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Vishay General Semiconductor - Diodes Division SMBJ17CA-E3/5B
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- Part No.:
- SMBJ17CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17CA-E3/5B.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,817
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Product details
Overview
SMBJ17CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), and clamps to ≤27.6 V at 21.7 A peak surge current - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ17CA-E3/5B datasheet, SMBJ17CA-E3/5B pinout, SMBJ17CA-E3/5B application, or SMBJ17CA-E3/5B equivalent, key selection criteria include bidirectional clamping capability, 17 V working voltage compatibility with 24 V systems, low clamping ratio (VC/VBR ≈ 1.38), and RoHS-compliant commercial-grade packaging with MSL Level 1 rating.
Technical Context
This TVS diode operates symmetrically in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and fast response (<1 ns), while the low incremental surge resistance minimizes voltage overshoot during transient events.
The device is rated for repetitive 10/1000 µs surges at 0.01% duty cycle and derates linearly above 25 °C ambient, with thermal resistance RθJA = 100 °C/W and maximum junction temperature of +150 °C. It meets UL 497B recognition and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; compatible with 24 V nominal bus systems with margin. |
| VBR (min/max) | 18.9 V / 20.9 V at 1 mA - Confirmed bidirectional breakdown range ensures predictable turn-on across manufacturing lot and temperature. |
| VC @ IPPM | 27.6 V at 21.7 A - Clamping voltage under 600 W 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 600 W - Peak pulse power handling per single transient; supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity. |
| ID @ VWM | 1.0 µA max - Ultra-low leakage preserves signal integrity and battery life in always-on sensor nodes. |
| TJ max | +150 °C - Enables operation in under-hood automotive modules and industrial enclosures without forced cooling. |
| Package | SMB (DO-214AA) - Standardized 2-pin SMD outline with 5.21 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; both leads serve as interchangeable surge current paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge conduction path | Either terminal accepts positive or negative transients; no orientation required during PCB placement. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against lightning-induced surges and inductive switching spikes in industrial control inputs. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage exposure to downstream logic or analog front-ends during transient events. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free assembly without moisture sensitivity concerns or baking requirements. |
| UL 497B recognized (QVGQ2) | Validates suitability for telecom and data line protection in safety-certified end equipment. |
| RoHS-compliant, matte tin-plated leads | Ensures solderability per J-STD-002 and long-term reliability in high-humidity environments. |
Applications
| Industrial Sensor Interface | Telecom Data Line Protection |
|---|---|
|
Use Scenario: Protecting 4–20 mA current loop transmitters and RS-485 nodes from ESD and load dump in factory automation cabinets. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to shunt transients before signal conditioning circuitry. Use Value: Prevents latch-up or gate oxide damage in isolated ADC drivers and digital isolators by limiting voltage to ≤27.6 V during 1 kV surge events. |
Use Scenario: Shielding Ethernet PHY interface lines (e.g., 10/100BASE-TX) from induced surges in building-wide LAN infrastructure. IC Role / Device Role / Timing Role: Primary line-side transient suppressor in common-mode choke + TVS filter stage for IEEE 802.3af compliance. Use Value: Maintains signal integrity below 30 V clamping threshold while supporting >100,000 surge cycles without parameter drift. |
| Automotive Body Control Module | Consumer Appliance Power Input |
|
Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins against battery reverse connection and jump-start transients. IC Role / Device Role / Timing Role: Secondary protection device downstream of fuse and primary TVS, absorbing residual energy after bulk clamping. Use Value: Withstands 150 °C junction temperature and passes AEC-Q101 qualification when ordered as HE3 variant - this E3/5B part shares identical die and thermal design. |
Use Scenario: Suppressing switch-mode power supply turn-on spikes and ESD on AC input rectifier outputs in smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Low-leakage (1 µA) bidirectional clamp across DC bus rails to prevent overvoltage triggering of OVP circuits. Use Value: Delivers 600 W surge capacity in compact SMB footprint, eliminating need for larger SMA or DO-214AB packages in space-constrained designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17CA-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No difference in circuit function or layout; selected where halogen-free material compliance is mandated. | Choose M3/5B for environmental compliance programs requiring halogen-free bill-of-materials. |
| SMCJ17CA-E3/2A | Same VWM/VBR/VC, but in larger SMC (DO-214AB) package with 1500 W PPPM. | Used where higher surge energy (e.g., IEC 61000-4-5 Level 4) or improved thermal dissipation is required. | Choose SMCJ17CA-E3/2A only if system-level surge testing exceeds 600 W or board layout allows larger footprint. |
Compared with SMBJ17CA-E3/5B, the M3/5B offers identical protection performance with halogen-free construction, while the SMCJ17CA-E3/2A trades compact size for 2.5× higher surge power - making SMBJ17CA-E3/5B optimal for cost- and space-sensitive 600 W-class designs.
