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Vishay General Semiconductor - Diodes Division SMBJ17CA-E3/52
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- Part No.:
- SMBJ17CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17CA-E3/52.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,856
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Product details
Overview
SMBJ17CA-E3/52 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-E3/52 datasheet, SMBJ17CA-E3/52 pinout, SMBJ17CA-E3/52 application, or SMBJ17CA-E3/52 equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, thermal derating curves, JEDEC-compliant SMB package dimensions, and AEC-Q101-qualified alternatives where applicable.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR min/max (18.9 V / 20.9 V), ID ≤1.0 µA at VWM = 17 V, and VC = 27.6 V at IPPM = 21.7 A under 10/1000 µs waveform. Its low incremental surge resistance and <1 ns response time enable effective suppression of ESD, lightning-induced surges, and inductive switching spikes.
Thermal performance is defined by RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W, supporting operation from –55 °C to +150 °C junction temperature. The device meets MSL Level 1 per J-STD-020 and is RoHS-compliant with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 18.9 V / 20.9 V at IT = 1 mA - guaranteed breakdown onset range for bidirectional conduction |
| VC @ IPPM | 27.6 V at 21.7 A - clamped voltage during 10/1000 µs transient, defining worst-case overvoltage seen by protected circuit |
| PPPM | 600 W - peak pulse power handling capability under standardized surge waveform |
| ID @ VWM | ≤1.0 µA - leakage current level ensuring minimal standby power loss and signal integrity in high-impedance paths |
| TJ max. | +150 °C - maximum junction temperature enabling use in under-hood automotive or industrial ambient environments |
| Package | SMB (DO-214AA) - surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height, optimized for automated placement |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts surge current when voltage falls below –VBR; forms one side of bidirectional clamping path |
| Cathode | Transient current entry (positive half-cycle) | Conducts surge current when voltage exceeds +VBR; completes symmetrical clamping behavior |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power (10/1000 µs) | Withstands high-energy transients common in industrial motor drives and telecom line surges |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream ICs such as RS-485 transceivers or microcontroller I/O |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow compatibility up to 260 °C peak without baking |
| AEC-Q101 qualification option | Available as SMBJ17CAHE3 variant for automotive applications requiring reliability validation |
Applications
| Industrial Sensor Interface | Telecom Line Protection |
|---|---|
|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA loops) from ESD and field-wiring induced transients in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal and return lines to clamp ±2 kV ESD (IEC 61000-4-2) and 1 kV ring wave surges. Use Value: Limits voltage excursion to ≤27.6 V, preventing damage to precision DACs or op-amps while maintaining signal fidelity below VWM = 17 V. |
Use Scenario: Shielding RS-485/RS-422 differential data lines in base station backhaul equipment exposed to lightning-induced ground potential rise. IC Role / Device Role / Timing Role: Paired SMBJ17CA-E3/52 devices (one per line) referenced to common-mode ground, suppressing common-mode surges up to 600 W. Use Value: Maintains data integrity during 10/1000 µs surges by clamping differential swing within transceiver's absolute maximum rating (±25 V). |
| Automotive Body Control Module | Consumer Appliance Motor Drive |
|
Use Scenario: Safeguarding LIN bus communication lines in door module ECUs against load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS installed between LIN line and chassis ground, rated for intermittent 17 V nominal bus operation. Use Value: Survives 12 V system load dump events (ISO 7637-2 Pulse 5a) with clamping below 30 V, preserving transceiver functionality. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Mounted across motor terminals to shunt flyback energy during MOSFET turn-off transitions. Use Value: Absorbs 600 W pulses without degradation, eliminating voltage spikes that cause MCU resets or gate driver latch-up. |
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-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package | No difference in circuit function or layout; selected where halogen-free compliance is mandated | Direct material substitution when environmental compliance requires halogen-free construction |
| SMBJ17CAHE3_B/H | AEC-Q101 qualified version with same VWM, VBR, and PPPM; enhanced reliability testing per automotive standard | Required for automotive body electronics, infotainment, or ADAS subsystems needing qualification evidence | Preferred for automotive OEM designs where AEC-Q101 documentation and traceability are mandatory |
Compared with SMBJ17CA-E3/52, the M3 variant offers halogen-free construction without electrical trade-offs, while the HE3 variant adds AEC-Q101 qualification for automotive use - neither requires PCB changes, but HE3 provides certified reliability data for safety-critical deployments.
