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Vishay General Semiconductor - Diodes Division SMCJ170CAHE3_A/I
- Part No.:
- SMCJ170CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ170CAHE3_A/I.pdf
- Description:
- TVS DIODE 170VWM 275VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,598
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Product details
Overview
SMCJ170CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount 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, industrial, and telecom systems against inductive switching transients and lightning-induced surges.
For engineers reviewing the SMCJ170CAHE3_A/I datasheet, SMCJ170CAHE3_A/I pinout, SMCJ170CAHE3_A/I application, or SMCJ170CAHE3_A/I equivalent, this AEC-Q101 qualified, RoHS-compliant TVS offers verified bidirectional clamping, low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for automotive-grade board-level ESD and surge resilience validation.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 189–209 V (min/max) at 1 mA test current, ensuring consistent clamping behavior regardless of transient polarity. Its 1500 W peak pulse power rating (10/1000 μs waveform) and 275 V maximum clamping voltage (VC) at IPPM = 5.5 A define its robust energy-handling capability under standardized surge conditions.
Thermal performance is characterized by RθJA = 75 °C/W and RθJL = 15 °C/W, supporting reliable operation up to TJ = +150 °C. The device features glass-passivated junction, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets UL 94 V-0 flammability requirements in its SMC molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe working range for protected circuitry. |
| VBR min/max | 189 V / 209 V at IT = 1 mA - Confirmed bidirectional breakdown threshold; ensures symmetrical overvoltage detection in either direction. |
| VC @ IPPM | 275 V at 5.5 A - Clamping voltage during 10/1000 μs surge; limits transient voltage seen by downstream components. |
| PPPM | 1500 W - Peak pulse power handling per IEC 61000-4-5; enables protection against high-energy lightning surges. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal design; compatible with automated placement. |
| AEC-Q101 | Qualified - Validated for automotive reliability including temperature cycling, HTRB, and ESD; suffix HE3 denotes qualification. |
Pinout & Package
SMCJ170CAHE3_A/I uses the standard SMC (DO-214AB) package: two-terminal, non-polarized bidirectional device with no cathode/anode marking. Terminals are matte tin-plated leads suitable for reflow soldering per J-STD-020 (MSL Level 1, 260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient input node (bidirectional) | Connects to line or signal path requiring bidirectional surge suppression; no polarity dependency. |
| Terminal 2 | Transient return node (bidirectional) | Connects to system ground or reference plane; completes low-inductance clamping path for both polarities. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC characteristics in both directions - eliminates need for polarity-aware layout in differential or AC-coupled lines. |
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, HTRB, and ESD - enables direct integration into ADAS and body control modules. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR ≈ 86 V) - reduces voltage overshoot during fast transients compared to higher-Rsurge TVS devices. |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without baking - simplifies manufacturing for high-reliability production lines. |
| Glass passivated junction | Improves long-term stability and leakage performance over temperature and time - critical for 15-year automotive service life. |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Protecting 12 V/24 V power rails in vehicle ECUs from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Bidirectional voltage clamp absorbing >1500 W surge energy while limiting rail voltage to ≤275 V. Use Value: Prevents latch-up or destruction of microcontrollers and CAN transceivers during 120 V/200 ms load dump events. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) shunt suppressor diverting induced surges on field wiring before reaching ADC front-end. Use Value: Maintains signal integrity and avoids calibration drift caused by repeated sub-microsecond transients on long cable runs. |
| Telecom Ethernet Port Surge Protection | Consumer Appliance Motor Drive Inputs |
|
Use Scenario: Safeguarding PoE-powered Ethernet PHY interfaces (e.g., RJ45 magnetics secondary side) against lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential pairs or between line and chassis ground. Use Value: Meets IEC 61000-4-5 Level 4 (4 kV) surge immunity without degrading 100BASE-TX signal integrity due to low junction capacitance. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Parallel-connected TVS across motor terminals to clamp inductive kickback exceeding 170 V. Use Value: Extends relay and driver MOSFET lifetime by limiting reverse EMF to 275 V, reducing gate oxide stress and avalanche failure risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ170CA | Same VWM (170 V), lower PPPM (400 W), higher VC (277 V), SMA package (smaller thermal mass) | Lower energy handling limits use to lower-risk consumer/industrial environments; not AEC-Q101 qualified | Select when cost-sensitive, non-automotive designs require footprint reduction and 400 W surge margin suffices. |
| ON Semiconductor SMCJ170CA | Identical VWM (170 V), same PPPM (1500 W), identical SMC package, but HE3 suffix not guaranteed AEC-Q101 (requires checking date code) | May lack full automotive qualification documentation; thermal resistance and clamping tolerance vary slightly per lot | Prefer when sourcing from ON Semi's certified automotive distribution channel and full AEC-Q101 traceability is confirmed per batch. |
Compared with Littelfuse SMAJ170CA and ON Semiconductor SMCJ170CA, the SMCJ170CAHE3_A/I delivers assured AEC-Q101 compliance, tighter clamping consistency, and guaranteed MSL Level 1 handling - making it the preferred choice for Tier-1 automotive BOMs where qualification auditability and thermal robustness are mandatory.
