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Vishay General Semiconductor - Diodes Division SMBJ64CAHM3/I
- Part No.:
- SMBJ64CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64CAHM3/I.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,712
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Product details
Overview
SMBJ64CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 64 V standoff voltage (VWM), 71.1–78.6 V breakdown range (VBR at 1 mA), 103 V maximum clamping voltage (VC) at 5.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial sensor interfaces and telecom line protection.
For engineers reviewing the SMBJ64CAHM3/I datasheet, SMBJ64CAHM3/I pinout, SMBJ64CAHM3/I application, or SMBJ64CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both directions, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 150 °C max junction temperature supports operation in harsh thermal environments.
The SMBJ64CAHM3/I delivers fast response time (<1.0 ns) and low incremental surge resistance to maintain tight clamping under repetitive surge events. Its MSL Level 1 rating (JEDEC J-STD-020) and matte tin-plated leads ensure robust reflow solderability and long-term reliability in high-volume manufacturing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 71.1 V / 78.6 V at 1 mA - Ensures reliable triggering across process variation and temperature |
| VC @ IPPM | 103 V at 5.8 A - Limits downstream voltage stress during 10/1000 µs transient events |
| PPPM | 600 W - Sustains high-energy surges common in industrial switching and lightning-induced transients |
| ID @ VWM | ≤1.0 µA - Minimizes standby power loss and avoids false triggering in low-power circuits |
| TJ max | +150 °C - Enables use in under-hood automotive or enclosed industrial enclosures |
| RθJA | 100 °C/W - Defines thermal derating curve when mounted on 0.2" × 0.2" copper pads |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Matte tin-plated terminals, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; symmetric terminal in bidirectional mode | No polarity marking - identical electrical behavior in either direction; connects to protected line or ground reference |
| Cathode | Current exit point in forward bias; symmetric terminal in bidirectional mode | No band or marking - functionally interchangeable with anode; enables dual-direction transient shunting |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surge (4 kV/2 Ω) with margin on standard PCB layout |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| MSL Level 1 | Supports lead-free reflow up to 260 °C peak without preconditioning or baking |
| Halogen-free & RoHS | Complies with environmental regulations for industrial and consumer end equipment |
Applications
| Industrial Sensor Interface | Telecom Line Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors exposed to relay coil kickback in factory automation cabinets. IC Role / Device Role / Timing Role: Voltage clamping element placed between signal line and ground, absorbing inductive spikes before they reach ADC input stages. Use Value: Prevents sensor signal corruption and microcontroller reset by limiting transient voltage to ≤103 V during 5.8 A surges. | Use Scenario: Shielding RS-485 transceiver I/O pins from ESD and lightning-induced surges in outdoor base station backhaul links. IC Role / Device Role / Timing Role: Bidirectional transient suppressor connected across differential pair (A/B) and ground, providing symmetrical overvoltage defense. Use Value: Maintains data integrity under IEC 61000-4-2 ±15 kV contact discharge due to sub-1 ns response and low clamping ratio. |
| Automotive Body Control Module | Consumer Appliance Motor Drive |
Use Scenario: Safeguarding LIN bus communication lines against load dump and jump-start transients in door module ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed between LIN line and chassis ground, rated for automotive temperature range (−40 °C to +125 °C ambient). Use Value: Meets AEC-Q101 requirements and withstands 600 W pulses without degradation, ensuring functional safety compliance. | Use Scenario: Suppressing commutation spikes on BLDC motor gate driver supply rails in smart washing machines. IC Role / Device Role / Timing Role: Clamping device across 12 V DC bus and ground, diverting energy from MOSFET drain-source during PWM switching transitions. Use Value: Limits voltage overshoot to <103 V, preventing gate oxide stress and extending power stage lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CAHE3/I | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification | Acceptable where halogen content is unrestricted (e.g., non-EU commercial gear) | Select when cost optimization is prioritized over halogen-free requirement |
| SMAJ64CAHM3 | Lower 400 W PPPM, SMA package (smaller footprint, higher RθJA = 140 °C/W) | Suitable only for lower-energy transients or space-constrained designs with active cooling | Choose only if board area is critical and surge threat level is below IEC 61000-4-5 Level 3 |
Compared with SMBJ64CAHE3/I and SMAJ64CAHM3, the SMBJ64CAHM3/I uniquely combines halogen-free construction, 600 W surge capacity, and AEC-Q101 qualification - making it the preferred choice for automotive-qualified and environmentally regulated industrial deployments.
