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Vishay General Semiconductor - Diodes Division SMBJ17AHE3_A/H
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- Part No.:
- SMBJ17AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17AHE3_A/H.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,687
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Product details
Overview
SMBJ17AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features 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 (IPPM), and 600 W peak pulse power (10/1000 µs waveform), used in automotive power rail protection and industrial sensor interface circuits.
For engineers reviewing the SMBJ17AHE3_A/H datasheet, SMBJ17AHE3_A/H pinout, SMBJ17AHE3_A/H application, or SMBJ17AHE3_A/H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (−55 to +150 °C), and real-world use cases in automotive electronics and industrial I/O protection.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for low-inductance PCB layout via its SMB package. Its glass-passivated junction enables stable breakdown behavior under repetitive 10/1000 µs surges at 0.01% duty cycle, while meeting MSL Level 1 per J-STD-020 with 260 °C reflow peak.
The SMBJ17AHE3_A/H exhibits 1.0 µA max reverse leakage at 17 V (VWM), 0.090 %/°C temperature coefficient of VBR, and 20 °C/W junction-to-lead thermal resistance - enabling effective thermal management when mounted on 5.0 mm × 5.0 mm copper pads per Vishay's recommended layout.
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 IT = 1 mA - Confirmed breakdown threshold range ensuring reliable turn-on during transients. |
| VC @ IPPM | 27.6 V at 21.7 A - Clamped voltage seen by protected circuit during 600 W surge; limits downstream stress. |
| PPPM | 600 W (10/1000 µs) - Peak surge energy handling capability under standardized lightning/surge test waveform. |
| TJ max. | +150 °C - Maximum junction temperature rating supporting operation in under-hood automotive environments. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; requires adequate copper area for sustained power dissipation. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), MSL Level 1, 260 °C reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point | Connected to protected line; clamps positive transients to ground when anode is grounded. |
| Anode (non-banded end) | Reference/ground node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth) without degradation in standard PCB layout. |
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics applications requiring extended temperature and lifetime reliability. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot during fast transients, protecting sensitive 3.3 V or 5 V logic interfaces downstream. |
| MSL Level 1 moisture sensitivity | Enables direct placement into high-volume SMT lines without baking or special handling prior to reflow. |
| Glass passivated junction | Ensures stable VBR over time and temperature, reducing parameter drift in harsh industrial environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp positive surges above 17 V. Use Value: Limits peak voltage to ≤27.6 V during 21.7 A transients, preventing damage to LDOs and microcontrollers. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected across signal and return lines to absorb sub-100 ns ESD pulses. Use Value: Sub-1 ns response time and 1.0 µA leakage preserve signal integrity and measurement accuracy. |
| Telecom Interface Surge Suppression | Consumer Device USB Port Protection |
|
Use Scenario: Safeguarding RS-485 transceivers in building automation networks exposed to induced lightning surges. IC Role / Device Role / Timing Role: Bidirectional-capable variant family member used in unidirectional configuration on VCC-supplied bus lines. Use Value: 600 W rating handles multi-kV common-mode surges without failure, maintaining communication uptime. |
Use Scenario: Adding secondary-level surge defense on USB VBUS lines in smart home hubs after primary fusing. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing hot-plug spikes and contact ESD before reaching USB controller IC. Use Value: 17 V VWM avoids false triggering during normal 5 V operation while clamping >27 V transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17AHM3_A/H | Halogen-free version of same electrical specs; identical VWM, VBR, VC, and PPPM ratings. | No difference in circuit function or layout; selected where halogen-free compliance is mandated. | Choose SMBJ17AHM3_A/H when RoHS + halogen-free material declaration is required for final product certification. |
| SMAJ17AHE3_A/H | Lower 400 W PPPM rating; higher RθJA (150 °C/W); SMA package (smaller footprint, lower surge capacity). | Not suitable for 600 W surge environments; limited to lower-energy transients or space-constrained designs. | Select SMBJ17AHE3_A/H over SMAJ17AHE3_A/H when full 600 W IEC 61000-4-5 compliance is required. |
Compared with SMBJ17AHM3_A/H, the SMBJ17AHE3_A/H offers identical protection performance with standard RoHS compliance; versus SMAJ17AHE3_A/H, it delivers 50% higher surge power handling and superior thermal dissipation in the larger SMB package.
