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Vishay General Semiconductor - Diodes Division SMBG24CAHE3/52
- Part No.:
- SMBG24CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG24CAHE3/52.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,222
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Product details
Overview
SMBG24CAHE3/52 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 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 SMBG24CAHE3/52 datasheet, SMBG24CAHE3/52 pinout, SMBG24CAHE3/52 application, or SMBG24CAHE3/52 equivalent, key selection criteria include bidirectional clamping behavior, low clamping ratio (VC/VBR ≈ 1.4), junction temperature range (−55 °C to +150 °C), RoHS-compliant AEC-Q101 qualification, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This bidirectional 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 VWM) and fast response time (<1 ns), critical for suppressing ESD and lightning-induced transients per IEC 61000-4-2/4-5.
The device uses a planar silicon avalanche structure optimized for low incremental surge resistance and repeatable clamping performance under repetitive 0.01% duty-cycle surges. Thermal resistance (RθJA = 100 °C/W) and RθJL = 20 °C/W support reliable operation in compact PCB layouts with minimal copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before conduction begins; defines safe signal swing margin. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Ensures consistent avalanche initiation across production lots; tight tolerance supports predictable protection threshold. |
| 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 energy handling capacity; validates compliance with ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3. |
| ID @ VWM | <1.0 µA - Ultra-low leakage preserves signal integrity in high-impedance sensor or communication lines. |
| TJ Range | −55 °C to +150 °C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment. |
| Qualification | AEC-Q101 qualified - Confirms reliability for automotive electronics per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002/JESD 22-B102; meets UL 94 V-0, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional mode | No polarity marking; terminals are interchangeable for AC or differential line protection. |
| Cathode | Current exit terminal in forward bias; symmetrical with anode in bidirectional mode | Unmarked device body confirms bidirectional functionality-no cathode band present. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports repeated surge events in automotive load-dump and inductive switching environments without degradation. |
| AEC-Q101 qualification | Validates long-term reliability under thermal cycling, humidity, and high-temperature reverse bias stress for automotive ECUs and ADAS modules. |
| Glass-passivated junction | Ensures stable VBR and low leakage across temperature and lifetime, critical for precision sensor interface protection. |
| Low-profile SMBG package | Enables high-density layout on space-constrained PCBs while maintaining thermal performance via 0.2" × 0.2" copper pad recommendation. |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without baking, reducing manufacturing overhead in high-volume SMT lines. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LIN/CAN bus power rails and microcontroller supply inputs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between VBAT and GND, absorbing surge energy before it reaches PMIC or MCU. Use Value: Limits clamped voltage to 38.9 V, well below typical 40 V absolute maximum ratings of automotive PMICs, preventing latch-up or permanent damage. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA current loops) and digital I/O of PLC analog input modules from field-wiring induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across signal and return lines, providing sub-1 ns response to fast-rising transients from relay coil switching or ESD. Use Value: Ultra-low leakage (<1 µA) avoids loading high-impedance sensor circuits, preserving measurement accuracy while delivering 600 W surge immunity. |
| Telecom Data Line Protection | Consumer USB Port ESD Suppression |
Use Scenario: Shielding RS-485/RS-422 differential pairs in base station remote radio units exposed to lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Bidirectional TVS placed across A/B lines and referenced to local ground, clamping common-mode and differential transients simultaneously. Use Value: Symmetrical VBR (26.7–29.5 V) ensures balanced clamping on both polarities, maintaining signal integrity during asymmetric surge events. | Use Scenario: Adding secondary-level ESD protection on USB 2.0 D+/D− lines behind primary protection, meeting IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF at 0 V) bidirectional clamp placed directly at connector, minimizing stub length. Use Value: Clamps ESD pulses to ≤38.9 V within nanoseconds, protecting USB transceivers rated for 3.6 V max VI/O when combined with series impedance. |
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 (24 V), identical SMB (DO-214AA) package but lower PPPM = 600 W (same rating), slightly higher VC = 39.4 V at 15.3 A | Compatible in board space-constrained designs where DO-214AA footprint is already used; same thermal derating curve | Select SMBJ24CA if legacy layout uses SMB instead of SMBG; verify pad thermal relief matches 0.2" × 0.2" requirement. |
| SMCJ24CA | Same VWM/VBR, but larger SMC (DO-214AB) package with higher PPPM = 1500 W and lower VC = 38.9 V at 38.9 A | Used where higher surge margin is required (e.g., front-end power entry); requires larger PCB area and different thermal pad layout | Choose SMCJ24CA only when system-level testing demands >600 W capability; not drop-in due to footprint and height differences. |
Compared with SMBG24CAHE3/52, SMBJ24CA offers identical electrical protection in a slightly smaller package but shares the same thermal limitations, while SMCJ24CA delivers higher surge capacity at the cost of board space and layout redesign-making SMBG24CAHE3/52 optimal for space-constrained AEC-Q101 automotive modules requiring proven 600 W performance.
