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Vishay General Semiconductor - Diodes Division SMCJ5.0CAHM3/I
- Part No.:
- SMCJ5.0CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ5.0CAHM3/I.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,916
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Product details
Overview
SMCJ5.0CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 5.0 V standoff voltage (VWM), 7.25 V maximum breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and clamps transients to ≤9.2 V at 163 A (10/1000 μs waveform). It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive electronics.
For engineers reviewing the SMCJ5.0CAHM3/I datasheet, SMCJ5.0CAHM3/I pinout, SMCJ5.0CAHM3/I application, or SMCJ5.0CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, low clamping voltage under high surge current, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification for under-hood and ADAS subsystems.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage (<1000 μA at VWM) and fast response time (<1.0 ps), critical for suppressing ESD and lightning-induced surges before sensitive downstream circuitry is damaged.
The device delivers 1500 W peak pulse power handling per the standardized 10/1000 μs waveform, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W, supporting reliable operation up to TJ = +150 °C when mounted on 8.0 mm × 8.0 mm copper pads per JEDEC guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 5 V systems. |
| VBR (max) | 7.25 V - Highest voltage at which device enters breakdown under 10 mA test current; guarantees turn-on before IC damage thresholds. |
| VC @ IPPM | 9.2 V - Clamped voltage at 163 A peak pulse current; limits stress on protected ICs during worst-case transients. |
| PPPM | 1500 W - Peak pulse power dissipation capability with 10/1000 μs waveform; meets IEC 61000-4-5 Level 4 surge immunity. |
| ID @ VWM | 1000 μA - Maximum reverse leakage at 5.0 V; low enough to avoid loading 5 V logic or sensor supply rails. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount package with 8.13 mm × 6.22 mm footprint and 3.20 mm height; compatible with automated pick-and-place and reflow. |
Pinout & Package
SMCJ5.0CAHM3/I uses the SMC (DO-214AB) package - a molded, surface-mount case with two terminals and no polarity marking (bidirectional configuration). The device has no cathode/anode designation; both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient input/output node | Connected across protected line and ground (or between differential lines); conducts surge current bidirectionally. |
| Terminal 2 | Transient input/output node | Electrically identical to Terminal 1; no polarity dependency-enables flexible PCB layout for AC or floating signals. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled interfaces (e.g., RS-485, CAN FD, USB D+/D−) without external polarity management. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock-required for ADAS camera modules and body control units. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental compliance mandates and supports lead-free reflow profiles up to 260 °C peak (MSL Level 1). |
| Low clamping ratio (VC/VBR ≈ 1.27) | Minimizes voltage overshoot during surge events-critical for protecting 5 V microcontrollers and automotive sensors with tight absolute maximum ratings. |
| Glass-passivated junction | Ensures stable electrical parameters over lifetime and improved resistance to humidity-induced degradation in harsh environments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 5 V power distribution networks in engine control units (ECUs) and infotainment head units from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed between VCC and GND to clamp positive and negative transients before they reach PMICs or microcontrollers. Use Value: Limits voltage excursions to ≤9.2 V during 163 A surges, preventing latch-up or gate oxide damage in 5 V logic devices. | Use Scenario: Safeguarding analog outputs of pressure or temperature sensors connected to PLC analog input modules. IC Role / Device Role / Timing Role: Placed across sensor output and reference ground to absorb induced surges from nearby motor drives or relay switching. Use Value: Maintains signal integrity by clamping transients within 1.2 ns, avoiding ADC saturation or erroneous readings during field operation. |
| USB 2.0 Data Line Protection | RS-485 Transceiver Port Protection |
Use Scenario: ESD and surge protection for D+ and D− lines in automotive USB charging ports compliant with ISO 10605. IC Role / Device Role / Timing Role: Bidirectional TVS placed differentially across D+/D− to suppress common-mode and differential-mode transients without affecting 480 Mbps signaling. Use Value: Junction capacitance <100 pF (typ.) ensures minimal signal rise-time degradation while providing ±15 kV contact ESD immunity. | Use Scenario: Protecting half-duplex RS-485 transceivers in factory automation networks exposed to long cable runs and ground potential differences. IC Role / Device Role / Timing Role: Connected between A/B bus lines and local ground to shunt lightning-induced surges away from transceiver ESD structures. Use Value: 1500 W PPPM rating sustains multiple 10/1000 μs surges per IEC 61000-4-5, extending transceiver lifetime in unshielded industrial settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC5.0B-TB-E3/57T | Unidirectional; 5.0 V VWM; 1500 W PPPM; DO-214AB package; no AEC-Q101 qualification. | Limited to DC-biased rails where polarity is fixed; not suitable for AC or floating differential lines. | Select only if AEC-Q101 is not required and system topology enforces unidirectional surge direction. |
| SMCJ5.0CAHE3_A/I | Identical electrical specs and AEC-Q101 qualification; differs only in RoHS compliance (E3 = standard RoHS, HM3 = halogen-free RoHS). | No functional difference; substitution requires verification of halogen-free material requirements in final assembly. | Direct material-grade alternative when halogen content restrictions apply per customer specification or regional regulation. |
Compared with SAC5.0B-TB-E3/57T, SMCJ5.0CAHM3/I provides bidirectional protection and automotive qualification; compared with SMCJ5.0CAHE3_A/I, it offers halogen-free construction for stricter environmental compliance-both alternatives require validation of board-level mounting and thermal relief design.
