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Vishay General Semiconductor - Diodes Division SMBJ100CAHM3_A/I
- Part No.:
- SMBJ100CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100CAHM3_A/I.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,325
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Product details
Overview
SMBJ100CAHM3_A/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 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), deployed in industrial sensor signal lines and telecom interface protection.
For engineers reviewing the SMBJ100CAHM3_A/I datasheet, SMBJ100CAHM3_A/I pinout, SMBJ100CAHM3_A/I application, or SMBJ100CAHM3_A/I equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional structure, 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 10/1000 µs surge rating reflects standardized lightning and switching transient immunity per ANSI/IEEE C62.35.
The device is rated for -55 °C to +150 °C operating junction temperature and exhibits a VBR temperature coefficient of 0.107 %/°C - critical for thermal stability in automotive under-hood or industrial ambient environments. Mounting on 0.2" × 0.2" copper pads achieves specified 600 W pulse power dissipation with 0.01 % duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 100 V - maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 111–123 V at 1 mA - guaranteed conduction onset range; ensures predictable turn-on during overvoltage events |
| VC (Clamping Voltage) | 162 V at IPPM = 3.7 A - peak voltage seen by protected circuit during 10/1000 µs surge; determines stress on downstream components |
| PPPM (Peak Pulse Power) | 600 W - transient energy handling capability under standard 10/1000 µs waveform; validates compliance with IEC 61000-4-5 Level 4 |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - minimal standby current; preserves signal integrity and battery life in always-on interfaces |
| TJ max. | +150 °C - maximum junction temperature; supports operation in high-ambient environments such as motor drives or base stations |
| RθJA | 100 °C/W - thermal resistance junction-to-ambient on recommended pad layout; informs PCB copper area requirements for thermal management |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Matte tin-plated leads, solderable per J-STD-002 and JESD22-B102. Bidirectional type - no polarity marking on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative half-cycle) | Conducts during negative surges; forms symmetrical clamping path with cathode |
| Cathode | Transient current entry (positive half-cycle) | Conducts during positive surges; enables bidirectional protection without external polarity routing |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN, Ethernet PHY) without polarity concerns |
| 600 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and telecom equipment up to Level 4 (4 kV line-earth) |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including body control modules and infotainment interfaces requiring reliability under temperature cycling and vibration |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns response), preserving timing margins in high-speed data lines |
| Halogen-free & RoHS-compliant | Fulfills environmental compliance mandates for EU, China RoHS, and JEITA standards; supports sustainable manufacturing and end-of-life processing |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protecting analog output lines (4–20 mA) and digital I/O (CAN/LIN) in factory-floor pressure/temperature sensors exposed to relay coil flyback and ESD. IC Role / Device Role / Timing Role: Standoff-mode TVS placed directly at connector entry point to shunt transients before reaching precision ADC or microcontroller GPIO. Use Value: Limits induced voltage to ≤162 V during 3.7 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V signal chain ICs. |
Use Scenario: Safeguarding LIN bus transceivers and window motor driver inputs against load dump and jump-start voltage spikes in passenger vehicle BCMs. IC Role / Device Role / Timing Role: Bidirectional clamping element co-located with connector, absorbing ±100 V transients without polarity reversal wiring. Use Value: Maintains <1.0 µA leakage at 100 V VWM to avoid false wake-up in sleep-mode LIN nodes while surviving AEC-Q101 stress tests. |
| Telecom Line Card Surge Protection | Consumer USB-C Port ESD Hardening |
|
Use Scenario: Front-end protection of xDSL or GPON line interface units subjected to lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary coarse-clamp stage upstream of active protection ICs, diverting >90 % of 600 W surge energy to ground. Use Value: Clamps to 162 V within nanoseconds, allowing downstream TSS or polymer PTC to handle residual energy without thermal runaway. |
Use Scenario: Secondary-level ESD protection on USB-C CC and SBU pins where space-constrained layouts require discrete bidirectional devices. IC Role / Device Role / Timing Role: Fast-response TVS integrated into compact 2.5 mm × 3.8 mm footprint, placed adjacent to connector to minimize trace inductance. Use Value: Achieves sub-1 ns response with 162 V clamping, meeting IEC 61000-4-2 Level 4 (15 kV air/8 kV contact) without degrading USB 2.0 signal integrity. |
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_A/I | Same electrical specs, but RoHS-compliant commercial grade (non-AEC-Q101); uses standard matte tin plating without halogen-free compound | Approved for industrial/commercial use only; not validated for automotive temperature cycling or humidity bias life testing | Select when AEC-Q101 qualification is unnecessary and cost optimization is prioritized over automotive compliance |
| SMAJ100CAHM3_A/I | Lower 400 W PPPM rating; same VWM/VBR/VC but reduced IPPM (2.3 A); SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients (e.g., ESD-only); unsuitable for IEC 61000-4-5 line surge in mains-connected equipment | Choose only for space-constrained consumer designs where 600 W surge immunity is not required and thermal budget allows higher junction rise |
Compared with SMBJ100CAHM3_A/I, the HE3 variant trades automotive qualification for lower cost in non-automotive settings, while the SMAJ100CAHM3_A/I reduces surge capacity and thermal performance to fit tighter PCB footprints - neither offers pin-compatible replacement without verifying layout and system-level surge test compliance.
