My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ17HE3/52
;;2.jpg)
- Part No.:
- SMBJ17HE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17HE3/52.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,050
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ17HE3/52 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 sensitive electronics. It features a 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 27.6 V at 21.7 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMBJ17HE3/52 datasheet, SMBJ17HE3/52 pinout, SMBJ17HE3/52 application, or SMBJ17HE3/52 equivalent, key selection criteria include unidirectional polarity, 27.6 V clamping performance under 21.7 A surge, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, conducting only when reverse voltage exceeds VBR to divert transient energy away from downstream components. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1.0 ps), critical for suppressing ESD and inductive switching spikes.
The SMBJ17HE3/52 is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports operating junction temperatures from –55 °C to +150 °C, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its cathode-band marking identifies polarity for correct PCB orientation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 18.9 V / 20.9 V at 1 mA - guaranteed breakdown range defining turn-on threshold |
| VC @ IPPM | 27.6 V at 21.7 A - clamped voltage during 600 W transient, limiting stress on protected ICs |
| PPPM | 600 W (10/1000 µs waveform) - peak surge energy handling capacity for lightning/inductive transients |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| TJ max. | +150 °C - enables deployment in under-hood automotive or industrial environments |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD footprint compatible with high-volume pick-and-place |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (cathode-biased during clamping) | Connected to ground or low-impedance return path to sink transient current |
| Cathode | Protected line connection point (marked with band) | Connected to I/O line or power rail requiring overvoltage protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive ECUs, infotainment, and ADAS modules requiring zero-failure operation |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without degradation |
| Glass-passivated junction | Ensures stable VBR and low leakage across temperature and lifetime, reducing field failure risk |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns or baking requirements |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD >15 kV contact discharge) |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V power rails in body control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Clamps 12 V rail to ≤27.6 V during 600 W surges, preventing damage to LDOs and microcontrollers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in PLC I/O modules. IC Role / Device Role / Timing Role: Parallel-connected TVS on 4–20 mA or 0–10 V signal lines exposed to field wiring noise. Use Value: Sub-1 ns response limits voltage excursion to <28 V, preserving ADC accuracy and isolator integrity. |
| Consumer USB Port ESD Protection | Telecom Ethernet PHY Protection |
|
Use Scenario: Secondary-level ESD protection on USB VBUS and D+/D− lines in portable chargers and hubs. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing ±15 kV contact discharge per IEC 61000-4-2. Use Value: 1.0 µA leakage at 17 V avoids loading USB enumeration circuits; 27.6 V clamping prevents PHY latch-up. |
Use Scenario: Surge suppression on RJ45 magnetics secondary side in PoE-powered network switches. IC Role / Device Role / Timing Role: Unidirectional clamp on data pair lines referenced to local ground plane. Use Value: Withstands 10/1000 µs surges up to 600 W while maintaining signal integrity below 100 MHz bandwidth. |
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 | Commercial-grade (non-AEC-Q101); identical electrical specs and SMB package | Lacks automotive qualification; suitable for consumer/industrial but not automotive Tier-1 designs | Select SMBJ17A-E3/52 for cost-sensitive non-automotive applications where AEC-Q101 is not mandated. |
| SMBJ17CAHE3/52 | Bidirectional variant; symmetric VBR (18.9–20.9 V) in both polarities; same PPPM and VC | Protects AC-coupled or differential signal lines (e.g., RS-485, CAN) without polarity constraints | Choose SMBJ17CAHE3/52 when protecting bidirectional interfaces or where reverse-voltage transients are possible. |
Compared with SMBJ17A-E3/52, the SMBJ17HE3/52 adds AEC-Q101 qualification without sacrificing clamping performance; versus SMBJ17CAHE3/52, it provides lower capacitance and optimized unidirectional clamping for DC power/signal rails.
Availability
SMBJ17HE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, and telecom power supply designs requiring stable component supply, AEC-Q101 compliance, and repeatable 600 W surge immunity.
Supply support for SMBJ17HE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and communications systems where robustness and qualification compliance are mandatory.
FAQ
What is the clamping voltage of SMBJ17HE3/52 and how is it measured?
The SMBJ17HE3/52 has a maximum clamping voltage (VC) of 27.6 V, measured at a peak pulse current (IPPM) of 21.7 A using a 10/1000 µs waveform. This value represents the upper voltage limit imposed on protected circuitry during a standardized surge event, ensuring downstream components remain within safe operating limits. The SMBJ17HE3/52 achieves this clamping performance consistently across its qualified temperature range.
Is SMBJ17HE3/52 suitable for automotive applications?
Yes, SMBJ17HE3/52 is AEC-Q101 qualified, making it suitable for automotive applications including engine control units, body electronics, and infotainment systems. Its construction includes glass-passivated junctions, MSL Level 1 moisture sensitivity rating, and operation up to +150 °C junction temperature-key requirements for under-hood and chassis-mounted deployments. The SMBJ17HE3/52 meets these standards without derating.
How does SMBJ17HE3/52 differ from SMBJ17A-E3/52?
The SMBJ17HE3/52 and SMBJ17A-E3/52 share identical electrical characteristics (VWM = 17 V, VC = 27.6 V, PPPM = 600 W) and SMB package, but SMBJ17HE3/52 carries AEC-Q101 qualification while SMBJ17A-E3/52 is commercial-grade. This distinction validates SMBJ17HE3/52 for automotive production use, whereas SMBJ17A-E3/52 is intended for industrial or consumer applications where automotive qualification is not required.
What is the thermal resistance of SMBJ17HE3/52 and how does it affect layout?
The SMBJ17HE3/52 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 per terminal. This value assumes minimum recommended pad layout; larger copper areas reduce RθJA and improve power dissipation capability. For sustained surge duty cycles, designers should verify junction temperature rise using SMBJ17HE3/52's 5.0 W steady-state power rating and actual board thermal design.
Can SMBJ17HE3/52 be used for bidirectional signal line protection?
No, SMBJ17HE3/52 is a unidirectional TVS diode and must be used with correct polarity-cathode connected to the protected line, anode to ground. For bidirectional signal lines such as RS-485 or CAN, the bidirectional variant SMBJ17CAHE3/52 is required. Using SMBJ17HE3/52 on AC-coupled or reversible signals risks improper clamping or device failure during negative transients.
SMBJ17HE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ17HE3/52 FAQ
1.How can I place an order for SMBJ17HE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17HE3/52 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 SMBJ17HE3/52 reliable?
The price and inventory of SMBJ17HE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ17HE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ17HE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17HE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17HE3/52?
SMBJ17HE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17HE3/52 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 SMBJ17HE3/52?
For technical support, including SMBJ17HE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17HE3/52 requirements.
6.How does Aetrix verify that SMBJ17HE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ17HE3/52 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 SMBJ17HE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ17HE3/52?
All SMBJ17HE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17HE3/52, 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 SMBJ17HE3/52 part is unused and in its original packaging.
Return procedure for SMBJ17HE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17HE3/52 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
