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Vishay General Semiconductor - Diodes Division SMCJ5.0CAHE3/9AT
- Part No.:
- SMCJ5.0CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ5.0CAHE3/9AT.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,852
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Product details
Overview
SMCJ5.0CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 5.0 V stand-off voltage (VWM), 1500 W peak pulse power (PPPM), clamping voltage of 9.2 V at 163 A, and operates across -55 °C to +150 °C junction temperature. It is AEC-Q101 qualified and RoHS-compliant, targeting automotive sensor line and power rail protection.
For engineers reviewing the SMCJ5.0CAHE3/9AT datasheet, SMCJ5.0CAHE3/9AT pinout, SMCJ5.0CAHE3/9AT application, or SMCJ5.0CAHE3/9AT equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.84), MSL Level 1 moisture sensitivity, 75 °C/W junction-to-ambient thermal resistance, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) to ESD and lightning-induced transients. Its bidirectional architecture enables symmetric clamping in both polarities without polarity marking, supporting protection of AC-coupled or floating signal paths. The device meets ANSI/IEEE C62.35 surge standards and UL 497B recognition for protector classification.
Thermal performance is defined by RθJA = 75 °C/W (on recommended pad layout) and RθJL = 15 °C/W, enabling reliable operation under repetitive surge conditions when mounted per JESD22-B102 soldering guidelines. The 0.057 %/°C temperature coefficient of VBR ensures stable breakdown behavior across automotive temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 6.40 V / 7.07 V at 10 mA - Confirmed breakdown range ensuring reliable turn-on margin above VWM |
| VC @ IPPM | 9.2 V at 163 A (10/1000 µs) - Clamping voltage limiting downstream circuit stress during worst-case surge |
| PPPM | 1500 W - Peak surge energy handling capacity under standardized transient waveform |
| ID @ VWM | 1000 µA - Low leakage current preserving signal integrity and power efficiency in standby |
| TJ max | +150 °C - Enables use in under-hood automotive environments and high-power industrial enclosures |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 8.13 mm footprint and 3.20 mm height for high-power density |
Pinout & Package
SMCJ5.0CAHE3/9AT is a two-terminal bidirectional TVS diode in SMC (DO-214AB) package. No polarity marking is present; both terminals are electrically symmetrical. The device mounts via matte tin-plated leads compliant with J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no cathode band or polarity identification required |
| Case (body) | Thermal and mechanical interface | Plastic SMC body provides UL 94 V-0 flammability rating and transfers heat to PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses, or ungrounded circuits without polarity constraints |
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Low clamping ratio (VC/VWM) | 1.84 - Minimizes voltage overshoot during surge events, reducing risk of IC latch-up or gate oxide damage |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking, simplifying manufacturing logistics |
| Glass passivated junction | Improves long-term stability and reduces parameter drift under thermal cycling and humidity exposure |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamp |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to shunt surge energy before reaching signal conditioning ICs. Use Value: Limits transient voltage to ≤9.2 V, preventing damage to 5 V-tolerant ADC inputs and microcontroller I/O pins while maintaining signal fidelity. | Use Scenario: Safeguarding 5 V DC-DC converter outputs in PLC modules against inductive switching spikes from solenoid drivers. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing >1 kA surge currents within nanoseconds to prevent regulator shutdown or MOSFET avalanche failure. Use Value: 1500 W PPPM rating sustains repeated 10/1000 µs surges without degradation, extending system uptime in factory automation environments. |
| Consumer USB Port ESD Guard | Telecom Line Interface Protection |
Use Scenario: Shielding USB 2.0 data lines and VBUS in portable medical devices from human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed adjacent to USB connector to divert ±8 kV contact discharge away from PHY IC. Use Value: Sub-1 ns response time and <1000 µA leakage at 5.0 V ensure no signal attenuation or standby current penalty in battery-powered designs. | Use Scenario: Protecting Ethernet PHY front-end circuits in VoIP gateways from lightning-induced surges on RJ-45 ports. IC Role / Device Role / Timing Role: Primary-level TVS on transformer-coupled pairs, coordinated with secondary-side MOVs and gas discharge tubes. Use Value: Symmetric 6.4–7.07 V VBR ensures balanced clamping on differential pairs, preserving common-mode rejection and signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC5.0CA | Lower PPPM (500 W), same VWM and bidirectional configuration, smaller SMA package | Not suitable for high-energy surges; limited to consumer-grade interfaces with lower IEC 61000-4-5 requirements | Select SAC5.0CA only when board space is constrained and surge threat level is ≤1 kV/2 Ω |
| SMCJ5.0AHE3/9AT | Unidirectional version with cathode band marking; identical VWM, VBR, VC, and PPPM ratings | Requires correct polarity orientation; unsuitable for AC or floating nodes where reverse voltage may occur | Choose SMCJ5.0AHE3/9AT only for DC power rails with known polarity and no reverse bias risk |
Compared with SAC5.0CA and SMCJ5.0AHE3/9AT, the SMCJ5.0CAHE3/9AT uniquely balances high-energy surge handling (1500 W), bidirectional symmetry, and AEC-Q101 qualification-making it the sole option among the three for automotive-grade, polarity-agnostic protection of 5 V systems.
