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Vishay General Semiconductor - Diodes Division SMBJ17AHE3_B/H
- Part No.:
- SMBJ17AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17AHE3_B/H.pdf
- Description:
- 600W,17V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,508
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Product details
Overview
SMBJ17AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the 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 standoff 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 dissipation with a 10/1000 µs waveform - deployed on IC power rails, MOSFET gate drivers, and sensor signal lines in industrial and automotive systems.
For engineers reviewing the SMBJ17AHE3_B/H datasheet, SMBJ17AHE3_B/H pinout, SMBJ17AHE3_B/H application, or SMBJ17AHE3_B/H equivalent, this AEC-Q101 qualified TVS offers verified clamping performance, low incremental surge resistance, and RoHS-compliant matte tin-plated leads suitable for automated SMT assembly and high-reliability end equipment.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 µA leakage at 17 V), but triggers into low-impedance conduction when transient voltage exceeds its 18.9 V minimum breakdown threshold. Its 20 °C/W junction-to-lead thermal resistance enables effective heat dissipation during repetitive surge events.
The device complies with ANSI/IEEE C62.35 standards for transient suppression and meets J-STD-020 MSL Level 1 moisture sensitivity with 260 °C lead-free reflow compatibility. Its glass-passivated junction ensures stable VBR tolerance and long-term reliability across -55 °C to +150 °C operating junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 17 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping onset. |
| VBR (Breakdown Voltage) | 18.9–20.9 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 27.6 V at 21.7 A (10/1000 µs) - Peak voltage seen by protected circuit during rated surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling capability without failure; validated per IEC 61000-4-5 surge standard waveforms. |
| IPPM (Peak Pulse Current) | 21.7 A - Maximum non-repetitive surge current the device safely clamps; directly derived from VC and PPPM. |
| TJmax | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial ambient environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on one end. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or common return path; completes clamping loop during transient conduction. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 12 V rail, sensor output); carries full surge current during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - required for engine control, ADAS, and body electronics. |
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 (4 kV) surges without derating in typical PCB layouts. |
| 27.6 V clamping at 21.7 A | Limits voltage overshoot on 12 V systems to <2.3× nominal rail, safeguarding 30 V-rated MOSFETs and microcontrollers. |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free assembly without preconditioning; eliminates moisture-related popcorning risk. |
| Glass-passivated junction | Ensures ±5 % VBR stability over 1000-hour HTOL testing and prevents parameter drift in humid environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Suppressing load-dump transients on 12 V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp spikes up to 35 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies and CAN transceivers during alternator regulation faults. |
Use Scenario: Shielding 4–20 mA current-loop outputs of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) TVS connected across signal and return lines to absorb ESD and switching noise. Use Value: Maintains analog accuracy by limiting transient-induced offset errors to <0.5 % full scale during 8 kV contact ESD events. |
| DC-DC Converter Input Protection | MOSFET Gate Driver Transient Suppression |
|
Use Scenario: Safeguarding buck converter inputs fed from unregulated 24 V industrial supplies subject to relay bounce. IC Role / Device Role / Timing Role: Standoff-rated TVS upstream of input capacitor to divert >100 V spikes before they reach controller IC. Use Value: Eliminates need for oversized input capacitors and extends lifetime of 30 V-rated FETs and PWM controllers. |
Use Scenario: Clamping Miller-induced voltage spikes on high-side N-channel MOSFET gates driven by half-bridge ICs. IC Role / Device Role / Timing Role: Fast-response TVS tied between gate and source to limit dV/dt-induced shoot-through risks. Use Value: Reduces gate oxide stress and prevents false turn-on during 50 ns rise-time switching transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17AHM3_B/H | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU automotive Tier 1 programs). | Direct substitution if halogen-free bill-of-materials is required; same footprint, thermal, and electrical behavior. |
| SMCJ17AHE3_A/H | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package with 1500 W PPPM and higher IPPM (43.3 A). | Used where higher surge margin is needed (e.g., outdoor telecom power interfaces), but requires larger PCB area and different pad layout. | Choose when system-level surge testing exceeds 600 W requirements; not pin-compatible due to larger package and lead spacing. |
Compared with SMBJ17AHE3_B/H, the HM3 variant offers identical protection performance with halogen-free construction, while the SMCJ17AHE3_A/H delivers double the surge power in a physically incompatible package - making the former a seamless drop-in alternative and the latter a higher-capacity redesign option.
