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Vishay General Semiconductor - Diodes Division SMB8J24C-E3/52
- Part No.:
- SMB8J24C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J24C-E3/52.pdf
- Description:
- TVS DIODE 24VWM 43VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,553
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Product details
Overview
SMB8J24C-E3/52 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on signal and power lines. It features 24 V stand-off voltage (VWM), 38.9 V maximum clamping voltage (VC) at 20.6 A peak pulse current (IPPM), and 800 W peak pulse power (PPPM) with 10/1000 µs waveform. Used to protect automotive sensor interfaces and industrial I/O circuits against ESD and load dump transients.
For engineers reviewing the SMB8J24C-E3/52 datasheet, SMB8J24C-E3/52 pinout, SMB8J24C-E3/52 application, or SMB8J24C-E3/52 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports consistent clamping under repetitive surge events.
The device meets MSL level 1 per J-STD-020 with 260 °C reflow peak, and its thermal resistance (RθJA = 72 °C/W) enables reliable operation up to TJ = 150 °C when mounted on recommended pad layout. It is explicitly AEC-Q101 qualified for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing range. |
| VBR min/max | 26.7 V / 29.5 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | 38.9 V - Clamped voltage at 20.6 A peak pulse current; limits downstream voltage stress during surge. |
| PPPM | 800 W - Peak pulse power handling with 10/1000 µs waveform; determines survivability against lightning-induced surges. |
| ID @ VWM | <1.0 µA - Reverse leakage at stand-off voltage; minimizes quiescent power loss and signal distortion. |
| TJ max | 150 °C - Maximum junction temperature; sets thermal derating boundary for sustained operation. |
| Package | DO-214AA (SMB) - Surface-mount outline with 0.220" body length; compatible with standard SMB footprint and pick-and-place equipment. |
Pinout & Package
DO-214AA (SMB) package: bi-directional device with no polarity marking; symmetrical two-terminal construction. Cathode band absent-device functions identically in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve as bidirectional surge current entry/exit points; no fixed anode/cathode assignment. |
| Case | Thermal and mechanical interface | Plastic molded body provides UL 94 V-0 flammability rating and mechanical stability during reflow and board flex. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring extended temperature cycling and humidity resistance. |
| Bi-directional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and ungrounded sensor outputs without polarity concerns. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes overvoltage exposure during surge events-critical for safeguarding 3.3 V or 5 V logic-level ICs downstream. |
| MSL Level 1 moisture sensitivity | Allows indefinite floor life and standard reflow profile (peak 260 °C) without baking-reduces manufacturing overhead. |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and whisker resistance per JESD201 Class 1A-supports long-term reliability in vibration-prone environments. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional TVS clamps transient energy before it reaches the protected IC's input pins. Use Value: Prevents latch-up or permanent damage to automotive-grade microcontrollers and signal conditioners exposed to 12 V/24 V system transients. |
Use Scenario: Safeguarding PLC digital input modules and analog acquisition channels from field-wiring induced surges. IC Role / Device Role / Timing Role: Fast-response shunt element that diverts >20 A surge current away from precision ADC front-ends and optocoupler drivers. Use Value: Maintains signal integrity and extends mean time between failures in factory automation systems with long cable runs. |
| Consumer USB Port Protection | Telecom Line Interface |
Use Scenario: ESD and surge protection for USB 2.0 data lines (D+/D−) in set-top boxes and smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp placed directly at connector to absorb ±15 kV contact discharge per IEC 61000-4-2. Use Value: Preserves signal rise/fall times (<1 ns response) while limiting line voltage to <40 V-ensuring USB compliance and link stability. |
Use Scenario: Overvoltage protection on telephone line interface circuits (e.g., SLIC, CODEC) in VoIP gateways and PBX systems. IC Role / Device Role / Timing Role: Primary surge suppression stage absorbing lightning-induced common-mode transients on tip/ring pairs. Use Value: Withstands repeated 10/1000 µs surges up to 800 W-meets GR-1089-CORE and ITU-T K.20 requirements for telecom infrastructure. |
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-E3/52 | Same DO-214AA package and 24 V VWM, but rated for 1000 W PPPM (uni-directional only); not bi-directional. | Requires polarity-aware layout; unsuitable for AC or differential signal protection without redesign. | Select only if uni-directional clamping suffices and higher 1000 W rating is required for specific surge profiles. |
| SMCJ24CA-E3/52 | DO-214AB (SMC) package, same 24 V VWM and bi-directionality, but 1500 W PPPM and higher IPPM (33.3 A). | Larger footprint (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm) and higher thermal mass-requires PCB area and layout change. | Choose when system-level surge immunity exceeds 800 W and board space permits larger SMC package. |
Compared with SMBJ24CA-E3/52 and SMCJ24CA-E3/52, SMB8J24C-E3/52 uniquely balances bi-directional functionality, AEC-Q101 qualification, and compact SMB footprint-making it optimal for space-constrained automotive and industrial modules where polarity-agnostic protection is mandatory.
