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Vishay General Semiconductor - Diodes Division SMBJ17CHE3/52
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- Part No.:
- SMBJ17CHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17CHE3/52.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,663
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Product details
Overview
SMBJ17CHE3/52 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 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 (IPPM), 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 SMBJ17CHE3/52 datasheet, SMBJ17CHE3/52 pinout, SMBJ17CHE3/52 application, or SMBJ17CHE3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, conducting only when transient voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1.0 µA at VWM), while the low RθJL (20 °C/W) enables effective thermal dissipation during repetitive surges.
The SMBJ17CHE3/52 is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits a +0.090 %/°C temperature coefficient of VBR - enabling predictable clamping behavior across -55 °C to +150 °C operating range without derating below 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 15–16 V DC rails. |
| VBR (min/max) | 18.9 V / 20.9 V at 1 mA - tight breakdown window ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | 27.6 V at 21.7 A - clamping voltage limits downstream component stress during 10/1000 µs transients. |
| PPPM | 600 W - peak pulse power handling capability with 0.01 % duty cycle; supports IEC 61000-4-5 Level 4 surge immunity. |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage preserves efficiency in battery-powered or high-impedance sensor circuits. |
| TJ max. | +150 °C - enables use in under-hood automotive modules and industrial motor drives with elevated ambient temperatures. |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline with 5.21 mm × 4.06 mm footprint and 2.20 mm height; compatible with J-STD-020 MSL level 1 reflow. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity indicated by cathode band. Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; establishes reference for clamping action. |
| Cathode | Protected line connection / transient sink | Connected to the line being protected (e.g., 12 V rail, USB VBUS); conducts surge current to anode during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control units and ADAS power domains. |
| 600 W peak pulse power (10/1000 µs) | Withstands repeated lightning-induced surges per IEC 61000-4-5 without degradation; supports >100,000 surge events at rated conditions. |
| Glass passivated chip junction | Ensures long-term stability of VBR and low leakage drift over 10+ years in harsh environments (humidity, thermal stress). |
| Low profile SMB package | Height ≤2.2 mm enables use in space-constrained PCB layouts such as portable medical devices and IoT edge nodes. |
| MSL level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling - reduces manufacturing cost and risk. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O against inductive kickback from relay coils and solenoid loads. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between 12 V supply rail and ground, absorbing 60–100 V transients within nanoseconds. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic inputs and MOSFET gate oxides during load dump or switch-off events. |
Use Scenario: Input protection for LIN bus transceivers and power management ICs in door module ECUs. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V input line, activated only during battery reverse connection or jump-start surges. Use Value: Maintains <1 µA leakage at 12 V to avoid battery drain while clamping to ≤27.6 V to preserve transceiver integrity. |
| Consumer Power Adapters | Industrial Sensor Signal Conditioning |
Use Scenario: Secondary-side overvoltage suppression on 5 V/9 V/12 V output rails of AC-DC adapters. IC Role / Device Role / Timing Role: Fast-response TVS parallel to output capacitor, limiting transient overshoot during short-circuit recovery or no-load transitions. Use Value: Limits output voltage excursion to <30 V during 10/1000 µs surges, preventing damage to connected USB peripherals or display controllers. |
Use Scenario: Protection of analog front-end inputs (e.g., 4–20 mA loop receivers, thermocouple amplifiers) against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on signal line with grounded anode, shunting transients before reaching precision op-amps. Use Value: Clamps 8 kV contact ESD pulses to <28 V while adding <0.5 pF parasitic capacitance - preserving signal bandwidth up to 1 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17AHE3/52 | No AEC-Q101 qualification; identical electrical specs and package. | Not approved for automotive production; suitable for commercial/industrial use only. | Select SMBJ17AHE3/52 if AEC-Q101 compliance is not required and cost optimization is prioritized. |
| SMAJ17AHE3/A | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 150 °C/W). | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Choose SMAJ17AHE3/A only for space-constrained consumer designs with <400 W surge requirements. |
Compared with SMBJ17AHE3/52 and SMAJ17AHE3/A, the SMBJ17CHE3/52 uniquely combines AEC-Q101 qualification, 600 W surge capacity, and SMB thermal performance - making it the only option qualified for automotive power domain protection where both reliability and energy handling are mandatory.
