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Vishay General Semiconductor - Diodes Division SMBJ17-E3/52
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- Part No.:
- SMBJ17-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17-E3/52.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,731
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Product details
Overview
SMBJ17-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (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.
For engineers reviewing the SMBJ17-E3/52 datasheet, SMBJ17-E3/52 pinout, SMBJ17-E3/52 application, or SMBJ17-E3/52 equivalent, key selection criteria include clamping performance under 21.7 A surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a fast-acting shunt protector, leveraging an avalanche breakdown mechanism to clamp transient overvoltages before they reach downstream ICs or MOSFETs. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and repeatable breakdown behavior across temperature (-55 °C to +150 °C).
The device is rated for 600 W peak pulse power (10/1000 μs), 100 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits low incremental surge resistance - critical for limiting let-through energy during ESD or lightning-induced transients on power rails and signal lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR (min/max) | 18.9 V / 20.9 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on during transients without premature conduction. |
| VC @ IPPM | 27.6 V at 21.7 A - Clamping voltage under full-rated 600 W surge; determines maximum stress imposed on protected circuitry. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; validates robustness against common industrial surge events. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); supports protection of power inputs subject to high-energy line disturbances. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in high-ambient environments like automotive engine bays or industrial enclosures. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard 5.0 mm × 5.0 mm pads; informs derating requirements above 25 °C ambient. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or lower-potential rail in unidirectional configuration; must be routed with low-inductance path for effective clamping. |
| Cathode | Current exit point during forward conduction; marked with band | Connected to protected line (e.g., 17 V supply rail); clamping occurs when cathode-to-anode voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Validated energy absorption capacity for IEC 61000-4-5 Level 3/4 surge immunity compliance in industrial power supplies. |
| 27.6 V clamping voltage at 21.7 A | Ensures protected 17 V rail stays below 28 V during worst-case surge, safeguarding 30 V-rated MOSFETs and logic interfaces. |
| 1.0 μA max reverse leakage at VWM | Minimizes standby power loss and avoids false triggering in battery-powered or low-power sensor nodes. |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture sensitivity concerns or baking requirements. |
| AEC-Q101 qualification option (HE3 suffix) | Supports automotive-grade deployment in body control modules and infotainment power rails where reliability validation is mandatory. |
Applications
| Industrial Power Input Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: 24 V DC input rail in programmable logic controllers exposed to relay coil flyback and motor drive switching noise. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between +24 V and GND, clamping transients within nanoseconds. Use Value: Limits let-through voltage to ≤27.6 V during 21.7 A surges, preventing latch-up or gate oxide damage in upstream DC/DC controllers. |
Use Scenario: 12 V supply line feeding microcontroller and CAN transceiver in door module subjected to load dump and jump-start events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail, coordinated with upstream fuse and secondary LC filtering. Use Value: Withstands 100 A 8.3 ms surge and maintains <1.0 μA leakage, preserving sleep-mode current budget while meeting ISO 7637-2 Pulse 5a requirements. |
| Telecom Line Interface Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: DC bias feed line to PoE-powered Ethernet PHY ICs vulnerable to induced surges from nearby AC wiring. IC Role / Device Role / Timing Role: Standoff-limited TVS on 48 V bias rail, selected for tight VWM/VC margin to avoid interference with normal operation. Use Value: 17 V VWM allows clean 48 V operation; 27.6 V clamping prevents PHY damage during 10/1000 μs telecom surges up to 600 W. |
Use Scenario: H-bridge gate driver supply rail in smart washing machine MCU board, exposed to brush motor commutation spikes. IC Role / Device Role / Timing Role: Localized rail clamp adjacent to gate driver IC, minimizing trace inductance to achieve sub-1 ns response. Use Value: Fast avalanche response and low Rsurge limit voltage overshoot to <28 V, protecting 30 V-rated driver outputs without adding bulk capacitance. |
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 | Same electrical specs and package; identical marking code "LR" per Vishay datasheet Table 1. | No functional difference; "SMBJ17A-E3/52" is the standardized base part number; "SMBJ17-E3/52" is legacy ordering variant. | Select SMBJ17A-E3/52 for new designs to align with current Vishay documentation and inventory systems. |
| SMCJ17A-E3/57 | Same VWM, VBR, VC, but in larger SMC (DO-214AB) package with 1500 W PPPM rating and RθJA = 50 °C/W. | Higher power handling and better thermal performance, but requires larger PCB area and different pad layout. | Choose SMCJ17A-E3/57 only if system-level surge testing exceeds 600 W or ambient temperature consistently exceeds 85 °C. |
Compared with SMBJ17-E3/52, SMBJ17A-E3/52 offers identical protection performance with updated nomenclature, while SMCJ17A-E3/57 trades compact size for higher surge margin and improved thermal dissipation - making it suitable only when PCB space and thermal constraints permit.
