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Vishay General Semiconductor - Diodes Division SMBJ5.0CAHM3/I
- Part No.:
- SMBJ5.0CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ5.0CAHM3/I.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,438
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Product details
Overview
SMBJ5.0CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 5.0 V stand-off voltage (VWM), 6.4–7.25 V breakdown range (VBR), 600 W peak pulse power (10/1000 µs), and clamps to ≤9.2 V at 65.2 A peak current - used for protecting MOSFET gates, sensor I/O, and USB/RS-485 interfaces in industrial control systems.
For engineers reviewing the SMBJ5.0CAHM3/I datasheet, SMBJ5.0CAHM3/I pinout, SMBJ5.0CAHM3/I application, or SMBJ5.0CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, 600 W surge rating with low clamping voltage, AEC-Q101 qualification status, halogen-free RoHS compliance, and compatibility with automated SMT assembly on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transient events: when reverse voltage exceeds VWM = 5.0 V, it avalanches at VBR (min 6.4 V, max 7.25 V @ 10 mA), limiting surge energy via low dynamic impedance. Its bidirectional symmetry enables protection of AC-coupled or differential lines without polarity concerns.
Thermal design relies on RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), requiring minimal copper pad area (0.2" × 0.2") for rated 600 W pulse handling. The device meets MSL Level 1 (260 °C peak reflow) and supports repetitive surges at 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing margin for protected line. |
| VBR (min/max) | 6.4 V / 7.25 V @ 10 mA - Breakdown onset range; ensures reliable triggering above normal operating voltage with tight tolerance. |
| VC @ IPPM | ≤9.2 V @ 65.2 A - Clamped voltage under 600 W 10/1000 µs surge; determines maximum stress on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling per JEDEC standard waveform; validates robustness against lightning-induced or inductive-switching transients. |
| IPPM | 65.2 A - Peak surge current supported at rated clamping voltage; defines minimum trace width and PCB layout margin. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 2.2 mm height; compatible with J-STD-002 solderability and JESD22-B102 whisker testing. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current from either direction; connects to protected line without polarity constraint. |
| Cathode | Transient current exit (bidirectional) | Completes low-impedance path to ground or reference rail during both positive and negative transients. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) with margin in compact SMB footprint. |
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded sensor outputs without external polarity management. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics applications requiring zero-defect reliability under thermal cycling and vibration stress. |
| Halogen-free & RoHS-compliant | Meets IPC-1752A material declaration requirements and EU Directive 2011/65/EU for environmentally constrained supply chains. |
| MSL Level 1 (260 °C) | Permits standard lead-free reflow profiles without pre-baking; eliminates moisture-related popcorning risk during SMT assembly. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and chassis ground, responding within <1 ns to limit voltage excursion below IC absolute maximum ratings. Use Value: Prevents latch-up or gate oxide damage in microcontrollers and analog front-ends by clamping transients to ≤9.2 V while sustaining 600 W surge energy. |
Use Scenario: Shielding RS-485 transceivers in factory automation PLCs from EFT bursts and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Differential-line TVS connected across A/B bus terminals, absorbing common-mode transients without disrupting DC bias or data integrity. Use Value: Maintains signal fidelity during 10/1000 µs surges up to 65.2 A while preserving bus termination impedance and meeting EN 61000-4-4/5 immunity requirements. |
| USB 2.0 Data Line Protection | DC Power Rail Clamp |
|
Use Scenario: Safeguarding USB D+/D− lines in embedded host devices against ESD events per IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector, shunting ESD current away from PHY transceiver inputs. Use Value: Limits voltage to ≤9.2 V within nanoseconds, preventing data corruption or PHY latch-up while adding <1 pF parasitic capacitance (per diode). |
Use Scenario: Clamping 12 V/24 V DC input rails in IoT gateways against inductive switching spikes from relays or solenoids. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between rail and ground, conducting only during overvoltage events exceeding 5.0 V. Use Value: Absorbs 600 W transient energy without fuse activation, enabling cost-effective protection without active circuitry or voltage regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ5.0CAHE3/I | Same electrical specs, but RoHS-compliant commercial grade (non-AEC-Q101); uses standard tin plating without halogen-free compound. | Lacks automotive qualification; suitable for consumer/industrial equipment where AEC-Q101 is not mandated. | Select SMBJ5.0CAHE3/I for cost-sensitive non-automotive designs requiring identical clamping performance. |
| SMAJ5.0CA | Lower 400 W peak pulse power (vs. 600 W), higher clamping voltage (≤12.3 V @ 32.6 A), SMA package (smaller footprint, lower thermal mass). | Reduced surge margin; limited to lower-energy transients or space-constrained layouts where SMB footprint is prohibitive. | Choose SMAJ5.0CA only when board area is critical and system-level surge testing confirms 400 W sufficiency. |
Compared with SMBJ5.0CAHE3/I, the SMBJ5.0CAHM3/I adds halogen-free construction and AEC-Q101 validation without sacrificing clamping performance; versus SMAJ5.0CA, it delivers 50% higher surge energy absorption and tighter voltage control in a thermally superior package.