Availability
SMBJ17CHE3/52 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and consumer power adapters requiring stable component supply, long-lifecycle support, and traceable AEC-Q101-compliant sourcing.
Supply support for SMBJ17CHE3/52 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, rectifiers, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The SMBJ series was developed specifically for robust transient suppression in automotive and industrial power systems, balancing high surge capability, low clamping voltage, and AEC-Q101-compliant process control.
FAQ
What is the clamping voltage of SMBJ17CHE3/52 and how is it measured?
The SMBJ17CHE3/52 has a maximum clamping voltage (VC) of 27.6 V at 21.7 A peak pulse current (IPPM), tested with a 10/1000 µs waveform per IEC 61000-4-5. This value represents the upper limit of voltage seen by downstream components during a standardized surge event - critical for ensuring connected ICs remain within absolute maximum ratings. The SMBJ17CHE3/52 achieves this clamping performance due to its low incremental surge resistance and optimized silicon junction design.
Is SMBJ17CHE3/52 RoHS-compliant and halogen-free?
Yes, SMBJ17CHE3/52 is RoHS-compliant and halogen-free, as indicated by the "HE3" suffix per Vishay's ordering nomenclature. The "H" denotes halogen-free molding compound, "E3" confirms RoHS compliance, and "HE3" together certifies both attributes - meeting IPC-1752 and JEDEC JS-709 requirements for environmentally restricted substances. This applies to the full SMBJ17CHE3/52 production lot.
Does SMBJ17CHE3/52 require a heatsink for standard operation?
No, SMBJ17CHE3/52 does not require an external heatsink for typical transient suppression use. Its thermal resistance junction-to-lead (RθJL) is 20 °C/W, and it is rated for 5.0 W steady-state power dissipation on an infinite heatsink at TA = 50 °C. In practice, mounting on standard 0.2" × 0.2" copper pads provides sufficient thermal relief for intermittent surge events - the primary operational mode for this TVS diode. Continuous DC power dissipation is not intended for SMBJ17CHE3/52.
How does the AEC-Q101 qualification of SMBJ17CHE3/52 impact its use in automotive designs?
The AEC-Q101 qualification of SMBJ17CHE3/52 validates its reliability under automotive stress conditions including temperature cycling, highly accelerated life testing (HALT), and ESD robustness - enabling direct use in production vehicle ECUs without additional qualification. This certification covers the entire SMBJ17CHE3/52 build, including wafer fabrication, assembly, and test, and is documented in Vishay's AEC-Q101 certificate of conformance. Designers can confidently deploy SMBJ17CHE3/52 in body control, lighting, and infotainment modules.
Can SMBJ17CHE3/52 be used in bidirectional applications?
No, SMBJ17CHE3/52 is a unidirectional TVS diode and must not be used in bidirectional signal line protection. Its cathode band marking indicates polarity, and it conducts only in reverse breakdown - forward conduction is limited to 3.5 V at 50 A (per datasheet note). For bidirectional protection, Vishay specifies part numbers with "CA" suffix (e.g., SMBJ17CA), which feature symmetrical breakdown in both directions. Using SMBJ17CHE3/52 in place of a bidirectional device risks failure during positive-going transients.
SMBJ17CHE3/52 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ17CHE3/52 FAQ
1.How can I place an order for SMBJ17CHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17CHE3/52 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 SMBJ17CHE3/52 reliable?
The price and inventory of SMBJ17CHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ17CHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ17CHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17CHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17CHE3/52?
SMBJ17CHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17CHE3/52 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 SMBJ17CHE3/52?
For technical support, including SMBJ17CHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17CHE3/52 requirements.
6.How does Aetrix verify that SMBJ17CHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ17CHE3/52 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 SMBJ17CHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ17CHE3/52?
All SMBJ17CHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17CHE3/52, 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 SMBJ17CHE3/52 part is unused and in its original packaging.
Return procedure for SMBJ17CHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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