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Vishay General Semiconductor - Diodes Division SMBJ17C-E3/52
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- Part No.:
- SMBJ17C-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17C-E3/52.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ17C-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range (VBR at 1 mA), 27.6 V maximum clamping voltage (VC) at 21.7 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial sensor interfaces and automotive body control modules.
For engineers reviewing the SMBJ17C-E3/52 datasheet, SMBJ17C-E3/52 pinout, SMBJ17C-E3/52 application, or SMBJ17C-E3/52 equivalent, this page delivers verified electrical parameters, thermal derating behavior, JEDEC-compliant SMB package dimensions, and AEC-Q101-qualified alternatives for automotive-grade surge protection design.
Technical Context
This TVS diode operates as a voltage-clamping device in series with protected circuitry, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ns), while low incremental surge resistance enables effective energy diversion during transient events.
The SMBJ17C-E3/52 is rated for 150 °C maximum junction temperature and exhibits a 0.090 %/°C temperature coefficient of VBR. Its thermal resistance is 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads, supporting reliable operation in high-temperature industrial environments without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 17 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 18.9–20.9 V at 1 mA - Confirmed minimum/maximum reverse breakdown range; ensures predictable turn-on across production lot. |
| VC (Clamping Voltage) | 27.6 V at 21.7 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling capability under standardized 10/1000 µs waveform; validates robustness against IEC 61000-4-5 surges. |
| IPPM (Peak Pulse Current) | 21.7 A - Maximum non-repetitive surge current the device can safely clamp; directly linked to PCB trace sizing and layout robustness. |
| TJmax | 150 °C - Maximum allowable junction temperature; supports operation in under-hood automotive and industrial enclosures. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on recommended pad layout; informs heatsinking requirements and power derating above 25 °C. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads. Complies with UL 94 V-0 flammability rating and J-STD-002 solderability standards. Polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference node | Connected to lower-potential side (e.g., ground or return path); defines directionality of clamping action. |
| Cathode | Clamping output / Surge current sink | Connected to protected line (e.g., 12 V rail or CAN-H); conducts surge current to anode during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against Level 3 IEC 61000-4-5 surges (1 kV/2 Ω) on 12 V systems without parallel staging. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage stress on downstream ICs - critical for 3.3 V or 5 V logic interfacing with 12 V domains. |
| MSL Level 1 (JEDEC J-STD-020) | Allows unlimited floor life and reflow at 260 °C peak without baking; simplifies SMT manufacturing flow. |
| AEC-Q101 qualified option available | Supports automotive qualification path via HE3 suffix variants; meets stress test requirements for engine control and body electronics. |
| Glass passivated junction | Ensures long-term parameter stability and low leakage drift over temperature and lifetime - essential for safety-critical monitoring circuits. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
|
Use Scenario: Protecting microcontroller GPIOs and level-shifters connected to 12 V switch inputs subject to load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between input terminal and MCU supply rail, sinking transient energy to ground. Use Value: Limits voltage excursion to ≤27.6 V during 100 A/10 ms load dump events, preventing latch-up or gate oxide damage in 5 V tolerant I/O cells. |
Use Scenario: Safeguarding isolated digital input optocouplers on 24 V DC field-side interfaces exposed to relay coil flyback and EFT bursts. IC Role / Device Role / Timing Role: Standoff protector on the 24 V supply rail feeding input conditioning circuitry, activated only during >17 V transients. Use Value: Maintains <1 µA leakage at 24 V nominal, avoiding false triggering; clamps 21.7 A surges within 1 ns to preserve signal integrity across isolation barrier. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Front-End |
|
Use Scenario: Suppressing commutation spikes from brushed DC motors driving washing machine drum actuators. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals, diverting inductive energy away from H-bridge MOSFETs. Use Value: Withstands repetitive 600 W pulses at 0.01% duty cycle, enabling reliable operation over 10,000+ motor start-stop cycles without degradation. |
Use Scenario: Secondary-side overvoltage protection on +48 V telecom rectifier outputs feeding base station backplane regulators. IC Role / Device Role / Timing Role: Final-stage clamping element after bulk filtering, guarding against regulator failure-induced overvoltage. Use Value: 27.6 V clamping voltage ensures downstream 3.3 V/5 V point-of-load converters remain within absolute maximum ratings during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17A-E3/52 | Unidirectional, identical VWM/VBR/VC, same SMB package; differs only in marking code (LR vs. LR - same die). | No functional difference; used interchangeably in commercial-grade designs where AEC-Q101 is not required. | Select SMBJ17A-E3/52 for cost-sensitive industrial applications without automotive qualification needs. |
| SMBJ17CA-E3/52 | Bidirectional variant with symmetric VBR (±18.9–20.9 V); same VC and PPPM, but no polarity marking. | Required for AC-coupled or differential signal lines (e.g., RS-485, CAN bus) where voltage reversals occur. | Choose SMBJ17CA-E3/52 only when protecting bidirectional signals - not a drop-in replacement for SMBJ17C-E3/52. |
Compared with SMBJ17A-E3/52, the SMBJ17C-E3/52 offers identical clamping performance but is designated under Vishay's commercial-grade E3 suffix with RoHS compliance; versus SMBJ17CA-E3/52, it provides directional protection optimized for DC rails, eliminating unnecessary bidirectional conduction losses in unidirectional power paths.
