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Vishay General Semiconductor - Diodes Division SMBG15CAHE3/52
- Part No.:
- SMBG15CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG15CAHE3/52.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,426
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Product details
Overview
SMBG15CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of signal and power lines. It features a 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), clamping voltage of 24.4 V at 24.6 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG15CAHE3/52 datasheet, SMBG15CAHE3/52 pinout, SMBG15CAHE3/52 application, or SMBG15CAHE3/52 equivalent, key selection criteria include bidirectional surge handling capability, low clamping ratio (VC/VBR ≈ 1.4), junction temperature range (−55 °C to +150 °C), and RoHS-compliant, halogen-free AEC-Q101 qualified construction.
Technical Context
This TVS diode operates symmetrically in both directions, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports effective energy diversion during fast transients.
The device is rated for 600 W peak pulse power under standardized 10/1000 µs waveform conditions with 0.01% duty cycle, and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) on 5.0 mm × 5.0 mm copper pads - critical for sustained surge resilience in compact PCB layouts.
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 - defines reliable conduction onset window for bidirectional surge suppression |
| VC @ IPPM | 24.4 V at 24.6 A - clamped voltage during 600 W transient, limiting downstream stress |
| PPPM | 600 W - peak surge power handling per 10/1000 µs waveform, enabling IEC 61000-4-5 Level 4 compliance |
| IPPM | 24.6 A - peak pulse current corresponding to VC, used for PCB trace sizing and layout margining |
| TJ range | −55 °C to +150 °C - full automotive ambient operation without derating loss |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements (HTOL, TC, HTRB, etc.) |
Pinout & Package
Package: SMBG (DO-215AA) - surface-mount, low-profile gull-wing leaded case with matte tin-plated terminals, MSL Level 1 (260 °C peak reflow), UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking; either terminal serves as anode or cathode depending on transient polarity - enables single-device protection of AC or differential lines |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports high-energy transients (e.g., ISO 7637-2 Pulse 5a) without degradation when mounted per recommended pad layout |
| AEC-Q101 qualification | Validated for under-hood and chassis-mounted automotive applications requiring long-term reliability under thermal cycling and humidity |
| Low clamping voltage (24.4 V) | Provides 63% overvoltage margin above VWM, protecting 24 V system ICs with tight absolute maximum ratings |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA) across temperature and lifetime |
| RoHS & halogen-free (HE3 suffix) | Complies with automotive environmental standards (e.g., JESD201 Class 2 whisker resistance, material declaration per Vishay Doc. 99912) |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in engine control units (ECUs) and body control modules against load dump and inductive switching spikes. IC Role / Device Role: Bidirectional clamping element placed upstream of DC/DC converters and microcontrollers. Use Value: Clamps transients to ≤24.4 V, preventing damage to 36 V-rated downstream regulators and ensuring ASIL-B functional safety integrity. | Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC I/O modules exposed to field wiring surges. IC Role / Device Role: First-line transient shunt on differential or single-ended sensor traces before signal conditioning amplifiers. Use Value: Limits induced voltage excursions to <25 V, preserving amplifier input stage integrity and maintaining ±10 V common-mode range compliance. |
| Telecom Data Line Surge Suppression | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485/RS-422 bus lines in base station remote radio units from lightning-induced surges. IC Role / Device Role: Symmetric TVS across differential pairs (A/B) and shield ground, leveraging bidirectional response. Use Value: Maintains signal integrity by clamping common-mode transients within 24.4 V while adding <0.5 pF capacitance per line (typical at 0 V bias). | Use Scenario: Hardening USB 2.0 D+/D− lines in automotive infotainment head units against human-body-model (HBM) and IEC 61000-4-2 contact discharge. IC Role / Device Role: Low-capacitance bidirectional clamp integrated into USB connector footprint. Use Value: Provides 30 kV air/15 kV contact ESD immunity without distorting 480 Mbps data eye due to minimal junction capacitance (~100 pF at 0 V). |
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/VBR/VC, but lower PPPM = 600 W (same rating), different package: SMB (DO-214AA), slightly larger footprint and higher RθJA (120 °C/W) | Less suitable for space-constrained automotive modules where SMBG's smaller DO-215AA outline saves board area | Select SMBG15CAHE3/52 when PCB real estate or thermal performance on small pads is critical. |
| SMCJ15CAHE3_A/H | Higher PPPM = 1500 W, same VWM/VBR, larger SMC (DO-214AB) package, higher IPPM = 61.1 A, VC = 24.4 V | Targeted at higher-energy threats (e.g., ISO 16750-2 long-duration surges); over-specified for standard 600 W requirements | Choose SMBG15CAHE3/52 for cost-optimized, footprint-efficient 600 W protection where 1500 W headroom is unnecessary. |
Compared with SMBJ15CA-E3/52 and SMCJ15CAHE3_A/H, SMBG15CAHE3/52 delivers identical electrical protection performance in a smaller, thermally superior DO-215AA package with AEC-Q101 qualification - making it optimal for next-generation automotive ECUs and industrial edge nodes where size, thermal margin, and qualification rigor are jointly constrained.