Availability
SMCJ5.0CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial power supply clamping, and telecom line protection requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ5.0CAHE3/9AT 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, power efficiency, and automotive qualification.
The SMCJ series is engineered specifically for high-power transient suppression in harsh environments, targeting design-in for automotive, industrial, and telecom infrastructure where robustness against ISO 7637-2 and IEC 61000-4-5 threats is mandatory.
FAQ
What is the clamping voltage of SMCJ5.0CAHE3/9AT at its rated peak pulse current?
The SMCJ5.0CAHE3/9AT has a maximum clamping voltage (VC) of 9.2 V when subjected to its rated peak pulse current (IPPM) of 163 A under 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, Document Number 88394. The low VC ensures protected circuits remain within safe operating limits during surge events.
Is SMCJ5.0CAHE3/9AT suitable for automotive applications?
Yes, SMCJ5.0CAHE3/9AT is AEC-Q101 qualified and explicitly designated for automotive use with the "HE3" suffix indicating RoHS-compliance and automotive qualification. It meets requirements for under-hood and cabin electronics, including protection of CAN transceivers, sensor signal lines, and power rails exposed to load dump and jump-start conditions per ISO 7637-2.
How does the bidirectional design of SMCJ5.0CAHE3/9AT affect its PCB layout?
The bidirectional design of SMCJ5.0CAHE3/9AT eliminates polarity constraints: no cathode band marking is present, and either terminal may connect to either side of the protected line. This simplifies PCB routing for differential signals or AC-coupled paths and avoids orientation errors during automated placement. Layout must still follow the recommended 8.0 mm × 8.0 mm copper pad per terminal for thermal and surge performance.
What is the maximum leakage current of SMCJ5.0CAHE3/9AT at its stand-off voltage?
At its 5.0 V stand-off voltage (VWM), the SMCJ5.0CAHE3/9AT exhibits a maximum reverse leakage current (ID) of 1000 µA at 25 °C. This value is specified in the Electrical Characteristics table of the Vishay datasheet and remains stable across temperature due to the device's low temperature coefficient (0.057 %/°C). Low leakage preserves power budget in always-on automotive modules.
Does SMCJ5.0CAHE3/9AT require special handling during reflow soldering?
No special handling is required: SMCJ5.0CAHE3/9AT is rated MSL Level 1 per J-STD-020, permitting unlimited floor life and standard lead-free reflow profiles with a maximum peak temperature of 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD22-B102, and whisker resistance is certified to JESD201 Class 2-ensuring compatibility with high-volume SMT assembly without baking or dry-pack requirements.
SMCJ5.0CAHE3/9AT 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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 163A
- 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)
SMCJ5.0CAHE3/9AT FAQ
1.How can I place an order for SMCJ5.0CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ5.0CAHE3/9AT 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 SMCJ5.0CAHE3/9AT reliable?
The price and inventory of SMCJ5.0CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ5.0CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ5.0CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ5.0CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ5.0CAHE3/9AT?
SMCJ5.0CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ5.0CAHE3/9AT 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 SMCJ5.0CAHE3/9AT?
For technical support, including SMCJ5.0CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ5.0CAHE3/9AT requirements.
6.How does Aetrix verify that SMCJ5.0CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ5.0CAHE3/9AT 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 SMCJ5.0CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ5.0CAHE3/9AT?
All SMCJ5.0CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ5.0CAHE3/9AT, 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 SMCJ5.0CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ5.0CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ5.0CAHE3/9AT Tags
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