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Vishay General Semiconductor - Diodes Division SMBJ100CAHM3_B/I
- Part No.:
- SMBJ100CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100CAHM3_B/I.pdf
- Description:
- 600W,100V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,937
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Product details
Overview
SMBJ100CAHM3_B/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 100 V stand-off 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), commonly deployed on power rails and signal lines in industrial motor drives and telecom interface circuits.
For engineers reviewing the SMBJ100CAHM3_B/I datasheet, SMBJ100CAHM3_B/I pinout, SMBJ100CAHM3_B/I application, or SMBJ100CAHM3_B/I equivalent, key selection criteria include bidirectional clamping symmetry, low thermal resistance (RθJL = 20 °C/W), AEC-Q101 qualification status, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at VWM), but triggers into low-impedance conduction when transient voltage exceeds VBR, diverting surge current away from downstream ICs. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surges.
The SMBJ100CAHM3_B/I is rated for -55 °C to +150 °C operating junction temperature, supports 100 A non-repetitive forward surge (IFSM), and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. Its bidirectional architecture eliminates polarity sensitivity, enabling use on AC-coupled or differential signal paths without orientation constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V–48 V DC systems. |
| VBR (min/max) | 111 V / 123 V at 1 mA - Confirmed breakdown range ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 162 V at 3.7 A - Clamping voltage during 10/1000 µs surge; determines maximum stress imposed on protected circuitry. |
| PPPM | 600 W - Peak pulse power handling capability; enables suppression of IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24 V lines. |
| RθJL | 20 °C/W - Junction-to-lead thermal resistance; supports sustained power dissipation with minimal PCB copper area. |
| TJ max. | +150 °C - Maximum junction temperature rating; allows operation in high-ambient environments like enclosed industrial enclosures. |
| AEC-Q101 | Qualified - Meets automotive-grade reliability requirements for vibration, temperature cycling, and HTRB testing. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode side) | Transient current sink terminal | Conducts surge current toward ground or return path during positive transients; identical function in both directions due to symmetrical structure. |
| Anode (Cathode side) | Transient current sink terminal | Conducts surge current during negative transients; electrically interchangeable with cathode terminal in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity concerns. |
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 4 kV on 50 Ω source impedance, critical for industrial Ethernet and PLC I/O modules. |
| Halogen-free, RoHS-compliant (HM3 suffix) | Meets environmental compliance mandates for export to EU, China, and Japan; compatible with lead-free reflow profiles. |
| MSL Level 1, 260 °C peak reflow | Eliminates moisture sensitivity concerns; allows standard SMT assembly without baking or special handling. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for high-speed logic. |
Applications
| Industrial Motor Drives | Telecom Interface Protection |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensing lines against switching-induced transients in 48 V BLDC inverters. IC Role / Device Role / Timing Role: Shunt TVS diode placed across MOSFET gate-source or op-amp input pins to clamp ESD and inductive kickback. Use Value: Limits transient voltage to ≤162 V, preventing gate oxide rupture in 200 V-rated SiC drivers and preserving analog sensor accuracy. |
Use Scenario: Surge protection on RS-485 transceiver bus lines exposed to lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Bidirectional clamping element connected between A/B differential pair and ground, symmetrically limiting common-mode overvoltage. Use Value: Withstands 4 kV IEC 61000-4-5 surges while maintaining <1 nF junction capacitance, avoiding signal integrity degradation at 10 Mbps. |
| Automotive Body Control Modules | Consumer Power Adapters |
Use Scenario: Input rail protection in 12 V BCMs subjected to load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Primary clamping device on main 12 V supply line upstream of DC-DC converters and microcontrollers. Use Value: AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime; 150 °C TJ rating supports under-hood mounting. |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters where 20 V output rails require transient margin. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across output capacitor terminals to absorb flyback spikes from synchronous rectifiers. Use Value: 100 V VWM provides 2× safety margin above 20 V nominal, while 162 V VC prevents downstream regulator latch-up during 100 V surges. |
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_B/I | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification. | Acceptable where halogen-free mandate is not enforced (e.g., non-EU commercial products). | Select SMBJ100CAHE3_B/I if cost sensitivity outweighs halogen-free requirement and environmental compliance is limited to RoHS only. |
| SMBJ100AHE3_B/I | Unidirectional variant; includes cathode band marking and forward voltage drop (VF ≤ 3.5 V @ 50 A). | Requires polarity-aware layout; unsuitable for AC or differential signal protection without external diode pairing. | Choose SMBJ100AHE3_B/I only when protecting DC-only rails with known polarity and where lower forward conduction loss is needed. |
Compared with SMBJ100CAHM3_B/I, the HE3 variant trades halogen-free construction for slightly lower cost, while the unidirectional SMBJ100AHE3_B/I introduces polarity dependency and lacks symmetrical clamping-making it inappropriate for RS-485 or AC-coupled interfaces where the bidirectional SMBJ100CAHM3_B/I delivers inherent design flexibility and layout simplicity.