Availability
SMBJ64CAHM3/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, telecom line protection, automotive body control modules, and consumer appliance motor drives requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ64CAHM3/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 performance.
The SMBJ series targets high-energy transient suppression in automotive, industrial, and telecom systems - engineered for robustness under repetitive surge stress and compatibility with modern SMT assembly processes.
FAQ
What is the clamping voltage of SMBJ64CAHM3/I at its rated peak pulse current?
The SMBJ64CAHM3/I has a maximum clamping voltage (VC) of 103 V at 5.8 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value defines the upper voltage limit imposed on protected circuitry during surge events and is measured per ANSI/IEEE C62.35 standards. The SMBJ64CAHM3/I maintains this clamping performance across its full operating temperature range.
Is SMBJ64CAHM3/I suitable for automotive applications?
Yes, SMBJ64CAHM3/I is AEC-Q101 qualified and specifically designed for automotive use cases such as LIN bus protection and body control module transient suppression. Its halogen-free, RoHS-compliant construction, MSL Level 1 rating, and guaranteed operation from −55 °C to +150 °C junction temperature meet stringent automotive reliability requirements. The SMBJ64CAHM3/I is listed in Vishay's AEC-Q101 qualified product portfolio with full test report traceability.
How does the bidirectional configuration of SMBJ64CAHM3/I affect its circuit placement?
The SMBJ64CAHM3/I has no polarity marking and functions identically in both directions, allowing placement across any two nodes requiring symmetrical overvoltage protection - such as differential signal pairs or AC-coupled lines. Unlike unidirectional TVS diodes, it eliminates orientation errors during automated assembly and simplifies schematic symbol usage. The SMBJ64CAHM3/I's bidirectional behavior is confirmed by identical VBR and VC specifications in both polarities.
What is the thermal resistance of SMBJ64CAHM3/I, and how does it impact PCB layout?
The SMBJ64CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 board material and guides minimum pad sizing and copper pour design to avoid thermal runaway during repetitive surge events. Derating curves in the SMBJ64CAHM3/I datasheet must be applied above 25 °C ambient to maintain safe junction temperatures.
Does SMBJ64CAHM3/I require special handling during reflow soldering?
No special handling is required: SMBJ64CAHM3/I is rated MSL Level 1 per J-STD-020 and supports lead-free reflow profiles with peak temperatures up to 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for solderability, and whisker resistance meets JESD 201 Class 2. The SMBJ64CAHM3/I may be placed directly into standard SMT lines without baking or dry pack requirements.
SMBJ64CAHM3/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):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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)
SMBJ64CAHM3/I FAQ
1.How can I place an order for SMBJ64CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64CAHM3/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 SMBJ64CAHM3/I reliable?
The price and inventory of SMBJ64CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ64CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMBJ64CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64CAHM3/I?
SMBJ64CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64CAHM3/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 SMBJ64CAHM3/I?
For technical support, including SMBJ64CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64CAHM3/I requirements.
6.How does Aetrix verify that SMBJ64CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ64CAHM3/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 SMBJ64CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMBJ64CAHM3/I?
All SMBJ64CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64CAHM3/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 SMBJ64CAHM3/I part is unused and in its original packaging.
Return procedure for SMBJ64CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64CAHM3/I Tags
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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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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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