Availability
SMBJ17AHE3_B/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor modules, DC-DC converter inputs, and MOSFET gate driver circuits requiring stable component supply with AEC-Q101 traceability and RoHS compliance.
Supply support for SMBJ17AHE3_B/H 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, efficiency, and application-specific optimization.
The SMBJ series was engineered for high-volume surface-mount transient protection in automotive, industrial, and communications infrastructure - balancing compact size, AEC-Q101 validation, and repeatable clamping performance across temperature and life cycles.
FAQ
What is the maximum clamping voltage of SMBJ17AHE3_B/H at its rated peak pulse current?
The SMBJ17AHE3_B/H has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated 21.7 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components like 30 V MOSFETs remain within safe operating area. The SMBJ17AHE3_B/H maintains this clamping performance across its full -55 °C to +150 °C operating junction temperature range.
Is SMBJ17AHE3_B/H suitable for automotive applications?
Yes, SMBJ17AHE3_B/H is AEC-Q101 qualified and explicitly designated for automotive use with suffix "HE3" indicating RoHS-compliant and AEC-Q101 qualified construction. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and surge endurance - making it appropriate for engine control units, body electronics, infotainment power supplies, and ADAS sensor interfaces. The SMBJ17AHE3_B/H meets automotive-grade humidity resistance and solderability requirements per J-STD-002 and JESD22-B102.
What does the "_B/H" suffix mean in SMBJ17AHE3_B/H?
The "_B/H" suffix in SMBJ17AHE3_B/H denotes the packaging configuration: "H" specifies the preferred package code for 7-inch diameter plastic tape and reel, while "B" indicates the revision level of the manufacturing process or test specification per Vishay's internal documentation. This ordering code corresponds to a 750-unit reel quantity and is distinct from "_B/I" (13-inch reel, 3200 units) or "/52" (legacy tape code). The SMBJ17AHE3_B/H retains identical electrical and thermal characteristics regardless of reel format.
How does SMBJ17AHE3_B/H compare to bidirectional TVS diodes like SMBJ17CA?
The SMBJ17AHE3_B/H is unidirectional and intended for DC line protection where polarity is fixed (e.g., 12 V power rails), whereas SMBJ17CA is bidirectional and suited for AC or floating signal lines (e.g., RS-485, audio). The SMBJ17AHE3_B/H exhibits forward conduction below ~1.2 V like a standard diode, while SMBJ17CA clamps symmetrically in both directions with no forward voltage drop. Their VBR, VC, and PPPM values are otherwise matched - but substituting one for the other requires verifying circuit polarity and grounding topology to avoid unintended conduction paths.
What is the thermal resistance from junction to ambient for SMBJ17AHE3_B/H?
The SMBJ17AHE3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes no additional heatsinking and defines the steady-state temperature rise above ambient at 5.0 W continuous power dissipation. For pulsed surge conditions, the transient thermal impedance is significantly lower - enabling the SMBJ17AHE3_B/H to handle 600 W peaks without exceeding its +150 °C TJmax limit, provided duty cycle remains ≤0.01 %.
SMBJ17AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ17AHE3_B/H FAQ
1.How can I place an order for SMBJ17AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17AHE3_B/H 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 SMBJ17AHE3_B/H reliable?
The price and inventory of SMBJ17AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ17AHE3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ17AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17AHE3_B/H?
SMBJ17AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17AHE3_B/H 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 SMBJ17AHE3_B/H?
For technical support, including SMBJ17AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17AHE3_B/H requirements.
6.How does Aetrix verify that SMBJ17AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ17AHE3_B/H 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 SMBJ17AHE3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ17AHE3_B/H?
All SMBJ17AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17AHE3_B/H, 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 SMBJ17AHE3_B/H part is unused and in its original packaging.
Return procedure for SMBJ17AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17AHE3_B/H Tags
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