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Vishay General Semiconductor - Diodes Division SMBJ170CAHE3_A/H
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- Part No.:
- SMBJ170CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ170CAHE3_A/H.pdf
- Description:
- TVS DIODE 170VWM 275VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,558
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Product details
Overview
SMBJ170CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 170 V stand-off voltage (VWM), 189–209 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 275 V at 2.2 A IPPM, and operates across –55 °C to +150 °C junction temperature range - deployed in industrial power supply input stages and telecom line interface protection.
For engineers reviewing the SMBJ170CAHE3_A/H datasheet, SMBJ170CAHE3_A/H pinout, SMBJ170CAHE3_A/H application, or SMBJ170CAHE3_A/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), clamping performance under standardized surge waveforms, and real-world use context for ESD/lightning transient suppression in bidirectional signal and DC bus lines.
Technical Context
The SMBJ170CAHE3_A/H implements a glass-passivated silicon avalanche junction optimized for fast response (<1 ns) to transient overvoltages while maintaining low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating circuits without polarity dependency.
Rated for 600 W peak pulse power per 10/1000 µs waveform with 0.01% duty cycle, it sustains repetitive surges when thermally managed on 5.0 mm × 5.0 mm copper pads. The device meets MSL Level 1 per J-STD-020 and is AEC-Q101 qualified for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 170 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 189–209 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 275 V at IPPM = 2.2 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W - Surge energy handling capacity under standard 10/1000 µs waveform; validates protection level against IEC 61000-4-5 Class 3/4 events. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in high-ambient environments like industrial motor drives or base station power supplies. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard PCB pad layout; informs derating requirements above 25 °C ambient. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including infotainment power rails and body control module interfaces. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical avalanche junction; conducts surge current equally in either direction during overvoltage event. |
| Cathode | Transient current entry (bidirectional) | Second terminal of symmetrical junction; identical conduction behavior to Anode - no polarity distinction in CA devices. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables protection against high-energy transients such as lightning-induced surges on telecom lines or inductive switching spikes in industrial PLCs. |
| AEC-Q101 qualified | Validates reliability for automotive power domain applications including 12 V/24 V battery rail protection in ADAS sensor modules. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), critical for safeguarding low-voltage logic interfaces. |
| MSL Level 1 (260 °C reflow) | Supports single-pass lead-free reflow assembly without moisture-related cracking risk - eliminates pre-bake requirement. |
| Glass passivated chip junction | Ensures stable VBR over lifetime and improved humidity resistance versus epoxy-passivated alternatives in harsh environments. |
Applications
| Industrial Motor Drive Input Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: Protecting rectified AC input stage of variable frequency drives from inductive kickback and utility grid transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across DC bus rails to clamp positive/negative polarity surges before they reach IGBT gate drivers or bulk capacitors. Use Value: Limits transient voltage to ≤275 V, preventing overvoltage failure of 400 V-rated electrolytic capacitors and 600 V IGBTs under 600 W surge conditions. |
Use Scenario: Shielding RS-485/RS-232 data lines in outdoor telecom cabinets from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Bidirectional clamping device installed differential-mode between A/B lines and common-mode to ground, leveraging symmetrical VBR for balanced protection. Use Value: Maintains signal integrity by clamping transients within 1 ns while sustaining 2.2 A peak surge current without degradation across –40 °C to +85 °C operating range. |
| Automotive Body Control Module (BCM) Power Rail | Consumer Appliance Mainboard Surge Suppression |
Use Scenario: Safeguarding 12 V power input to BCM microcontrollers and CAN transceivers against load dump and jump-start events. IC Role / Device Role / Timing Role: AEC-Q101 qualified TVS mounted directly at connector entry point to absorb ISO 7637-2 Pulse 5a/b energy before reaching LDO regulators. Use Value: Withstands 170 V stand-off and clamps to 275 V, enabling use with 3.3 V/5 V logic ICs rated for ≤300 V absolute maximum input voltage. |
Use Scenario: Protecting AC-DC converter primary-side rectifier output in washing machine or HVAC mainboards from mains-borne surges. IC Role / Device Role / Timing Role: Bidirectional TVS placed across bulk capacitor terminals to suppress voltage spikes caused by compressor motor turn-off or relay contact bounce. Use Value: Delivers 600 W surge rating with 100 °C/W RθJA, allowing thermal stability on standard FR-4 PCBs without heatsinking in intermittent surge duty cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA-M3/52 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification; differs only in material composition and packaging tape format. | Preferred for halogen-free BOM compliance in EU medical or industrial equipment; same PCB layout and thermal design. | Select when halogen-free certification is required and 13" tape-and-reel delivery is preferred. |
| SMCJ170CAHE3_A/H | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; higher RθJA (60 °C/W) and 1500 W PPPM rating due to increased thermal mass. | Better suited for high-repetition surge environments (e.g., factory automation controllers) where sustained power dissipation matters more than board space. | Choose when higher surge endurance is needed and PCB area permits larger footprint; not drop-in compatible. |
Compared with SMBJ170CAHE3_A/H, the SMBJ170CA-M3/52 offers identical protection performance with halogen-free materials, while the SMCJ170CAHE3_A/H provides 2.5× higher peak power handling at the cost of larger size - guiding selection based on space constraints versus surge repetition rate requirements.
