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Vishay General Semiconductor - Diodes Division SMCJ170CAHE3_A/H
- Part No.:
- SMCJ170CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ170CAHE3_A/H.pdf
- Description:
- TVS DIODE 170VWM 275VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,568
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Product details
Overview
SMCJ170CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 170 V standoff voltage (VWM), 1500 W peak pulse power rating (10/1000 µs), and clamps transients to ≤275 V at 5.5 A peak pulse current - deployed in automotive ECUs, industrial motor drives, and telecom power supplies.
For engineers reviewing the SMCJ170CAHE3_A/H datasheet, SMCJ170CAHE3_A/H pinout, SMCJ170CAHE3_A/H application, or SMCJ170CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-214AB (SMC) package thermal performance, and compliance with UL 497B surge protector classification.
Technical Context
This TVS diode operates symmetrically in both polarities due to its bidirectional construction, enabling protection against reverse- and forward-polarity transients without polarity-sensitive placement. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports fast energy dissipation during ESD or lightning-induced surges.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. Its thermal resistance (RθJA = 75 °C/W) is specified on 8.0 mm × 8.0 mm copper pads, confirming suitability for high-reliability PCB layouts requiring minimal thermal derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - maximum continuous reverse/forward voltage before clamping begins; defines operating margin below breakdown |
| VBR min/max | 189 V / 209 V at 1.0 mA - verified breakdown threshold range ensuring consistent turn-on across production lots |
| VC @ IPPM | 275 V at 5.5 A - clamping voltage under 10/1000 µs surge; determines protected circuit's maximum transient exposure |
| PPPM | 1500 W - peak pulse power handling capacity; enables suppression of high-energy transients per IEC 61000-4-5 |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - extended junction temperature rating supports under-hood automotive and industrial ambient conditions |
| Package | SMC (DO-214AB) - standardized surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height for automated assembly |
Pinout & Package
SMCJ170CAHE3_A/H uses the SMC (DO-214AB) package - a symmetrical, bidirectional surface-mount case with no polarity marking. The two terminals are electrically identical and interchangeable; neither functions as anode or cathode in normal operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient Input/Output Node | Connects to line under protection (e.g., DC bus or signal trace); carries full surge current during clamping |
| Terminal 2 | Transient Input/Output Node | Completes bidirectional path; identical electrical role to Terminal 1 - no polarity dependency |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| UL 497B recognized | Approved as a primary protector for telecom/data line interfaces under Underwriters Laboratories safety standard |
| Low-profile SMC package | Enables high-density PCB layout with 2.62 mm max height and compatibility with standard pick-and-place equipment |
| 1500 W surge rating | Withstands 10/1000 µs surges up to 5.5 A - sufficient for Level 4 IEC 61000-4-5 (4 kV) compliance with proper layout |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS-compliant construction; HM3 variant adds halogen-free molding compound for green manufacturing |
Applications
| Automotive Power Distribution | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protection of 12 V/24 V battery-fed microcontroller inputs and CAN transceiver power rails against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between power rail and ground to shunt surge energy before it reaches downstream ICs. Use Value: Prevents latch-up or permanent damage to MCUs and communication ICs during ISO 7637-2 Pulse 5a (load dump) events up to 60 V peak. | Use Scenario: Safeguarding gate driver supply lines and feedback sensor inputs in variable-frequency AC drives exposed to inductive switching noise. IC Role / Device Role / Timing Role: Fast-response transient suppressor installed at power entry points and isolated analog signal interfaces. Use Value: Limits voltage overshoot to <275 V during IGBT turn-off spikes, preserving isolation barrier integrity and ADC accuracy. |
| Telecom DC Power Feeds | Consumer Appliance Mainboard Protection |
