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Vishay General Semiconductor - Diodes Division SMBJ100CAHM3/I
- Part No.:
- SMBJ100CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100CAHM3/I.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,088
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Product details
Overview
SMBJ100CAHM3/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 power and signal lines. It features 100 V standoff voltage (VWM), 111–123 V breakdown voltage (VBR) at 1 mA, 162 V maximum clamping voltage (VC) at 3.7 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs waveform), used in industrial sensor interface protection and telecom line surge suppression.
For engineers reviewing the SMBJ100CAHM3/I datasheet, SMBJ100CAHM3/I pinout, SMBJ100CAHM3/I application, or SMBJ100CAHM3/I equivalent, this device is selected for bidirectional overvoltage protection where low clamping ratio, fast response (<1 ns), and AEC-Q101 qualification (via HM3 suffix) are required in automotive-grade power rail and I/O line designs.
Technical Context
This TVS operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its silicon avalanche junction delivers sub-nanosecond response to ESD and lightning-induced transients, with clamping performance validated under standardized 10/1000 µs surge waveforms per ANSI/IEEE C62.35.
The device is rated for -55 °C to +150 °C operating junction temperature, features glass-passivated chip junctions, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction-critical for automotive infotainment and body control module deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 100 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 111–123 V at 1 mA - Avalanche onset range; ensures reliable triggering above normal operating voltage with tight tolerance. |
| VC (Clamping Voltage) | 162 V at IPPM = 3.7 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines downstream component stress level. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling capability under standard 10/1000 µs waveform; enables robustness against IEC 61000-4-5 surges. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Minimal DC loading on source; preserves signal integrity and battery life in always-on systems. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and high-temperature industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow processes. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration with no polarity marking; symmetrical terminals suitable for placement across differential or floating lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally when voltage exceeds ±VBR - no orientation required during PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, RS-485 buses, and ungrounded sensor outputs without external polarity management. |
| 600 W peak pulse power (10/1000 µs) | Withstands repetitive surge events per IEC 61000-4-5 Level 4 (4 kV) without degradation when mounted per recommended pad layout. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units and ADAS camera modules requiring extended temperature and reliability compliance. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free reflow profiles without moisture-related delamination risk; eliminates baking requirement pre-assembly. |
| Glass-passivated junction | Ensures stable VBR and low leakage over time and temperature; critical for long-life industrial equipment with >10-year field deployment. |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module (BCM) Power Rails |
|---|---|
|
Use Scenario: Protecting 24 V CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to clamp transients before they reach sensitive analog front-ends or communication ICs. Use Value: Limits clamped voltage to ≤162 V during 3.7 A surge, preventing latch-up or permanent damage to 36 V-rated op-amps and CAN transceivers. |
Use Scenario: Safeguarding 12 V supply inputs to BCM microcontrollers and power switches exposed to ISO 7637-2 pulse 5a (load dump up to 60 V, 100 ms). IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail, coordinated with upstream fuse and downstream LDO to maintain system uptime during battery disconnection events. Use Value: Withstands 600 W surge energy while maintaining <1 µA leakage at 100 V, minimizing quiescent current impact on vehicle battery drain. |
| Telecom Line Surge Protection | Consumer Appliance Motor Drive Feedback Lines |
|
Use Scenario: Shielding Ethernet PHY magnetics and PoE-powered device interfaces from induced lightning surges on outdoor cabling in IP surveillance systems. IC Role / Device Role / Timing Role: Secondary-level TVS on isolated data lines, working in concert with primary gas discharge tube (GDT) and series impedance. Use Value: Sub-ns response captures fast-rising edge of coupled surges; 162 V clamping prevents breakdown of 100 V-rated Ethernet transformer insulation. |
Use Scenario: Securing hall-effect rotor position feedback lines in BLDC motor controllers inside HVAC systems and washing machines subject to brush-commutator EMI. IC Role / Device Role / Timing Role: Localized transient suppressor at motor controller PCB edge, placed adjacent to connector to intercept noise before entering MCU ADC inputs. Use Value: 111–123 V VBR aligns with 120 VAC-derived logic rails; bidirectional symmetry accommodates AC-coupled feedback signals without rectification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CAHE3/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification; same electrical specs and SMB package. | Suitable for commercial/industrial use only; not approved for automotive under-hood or safety-critical modules. | Select when halogen-free content or automotive qualification is not required, and cost optimization is prioritized. |
| SMAJ100CAHM3 | Lower PPPM (400 W vs. 600 W); SMA package (smaller footprint, higher thermal resistance); identical VWM/VBR/VC ratings. | Limited to lower-energy surge environments (e.g., IEC 61000-4-2 ESD only); unsuitable for IEC 61000-4-5 line surges. | Choose only if board space is constrained and surge threat level is limited to ESD or low-energy transients. |
Compared with SMBJ100CAHM3/I, SMBJ100CAHE3/I offers identical protection performance without halogen-free or automotive qualification, while SMAJ100CAHM3 trades 33 % lower surge power handling for smaller size-making SMBJ100CAHM3/I the optimal choice for high-reliability automotive and industrial 600 W surge immunity requirements.
