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Vishay General Semiconductor - Diodes Division SMBJ17AHE3/5B
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- Part No.:
- SMBJ17AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17AHE3/5B.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,464
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Product details
Overview
SMBJ17AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 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 rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ17AHE3/5B datasheet, SMBJ17AHE3/5B pinout, SMBJ17AHE3/5B application, or SMBJ17AHE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), junction temperature range (–55 to +150 °C), and packaging details for tape-and-reel delivery (3200 pcs per 13" reel).
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for fast response (<1 ps) and low incremental surge resistance. Its 10/1000 µs waveform rating reflects standardized lightning-surge immunity testing per ANSI/IEEE C62.35.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it meets MSL Level 1 per J-STD-020, supports 260 °C lead-free reflow, and achieves 100 A IFSM (8.3 ms half-sine) - enabling robust protection against inductive switching spikes and ESD events in automotive-grade power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected circuitry |
| VBR (min/max) | 18.9 V / 20.9 V at IT = 1 mA - precise breakdown threshold ensuring predictable turn-on during overvoltage events |
| VC @ IPPM | 27.6 V at 21.7 A - clamped voltage seen by downstream components during 600 W transient, limiting stress on 24 V systems |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform, supporting IEC 61000-4-5 Level 4 surge immunity |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on standard PCB pad layout, guiding heatsinking requirements |
| TJ range | –55 °C to +150 °C - extended junction temperature capability enabling use in under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - validated for automotive electronics per stress-test requirements including HTOL, TCT, and ESD HBM/MM |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), MSL Level 1, 260 °C peak reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VWM exceeded - must be routed with low-inductance path |
| Anode | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity up to 4 kV in 2 Ω/12 Ω source impedance configurations |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive powertrain and body electronics where reliability across temperature cycling and humidity is mandatory |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage overshoot during fast transients, reducing risk of gate oxide damage in MOSFETs and logic ICs |
| MSL Level 1, 260 °C compatible | Supports standard lead-free SMT reflow without preconditioning, eliminating moisture-related popcorning failures |
| Glass passivated junction | Ensures stable leakage performance (<1 µA at VWM) and long-term reliability under high-humidity operating conditions |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground, clamping surges before they reach LDOs and microcontrollers. Use Value: Withstand 600 W pulses while holding clamped voltage below 28 V - preserving 30 V-rated downstream components. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended signal lines, minimizing signal distortion. Use Value: Sub-1 µA leakage at 17 V ensures minimal impact on µA-level sensor bias currents and measurement accuracy. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Clamping |
|
Use Scenario: Safeguarding PoE-powered devices (e.g., IP cameras) against induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus, coordinated with upstream MOVs. Use Value: Fast <1 ps response time limits voltage rise before protection ICs activate, preventing latch-up in Ethernet PHYs. |
Use Scenario: Secondary-side transient suppression in AC/DC adapters supplying USB-C PD or 5 V/12 V peripherals. IC Role / Device Role / Timing Role: Final-stage TVS on regulated output, absorbing coupling noise from transformer leakage and rectifier switching. Use Value: 27.6 V clamping voltage prevents overvoltage on 5 V/12 V loads even during 200 V surge events on primary side. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17AHM3/5B | Halogen-free variant with identical electrical specs and AEC-Q101 qualification; same SMB package and pinout | Required where halogen-free compliance (IEC 61249-2-21) is mandated in automotive or green-electronics programs | Select SMBJ17AHM3/5B when material declarations require bromine/chlorine restriction beyond RoHS |
| SMAJ17AHE3/A | Lower 400 W PPPM, SMA (DO-214AC) package (smaller footprint), same VWM/VC but higher RθJA (140 °C/W) | Suitable for space-constrained consumer designs where 600 W surge margin is not required | Choose SMAJ17AHE3/A only if board area is critical and peak surge energy remains ≤400 W |
Compared with SMBJ17AHE3/5B, SMBJ17AHM3/5B offers identical protection performance with halogen-free assurance, while SMAJ17AHE3/A trades 33 % lower surge capacity and higher thermal resistance for 30 % smaller PCB area - making SMBJ17AHE3/5B optimal for automotive and industrial applications demanding full 600 W immunity and AEC-Q101 traceability.
Availability
SMBJ17AHE3/5B is available at Aetrix Electronics and suitable for automotive power modules, industrial sensor nodes, telecom DC inputs, and consumer power adapter designs requiring stable component supply with AEC-Q101 validation and full traceability.
Supply support for SMBJ17AHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated across wide temperature and surge profiles.
FAQ
What is the maximum clamping voltage of SMBJ17AHE3/5B at its rated peak pulse current?
The SMBJ17AHE3/5B has a maximum clamping voltage (VC) of 27.6 V at its rated peak pulse current (IPPM) of 21.7 A, measured using the standardized 10/1000 µs double-exponential waveform. This value ensures protected circuits remain within safe operating limits during surge events - a key parameter verified per ANSI/IEEE C62.35 and reflected in Vishay's official datasheet revision 09-Jan-2024.
Is SMBJ17AHE3/5B qualified for automotive applications?
Yes, SMBJ17AHE3/5B is AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in Vishay's SMBJ5.0A–SMBJ188A datasheet (Document Number: 88392). This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), and human-body-model ESD - making SMBJ17AHE3/5B suitable for under-hood and body-control module deployments.
What does the "5B" in SMBJ17AHE3/5B indicate?
The "5B" in SMBJ17AHE3/5B denotes the preferred package code specifying 13-inch diameter plastic tape-and-reel delivery with 3200 units per reel, per Vishay's ordering information table. It does not affect electrical or thermal specifications - SMBJ17AHE3/5B shares identical performance with SMBJ17AHE3/52 (7-inch reel, 750 pcs) and other HE3 variants.
How does SMBJ17AHE3/5B differ from bidirectional versions like SMBJ17CA?
SMBJ17AHE3/5B is unidirectional, with polarity marked by a cathode band and intended for DC line protection where reverse conduction is not required. In contrast, SMBJ17CA is bidirectional, symmetrical in both directions, and used in AC-coupled or floating signal paths. Their VBR, VC, and PPPM values differ slightly due to structural asymmetry - SMBJ17AHE3/5B cannot substitute for SMBJ17CA without circuit redesign.
What is the thermal resistance and recommended pad layout for SMBJ17AHE3/5B?
SMBJ17AHE3/5B 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, as specified in Vishay's datasheet Figure 2 and Thermal Characteristics table. Deviating from this pad size increases thermal impedance and may reduce surge endurance - especially critical in high-duty-cycle industrial applications.
SMBJ17AHE3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMBJ17AHE3/5B FAQ
1.How can I place an order for SMBJ17AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17AHE3/5B 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 SMBJ17AHE3/5B reliable?
The price and inventory of SMBJ17AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ17AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ17AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17AHE3/5B?
SMBJ17AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17AHE3/5B 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 SMBJ17AHE3/5B?
For technical support, including SMBJ17AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17AHE3/5B requirements.
6.How does Aetrix verify that SMBJ17AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ17AHE3/5B 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 SMBJ17AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ17AHE3/5B?
All SMBJ17AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17AHE3/5B, 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 SMBJ17AHE3/5B part is unused and in its original packaging.
Return procedure for SMBJ17AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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