Availability
SMBJ5.0CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial communication interfaces, USB peripheral protection, and DC power rail stabilization requiring stable component supply across multi-year production cycles.
Supply support for SMBJ5.0CAHM3/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, and protection devices with emphasis on reliability, thermal performance, and automotive-grade qualification.
The SMBJ series was engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure where failure modes must be mitigated without compromising signal integrity or board space.
FAQ
What is the clamping voltage of SMBJ5.0CAHM3/I at its rated peak pulse current?
The SMBJ5.0CAHM3/I clamps to a maximum of 9.2 V at its rated peak pulse current of 65.2 A (10/1000 µs waveform). This value is measured under standardized test conditions with 0.2" × 0.2" copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ5.0CAHM3/I maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is SMBJ5.0CAHM3/I suitable for automotive applications?
Yes, SMBJ5.0CAHM3/I is AEC-Q101 qualified and specifically designed for automotive use, as indicated by the "HM3" suffix denoting halogen-free, RoHS-compliant, and AEC-Q101 validated construction. It supports under-hood and body electronics applications including sensor protection, infotainment interfaces, and power distribution modules where reliability under thermal cycling and mechanical vibration is mandatory. The SMBJ5.0CAHM3/I meets all stress test requirements defined in the AEC-Q101 standard.
How does the bidirectional configuration of SMBJ5.0CAHM3/I affect its circuit placement?
The SMBJ5.0CAHM3/I has no polarity marking and functions identically for positive and negative transients, allowing direct placement across any two-node interface without regard to signal direction or DC bias polarity. This eliminates orientation errors during automated assembly and simplifies layout for AC-coupled lines like RS-485, USB, or audio paths. Unlike unidirectional TVS diodes, the SMBJ5.0CAHM3/I requires no series blocking capacitor or external bias network to handle bidirectional surges.
What is the thermal resistance profile of SMBJ5.0CAHM3/I, and how does it impact PCB layout?
The SMBJ5.0CAHM3/I exhibits RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), meaning effective heat dissipation depends critically on copper pad area and via count. For full 600 W pulse rating, Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Reducing pad size or omitting thermal vias increases junction temperature, derating peak power capability - the SMBJ5.0CAHM3/I must be laid out per the recommended pad dimensions in Document Number 88392 to maintain specified surge performance.
Does SMBJ5.0CAHM3/I meet industry surge immunity standards such as IEC 61000-4-5?
Yes, the SMBJ5.0CAHM3/I's 600 W peak pulse power rating (10/1000 µs waveform) aligns with IEC 61000-4-5 Level 4 surge testing (4 kV line-to-ground, 2 kV line-to-line) when implemented with proper PCB layout and grounding. Its low clamping voltage (≤9.2 V) and fast response time (<1 ns) enable compliant protection of downstream ICs without additional filtering. System-level validation is required, but the SMBJ5.0CAHM3/I provides the foundational clamping performance needed to pass standardized surge immunity tests.
SMBJ5.0CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 65.2A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ5.0CAHM3/I FAQ
1.How can I place an order for SMBJ5.0CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ5.0CAHM3/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 SMBJ5.0CAHM3/I reliable?
The price and inventory of SMBJ5.0CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ5.0CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMBJ5.0CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ5.0CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ5.0CAHM3/I?
SMBJ5.0CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ5.0CAHM3/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 SMBJ5.0CAHM3/I?
For technical support, including SMBJ5.0CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ5.0CAHM3/I requirements.
6.How does Aetrix verify that SMBJ5.0CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ5.0CAHM3/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 SMBJ5.0CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMBJ5.0CAHM3/I?
All SMBJ5.0CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ5.0CAHM3/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 SMBJ5.0CAHM3/I part is unused and in its original packaging.
Return procedure for SMBJ5.0CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ5.0CAHM3/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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