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Vishay General Semiconductor - Diodes Division SMCJ9.0CAHE3/57T
- Part No.:
- SMCJ9.0CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ9.0CAHE3/57T.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,899
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Product details
Overview
SMCJ9.0CAHE3/57T 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 maximum clamping voltage (VC) at 97.4 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (10/1000 μs waveform), making it suitable for automotive power line and industrial sensor interface protection.
For engineers reviewing the SMCJ9.0CAHE3/57T datasheet, SMCJ9.0CAHE3/57T pinout, SMCJ9.0CAHE3/57T application, or SMCJ9.0CAHE3/57T equivalent, this device delivers AEC-Q101 qualified surge immunity with low incremental surge resistance, fast response time, and bidirectional clamping symmetry - critical for CAN bus transceivers, automotive ECUs, and I/O port protection where polarity-agnostic transient suppression is required.
Technical Context
The SMCJ9.0CAHE3/57T operates as a bidirectional avalanche diode, providing symmetrical clamping in both forward and reverse directions without polarity dependence. Its breakdown voltage (VBR) is specified at 10.0–11.1 V (min/max) at 1 mA test current, with a temperature coefficient of +0.074 %/°C - enabling stable performance across -55 °C to +150 °C junction temperature range.
It meets MSL Level 1 per J-STD-020 (260 °C peak reflow), uses glass-passivated chip junction construction, and exhibits low thermal resistance (RθJL = 15 °C/W) for effective surge energy dissipation. The device is RoHS-compliant and halogen-free, with matte tin-plated leads solderable 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; defines safe operating margin for 12 V automotive systems. |
| VBR (min/max) | 10.0 V / 11.1 V at 1 mA - Ensures reliable avalanche initiation within tight tolerance; critical for predictable turn-on during ESD or load dump events. |
| VC @ IPPM | 15.4 V at 97.4 A - Clamped voltage seen by protected circuit under 1500 W surge; guarantees downstream ICs remain below absolute maximum ratings. |
| PPPM | 1500 W (10/1000 μs) - Peak surge handling capacity sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 transients. |
| IPPM | 97.4 A - Peak surge current capability directly supports high-energy transients on power rails and signal lines. |
| TJ max. | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating. |
| Package | SMC (DO-214AB) - Surface-mount package with 8.0 mm × 8.0 mm copper pad thermal footprint; optimized for automated placement and thermal reliability. |
Pinout & Package
SMCJ9.0CAHE3/57T is housed in an SMC (DO-214AB) surface-mount package with two terminals and no polarity marking (bidirectional configuration). The case conforms to UL 94 V-0 flammability rating and features matte tin-plated leads compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals; either terminal may connect to line or ground - simplifies PCB layout and eliminates polarity errors during assembly. |
| Case (cathode band absent) | Non-polarized package body | Absence of cathode band confirms bidirectional functionality; eliminates risk of incorrect orientation during automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and surge endurance - required for ECU, ADAS, and body control modules. |
| 1500 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Load Dump (Pulse 5a) without degradation - protects against alternator-induced surges up to 60 V. |
| Low clamping ratio (VC/VWM = 1.71) | Minimizes voltage overshoot during clamping - preserves signal integrity on high-speed interfaces like LIN or SENT while limiting stress on downstream buffers. |
| MSL Level 1 moisture sensitivity | Enables standard SMT reflow without baking - reduces manufacturing cost and avoids moisture-related popcorning failures. |
| Glass-passivated junction | Provides stable leakage performance (<10 μA at VWM) and long-term reliability under thermal cycling - essential for 15+ year automotive service life. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power rail and chassis ground to clamp surges above 15.4 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during alternator field collapse events. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS shunting transients from 4–20 mA or 0–10 V signal lines to ground. Use Value: Maintains measurement accuracy by limiting voltage excursion to ≤15.4 V, avoiding ADC saturation or op-amp rail-to-rail clipping. |
| Telecom Equipment Surge Protection | Consumer Appliance Motor Drive Inputs |
Use Scenario: Safeguarding Ethernet PHY power pins and auxiliary rails in PoE-powered switches against lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 3.3 V/5 V bias rails upstream of DC-DC converters. Use Value: Absorbs 1500 W surge energy without failure, preserving system uptime and reducing need for redundant protection stages. | Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Bidirectional clamping device across motor terminals or H-bridge supply rails. Use Value: Eliminates need for separate flyback diodes while providing symmetric protection during both motoring and braking phases. |
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), smaller SMA package, higher VC (17.5 V at 34.5 A) | Not rated for AEC-Q101; limited to consumer/industrial use with lower surge exposure | Select when space-constrained layouts require smaller footprint and surge energy is <600 W. |
| SMCJ9.0AHE3/57T | Unidirectional version; same VWM, VBR, and VC, but cathode-marked and asymmetric clamping | Requires correct polarity placement; unsuitable for AC-coupled or floating signal lines | Choose only when circuit topology enforces fixed polarity and ground-referenced clamping is acceptable. |
Compared with SAC9.0CA and SMCJ9.0AHE3/57T, the SMCJ9.0CAHE3/57T uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and true bidirectional symmetry - making it the sole option for automotive power rail protection where polarity independence and high-energy resilience are mandatory.