Availability
SMBJ100CAHM3_B/I is available at Aetrix Electronics and suitable for industrial motor drives, telecom interface protection, automotive body control modules, and consumer power adapters requiring stable component supply and full AEC-Q101 traceability.
Supply support for SMBJ100CAHM3_B/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 SMBJ series is engineered for high-energy transient suppression in harsh environments-targeting industrial automation, automotive electronics, and infrastructure equipment where robustness and long-term stability are mandatory.
FAQ
What does the "CA" suffix indicate in SMBJ100CAHM3_B/I?
The "CA" suffix denotes a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., SMBJ100A), SMBJ100CAHM3_B/I provides symmetrical clamping in both polarities, making it ideal for AC signal lines, differential buses like RS-485, or any application where voltage transients may occur with either polarity. This eliminates the need for polarity-aware layout or dual-diode configurations.
Is SMBJ100CAHM3_B/I qualified for automotive use?
Yes, SMBJ100CAHM3_B/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code HM3_X designation. It undergoes rigorous stress testing-including temperature cycling, highly accelerated life testing (HALT), and mechanical shock-to ensure reliability in automotive body electronics, infotainment systems, and ADAS power domains operating from -40 °C to +125 °C ambient.
How does the HM3 suffix differ from E3 or HE3 in SMBJ100CAHM3_B/I?
The HM3 suffix indicates halogen-free, RoHS-compliant construction meeting IEC 61249-2-21 standards, whereas E3 is RoHS-compliant but not halogen-free, and HE3 adds AEC-Q101 qualification to E3. SMBJ100CAHM3_B/I combines both halogen-free material and AEC-Q101 qualification-critical for automotive and green-electronics programs requiring full environmental compliance.
What is the maximum clamping voltage of SMBJ100CAHM3_B/I under surge conditions?
The maximum clamping voltage (VC) of SMBJ100CAHM3_B/I is 162 V at a peak pulse current (IPPM) of 3.7 A, measured with a 10/1000 µs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge events, directly defining the safe operating margin for downstream components such as 200 V MOSFETs or 170 V-rated capacitors.
Can SMBJ100CAHM3_B/I be used in place of a unidirectional TVS like SMBJ100AHE3_B/I?
No-SMBJ100CAHM3_B/I is not a direct replacement for unidirectional types like SMBJ100AHE3_B/I. While both share identical VWM, VBR, and PPPM ratings, the unidirectional part conducts forward current with VF ≤ 3.5 V and requires correct cathode orientation. Substituting SMBJ100CAHM3_B/I in a unidirectional design may result in unintended conduction or insufficient forward surge handling, especially in DC power rail applications.
SMBJ100CAHM3_B/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:
- Active
- 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_B/I FAQ
1.How can I place an order for SMBJ100CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100CAHM3_B/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_B/I reliable?
The price and inventory of SMBJ100CAHM3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ100CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100CAHM3_B/I?
SMBJ100CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100CAHM3_B/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_B/I?
For technical support, including SMBJ100CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100CAHM3_B/I requirements.
6.How does Aetrix verify that SMBJ100CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ100CAHM3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ100CAHM3_B/I?
All SMBJ100CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100CAHM3_B/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_B/I part is unused and in its original packaging.
Return procedure for SMBJ100CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100CAHM3_B/I Tags
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ESD9B5.0ST5G
onsemi
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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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onsemi
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DESD5V0U1BB-7
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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