG15CAHE3/5B has a maximum junction temperature (TJ max.) of +150 °C, enabling reliable operation in high-ambient environments such as under-hood automotive locations or enclosed industrial enclosures. This rating is supported by its thermal resistance (RθJA = 100 °C/W) when mounted on 5.0 mm × 5.0 mm copper pads per datasheet guidelines.
Does SMBG15CAHE3/5B require special PCB layout considerations?
Yes - to achieve rated 600 W surge capability, SMBG15CAHE3/5B must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. Reducing pad size degrades thermal dissipation and reduces actual surge current handling, so proper layout is essential for SMBG15CAHE3/5B to meet its published specifications.
SMBG15CAHE3/5B 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 24.6A
- 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)
SMBG15CAHE3/5B FAQ
1.How can I place an order for SMBG15CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG15CAHE3/5B 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 SMBG15CAHE3/5B reliable?
The price and inventory of SMBG15CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG15CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG15CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG15CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG15CAHE3/5B?
SMBG15CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG15CAHE3/5B 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 SMBG15CAHE3/5B?
For technical support, including SMBG15CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG15CAHE3/5B requirements.
6.How does Aetrix verify that SMBG15CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG15CAHE3/5B 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 SMBG15CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG15CAHE3/5B?
All SMBG15CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG15CAHE3/5B, 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 SMBG15CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG15CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG15CAHE3/5B Tags
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