Availability
SMCJ9.0CAHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom infrastructure equipment, and consumer appliance motor drive circuits requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ9.0CAHE3/57T 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, efficiency, and automotive-grade qualification.
The SMCJ series is engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness against ISO 7637-2, IEC 61000-4-5, and ESD events is non-negotiable.
FAQ
What is the clamping voltage of the SMCJ9.0CAHE3/57T under full-rated surge current?
The SMCJ9.0CAHE3/57T has a maximum clamping voltage (VC) of 15.4 V at its rated peak pulse current of 97.4 A (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and ensures protected circuits experience minimal overvoltage during worst-case transients. The SMCJ9.0CAHE3/57T maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is the SMCJ9.0CAHE3/57T suitable for automotive applications?
Yes, the SMCJ9.0CAHE3/57T is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It meets stringent requirements for temperature cycling, surge endurance, and mechanical robustness required in engine control units, body electronics, and ADAS systems. The SMCJ9.0CAHE3/57T is validated for ISO 7637-2 Pulse 1, 2a, and 5a compliance when properly mounted on recommended copper pads.
How does the bidirectional design of the SMCJ9.0CAHE3/57T affect circuit layout?
The bidirectional nature of the SMCJ9.0CAHE3/57T eliminates polarity constraints - either terminal can connect to line or ground without functional impact. This simplifies PCB routing, removes risk of orientation errors during automated assembly, and enables use in AC-coupled or floating signal paths. The SMCJ9.0CAHE3/57T has no cathode band marking, confirming its symmetrical construction.
What is the thermal resistance of the SMCJ9.0CAHE3/57T, and how does it influence surge handling?
The SMCJ9.0CAHE3/57T has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W, enabling efficient heat transfer from the silicon junction to the PCB copper pads. This low RθJL sustains repeated surge events without thermal runaway and supports reliable operation at elevated ambient temperatures. The SMCJ9.0CAHE3/57T achieves its 1500 W rating only when mounted on 8.0 mm × 8.0 mm copper pads per terminal, as specified in the datasheet.
Does the SMCJ9.0CAHE3/57T meet RoHS and halogen-free requirements?
Yes, the SMCJ9.0CAHE3/57T carries the "HE3" suffix, indicating it is RoHS-compliant and AEC-Q101 qualified. Per Vishay documentation, HE3 parts are also halogen-free and meet JESD 201 Class 2 whisker resistance. The molding compound is UL 94 V-0 rated, and terminals are matte tin-plated per J-STD-002 - satisfying environmental and reliability mandates for automotive and industrial deployments. The SMCJ9.0CAHE3/57T fully complies with material categorization per Vishay document 99912.
SMCJ9.0CAHE3/57T 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):
- 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)
SMCJ9.0CAHE3/57T FAQ
1.How can I place an order for SMCJ9.0CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ9.0CAHE3/57T 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 SMCJ9.0CAHE3/57T reliable?
The price and inventory of SMCJ9.0CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ9.0CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ9.0CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ9.0CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ9.0CAHE3/57T?
SMCJ9.0CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ9.0CAHE3/57T 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 SMCJ9.0CAHE3/57T?
For technical support, including SMCJ9.0CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ9.0CAHE3/57T requirements.
6.How does Aetrix verify that SMCJ9.0CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ9.0CAHE3/57T 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 SMCJ9.0CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ9.0CAHE3/57T?
All SMCJ9.0CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ9.0CAHE3/57T, 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 SMCJ9.0CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ9.0CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ9.0CAHE3/57T Tags
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