Availability
SMCJ170CAHE3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom Ethernet surge suppression, and appliance motor drive circuits requiring stable component supply across multi-year production cycles.
Supply support for SMCJ170CAHE3_A/I 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMCJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments where AEC-Q101 qualification, repeatable clamping, and long-term stability are essential.
FAQ
What is the clamping voltage of SMCJ170CAHE3_A/I at its rated peak pulse current?
The SMCJ170CAHE3_A/I has a maximum clamping voltage (VC) of 275 V at its specified peak pulse current (IPPM) of 5.5 A under a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SMCJ170CAHE3_A/I maintains this clamping performance bidirectionally, ensuring consistent protection regardless of transient polarity.
Is SMCJ170CAHE3_A/I suitable for automotive applications?
Yes, SMCJ170CAHE3_A/I is AEC-Q101 qualified, as indicated by the "HE3" suffix in its ordering code. It undergoes rigorous testing for temperature cycling, high-temperature reverse bias (HTRB), and ESD robustness, meeting automotive reliability requirements for under-hood and cabin modules. The SMCJ170CAHE3_A/I is commonly deployed in engine control units, body controllers, and ADAS power supplies where sustained operation up to +150 °C and surge immunity per ISO 7637-2 are mandatory.
How does the bidirectional nature of SMCJ170CAHE3_A/I affect PCB layout?
The SMCJ170CAHE3_A/I has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. Unlike unidirectional TVS diodes, the SMCJ170CAHE3_A/I can be mounted without regard to cathode/anode alignment - simplifying layout for differential lines, AC-coupled signals, or floating grounds. Its symmetric VBR (189–209 V) and VC ensure matched clamping behavior, reducing design iteration time for noise-sensitive analog or communication interfaces.
What is the thermal resistance of SMCJ170CAHE3_A/I, and how does it impact derating?
The SMCJ170CAHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per JEDEC standards. At ambient temperatures above 25 °C, its peak pulse power must be derated linearly per Figure 2 in the datasheet - for example, at TA = 85 °C, usable PPPM drops to ~1050 W. This derating ensures junction temperature remains within the +150 °C absolute maximum, preserving long-term reliability of the SMCJ170CAHE3_A/I in thermally constrained enclosures.
Does SMCJ170CAHE3_A/I meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, SMCJ170CAHE3_A/I is rated MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. This means it has unlimited floor life and requires no baking prior to assembly - enabling direct use in high-volume lead-free reflow processes without moisture-related popcorning or delamination risks. The SMCJ170CAHE3_A/I's SMC (DO-214AB) package construction and molding compound comply fully with this classification, supporting robust manufacturing yield.
SMCJ170CAHE3_A/I 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/I FAQ
1.How can I place an order for SMCJ170CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ170CAHE3_A/I 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/I reliable?
The price and inventory of SMCJ170CAHE3_A/I 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/I is usually 5 days.
3.What payment methods are accepted for SMCJ170CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ170CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ170CAHE3_A/I?
SMCJ170CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ170CAHE3_A/I 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/I?
For technical support, including SMCJ170CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ170CAHE3_A/I requirements.
6.How does Aetrix verify that SMCJ170CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMCJ170CAHE3_A/I 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/I meets industry standards.
7.What is the process for return or replacement of SMCJ170CAHE3_A/I?
All SMCJ170CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ170CAHE3_A/I, 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/I part is unused and in its original packaging.
Return procedure for SMCJ170CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ170CAHE3_A/I Tags
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