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Vishay General Semiconductor - Diodes Division SMBG24CA-E3/5B
- Part No.:
- SMBG24CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG24CA-E3/5B.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBG24CA-E3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust ESD and surge protection on signal/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 SMBG24CA-E3/5B datasheet, SMBG24CA-E3/5B pinout, SMBG24CA-E3/5B application, or SMBG24CA-E3/5B equivalent, key selection criteria include bidirectional clamping behavior, 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 device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 24 V), then rapidly avalanches to limit transient overvoltages across protected nodes. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance, critical for repeatable clamping performance during repetitive surges.
The SMBG24CA-E3/5B is rated for -55 °C to +150 °C junction temperature, with thermal resistance RθJA = 100 °C/W (on 0.2" × 0.2" pads) and RθJL = 20 °C/W, enabling effective heat dissipation during 600 W transient events. It meets UL 497B recognition (QVGQ2) and complies with ANSI/IEEE C62.35 surge test standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 26.7 V / 29.5 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 38.9 V at 15.4 A - Clamped voltage during full 600 W surge; directly limits stress on downstream ICs or MOSFETs. |
| PPPM | 600 W (10/1000 µs) - Peak surge energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) compliance when properly laid out. |
| ID @ VWM | 1.0 µA max - Ultra-low leakage at rated stand-off; avoids loading sensitive analog or low-power sensor interfaces. |
| TJ Range | -55 °C to +150 °C - Full automotive-grade operating envelope; validated per AEC-Q101 stress test requirements. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 6.48 mm × 3.94 mm × 2.10 mm (L × W × H); matte tin-plated leads, J-STD-002 solderable, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Either terminal accepts surge current; symmetrical structure enables identical clamping in both directions. |
| Cathode | Transient current entry (bidirectional) | No functional distinction between terminals; device lacks polarity marking per spec sheet Note on bidirectional types. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 surges up to 4 kV in properly designed PCB layouts. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, ADAS sensors, and infotainment power rails. |
| Glass passivated junction | Ensures long-term parameter stability and low leakage drift under thermal cycling and humidity exposure. |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow without baking; eliminates pre-conditioning delays in high-volume SMT lines. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs and microcontroller GPIOs from load-dump and inductive switching transients in vehicle body electronics. IC Role / Device Role / Timing Role: Shunt TVS element placed directly at connector or IC pad to clamp fast-rising transients (<1 ns response) before they reach silicon. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V MCUs by limiting voltage to ≤38.9 V during 15.4 A surge events. | Use Scenario: Safeguarding differential CAN_H/CAN_L lines against ESD (IEC 61000-4-2 ±25 kV air) and surge (IEC 61000-4-5) in factory automation controllers. IC Role / Device Role / Timing Role: Bidirectional clamping device mounted symmetrically across differential pair to suppress common-mode and differential-mode transients. Use Value: Maintains signal integrity by adding <1 pF junction capacitance at zero bias (per Fig. 4), avoiding data rate degradation on 1 Mbps CAN FD links. |
| Consumer Power Adapter Input | Telecom DSL Line Protection |
Use Scenario: Secondary-side overvoltage suppression on 24 V DC output rails of wall adapters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Final-stage clamping device after primary-side MOV and fuse, providing precise voltage limiting where low clamping ratio matters. Use Value: Achieves VC/VBR ≈ 1.4 - tighter than typical unidirectional TVS - reducing margin needed for downstream regulator input rating. | Use Scenario: Protecting ADSL/VDSL line drivers and receivers from induced surges on twisted-pair telephone lines exposed to outdoor environments. IC Role / Device Role / Timing Role: Bidirectional TVS placed across tip/ring pair to absorb longitudinal mode surges while preserving low-capacitance signal path. Use Value: Withstand 600 W pulses without degradation, verified over >1000 surge cycles per JEDEC JESD22-A114 reliability testing. |
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-E3/5B | Same VWM/VBR/VC, but lower PPPM = 600 W (same rating), different package: SMB (DO-214AA), slightly larger footprint (4.57 mm × 3.94 mm vs. 6.48 mm × 3.94 mm). | Less suitable for ultra-dense layouts due to wider body; same AEC-Q101 qualification and MSL Level 1. | Select SMBJ24CA-E3/5B only if existing PCB uses SMB footprint; SMBG offers superior power density per mm². |
| SMCJ24CA-E3/5B | Higher PPPM = 1500 W, same VWM/VBR, larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), higher RθJA = 15 °C/W. | Better for high-energy surges (e.g., 10/1000 µs >20 A), but excessive for most 24 V bus protection; requires more board area. | Choose SMCJ24CA-E3/5B only when system-level testing shows SMBG24CA-E3/5B clamping margin is insufficient under worst-case coupling. |
Compared with SMBJ24CA-E3/5B and SMCJ24CA-E3/5B, the SMBG24CA-E3/5B delivers identical 24 V protection performance in the smallest qualified footprint (DO-215AA), optimizing board space without sacrificing AEC-Q101 reliability or 600 W surge capability.