Availability
SMBJ100CAHM3_A/I is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, telecom line cards, and consumer USB-C port protection requiring stable component supply across multi-year production cycles.
Supply support for SMBJ100CAHM3_A/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, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial automation, and communications infrastructure where consistent clamping performance and long-term stability are mandatory.
FAQ
What is the clamping voltage of SMBJ100CAHM3_A/I at its rated peak pulse current?
The SMBJ100CAHM3_A/I has a maximum clamping voltage (VC) of 162 V at its specified peak pulse current (IPPM) of 3.7 A under the 10/1000 µs waveform condition. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ100CAHM3_A/I maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C), with VC drift bounded by its 0.107 %/°C VBR temperature coefficient.
Is SMBJ100CAHM3_A/I suitable for automotive applications?
Yes, SMBJ100CAHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 88392 datasheet. It undergoes stress testing for temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing (uHAST), making it appropriate for automotive body electronics, infotainment interfaces, and powertrain subsystems where transient immunity and long-term reliability are critical. The SMBJ100CAHM3_A/I meets all applicable AEC-Q101 failure criteria at TJ = +150 °C.
How does the bidirectional design of SMBJ100CAHM3_A/I affect its PCB layout?
The bidirectional design of SMBJ100CAHM3_A/I eliminates polarity marking and allows placement in either orientation across differential or floating signal paths - simplifying layout for RS-485, CAN, or Ethernet PHY interfaces. Unlike unidirectional TVS diodes, SMBJ100CAHM3_A/I requires no cathode-anode alignment relative to system ground, reducing routing constraints and eliminating risk of reverse installation. Its DO-214AA package dimensions (5.21 mm × 4.06 mm) and recommended 0.2" × 0.2" copper pads are identical regardless of orientation.
What is the maximum reverse leakage current for SMBJ100CAHM3_A/I at its stand-off voltage?
The SMBJ100CAHM3_A/I exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 100 V stand-off voltage (VWM), measured at TA = 25 °C. This low leakage ensures minimal loading on high-impedance sensor outputs or battery-backed circuits, preserving accuracy and runtime. Leakage remains within specification up to +125 °C ambient, with typical values below 0.5 µA at room temperature - verified per JEDEC JESD22-A114 test conditions.
Does SMBJ100CAHM3_A/I meet UL 497B recognition requirements?
Yes, SMBJ100CAHM3_A/I carries Underwriters Laboratories recognition under UL 497B (file E136766) for both unidirectional and bidirectional transient protectors. This certification confirms compliance with safety requirements for primary protector classification in telecommunications and data line applications. The UL recognition applies specifically to the SMBJ100CAHM3_A/I configuration - including its halogen-free molding compound and matte tin lead finish - and is documented in Vishay's official safety file listing.
SMBJ100CAHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for SMBJ100CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100CAHM3_A/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_A/I reliable?
The price and inventory of SMBJ100CAHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ100CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100CAHM3_A/I?
SMBJ100CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100CAHM3_A/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_A/I?
For technical support, including SMBJ100CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100CAHM3_A/I requirements.
6.How does Aetrix verify that SMBJ100CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ100CAHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ100CAHM3_A/I?
All SMBJ100CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100CAHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for SMBJ100CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100CAHM3_A/I Tags
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