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Vishay General Semiconductor - Diodes Division SMB8J17C-E3/5B
- Part No.:
- SMB8J17C-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB8J17C-E3/5B.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,142
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Product details
Overview
SMB8J17C-E3/5B 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 17 V stand-off voltage (VWM), 29.0 A peak pulse current (IPPM) under 10/1000 µs waveform, 27.6 V maximum clamping voltage (VC), 800 W peak pulse power (PPPM), and AEC-Q101 qualification for automotive electronics.
For engineers reviewing the SMB8J17C-E3/5B datasheet, SMB8J17C-E3/5B pinout, SMB8J17C-E3/5B application, or SMB8J17C-E3/5B equivalent, key selection criteria include clamping performance at 27.6 V, bi-directional surge handling up to 29.0 A, RoHS-compliant matte tin terminations, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling robust protection against voltage transients induced by ESD, lightning surges, and inductive switching without polarity dependency. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM = 17 V).
The device delivers 800 W peak pulse power dissipation with a 10/1000 µs waveform, supported by low incremental surge resistance and fast response time (<1 ns). Thermal resistance is 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR min / max | 18.9 V / 20.9 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | 27.6 V - Clamping voltage at 29.0 A peak pulse current; limits downstream IC stress during surge events. |
| IPPM | 29.0 A - Peak surge current survivability under 10/1000 µs waveform; determines protection level for IEC 61000-4-5 Level 3/4. |
| PPPM | 800 W - Peak pulse power rating; defines energy-handling capability for transient suppression duty cycle. |
| ID @ VWM | <1.0 µA - Reverse leakage at 17 V; minimizes standby power loss and avoids false triggering in high-impedance circuits. |
| TJ max | 150 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, bi-directional configuration with no polarity marking. Case meets UL 94 V-0 flammability rating; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction between terminals; either terminal serves as cathode or anode depending on transient polarity. |
| Cathode Band (absent) | Polarity indicator | Not present - confirms bi-directional construction; device must be placed without orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test conditions. |
| MSL Level 1 (260 °C peak) | Enables standard reflow soldering without pre-baking; compatible with high-volume SMT assembly lines. |
| Glass passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity-induced parameter drift. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage exposure to protected ICs - critical for 3.3 V/5 V logic and sensor interfaces. |
| RoHS-compliant, matte tin terminations | Meets JESD 201 Class 1A whisker resistance; eliminates lead-free solder joint reliability concerns. |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting ABS, airbag, or engine control sensors connected to long harnesses subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bi-directional TVS clamping transients on analog/digital sensor signal lines (e.g., LIN, SENT, PWM outputs). Use Value: Limits voltage to ≤27.6 V during 29.0 A surges, preventing damage to 5 V sensor front-ends while maintaining signal integrity. |
Use Scenario: Safeguarding CANH/CANL differential pair in vehicle body control modules exposed to battery transients and ESD. IC Role / Device Role / Timing Role: Paired bi-directional TVS devices shunting common-mode surges on CAN bus lines. Use Value: Withstands 800 W peak pulse power and clamps to 27.6 V, preserving CAN transceiver functionality during ISO 16750-2 load dump events. |
| Telecom Power Supply Input Protection | Consumer USB Port ESD Suppression |
|
Use Scenario: Input stage protection for 24 V telecom DC-DC converters subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary surge limiter on unregulated input rail prior to filtering and regulation stages. Use Value: Absorbs 800 W transient energy with 27.6 V clamping, preventing overvoltage failure of upstream MOSFETs and controller ICs. |
Use Scenario: Board-level ESD protection for USB 2.0 data lines (D+/D−) in portable audio/video devices. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp placed adjacent to USB connector. Use Value: Delivers sub-1 ns response and <1.0 µA leakage at 17 V, ensuring signal integrity while passing IEC 61000-4-2 ±15 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17CA | Same VWM (17 V), identical DO-214AA package, but rated for 1000 W PPPM (uni-directional only); bi-directional version not offered. | Requires polarity-aware layout; unsuitable for symmetric signal lines like CAN or USB D+/D− without external biasing. | Select SMBJ17CA only when uni-directional protection suffices and board space allows discrete polarity assignment. |
| SMCJ17CA | DO-214AB (SMC) package, same 17 V VWM and 27.6 V VC, but higher 1500 W PPPM rating and 43.1 A IPPM. | Larger footprint (7.11 × 6.22 mm vs. 4.57 × 3.94 mm); better thermal dissipation but incompatible with dense layouts. | Choose SMCJ17CA where higher surge margin is required and PCB real estate permits larger package. |
Compared with SMBJ17CA and SMCJ17CA, SMB8J17C-E3/5B uniquely balances bi-directional symmetry, compact SMB footprint, AEC-Q101 qualification, and 800 W surge capacity-making it optimal for automotive and space-constrained industrial signal-line protection.