Availability
SMBG24CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor modules, industrial CAN networks, and telecom line interface designs requiring stable component supply, RoHS-compliant packaging, and AEC-Q101 assurance.
Supply support for SMBG24CA-E3/5B 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 qualification.
The SMBG series was engineered specifically for high-density, high-reliability transient suppression in automotive and industrial environments-prioritizing low-profile packaging, AEC-Q101 validation, and consistent clamping performance across temperature and life cycle.
FAQ
What does the "CA" suffix indicate in SMBG24CA-E3/5B?
The "CA" suffix denotes a bidirectional configuration: SMBG24CA-E3/5B provides symmetrical clamping in both polarities, unlike unidirectional variants (e.g., SMBG24A). This makes it ideal for protecting AC-coupled or differential signal lines such as CAN, RS-485, or telecom interfaces where voltage transients can occur in either direction. The device has no polarity marking, confirming its bidirectional design per Vishay documentation.
Is SMBG24CA-E3/5B suitable for IEC 61000-4-5 surge testing?
Yes, SMBG24CA-E3/5B is rated for 600 W peak pulse power with a 10/1000 µs waveform-matching the energy profile of IEC 61000-4-5 Level 4 (4 kV) tests when implemented with proper PCB layout (e.g., short traces, 5.0 mm × 5.0 mm copper pads per terminal). Its 38.9 V clamping voltage at 15.4 A ensures downstream 24 V-rated components remain within safe operating limits during standardized surge events.
Does SMBG24CA-E3/5B require derating at elevated ambient temperatures?
Yes, SMBG24CA-E3/5B must be derated above 25 °C ambient per Figure 2 in the datasheet: its peak pulse power decreases linearly to ~400 W at 85 °C and ~200 W at 125 °C. This is due to junction-to-ambient thermal resistance (RθJA = 100 °C/W). Designers must verify clamping performance under worst-case thermal conditions using the published derating curve-not just room-temperature specs-especially in enclosed automotive or industrial enclosures.
How does the SMBG24CA-E3/5B compare to unidirectional SMBG24A-E3/5B in circuit implementation?
SMBG24CA-E3/5B replaces SMBG24A-E3/5B in bidirectional applications without circuit modification, but cannot substitute in unidirectional configurations requiring forward conduction (e.g., DC power rail clamping with cathode grounded). The CA version has identical VWM, VBR, and VC specs but omits polarity marking and supports symmetrical surge handling-making it mandatory for AC or differential lines, whereas SMBG24A-E3/5B is limited to DC polarity-defined paths.
What is the meaning of the "E3/5B" suffix in SMBG24CA-E3/5B?
The "E3" indicates RoHS-compliant, industrial-grade construction with matte tin-plated leads; "5B" specifies packaging in 13-inch diameter plastic tape and reel, with 3200 units per reel. This format supports high-speed pick-and-place assembly and aligns with Vishay's standard logistics coding-distinct from "52" (7-inch reel, 750 units) and "HE3" (AEC-Q101 qualified variant). All E3-suffix parts meet JESD201 Class 2 whisker resistance.
SMBG24CA-E3/5B 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG24CA-E3/5B FAQ
1.How can I place an order for SMBG24CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG24CA-E3/5B 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 SMBG24CA-E3/5B reliable?
The price and inventory of SMBG24CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG24CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG24CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG24CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG24CA-E3/5B?
SMBG24CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG24CA-E3/5B 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 SMBG24CA-E3/5B?
For technical support, including SMBG24CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG24CA-E3/5B requirements.
6.How does Aetrix verify that SMBG24CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG24CA-E3/5B 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 SMBG24CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG24CA-E3/5B?
All SMBG24CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG24CA-E3/5B, 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 SMBG24CA-E3/5B part is unused and in its original packaging.
Return procedure for SMBG24CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG24CA-E3/5B Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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