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Vishay General Semiconductor - Diodes Division SMCJ9.0CAHE3/9AT
- Part No.:
- SMCJ9.0CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0CAHE3/9AT.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,685
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Product details
Overview
SMCJ9.0CAHE3/9AT 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 9.0 V standoff voltage (VWM), 15.4 V clamping voltage (VC) at 97.4 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed across automotive sensor signal lines, industrial I/O ports, and telecom interface protection.
For engineers reviewing the SMCJ9.0CAHE3/9AT datasheet, SMCJ9.0CAHE3/9AT pinout, SMCJ9.0CAHE3/9AT application, or SMCJ9.0CAHE3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (<1 μA leakage at VWM), but triggers into low-impedance conduction when transient voltage exceeds its breakdown range (10.0–11.1 V at 1 mA). Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns).
The bidirectional configuration enables symmetric suppression of both positive and negative transients without polarity sensitivity, making it suitable for AC-coupled or differential signal paths. Its MSL Level 1 rating and matte tin-plated leads support lead-free reflow soldering per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 10.0 V / 11.1 V at 1 mA - guaranteed avalanche breakdown window for reliable trigger threshold |
| VC @ IPPM | 15.4 V at 97.4 A - clamped voltage during 10/1000 μs surge, defining worst-case stress on downstream ICs |
| PPPM | 1500 W - peak transient energy handling capacity with standardized waveform |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, critical for derating above 25 °C |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical dual-terminal construction with matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Either terminal serves as input/output; bidirectional conduction eliminates orientation constraints during PCB layout |
| Case (body) | Thermal and mechanical interface | Exposed metal slug provides primary heat dissipation path to PCB copper; requires 8.0 mm × 8.0 mm pad per terminal per datasheet fig. 2 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC, differential, or floating signal lines without polarity concerns |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control units and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for 3.3 V/5 V logic |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow profiles without moisture-related delamination risk |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS element placed directly at connector entry point to clamp transients before reaching signal conditioning circuitry. Use Value: Limits induced voltage to ≤15.4 V during 100 A surges, preserving integrity of 5 V rail and ADC front-end stages. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and EFT bursts. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, coordinated with series impedance for IEC 61000-4-4 compliance. Use Value: Absorbs 1500 W transient energy without degradation, maintaining channel availability after repeated 4 kV EFT events. |
| Telecom Line Interface | Consumer USB/Display Port ESD |
|
Use Scenario: Shielding RS-485/RS-422 transceivers in base station backhaul links from lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional parallel suppressor on differential pair, providing common-mode and differential-mode clamping. Use Value: Symmetric 10–11.1 V breakdown ensures balanced clamping, preventing data corruption during ±1 kV surge events. |
Use Scenario: Board-level ESD protection for HDMI, USB 2.0, or DisplayPort connectors in set-top boxes and monitors. IC Role / Device Role / Timing Role: Secondary clamping stage following polymer PTC, handling high-energy secondary transients beyond IEC 61000-4-2 level 4. Use Value: 15.4 V clamping voltage protects 3.3 V receiver inputs while surviving >10000 contact discharges per MIL-STD-883H. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC9.0CA | Lower PPPM (600 W), same VWM (9.0 V), smaller SMA package (DO-214AC) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a load dump | Select when board space is constrained and surge energy does not exceed 600 W |
| SMCJ9.0CAHM3/9AT | Identical electrical specs; halogen-free variant with HM3 suffix instead of HE3 | Same AEC-Q101 qualification and thermal performance; differs only in material compliance (halogen-free) | Choose HM3 version if RoHS + halogen-free compliance is mandated by OEM procurement policy |
Compared with SAC9.0CA, SMCJ9.0CAHE3/9AT delivers 2.5× higher surge power handling and superior thermal dissipation via SMC package; versus SMCJ9.0CAHM3/9AT, it shares identical protection capability but uses standard RoHS-compliant (non-halogen-free) molding compound.
Availability
SMCJ9.0CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply with AEC-Q101 traceability and long-term production continuity.
Supply support for SMCJ9.0CAHE3/9AT 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated.
FAQ
What is the clamping voltage of the SMCJ9.0CAHE3/9AT under a 10/1000 μs surge?
The SMCJ9.0CAHE3/9AT has a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 97.4 A with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMCJ9.0CAHE3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCJ9.0CAHE3/9AT qualified for automotive applications?
Yes, the SMCJ9.0CAHE3/9AT carries AEC-Q101 qualification, confirming its reliability for automotive use cases including engine control, body electronics, and ADAS sensor interfaces. The HE3 suffix explicitly denotes AEC-Q101 qualification per Vishay's ordering nomenclature. The SMCJ9.0CAHE3/9AT undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per the AEC standard.
How does the bidirectional design of the SMCJ9.0CAHE3/9AT affect PCB layout?
The SMCJ9.0CAHE3/9AT has no polarity marking and functions identically in either orientation, simplifying PCB layout and eliminating risk of incorrect placement. This bidirectional behavior allows direct placement across differential pairs, AC-coupled lines, or floating grounds without directionality checks. The SMCJ9.0CAHE3/9AT's symmetrical terminals reduce design iteration time and improve manufacturing yield in high-volume SMT assembly.
What is the thermal resistance of the SMCJ9.0CAHE3/9AT, and how does it impact power derating?
The SMCJ9.0CAHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads. This value determines how much the device's power dissipation must be reduced as ambient temperature rises - for example, at 75 °C ambient, its 6.5 W steady-state power rating derates to approximately 3.25 W. The SMCJ9.0CAHE3/9AT's RθJL of 15 °C/W further supports efficient heat transfer to PCB traces.
Can the SMCJ9.0CAHE3/9AT replace unidirectional TVS diodes in existing designs?
The SMCJ9.0CAHE3/9AT can replace unidirectional types only if the circuit topology supports bidirectional clamping - such as AC signal paths, differential buses, or floating references. It must not be substituted in DC-biased unidirectional applications (e.g., 5 V rail protection with cathode grounded) without verifying that reverse conduction does not disrupt system functionality. The SMCJ9.0CAHE3/9AT offers identical VWM and VC specs to its unidirectional counterpart SMCJ9.0AHE3/9AT but adds polarity insensitivity.
SMCJ9.0CAHE3/9AT 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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 97.4A
- 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)
SMCJ9.0CAHE3/9AT FAQ
1.How can I place an order for SMCJ9.0CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0CAHE3/9AT 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 SMCJ9.0CAHE3/9AT reliable?
The price and inventory of SMCJ9.0CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ9.0CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ9.0CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0CAHE3/9AT?
SMCJ9.0CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0CAHE3/9AT 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 SMCJ9.0CAHE3/9AT?
For technical support, including SMCJ9.0CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0CAHE3/9AT requirements.
6.How does Aetrix verify that SMCJ9.0CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0CAHE3/9AT 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 SMCJ9.0CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ9.0CAHE3/9AT?
All SMCJ9.0CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0CAHE3/9AT, 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 SMCJ9.0CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCJ9.0CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ9.0CAHE3/9AT Tags
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