Availability
SMB8J17C-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus systems, telecom power inputs, and consumer USB port protection requiring stable component supply and AEC-Q101 compliance.
Supply support for SMB8J17C-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, efficiency, and application-specific optimization.
The SMB8J series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-power-density, surface-mount transient suppression in automotive, industrial, and telecom infrastructure where bi-directional symmetry and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of SMB8J17C-E3/5B at its rated peak pulse current?
The SMB8J17C-E3/5B has a maximum clamping voltage (VC) of 27.6 V at its specified peak pulse current (IPPM) of 29.0 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and ensures downstream circuitry remains below safe overvoltage thresholds during surge events. The SMB8J17C-E3/5B achieves this with a clamping ratio of approximately 1.46 relative to its nominal breakdown voltage.
Is SMB8J17C-E3/5B suitable for automotive applications?
Yes, SMB8J17C-E3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and glass-passivated junction meet stringent automotive reliability requirements. The SMB8J17C-E3/5B is commonly deployed in engine control units, ADAS sensor modules, and body electronics for transient suppression.
What does the "C" suffix in SMB8J17C-E3/5B indicate?
The "C" in SMB8J17C-E3/5B denotes bi-directional configuration, distinguishing it from uni-directional variants (e.g., SMB8J17A). This means the device provides symmetrical clamping for both positive and negative transients without polarity dependence. The SMB8J17C-E3/5B has no cathode band marking, confirming its bi-directional design and enabling orientation-agnostic PCB placement.
How does SMB8J17C-E3/5B differ from SMBJ17CA?
SMB8J17C-E3/5B is bi-directional with 800 W peak pulse power and 29.0 A IPPM, while SMBJ17CA is uni-directional with 1000 W PPPM and 36.2 A IPPM. The SMB8J17C-E3/5B uses the same DO-214AA package but lacks polarity marking and supports symmetric surge handling - essential for differential buses like CAN or USB. The SMB8J17C-E3/5B also carries AEC-Q101 qualification, whereas SMBJ17CA does not specify automotive qualification.
What is the maximum reverse leakage current for SMB8J17C-E3/5B at its stand-off voltage?
The SMB8J17C-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 17 V stand-off voltage (VWM), measured at TA = 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes standby power loss in battery-powered systems. The SMB8J17C-E3/5B maintains this specification across its full operating temperature range per Vishay Document Number 88422.
SMB8J17C-E3/5B 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.5V
- Current - Peak Pulse (10/1000µs):
- 26.2A
- 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)
SMB8J17C-E3/5B FAQ
1.How can I place an order for SMB8J17C-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB8J17C-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 SMB8J17C-E3/5B reliable?
The price and inventory of SMB8J17C-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 SMB8J17C-E3/5B is usually 5 days.
3.What payment methods are accepted for SMB8J17C-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB8J17C-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB8J17C-E3/5B?
SMB8J17C-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB8J17C-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 SMB8J17C-E3/5B?
For technical support, including SMB8J17C-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB8J17C-E3/5B requirements.
6.How does Aetrix verify that SMB8J17C-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMB8J17C-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 SMB8J17C-E3/5B meets industry standards.
7.What is the process for return or replacement of SMB8J17C-E3/5B?
All SMB8J17C-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMB8J17C-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 SMB8J17C-E3/5B part is unused and in its original packaging.
Return procedure for SMB8J17C-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB8J17C-E3/5B Tags
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Diodes Incorporated
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