Use Scenario: Secondary-side surge protection on -48 V DC telecom rectifier outputs feeding base station backplane logic. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after bulk filtering but before point-of-load regulators to absorb residual transients. Use Value: Maintains UL 497B recognition while clamping surges to safe levels for PMICs and FPGA configuration circuits. | Use Scenario: Input-stage protection for smart home appliance mainboards subjected to mains-borne surges and ESD from user interfaces. IC Role / Device Role / Timing Role: Primary overvoltage clamp on AC/DC converter DC output and USB-C power delivery lines. Use Value: Enables Class II insulation compliance and withstands repeated 8 kV contact ESD events without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CAHE3_A/H | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM and VBR range | Reduced surge handling limits use to lower-energy environments (e.g., consumer USB ports vs. automotive power rails) | Select when board space is constrained and surge threat level is ≤2 kV IEC 61000-4-5 |
| SMCJ170AHE3_A/H | Unidirectional version; includes cathode band marking and forward voltage drop (~3.5 V @ 100 A) | Requires polarity-aware layout; unsuitable for AC-coupled or floating signal lines | Choose only for DC-only lines where reverse conduction must be blocked |
Compared with SMBJ170CAHE3_A/H and SMCJ170AHE3_A/H, the SMCJ170CAHE3_A/H delivers higher surge immunity in a thermally robust SMC package while maintaining bidirectional symmetry - making it optimal for automotive and industrial applications demanding AEC-Q101 validation and 1500 W pulse handling.
Availability
SMCJ170CAHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, and telecom power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q101-qualified surge protection.
Supply support for SMCJ170CAHE3_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 and application-specific performance.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the SMCJ170CAHE3_A/H under a 10/1000 µs surge?
The SMCJ170CAHE3_A/H clamps to a maximum of 275 V when subjected to its rated peak pulse current of 5.5 A using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable protection margins for downstream circuitry.
Is the SMCJ170CAHE3_A/H suitable for automotive applications?
Yes, the SMCJ170CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its HE3 suffix. It meets stress tests including temperature cycling, high-temperature reverse bias, and ESD, and is rated for operation from –55 °C to +150 °C - making it appropriate for engine control units, body electronics, and ADAS power domains.
Does the SMCJ170CAHE3_A/H have polarity markings on the package?
No, the SMCJ170CAHE3_A/H has no polarity markings because it is a bidirectional TVS diode. The SMC (DO-214AB) package features two identical terminals with symmetrical electrical characteristics - eliminating orientation constraints during automated placement and simplifying PCB layout.
What is the maximum reverse leakage current for the SMCJ170CAHE3_A/H at its standoff voltage?
The maximum reverse leakage current (ID) for the SMCJ170CAHE3_A/H is 1.0 µA at its 170 V standoff voltage (VWM), measured at 25 °C. This ultra-low leakage ensures minimal impact on power rail efficiency and signal integrity in high-impedance sensing or low-power standby circuits.
How does the SMCJ170CAHE3_A/H differ from the unidirectional SMCJ170AHE3_A/H?
The SMCJ170CAHE3_A/H is bidirectional with symmetrical clamping in both directions and no cathode marking, whereas the SMCJ170AHE3_A/H is unidirectional, includes a cathode band, and exhibits forward conduction (~3.5 V @ 100 A). The CA version is required for AC-coupled, floating, or polarity-agnostic protection; the A version blocks reverse current but cannot protect negative transients.
SMCJ170CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 5.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
SMCJ170CAHE3_A/H FAQ
1.How can I place an order for SMCJ170CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ170CAHE3_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 SMCJ170CAHE3_A/H reliable?
The price and inventory of SMCJ170CAHE3_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 SMCJ170CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for SMCJ170CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ170CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ170CAHE3_A/H?
SMCJ170CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ170CAHE3_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 SMCJ170CAHE3_A/H?
For technical support, including SMCJ170CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ170CAHE3_A/H requirements.
6.How does Aetrix verify that SMCJ170CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SMCJ170CAHE3_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 SMCJ170CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of SMCJ170CAHE3_A/H?
All SMCJ170CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ170CAHE3_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 SMCJ170CAHE3_A/H part is unused and in its original packaging.
Return procedure for SMCJ170CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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