Availability
SMBJ17AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom infrastructure requiring stable component supply with AEC-Q101 qualification and long-term lifecycle support.
Supply support for SMBJ17AHE3_A/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, MOSFETs, and protection devices with emphasis on reliability and application-specific validation.
The SMBJ series is engineered for robust transient suppression in automotive, industrial, and communications systems - delivering consistent clamping performance across temperature and lifetime under real-world surge stress.
FAQ
What is the clamping voltage of SMBJ17AHE3_A/H at its rated peak pulse current?
The SMBJ17AHE3_A/H has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current (IPPM) of 21.7 A under the 10/1000 µs waveform. This value is measured per JEDEC standards and ensures downstream components see no more than 27.6 V during surge events. The SMBJ17AHE3_A/H maintains this clamping performance across its full operating temperature range (−55 to +150 °C).
Is SMBJ17AHE3_A/H qualified for automotive applications?
Yes, SMBJ17AHE3_A/H is AEC-Q101 qualified, meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD robustness required for automotive electronics. The "HE3" suffix explicitly denotes AEC-Q101 qualification, making SMBJ17AHE3_A/H suitable for engine control units, body modules, and ADAS sensor interfaces where reliability under thermal and electrical stress is critical.
What does the "HE3" suffix mean in SMBJ17AHE3_A/H?
The "HE3" suffix in SMBJ17AHE3_A/H indicates RoHS-compliant construction with AEC-Q101 qualification. "H" denotes AEC-Q101 qualification, "E3" specifies commercial-grade RoHS compliance (lead-free, matte tin plating). This distinguishes it from "HM3" (halogen-free + AEC-Q101) and base "E3" (RoHS only, non-automotive). The SMBJ17AHE3_A/H meets both environmental and automotive reliability requirements simultaneously.
How does SMBJ17AHE3_A/H compare to bidirectional variants like SMBJ17CA?
The SMBJ17AHE3_A/H is unidirectional, with polarity marked by a cathode band, and clamps only positive transients relative to ground. In contrast, SMBJ17CA is bidirectional and symmetrically clamps both polarities. For single-polarity DC rails (e.g., 12 V automotive supplies), SMBJ17AHE3_A/H provides tighter leakage control (1.0 µA vs. 2.0 µA for SMBJ17CA) and avoids unnecessary capacitance doubling - making SMBJ17AHE3_A/H preferred for power-line protection where polarity is fixed.
What PCB layout guidance applies to SMBJ17AHE3_A/H for optimal surge performance?
Vishay specifies mounting SMBJ17AHE3_A/H on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and thermal performance. Short, wide traces to ground minimize inductance and prevent voltage overshoot during fast transients. Avoid thermal relief on pads - solid copper connections are required. The SMBJ17AHE3_A/H's low RθJL (20 °C/W) relies on this layout to dissipate surge energy effectively without exceeding TJ max.
SMBJ17AHE3_A/H 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:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ17AHE3_A/H FAQ
1.How can I place an order for SMBJ17AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17AHE3_A/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_A/H reliable?
The price and inventory of SMBJ17AHE3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ17AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17AHE3_A/H?
SMBJ17AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17AHE3_A/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_A/H?
For technical support, including SMBJ17AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17AHE3_A/H requirements.
6.How does Aetrix verify that SMBJ17AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ17AHE3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ17AHE3_A/H?
All SMBJ17AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17AHE3_A/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_A/H part is unused and in its original packaging.
Return procedure for SMBJ17AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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