Availability
SMBG24CAHE3/52 is available at Aetrix Electronics and suitable for automotive infotainment power rails, industrial PLC analog I/O protection, and telecom RS-485 interface circuits requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for SMBG24CAHE3/52 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 optimization.
The SMBG TRANSZORB® series is engineered for high-reliability transient suppression in harsh environments-specifically targeting automotive, industrial, and telecom applications where AEC-Q101 qualification, low leakage, and repeatable clamping are mandatory.
FAQ
What is the clamping voltage of SMBG24CAHE3/52 and how is it measured?
The SMBG24CAHE3/52 has a maximum clamping voltage (VC) of 38.9 V at 15.4 A peak pulse current (IPPM), tested with a 10/1000 µs waveform per IEC 61000-4-5. This value represents the upper limit of voltage seen by protected circuitry during a standardized surge event and is guaranteed across temperature and production lot variations. The SMBG24CAHE3/52 achieves this clamping performance while maintaining low incremental resistance, ensuring predictable protection behavior in real-world transients.
Is SMBG24CAHE3/52 suitable for automotive applications?
Yes, SMBG24CAHE3/52 is explicitly AEC-Q101 qualified, with test records covering HTGB, HTRB, TCT, and mechanical shock per the standard. Its −55 °C to +150 °C operating junction temperature range, low leakage (<1.0 µA), and robust 600 W surge rating make it appropriate for engine control units, body electronics, and ADAS sensors. The HE3 suffix denotes AEC-Q101 qualification and RoHS compliance, confirming SMBG24CAHE3/52 meets automotive supply chain requirements.
How does the bidirectional design of SMBG24CAHE3/52 affect its use in circuit protection?
The bidirectional configuration of SMBG24CAHE3/52 allows symmetrical clamping across both polarities, making it ideal for AC signal lines, differential buses (e.g., CAN, RS-485), or ungrounded power domains where voltage reversals occur. Unlike unidirectional TVS diodes, SMBG24CAHE3/52 requires no polarity marking and functions identically regardless of terminal orientation-simplifying layout and eliminating risk of reverse installation. Its VBR min/max (26.7 V / 29.5 V) applies equally in both directions.
What is the thermal resistance of SMBG24CAHE3/52 and how does it impact PCB layout?
SMBG24CAHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Vishay datasheet. This value assumes minimum recommended pad layout; reducing copper area increases thermal impedance and risks exceeding 150 °C junction temperature during repetitive surges. To maintain reliability, designers must adhere to the specified pad dimensions and avoid excessive thermal vias that compromise solder joint integrity.
Does SMBG24CAHE3/52 have any special handling or assembly requirements?
SMBG24CAHE3/52 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and withstands peak reflow temperatures up to 260 °C without baking. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for solderability, and whisker resistance meets JESD 201 Class 2. No special handling beyond standard ESD-safe practices is required. The SMBG24CAHE3/52 is optimized for high-speed automated placement due to its low-profile, gull-wing lead geometry and consistent weight (0.096 g).
SMBG24CAHE3/52 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):
- 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)
SMBG24CAHE3/52 FAQ
1.How can I place an order for SMBG24CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG24CAHE3/52 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 SMBG24CAHE3/52 reliable?
The price and inventory of SMBG24CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG24CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG24CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG24CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG24CAHE3/52?
SMBG24CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG24CAHE3/52 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 SMBG24CAHE3/52?
For technical support, including SMBG24CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG24CAHE3/52 requirements.
6.How does Aetrix verify that SMBG24CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG24CAHE3/52 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 SMBG24CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG24CAHE3/52?
All SMBG24CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG24CAHE3/52, 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 SMBG24CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG24CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG24CAHE3/52 Tags
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