Availability
SMBJ17CA-E3/52 is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, and consumer appliance motor drive circuits requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.
Supply support for SMBJ17CA-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, power efficiency, and application-specific optimization.
The SMBJ series targets robust transient suppression in space-constrained, high-reliability applications - engineered for fast response, low clamping, and compatibility with automated SMT assembly across industrial, telecom, and automotive segments.
FAQ
What is the standoff voltage rating of SMBJ17CA-E3/52?
The SMBJ17CA-E3/52 has a maximum reverse standoff voltage (VWM) of 17 V, meaning it remains non-conductive under normal operating conditions up to this DC or RMS voltage level. This value ensures compatibility with 12 V and 15 V logic/power rails while providing margin before breakdown at 18.9–20.9 V. The SMBJ17CA-E3/52 maintains leakage current ≤1.0 µA at this voltage, minimizing impact on sensitive analog or digital inputs.
Is SMBJ17CA-E3/52 unidirectional or bidirectional?
SMBJ17CA-E3/52 is a bidirectional TVS diode, indicated by the "CA" suffix per Vishay's naming convention. It clamps transient voltages symmetrically in both polarities - conducting when voltage exceeds +VBR or falls below –VBR. Unlike unidirectional variants (e.g., SMBJ17A), the SMBJ17CA-E3/52 has no cathode band marking and is used where AC signals, floating references, or dual-polarity surges require protection without polarity constraints.
What is the peak pulse current rating for SMBJ17CA-E3/52?
The SMBJ17CA-E3/52 supports a peak pulse current (IPPM) of 21.7 A under the standard 10/1000 µs double-exponential waveform. This value is derived from its 600 W peak pulse power rating and 27.6 V clamping voltage (IPPM = PPPM / VC). The SMBJ17CA-E3/52 sustains this current without parametric shift or failure when mounted per recommended pad layout (0.2" × 0.2" copper per terminal).
Does SMBJ17CA-E3/52 meet automotive qualification standards?
The standard SMBJ17CA-E3/52 is commercial-grade and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the pin-compatible SMBJ17CAHE3_B/H variant - identical in electrical and mechanical specs - which undergoes full AEC-Q101 stress testing for automotive applications. For designs requiring automotive qualification, SMBJ17CAHE3_B/H is the validated alternative, while SMBJ17CA-E3/52 remains suitable for industrial and consumer use.
What package type does SMBJ17CA-E3/52 use, and what are its key dimensions?
SMBJ17CA-E3/52 uses the SMB (DO-214AA) surface-mount package: 5.59 mm × 4.06 mm body length/width, 2.20 mm maximum height, with gull-wing leads spaced 3.94 mm center-to-center. Its compact footprint supports high-density PCB layouts, and the package meets UL 94 V-0 flammability rating. The SMBJ17CA-E3/52 is supplied in 7" tape-and-reel (750 units/reel) with E3 suffix denoting RoHS compliance and commercial temperature grade.
SMBJ17CA-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:
- 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-E3/52 FAQ
1.How can I place an order for SMBJ17CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17CA-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 SMBJ17CA-E3/52 reliable?
The price and inventory of SMBJ17CA-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 SMBJ17CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ17CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17CA-E3/52?
SMBJ17CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17CA-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 SMBJ17CA-E3/52?
For technical support, including SMBJ17CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17CA-E3/52 requirements.
6.How does Aetrix verify that SMBJ17CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ17CA-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 SMBJ17CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ17CA-E3/52?
All SMBJ17CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17CA-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 SMBJ17CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ17CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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