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Vishay General Semiconductor - Diodes Division SMCJ170CAHE3/57T
- Part No.:
- SMCJ170CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ170CAHE3/57T.pdf
- Description:
- TVS DIODE 170VWM 275VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,794
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Product details
Overview
SMCJ170CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power rating, 170 V standoff voltage (VWM), and clamping voltage of 275 V at 5.5 A peak pulse current. It protects sensitive ICs, MOSFETs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMCJ170CAHE3/57T datasheet, SMCJ170CAHE3/57T pinout, SMCJ170CAHE3/57T application, or SMCJ170CAHE3/57T equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 1500 W surge capability, low thermal resistance (RθJL = 15 °C/W), and RoHS-compliant matte tin terminations suitable for automated SMT assembly.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within <1 ps to transients induced by inductive switching or lightning surges. Its bidirectional architecture ensures symmetrical clamping in both polarities, eliminating need for polarity-aware placement on PCBs.
Designed for surface-mount use on 8.0 mm × 8.0 mm copper pads, it delivers stable performance across -55 °C to +150 °C junction temperature range and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The glass-passivated junction ensures robust reliability under repetitive surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 189 V / 209 V at 1 mA - verified breakdown threshold ensuring precise turn-on margin |
| VC @ IPPM | 275 V at 5.5 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling per single 10/1000 µs waveform |
| RθJL | 15 °C/W - low junction-to-lead thermal resistance enabling efficient heat transfer to PCB |
| TJ max | +150 °C - extended junction temperature rating supporting under-hood automotive use |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional device with no polarity marking; terminals are matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Surge current return path | Bidirectional symmetry means either terminal serves as current sink/source depending on transient polarity |
| Anode (Cathode) | Surge current entry point | No functional distinction between terminals; identical clamping behavior in both directions |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics where long-term surge immunity is mission-critical |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV) surges when properly mounted on recommended 8 mm × 8 mm copper pads |
| Low RθJL (15 °C/W) | Minimizes thermal derating at elevated ambient temperatures, preserving surge margin in enclosed enclosures |
| MSL Level 1 | Allows unlimited floor life and standard reflow without baking, reducing manufacturing overhead |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator transients. IC Role / Device Role / Timing Role: Shunt-type transient voltage suppressor placed at input stage to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: Limits voltage excursion to ≤275 V during 1500 W surges, preventing latch-up or gate oxide damage in downstream silicon. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential or single-ended sensor output pins to absorb EFT and surge energy. Use Value: Maintains signal integrity by clamping ±275 V transients while adding <0.5 pF capacitance, avoiding bandwidth degradation. |
| Telecom Power Feeds | Consumer Appliance Motor Drives |
Use Scenario: Protecting PoE-powered equipment inputs from Ethernet cable-induced surges and cross-talk coupling. IC Role / Device Role / Timing Role: Primary-level TVS on DC input rail upstream of isolation and regulation circuitry. Use Value: Absorbs up to 1500 W of coupled surge energy without degradation, meeting GR-1089-CORE Level 3 requirements. | Use Scenario: Shielding MCU GPIOs and gate drivers in washing machine motor control boards from brush-commutator noise. IC Role / Device Role / Timing Role: Localized TVS at motor driver IC supply pins and enable lines to suppress repetitive 1–100 ns spikes. Use Value: Withstands >100,000 surge events at 5.5 A peak due to glass-passivated junction and low incremental resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ170CAHE3/A | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 110 °C/W) | Suitable only for lower-energy transients; not recommended for automotive load dump | Select when board space is constrained and surge threat level is limited to IEC 61000-4-4 Level 3 |
| SMCJ170AHE3/57T | Unidirectional version; cathode band marking required; same VWM/VC/PPPM but asymmetric conduction | Requires polarity-aware layout; unsuitable for AC or floating signals | Choose only when protecting DC rails with known polarity and no reverse-voltage risk |
Compared with SMAJ170CAHE3/A and SMCJ170AHE3/57T, the SMCJ170CAHE3/57T uniquely combines bidirectional operation, 1500 W surge capacity, and AEC-Q101 qualification in the SMC package-making it the only option qualified for under-hood automotive surge protection without layout redesign.
Availability
SMCJ170CAHE3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, telecom power feeds, and consumer appliance motor drives requiring stable component supply and long-lifecycle support.
Supply support for SMCJ170CAHE3/57T 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, efficiency, and application-specific validation.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where failure tolerance and long-term stability are non-negotiable.
FAQ
What is the clamping voltage of the SMCJ170CAHE3/57T under a 10/1000 µs surge?
The SMCJ170CAHE3/57T clamps to 275 V at its rated peak pulse current of 5.5 A using the standardized 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 overvoltage limiting for downstream components.
Is the SMCJ170CAHE3/57T suitable for automotive applications?
Yes, the SMCJ170CAHE3/57T carries AEC-Q101 qualification (as indicated by the "HE3" suffix), validating its reliability for automotive powertrain, body control, and infotainment systems. It withstands temperature cycling, humidity, and mechanical shock per the standard, and its 1500 W surge rating covers load dump and ISO 7637-2 threats.
How does the bidirectional design of the SMCJ170CAHE3/57T affect PCB layout?
The SMCJ170CAHE3/57T has no polarity marking and identical electrical behavior in both directions, eliminating orientation constraints during placement. This simplifies layout, reduces assembly errors, and enables use on AC-coupled, differential, or floating nodes-unlike unidirectional variants such as SMCJ170AHE3/57T which require cathode alignment.
What is the thermal resistance from junction to lead (RθJL) for the SMCJ170CAHE3/57T?
The SMCJ170CAHE3/57T has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W, as specified in the Vishay datasheet. This low value enables efficient heat conduction from the silicon die into the PCB copper pads, supporting sustained operation at elevated ambient temperatures without significant derating of its 1500 W surge capability.
Does the SMCJ170CAHE3/57T meet RoHS and halogen-free requirements?
Yes, the "HE3" suffix confirms the SMCJ170CAHE3/57T is RoHS-compliant and AEC-Q101 qualified. It is not halogen-free-that designation requires the "HM3" suffix (e.g., SMCJ170CAHM3/57T). Both HE3 and HM3 variants meet JESD 201 Class 2 whisker resistance and J-STD-002 solderability standards.
SMCJ170CAHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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)
SMCJ170CAHE3/57T FAQ
1.How can I place an order for SMCJ170CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ170CAHE3/57T 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 SMCJ170CAHE3/57T reliable?
The price and inventory of SMCJ170CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ170CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ170CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ170CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ170CAHE3/57T?
SMCJ170CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ170CAHE3/57T 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 SMCJ170CAHE3/57T?
For technical support, including SMCJ170CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ170CAHE3/57T requirements.
6.How does Aetrix verify that SMCJ170CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ170CAHE3/57T 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 SMCJ170CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ170CAHE3/57T?
All SMCJ170CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ170CAHE3/57T, 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 SMCJ170CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ170CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ170CAHE3/57T Tags
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