Availability
SMBG15CAHE3/52 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom data line surge suppression, and consumer USB port ESD mitigation requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBG15CAHE3/52 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, efficiency, and application-specific validation.
The SMBG series is engineered for high-reliability transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-profile packaging, and precise clamping performance for demanding 12 V/24 V systems.
FAQ
What does the "CA" suffix indicate in SMBG15CAHE3/52?
The "CA" suffix denotes a bidirectional configuration - meaning SMBG15CAHE3/52 conducts and clamps symmetrically for both positive and negative transients, with no polarity marking required. This distinguishes it from unidirectional variants (e.g., SMBG15A) that feature a cathode band and conduct only in reverse bias. The CA version is ideal for AC-coupled or differential signal protection where polarity reversal is possible.
Is SMBG15CAHE3/52 suitable for automotive applications?
Yes, SMBG15CAHE3/52 is explicitly AEC-Q101 qualified per Vishay documentation (Rev. 09-Jan-2024, Doc. 88456), confirming its suitability for automotive use cases including engine control, body electronics, and ADAS sensor interfaces. Its −55 °C to +150 °C operating range, glass-passivated junction, and halogen-free HE3 construction meet stringent automotive reliability and environmental requirements.
What is the clamping voltage of SMBG15CAHE3/52 and how is it measured?
The clamping voltage (VC) of SMBG15CAHE3/52 is 24.4 V, measured at its peak pulse current (IPPM) of 24.6 A under a standardized 10/1000 µs double-exponential surge waveform. This value reflects the maximum voltage imposed on protected circuitry during a 600 W transient event and is verified per ANSI/IEEE C62.35 definitions - critical for validating downstream component voltage margins.
How does the SMBG (DO-215AA) package compare to SMB (DO-214AA) in thermal performance?
The SMBG (DO-215AA) package of SMBG15CAHE3/52 offers lower thermal resistance than SMB (DO-214AA): typical RθJA is 100 °C/W versus ~120 °C/W for SMBJ variants, when mounted on identical 5.0 mm × 5.0 mm copper pads. This 17% improvement enhances sustained surge handling and reduces junction temperature rise during repetitive transients - a key advantage in thermally dense automotive modules.
Does SMBG15CAHE3/52 require orientation during PCB placement?
No, SMBG15CAHE3/52 does not require specific orientation because it is a bidirectional TVS diode - both terminals are functionally identical, and there is no cathode band or polarity marking. This simplifies automated assembly and eliminates risk of reverse installation, unlike unidirectional variants such as SMBG15A which must be placed with the band aligned to the cathode net.
SMBG15CAHE3/52 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:
- 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)
SMBG15CAHE3/52 FAQ
1.How can I place an order for SMBG15CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG15CAHE3/52 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 SMBG15CAHE3/52 reliable?
The price and inventory of SMBG15CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG15CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG15CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG15CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG15CAHE3/52?
SMBG15CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG15CAHE3/52 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 SMBG15CAHE3/52?
For technical support, including SMBG15CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG15CAHE3/52 requirements.
6.How does Aetrix verify that SMBG15CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG15CAHE3/52 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 SMBG15CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG15CAHE3/52?
All SMBG15CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG15CAHE3/52, 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 SMBG15CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG15CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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