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Vishay General Semiconductor - Diodes Division SMBJ17-E3/5B
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- Part No.:
- SMBJ17-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17-E3/5B.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,499
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Product details
Overview
SMBJ17-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range at 1 mA, 27.6 V maximum clamping voltage at 21.7 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial motor drives, automotive body control modules, and industrial sensor interfaces.
For engineers reviewing the SMBJ17-E3/5B datasheet, SMBJ17-E3/5B pinout, SMBJ17-E3/5B application, or SMBJ17-E3/5B equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, and RoHS-compliant commercial-grade sourcing context for production design-in.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified VBR range (18.9–20.9 V). Its low incremental surge resistance ensures minimal voltage overshoot during transient events, while fast response time (<1 ps) enables protection of sensitive downstream ICs like microcontrollers and CAN transceivers.
Thermal performance is defined by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), with junction temperature rated from –55 °C to +150 °C. The device meets MSL Level 1 per J-STD-020 and supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before conduction begins; sets upper limit for protected line's normal DC operation. |
| VBR @ IT = 1 mA | 18.9–20.9 V - Breakdown voltage range defining reliable avalanche initiation threshold under standardized test current. |
| VC @ IPPM = 21.7 A | 27.6 V - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream circuitry. |
| PPPM | 600 W - Peak pulse power handling capability; defines survivability against standardized lightning/surge waveforms. |
| IPPM | 21.7 A - Peak pulse current corresponding to VC; used with PCB trace impedance to estimate actual clamping margin. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; critical for thermal design margin at 5.0 W steady-state dissipation. |
| TJ max. | +150 °C - Maximum allowable junction temperature; constrains ambient operating range and power cycling endurance. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during forward-biased ESD events or fault conditions. |
| Cathode | Avalanche clamping terminal | Connected to protected line (e.g., 12 V rail); initiates controlled avalanche breakdown when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) on 12–24 V systems without external series impedance. |
| 27.6 V clamping voltage at 21.7 A | Provides ≥4.4 V margin below typical 32 V automotive load-dump tolerance, ensuring safe operation of 24 V-rated controllers. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead in high-volume SMT lines. |
| RoHS-compliant, halogen-free option available | E3 suffix confirms compliance with EU RoHS Directive 2011/65/EU and JEDEC J-STD-20E, supporting green product certification. |
| Low incremental surge resistance | Minimizes dynamic voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving protection fidelity for CMOS inputs. |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
|
Use Scenario: Protecting 12 V supply rail and LIN bus lines from load dump and inductive switching transients in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching MCU and LIN transceiver. Use Value: Maintains VC ≤ 27.6 V under 21.7 A surge, preserving 3.3 V/5 V logic supply integrity and preventing LIN physical layer latch-up. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to field-wiring transients and relay coil kickback. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between input terminal and common rail to absorb repetitive 10/1000 µs surges up to 600 W. Use Value: Enables >100,000 surge cycles at rated power due to low thermal resistance (RθJL = 20 °C/W), extending field reliability beyond IEC 61000-4-4 requirements. |
| Consumer Appliance Motor Drive | Telecom Power Supply Input |
|
Use Scenario: Suppressing commutation spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: TVS placed across motor terminals and on H-bridge supply rail to clamp inductive flyback energy during PWM switching. Use Value: Fast <1 ps response captures sub-microsecond spikes, preventing gate oxide damage to MOSFET drivers and maintaining EMC compliance. |
Use Scenario: Front-end transient suppression on 48 V telecom rectifier outputs feeding PoE injectors and baseband processors. IC Role / Device Role / Timing Role: Primary clamping device on DC output bus, coordinated with upstream MOVs to handle combined lightning and switching surge energy. Use Value: 17 V VWM allows stable operation across 48 V ±10 % input range while clamping to 27.6 V - compatible with 30 V-rated secondary-side regulators. |
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-E3/5B | Same electrical specs and package; identical marking code "LR" per Vishay datasheet Table 1. | No functional difference; "SMBJ17A" is the base part number; "SMBJ17-E3/5B" is full ordering code including packaging and compliance suffixes. | Select SMBJ17A-E3/5B when referencing Vishay's official base P/N nomenclature in BOMs and procurement systems. |
| SMCJ17A-E3/57T | Higher 1500 W PPPM, larger SMC (DO-214AB) package, same VWM/VC specs but 38.9 V clamping at 38.9 A. | Used where higher surge energy (e.g., IEC 61000-4-5 Level 5) or longer surge duration requires greater thermal mass. | Choose SMCJ17A-E3/57T only if system-level testing confirms need for >600 W rating; otherwise SMBJ17-E3/5B offers optimal size/power density. |
Compared with SMBJ17A-E3/5B (identical device), and SMCJ17A-E3/57T (higher-power SMC variant), SMBJ17-E3/5B delivers best-in-class 600 W surge handling in the smallest footprint suitable for space-constrained 12–24 V board-level protection, with no layout or thermal redesign needed versus legacy SMBJ designs.