Availability
SMBJ17CA-E3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom data line protection, and consumer appliance power input stages requiring stable component supply and RoHS-compliant commercial-grade TVS diodes.
Supply support for SMBJ17CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series is engineered for high-reliability transient suppression in harsh environments - targeting industrial, telecom, and automotive subsystems where consistent clamping behavior and long-term stability are critical.
FAQ
What is the standoff voltage rating of SMBJ17CA-E3/5B?
The SMBJ17CA-E3/5B has a maximum reverse standoff voltage (VWM) of 17 V, meaning it remains non-conductive up to this DC or RMS voltage level. This value provides sufficient margin below its 18.9–20.9 V breakdown range and aligns with 24 V system rails where transient headroom is required. The SMBJ17CA-E3/5B maintains <1.0 µA leakage at this voltage, ensuring minimal impact on low-power circuits.
Is SMBJ17CA-E3/5B unidirectional or bidirectional?
SMBJ17CA-E3/5B is a bidirectional TVS diode, as indicated by the "CA" suffix and confirmed in Vishay's datasheet section "DEVICES FOR BIDIRECTION APPLICATIONS". It exhibits symmetrical clamping behavior in both polarities, with identical VBR, VC, and IPPM specifications for positive and negative transients - making it ideal for AC signal lines, differential buses, and polarity-agnostic protection points.
What package does SMBJ17CA-E3/5B use, and is it compatible with automated assembly?
SMBJ17CA-E3/5B uses the SMB (DO-214AA) surface-mount package, measuring 5.21 mm × 4.06 mm with gull-wing leads. It is explicitly designed for automated placement and meets MSL Level 1 per J-STD-020, allowing direct placement into reflow ovens without pre-baking. The matte tin-plated terminals comply with J-STD-002 solderability standards, ensuring reliable joint formation in high-volume manufacturing.
Does SMBJ17CA-E3/5B meet any safety or reliability certifications?
Yes, SMBJ17CA-E3/5B carries Underwriters Laboratories (UL) recognition under file E136766 and standard UL 497B for protectors, confirming its suitability in safety-critical telecom and industrial applications. It also meets JESD201 Class 2 whisker resistance and is RoHS-compliant per EU Directive 2011/65/EU. While the E3/5B variant is commercial-grade, the same die is AEC-Q101 qualified in HE3 ordering variants.
How does SMBJ17CA-E3/5B compare to SMAJ17CA in terms of surge capability?
SMBJ17CA-E3/5B delivers 600 W peak pulse power (10/1000 µs), whereas SMAJ17CA is rated for only 400 W in the same waveform. This 50% higher surge capacity enables SMBJ17CA-E3/5B to handle more severe transients - such as those defined in IEC 61000-4-5 Level 3 - without degradation. Both share identical VWM and VBR, but the SMB package's superior thermal path supports sustained reliability under repetitive surge conditions.
SMBJ17CA-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- 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 (SMBJ)
SMBJ17CA-E3/5B FAQ
1.How can I place an order for SMBJ17CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17CA-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 SMBJ17CA-E3/5B reliable?
The price and inventory of SMBJ17CA-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 SMBJ17CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ17CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17CA-E3/5B?
SMBJ17CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17CA-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 SMBJ17CA-E3/5B?
For technical support, including SMBJ17CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17CA-E3/5B requirements.
6.How does Aetrix verify that SMBJ17CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ17CA-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 SMBJ17CA-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ17CA-E3/5B?
All SMBJ17CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17CA-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 SMBJ17CA-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ17CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17CA-E3/5B Tags
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