Availability
SMBJ100CAHM3/I is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, telecom line protection, and consumer appliance motor drive feedback circuits requiring stable component supply across multi-year production cycles.
Supply support for SMBJ100CAHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade validation.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 compliance are mandatory.
FAQ
What does the "CA" suffix indicate in SMBJ100CAHM3/I?
The "CA" suffix denotes a bidirectional configuration - meaning SMBJ100CAHM3/I provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMBJ100AHM3/I), it has no cathode marking and functions identically regardless of terminal orientation, making it ideal for AC-coupled or floating signal lines such as RS-485, CAN FD, or sensor bridges where polarity is undefined.
Is SMBJ100CAHM3/I suitable for automotive applications?
Yes, SMBJ100CAHM3/I is AEC-Q101 qualified (confirmed by the "HM3" suffix), halogen-free, and RoHS-compliant - meeting stringent automotive reliability requirements for temperature cycling, humidity resistance, and surge endurance. It is deployed in body control modules, infotainment power supplies, and ADAS camera ECU protection where operation from -40 °C to +125 °C ambient and immunity to load dump pulses are essential.
What is the maximum clamping voltage of SMBJ100CAHM3/I and under what test condition?
The maximum clamping voltage (VC) of SMBJ100CAHM3/I is 162 V, measured at a peak pulse current (IPPM) of 3.7 A using the standardized 10/1000 µs double-exponential surge waveform. This value represents the worst-case voltage imposed on the protected circuit during a high-energy transient, and is guaranteed across the full operating temperature range (-55 °C to +150 °C junction).
How does the SMB package of SMBJ100CAHM3/I compare to SMA in terms of thermal performance?
The SMB (DO-214AA) package of SMBJ100CAHM3/I offers lower thermal resistance than SMA: RθJL = 20 °C/W (junction-to-lead) versus ~30–35 °C/W for SMA, enabling higher sustained power dissipation. When mounted on 5.0 mm × 5.0 mm copper pads, SMBJ100CAHM3/I achieves RθJA = 100 °C/W - supporting reliable 5.0 W continuous power dissipation at TA = 50 °C, critical for thermally demanding automotive and industrial deployments.
Can SMBJ100CAHM3/I be used in place of a unidirectional TVS like SMBJ100AHM3/I?
No - SMBJ100CAHM3/I is electrically and physically incompatible with unidirectional designs. While both share the same VWM (100 V) and package, SMBJ100CAHM3/I conducts in both directions and lacks polarity marking, whereas SMBJ100AHM3/I has a defined cathode band and only clamps positive transients. Substituting one for the other risks failure to suppress negative-going surges or unintended forward conduction in DC-biased circuits.
SMBJ100CAHM3/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):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 3.7A
- 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)
SMBJ100CAHM3/I FAQ
1.How can I place an order for SMBJ100CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100CAHM3/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 SMBJ100CAHM3/I reliable?
The price and inventory of SMBJ100CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ100CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMBJ100CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100CAHM3/I?
SMBJ100CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100CAHM3/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 SMBJ100CAHM3/I?
For technical support, including SMBJ100CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100CAHM3/I requirements.
6.How does Aetrix verify that SMBJ100CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMBJ100CAHM3/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 SMBJ100CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMBJ100CAHM3/I?
All SMBJ100CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100CAHM3/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 SMBJ100CAHM3/I part is unused and in its original packaging.
Return procedure for SMBJ100CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100CAHM3/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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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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