Availability
SMBJ17-E3/5B is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and consumer appliance motor drive circuits requiring stable component supply and RoHS-compliant commercial-grade TVS diodes.
Supply support for SMBJ17-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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and industrial-grade qualification.
The SMBJ series was engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and long-term stability under thermal cycling are critical.
FAQ
What is the standoff voltage rating of SMBJ17-E3/5B?
The SMBJ17-E3/5B 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 is confirmed in Vishay's datasheet Document Number 88392, Table "ELECTRICAL CHARACTERISTICS", row for SMBJ17A. Exceeding 17 V triggers avalanche conduction, making SMBJ17-E3/5B ideal for protecting 12 V and 15 V power rails.
Does SMBJ17-E3/5B meet automotive qualification standards?
The SMBJ17-E3/5B is RoHS-compliant commercial-grade and not AEC-Q101 qualified; Vishay designates AEC-Q101 versions with HE3 or HM3 suffixes (e.g., SMBJ17HE3_B). SMBJ17-E3/5B is suitable for non-safety-critical automotive applications such as infotainment power rails or lighting controls where full automotive qualification is not mandated, but its thermal and surge performance aligns with many Tier 2 automotive use cases.
What is the clamping voltage of SMBJ17-E3/5B at its rated surge current?
The SMBJ17-E3/5B clamps to a maximum of 27.6 V when subjected to its peak pulse current (IPPM) of 21.7 A under the standard 10/1000 µs waveform. This clamping voltage is measured per ANSI/IEEE C62.35 and guarantees predictable overvoltage limiting for downstream components - a key parameter verified in Vishay's datasheet Figure 1 and Table 1 for SMBJ17A.
How does the SMBJ17-E3/5B package compare to SMA or SMC variants?
The SMBJ17-E3/5B uses the SMB (DO-214AA) package - smaller than SMC (DO-214AB) but larger than SMA (DO-214AC). Its dimensions (0.205" × 0.130") offer 600 W surge capability in a footprint optimized for automated placement and thermal pad area (0.2" × 0.2"). Unlike SMA, SMB supports higher power; unlike SMC, it saves board space - making SMBJ17-E3/5B the balanced choice for mid-power protection where size and performance must coexist.
Is SMBJ17-E3/5B unidirectional or bidirectional?
SMBJ17-E3/5B is a unidirectional TVS diode, indicated by the "A" suffix in its base designation SMBJ17A and confirmed by polarity marking (cathode band) on the device body. It conducts only in reverse bias during overvoltage events and blocks forward current - appropriate for DC power line protection. Bidirectional variants use "CA" suffix (e.g., SMBJ17CA) and lack polarity marking.
SMBJ17-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:
- 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-E3/5B FAQ
1.How can I place an order for SMBJ17-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17-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 SMBJ17-E3/5B reliable?
The price and inventory of SMBJ17-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 SMBJ17-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ17-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17-E3/5B?
SMBJ17-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17-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 SMBJ17-E3/5B?
For technical support, including SMBJ17-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17-E3/5B requirements.
6.How does Aetrix verify that SMBJ17-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ17-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 SMBJ17-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ17-E3/5B?
All SMBJ17-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17-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 SMBJ17-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ17-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17-E3/5B Tags
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