Availability
SMBJ170CAHE3_A/H is available at Aetrix Electronics and suitable for industrial motor drives, telecom line interfaces, automotive body control modules, and consumer appliance power supplies requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMBJ170CAHE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-reliability transient suppression in space-constrained surface-mount applications - targeting industrial, automotive, and telecom systems where robustness against ESD, lightning, and inductive switching is mission-critical.
FAQ
What is the clamping voltage of SMBJ170CAHE3_A/H at its rated peak pulse current?
The SMBJ170CAHE3_A/H has a maximum clamping voltage (VC) of 275 V at its rated peak pulse current (IPPM) of 2.2 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream components remain within their absolute maximum voltage ratings.
Is SMBJ170CAHE3_A/H suitable for automotive applications?
Yes, SMBJ170CAHE3_A/H is AEC-Q101 qualified, confirming its suitability for automotive applications including body control modules, infotainment power rails, and sensor interface protection. The qualification covers temperature cycling, humidity testing, and surge endurance - making SMBJ170CAHE3_A/H appropriate for 12 V and 24 V vehicle electrical systems exposed to load dump and jump-start transients.
How does the bidirectional design of SMBJ170CAHE3_A/H affect its use in circuit protection?
The bidirectional design of SMBJ170CAHE3_A/H allows symmetrical clamping in both polarities, eliminating the need for polarity awareness during placement and enabling use in AC-coupled signal paths, floating grounds, or differential bus lines like RS-485. Unlike unidirectional variants, SMBJ170CAHE3_A/H has no cathode band marking and delivers identical VBR and VC characteristics regardless of surge direction - simplifying layout and enhancing protection coverage.
What is the thermal resistance of SMBJ170CAHE3_A/H, and how does it impact PCB layout?
SMBJ170CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 5.0 mm × 5.0 mm copper pads per terminal. This value assumes standard FR-4 PCB construction; reducing RθJA requires increasing copper area or adding internal ground planes. Layout must allocate sufficient thermal pad area to avoid exceeding +150 °C junction temperature under repetitive surge conditions.
Does SMBJ170CAHE3_A/H meet lead-free reflow requirements?
Yes, SMBJ170CAHE3_A/H meets lead-free reflow requirements with MSL Level 1 rating per J-STD-020 and a maximum peak reflow temperature of 260 °C. Its matte tin-plated leads are solderable per J-STD-002 and JESD 22-B102, and it passes JESD 201 Class 2 whisker testing - supporting reliable single-pass assembly in modern lead-free manufacturing lines without pre-baking.
SMBJ170CAHE3_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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 170V
- Voltage - Breakdown (Min):
- 189V
- Voltage - Clamping (Max) @ Ipp:
- 275V
- Current - Peak Pulse (10/1000µs):
- 2.2A
- 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)
SMBJ170CAHE3_A/H FAQ
1.How can I place an order for SMBJ170CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ170CAHE3_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 SMBJ170CAHE3_A/H reliable?
The price and inventory of SMBJ170CAHE3_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 SMBJ170CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ170CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ170CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ170CAHE3_A/H?
SMBJ170CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ170CAHE3_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 SMBJ170CAHE3_A/H?
For technical support, including SMBJ170CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ170CAHE3_A/H requirements.
6.How does Aetrix verify that SMBJ170CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ170CAHE3_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 SMBJ170CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ170CAHE3_A/H?
All SMBJ170CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ170CAHE3_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 SMBJ170CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMBJ170CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ170CAHE3_A/H Tags
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