Availability
SMCJ5.0CAHM3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, USB interface modules, and RS-485 communication ports requiring stable component supply and AEC-Q101 assurance.
Supply support for SMCJ5.0CAHM3/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 diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure-designed to meet stringent surge immunity standards while maintaining low clamping voltage and fast response.
FAQ
What is the clamping voltage of SMCJ5.0CAHM3/I at its rated peak pulse current?
The SMCJ5.0CAHM3/I clamps to a maximum of 9.2 V at its rated peak pulse current of 163 A under the 10/1000 μs waveform. This value is measured per JEDEC standards and reflects worst-case voltage seen by protected circuitry during surge events. The low clamping ratio (VC/VBR ≈ 1.27) ensures compatibility with 5 V logic families and automotive sensors having tight absolute maximum ratings. SMCJ5.0CAHM3/I maintains this performance across its full operating temperature range.
Is SMCJ5.0CAHM3/I suitable for protecting CAN FD bus lines?
Yes, SMCJ5.0CAHM3/I is suitable for CAN FD bus protection due to its bidirectional operation, 5.0 V standoff voltage matching typical CAN FD common-mode range, and low clamping voltage (≤9.2 V) that stays below transceiver absolute maximum ratings. Its DO-214AB package allows placement directly at connectors, and AEC-Q101 qualification validates reliability in automotive networking environments. SMCJ5.0CAHM3/I does not add significant capacitance that would degrade 5 Mbps CAN FD signal integrity.
Does SMCJ5.0CAHM3/I have polarity markings on the package?
No, SMCJ5.0CAHM3/I has no polarity markings because it is a bidirectional TVS diode. Unlike unidirectional variants (e.g., SMCJ5.0A), the CA-suffix version exhibits symmetrical electrical behavior across both terminals-meaning either end may connect to signal or ground without affecting performance. This eliminates orientation errors during automated assembly and simplifies layout for differential or AC-coupled interfaces. SMCJ5.0CAHM3/I relies solely on its physical symmetry, not band markings.
What is the maximum junction temperature rating for SMCJ5.0CAHM3/I?
The maximum junction temperature (TJ) for SMCJ5.0CAHM3/I is +150 °C, as specified in Vishay's official datasheet (Document Number: 88394). This rating enables operation in under-hood automotive locations, industrial motor drives, and enclosed power supplies where ambient temperatures exceed 105 °C. Derating curves in the datasheet confirm sustained 1500 W pulse capability down to TJ = 125 °C when mounted per recommended pad layout. SMCJ5.0CAHM3/I must be thermally anchored to adequate copper area to maintain this limit.
How does the HM3 suffix affect the compliance status of SMCJ5.0CAHM3/I?
The HM3 suffix on SMCJ5.0CAHM3/I indicates halogen-free, RoHS-compliant construction meeting JEDEC J-STD-20 and JESD201 Class 2 whisker resistance requirements. It differs from E3-suffix parts by eliminating brominated flame retardants and chlorine-based compounds, satisfying strict environmental mandates such as China RoHS II and EU Directive 2011/65/EU Annex II updates. SMCJ5.0CAHM3/I retains full AEC-Q101 qualification and identical electrical performance versus HE3-suffix variants-only material composition changes.
SMCJ5.0CAHM3/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:
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ5.0CAHM3/I FAQ
1.How can I place an order for SMCJ5.0CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ5.0CAHM3/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 SMCJ5.0CAHM3/I reliable?
The price and inventory of SMCJ5.0CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ5.0CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMCJ5.0CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ5.0CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ5.0CAHM3/I?
SMCJ5.0CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ5.0CAHM3/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 SMCJ5.0CAHM3/I?
For technical support, including SMCJ5.0CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ5.0CAHM3/I requirements.
6.How does Aetrix verify that SMCJ5.0CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMCJ5.0CAHM3/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 SMCJ5.0CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMCJ5.0CAHM3/I?
All SMCJ5.0CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ5.0CAHM3/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 SMCJ5.0CAHM3/I part is unused and in its original packaging.
Return procedure for SMCJ5.0CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ5.0CAHM3/I Tags
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DESD3V3E1BL-7B
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