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Vishay General Semiconductor - Diodes Division SMCJ17CAHE3/57T
- Part No.:
- SMCJ17CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ17CAHE3/57T.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,389
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Product details
Overview
SMCJ17CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 17 V standoff voltage (VWM), 1500 W peak pulse power (PPPM), and clamping voltage of 27.6 V at 54.3 A IPPM. It protects sensitive ICs, MOSFETs, and sensor signal lines against inductive switching transients and lightning-induced surges in automotive and industrial systems.
For engineers reviewing the SMCJ17CAHE3/57T datasheet, SMCJ17CAHE3/57T pinout, SMCJ17CAHE3/57T application, or SMCJ17CAHE3/57T equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W surge rating, low clamping ratio (VC/VWM ≈ 1.62), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
The SMCJ17CAHE3/57T uses a glass-passivated silicon junction to achieve fast response time (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in both polarities without polarity marking, supporting AC-coupled signal lines and differential bus protection.
Designed for surface-mount operation on 8.0 mm × 8.0 mm copper pads, it delivers 1500 W peak pulse power under 10/1000 μs waveform while maintaining thermal resistance RθJA = 75 °C/W and operating junction temperature up to +150 °C - enabling robust performance in under-hood automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 18.9 V / 20.9 V at 1 mA - ensures reliable breakdown initiation within tight tolerance band |
| VC @ IPPM | 27.6 V at 54.3 A - limits transient voltage seen by protected circuit during 10/1000 μs surge |
| PPPM | 1500 W - handles high-energy transients per IEC 61000-4-5 Level 4 (4 kV) |
| TJ max | +150 °C - supports operation in under-hood automotive and high-ambient industrial applications |
| Package | SMC (DO-214AB) - industry-standard SMT footprint compatible with JEDEC MS-013AC |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
SMCJ17CAHE3/57T is housed in an unmarked bidirectional SMC (DO-214AB) package with two terminals: anode and cathode are functionally symmetric; no polarity marking is present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry point (positive half-cycle) | Connects to line under protection; forms one side of bidirectional clamping path |
| Cathode | Surge current entry point (negative half-cycle) | Connects to line under protection; forms complementary side of bidirectional clamping path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals and differential buses without polarity constraints |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable leakage current (<1 μA at VWM) and long-term reliability under thermal stress |
| Low clamping ratio (VC/VWM) | 1.62 - minimizes overvoltage stress on downstream components during surge events |
| MSL Level 1 | Allows unlimited floor life and reflow at 260 °C peak, simplifying manufacturing flow |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power rail and ground to clamp ±100 V spikes. Use Value: Limits voltage excursion to ≤27.6 V during 1500 W surges, preserving MCU and CAN transceiver integrity. | Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS across differential output pins (e.g., 4–20 mA loop or RS-485). Use Value: Clamps transients within <1 ns while adding <10 pF capacitance, avoiding signal integrity degradation. |
| Telecom Interface Surge Suppression | Consumer Device USB Port Protection |
Use Scenario: Safeguarding Ethernet PHYs and PoE injectors against lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Bidirectional TVS placed across data pairs (e.g., TX+/TX−) referenced to chassis ground. Use Value: Absorbs 10/1000 μs surges up to 1500 W without latch-up, meeting IEC 61000-4-5 requirements. | Use Scenario: Hardening USB 2.0 D+/D− lines in portable devices against human-body-model ESD (±15 kV). IC Role / Device Role / Timing Role: Low-leakage TVS mounted directly at connector to shunt ESD current before reaching USB controller. Use Value: Maintains <1 μA reverse leakage at 17 V, preventing standby current drain while clamping to 27.6 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17CAHE3/52T | Lower PPPM (600 W), same VWM and VC, SMB package (smaller footprint) | Reduced surge handling; suitable only for lower-energy IEC 61000-4-2/4-5 Level 2 environments | Select when board space is constrained and surge threat level is moderate |
| SMCJ17CA-M3/57T | Identical electrical specs; halogen-free construction, same AEC-Q101 qualification | No functional difference; used where RoHS-compliant halogen-free materials are mandated | Select when halogen-free compliance is required by OEM specification |
Compared with SMCJ17CAHE3/57T, SMBJ17CAHE3/52T offers smaller size but sacrifices 60% surge capacity, while SMCJ17CA-M3/57T matches all performance parameters with halogen-free packaging - making the latter a direct material-compliance alternative and the former a space-constrained trade-off.
Availability
SMCJ17CAHE3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom infrastructure requiring stable component supply with AEC-Q101 validation and full traceability.
Supply support for SMCJ17CAHE3/57T 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, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The SMCJ series targets high-energy transient suppression in harsh environments, engineered specifically for automotive, industrial, and telecom applications demanding AEC-Q101 compliance and 1500 W surge immunity.
FAQ
What is the clamping voltage of SMCJ17CAHE3/57T at its rated peak pulse current?
The SMCJ17CAHE3/57T has a maximum clamping voltage (VC) of 27.6 V at its rated peak pulse current (IPPM) of 54.3 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures predictable overvoltage limiting during surge events. The clamping performance is guaranteed across the full operating temperature range of -55 °C to +150 °C, and the SMCJ17CAHE3/57T maintains this specification in bidirectional mode.
Is SMCJ17CAHE3/57T qualified for automotive applications?
Yes, SMCJ17CAHE3/57T is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3". This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD, validating its suitability for automotive powertrain, body electronics, and ADAS sensor modules. The device meets MSL Level 1 and operates reliably at junction temperatures up to +150 °C - critical for under-hood deployment.
What does the "CA" suffix indicate in SMCJ17CAHE3/57T?
The "CA" suffix in SMCJ17CAHE3/57T denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMCJ17A), the CA version has no polarity marking and exhibits identical VBR, VC, and IPPM characteristics in either direction - essential for protecting AC-coupled lines, differential buses, and floating grounds where polarity cannot be assumed.
How does the SMCJ17CAHE3/57T compare to standard SMCJ17A in terms of circuit implementation?
The SMCJ17CAHE3/57T differs from SMCJ17A primarily in polarity behavior: SMCJ17CAHE3/57T is bidirectional with no cathode band marking and equal clamping in both directions, whereas SMCJ17A is unidirectional with a visible cathode band and conducts forward current only in one direction. This makes SMCJ17CAHE3/57T ideal for differential signal lines and AC rails, while SMCJ17A suits DC power rail protection where polarity is fixed and forward conduction must be blocked.
What is the thermal resistance and mounting requirement for optimal performance of SMCJ17CAHE3/57T?
The SMCJ17CAHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. To sustain its 1500 W peak pulse rating and prevent thermal runaway during repetitive surges, PCB layout must follow Vishay's specified pad dimensions and avoid excessive trace impedance. The device's RθJL is 15 °C/W, confirming efficient heat transfer to PCB copper.
SMCJ17CAHE3/57T 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 54.3A
- 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)
SMCJ17CAHE3/57T FAQ
1.How can I place an order for SMCJ17CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ17CAHE3/57T 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 SMCJ17CAHE3/57T reliable?
The price and inventory of SMCJ17CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ17CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ17CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ17CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ17CAHE3/57T?
SMCJ17CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ17CAHE3/57T 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 SMCJ17CAHE3/57T?
For technical support, including SMCJ17CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ17CAHE3/57T requirements.
6.How does Aetrix verify that SMCJ17CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ17CAHE3/57T 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 SMCJ17CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ17CAHE3/57T?
All SMCJ17CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ17CAHE3/57T, 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 SMCJ17CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ17CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ17CAHE3/57T Tags
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