Availability
SMB8J24C-E3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMB8J24C-E3/52 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 automotive-grade qualification.
SMB8JxxCA series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in harsh automotive and industrial environments.
FAQ
What is the clamping voltage of SMB8J24C-E3/52 at its rated peak pulse current?
The SMB8J24C-E3/52 has a maximum clamping voltage (VC) of 38.9 V when subjected to its rated peak pulse current (IPPM) of 20.6 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream circuitry remains below critical overvoltage thresholds during surge events. The SMB8J24C-E3/52 maintains this performance across its full operating temperature range.
Is SMB8J24C-E3/52 suitable for automotive applications?
Yes, SMB8J24C-E3/52 is explicitly AEC-Q101 qualified and rated for operation from −55 °C to +150 °C junction temperature. Its glass-passivated junction, matte tin plating, and MSL Level 1 reflow compatibility meet automotive manufacturing and reliability requirements. The SMB8J24C-E3/52 is commonly deployed in engine control, body electronics, and ADAS sensor protection circuits.
How does SMB8J24C-E3/52 differ from uni-directional SMBJ24A variants?
The SMB8J24C-E3/52 is bi-directional with symmetrical clamping in both polarities, whereas SMBJ24A is uni-directional and requires correct cathode orientation. SMB8J24C-E3/52 has lower PPPM (800 W vs. 1000 W) and lower IPPM (20.6 A vs. 25.7 A) due to bi-directional architecture, but eliminates polarity-dependent layout errors. Both share DO-214AA packaging and 24 V VWM.
What is the reverse leakage current specification for SMB8J24C-E3/52 at 24 V?
At its 24 V stand-off voltage (VWM), the SMB8J24C-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C. This low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes standby power loss in battery-operated systems. Leakage remains well below 10 µA even at elevated temperatures up to 125 °C.
Does SMB8J24C-E3/52 require special PCB layout considerations?
Yes-the SMB8J24C-E3/52 achieves rated 800 W pulse power only when mounted on minimum recommended copper pads: 0.2" × 0.2" (5.0 mm × 5.0 mm) per terminal. Smaller pads increase thermal resistance and reduce surge capability. No polarity marking is present, so layout must accommodate symmetrical two-terminal placement. Thermal relief should be minimized to maintain low RθJA.
SMB8J24C-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 43V
- Current - Peak Pulse (10/1000µs):
- 18.6A
- Power - Peak Pulse:
- 800W
- 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 (SMB)
SMB8J24C-E3/52 FAQ
1.How can I place an order for SMB8J24C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J24C-E3/52 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 SMB8J24C-E3/52 reliable?
The price and inventory of SMB8J24C-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB8J24C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMB8J24C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J24C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J24C-E3/52?
SMB8J24C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J24C-E3/52 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 SMB8J24C-E3/52?
For technical support, including SMB8J24C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J24C-E3/52 requirements.
6.How does Aetrix verify that SMB8J24C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMB8J24C-E3/52 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 SMB8J24C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMB8J24C-E3/52?
All SMB8J24C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J24C-E3/52, 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 SMB8J24C-E3/52 part is unused and in its original packaging.
Return procedure for SMB8J24C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J24C-E3/52 Tags
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