Availability
SMBJ17C-E3/52 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, consumer appliance motor drives, and telecom power supply front-end designs requiring stable component supply and full traceability.
Supply support for SMBJ17C-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and high-volume manufacturability.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated at the component level.
FAQ
What is the maximum clamping voltage of SMBJ17C-E3/52 under a 10/1000 µs surge?
The SMBJ17C-E3/52 has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current of 21.7 A using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88392. The SMBJ17C-E3/52 maintains this clamping performance across its full operating temperature range.
Is SMBJ17C-E3/52 RoHS-compliant and halogen-free?
Yes, SMBJ17C-E3/52 is RoHS-compliant per EU Directive 2011/65/EU and uses halogen-free molding compound meeting IEC 61249-2-21 requirements. The "E3" suffix explicitly denotes commercial-grade, RoHS-compliant construction with matte tin-plated leads. Vishay confirms this in the Mechanical Data section of the SMBJ5.0A–SMBJ188A datasheet.
Does SMBJ17C-E3/52 meet AEC-Q101 qualification?
No, SMBJ17C-E3/52 is not AEC-Q101 qualified. It is a commercial-grade part. For automotive applications requiring AEC-Q101, select the SMBJ17CHE3 variant (e.g., SMBJ17CHE3_B/H), which shares identical electrical specs but undergoes additional stress testing per AEC-Q101 Rev D. The SMBJ17C-E3/52 remains suitable for non-automotive industrial and consumer use.
What is the thermal resistance of SMBJ17C-E3/52, and how does it affect layout?
The SMBJ17C-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC-compliant land patterns. To maintain TJ ≤ 150 °C at full 600 W pulse, PCB copper area and layer stackup must be validated - undersized pads will cause premature thermal shutdown or parametric shift. The SMBJ17C-E3/52 datasheet specifies exact pad dimensions in Figure "Mounting Pad Layout".
How does SMBJ17C-E3/52 differ from SMBJ17A-E3/52?
SMBJ17C-E3/52 and SMBJ17A-E3/52 are functionally identical in electrical specifications (VWM, VBR, VC, PPPM), package (SMB), and marking (both use "LR"). The "C" suffix is Vishay's internal designation for the same unidirectional die used in the "A"-suffixed family. No performance, reliability, or qualification differences exist between SMBJ17C-E3/52 and SMBJ17A-E3/52 - they are interchangeable in all commercial applications.
SMBJ17C-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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.5V
- Current - Peak Pulse (10/1000µs):
- 19.7A
- 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)
SMBJ17C-E3/52 FAQ
1.How can I place an order for SMBJ17C-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17C-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 SMBJ17C-E3/52 reliable?
The price and inventory of SMBJ17C-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 SMBJ17C-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ17C-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17C-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17C-E3/52?
SMBJ17C-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17C-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 SMBJ17C-E3/52?
For technical support, including SMBJ17C-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17C-E3/52 requirements.
6.How does Aetrix verify that SMBJ17C-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ17C-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 SMBJ17C-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ17C-E3/52?
All SMBJ17C-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17C-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 SMBJ17C-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ17C-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17C-E3/52 Tags
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