Availability
SMBJ17-E3/52 is available at Aetrix Electronics and suitable for industrial power input protection, automotive body control modules, telecom line interface protection, and consumer appliance motor drive protection requiring stable component supply and consistent surge performance.
Supply support for SMBJ17-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, precision, and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in space-constrained surface-mount applications across automotive, industrial, and communications systems - prioritizing fast response, low clamping, and automated assembly compatibility.
FAQ
What is the clamping voltage of SMBJ17-E3/52 at its rated peak pulse current?
The SMBJ17-E3/52 has a maximum clamping voltage (VC) of 27.6 V at its rated peak pulse current (IPPM) of 21.7 A, measured using the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on the protected circuit during a full 600 W transient event and is confirmed in Vishay's datasheet Document Number 88392, page 2, Electrical Characteristics table.
Is SMBJ17-E3/52 RoHS-compliant and suitable for lead-free reflow?
Yes, SMBJ17-E3/52 is RoHS-compliant (per Vishay's "Base P/N-E3" designation) and qualified for lead-free reflow with MSL Level 1 rating and maximum peak temperature of 260 °C. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, enabling reliable single-pass assembly without pre-baking.
How does the breakdown voltage range of SMBJ17-E3/52 compare to its stand-off voltage?
The SMBJ17-E3/52 has a stand-off voltage (VWM) of 17 V and a guaranteed breakdown voltage (VBR) range of 18.9 V to 20.9 V at 1 mA test current. This 1.9–3.9 V margin ensures no conduction during normal operation while guaranteeing rapid, predictable avalanche turn-on when transients exceed the safe operating threshold.
Can SMBJ17-E3/52 be used in bidirectional protection circuits?
No, SMBJ17-E3/52 is a unidirectional TVS diode, identified by cathode band marking and specified only for single-polarity clamping. For bidirectional applications, Vishay specifies the CA-suffix variant (e.g., SMBJ17CA), which provides symmetrical clamping in both directions and uses different breakdown and leakage specifications.
What is the thermal resistance and maximum junction temperature of SMBJ17-E3/52?
The SMBJ17-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, and a maximum operating junction temperature (TJ) of +150 °C. These values are critical for derating power dissipation above 25 °C ambient and validating long-term reliability in enclosed or high-temperature environments.
SMBJ17-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:
- 1
- Bidirectional Channels:
- -
- 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)
SMBJ17-E3/52 FAQ
1.How can I place an order for SMBJ17-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17-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 SMBJ17-E3/52 reliable?
The price and inventory of SMBJ17-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 SMBJ17-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ17-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17-E3/52?
SMBJ17-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17-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 SMBJ17-E3/52?
For technical support, including SMBJ17-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17-E3/52 requirements.
6.How does Aetrix verify that SMBJ17-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ17-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 SMBJ17-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ17-E3/52?
All SMBJ17-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17-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 SMBJ17-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ17-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17-E3/52 Tags
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