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Taiwan Semiconductor Corporation SMBJ100C
- Part No.:
- SMBJ100C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100C.pdf
- Description:
- 600W, 123.5V, 10%, BIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,681
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Product details
Overview
SMBJ100C from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy ESD and surge protection in DC power rails and signal lines. It features a 100V working stand-off voltage (VWM), 111–136V breakdown voltage (VBR @ 1mA), 179V maximum clamping voltage (VC @ 3.5A), and <1μA leakage current at rated VWM.
For engineers reviewing the SMBJ100C datasheet, SMBJ100C pinout, SMBJ100C application, or SMBJ100C equivalent, key selection criteria include clamping performance under 10/1000µs surges, unidirectional polarity marking, compliance with ISO 7637-2 Pulse 1/2a/2b/3a/3b, and thermal derating above 25°C ambient.
Technical Context
The SMBJ100C operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified breakdown range (111–136V @ 1mA). Its glass-passivated junction ensures stable VBR and low leakage, while fast response (<1.0ps) enables effective suppression of ESD and fast transients.
Thermal design relies on RθJC = 10°C/W and RθJA = 55°C/W, supporting continuous operation up to TJ = 150°C. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, enabling standard reflow assembly without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 111 / 136 V @ 1 mA - Confirmed breakdown threshold range defining turn-on consistency |
| VC @ IPP | 179 V @ 3.5 A - Peak clamped voltage during 10/1000µs surge, limiting downstream stress |
| PPK | 600 W - Non-repetitive peak pulse power handling per IEC 61000-4-5 and ISO 7637-2 |
| ID @ VWM | <1 µA - Low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ max | +150 °C - Maximum junction temperature enabling use in under-hood or industrial enclosures |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with cathode band marking and 0.090g mass |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with matte tin-plated leads, polarity indicated by cathode band on one end. Terminal geometry complies with JEDEC DO-214AA mechanical drawings and supports automated placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 100V rail); clamps to anode when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| Clamping voltage ≤179 V @ 3.5 A | Provides predictable overvoltage limiting for 100V systems without overstressing downstream ICs |
| ISO 7637-2 compliance (Pulse 1/2a/2b/3a/3b) | Validated for automotive load-dump and inductive-switching immunity in 12V/24V systems |
| Moisture sensitivity level 1 | Enables direct SMT assembly without pre-baking, reducing manufacturing complexity and cost |
| RoHS & halogen-free (IEC 61249-2-21) | Meets global environmental compliance requirements for industrial and automotive end equipment |
Applications
| Automotive Power Rail Protection | Industrial DC Input Protection |
|---|---|
Use Scenario: Protecting 100V battery-fed control modules against load dump and alternator transients in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 100V supply rail and chassis ground to clamp surges within safe limits. Use Value: Limits clamped voltage to ≤179V, preventing damage to 200V-rated DC-DC controllers and microcontrollers. |
Use Scenario: Safeguarding programmable logic controller (PLC) analog input modules from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff protection on 100V auxiliary power bus feeding isolated signal conditioners. Use Value: Delivers 600W peak surge handling with <1μA leakage, preserving measurement accuracy and system uptime. |
| LED Driver Overvoltage Clamping | Telecom DC Feeder Protection |
Use Scenario: Clamping transients on constant-current LED driver outputs driving high-voltage strings (e.g., street lighting). IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing inductive kickback from driver MOSFET switching. Use Value: Fast <1.0ps response prevents latch-up in driver ICs; 179V VC aligns with 200V LED string BOM margin. |
Use Scenario: Protecting central office power feeders supplying remote radio units (RRUs) over long copper runs. IC Role / Device Role / Timing Role: Primary surge suppression on +100V DC feeder line entering outdoor cabinet. Use Value: Withstands repeated 10/1000µs surges up to 600W while maintaining <1μA ID for low standby loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ100A | Unidirectional, same VWM (100V), but lower PPK (400W); VC = 165V @ 3.5A | Lower energy rating limits suitability for ISO 7637-2 Pulse 5a (load dump) | Select when system surge energy is confirmed ≤400W and tighter clamping (165V) is prioritized |
| ON Semiconductor 1.5SMC100A | Same DO-214AB (SMC) package footprint, higher PPK (1500W), VC = 165V @ 11.5A | Larger SMC package requires PCB layout change; suited for higher-energy industrial transients | Choose for enhanced robustness where board space allows SMC and surge levels exceed 600W |
Compared with SMBJ100C, SMAJ100A offers lower clamping but reduced surge capacity, while 1.5SMC100A delivers higher energy handling in a larger package-neither is pin-compatible, requiring layout review for substitution.
Availability
SMBJ100C is available at Aetrix Electronics and suitable for automotive power rail protection, industrial DC input protection, LED driver overvoltage clamping, and telecom DC feeder protection requiring stable component supply across production lifecycles.
Supply support for SMBJ100C 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, including TVS diodes, rectifiers, and MOSFETs, with global distribution and AEC-Q200 qualified products.
The SMBJ series was developed for high-reliability surface-mount surge protection in automotive and industrial environments, emphasizing ISO 7637-2 compliance, low leakage, and robust thermal performance in compact SMB packages.
FAQ
What is the polarity configuration of SMBJ100C?
The SMBJ100C is a unidirectional TVS diode, with cathode marked by a band on the DO-214AA (SMB) package body. It conducts in forward bias like a standard diode and clamps transients only in reverse bias above its breakdown voltage. This configuration is intended for DC rail protection where polarity is fixed, unlike bidirectional variants (e.g., SMBJ100CA) used in AC or floating signal lines.
Does SMBJ100C meet automotive transient immunity standards?
Yes, SMBJ100C meets ISO 7637-2 test pulses 1, 2a, 2b, 3a, and 3b, making it suitable for 12V and 24V automotive subsystems. Its 600W peak pulse power rating and 179V clamping voltage at 3.5A ensure compliance with load-dump and inductive-switching surge requirements when properly mounted with low-inductance grounding.
What is the maximum clamping voltage of SMBJ100C under surge conditions?
The SMBJ100C has a maximum clamping voltage (VC) of 179 V at a peak impulse current (IPP) of 3.5 A with a 10/1000µs waveform. This value is guaranteed per datasheet specifications and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Can SMBJ100C be used in bidirectional signal line protection?
No, SMBJ100C is unidirectional and not suitable for bidirectional signal lines such as RS-485 or CAN. For such applications, the bidirectional variant SMBJ100CA must be used, as it provides symmetrical clamping in both polarities. Using SMBJ100C on AC or reversible signals risks forward conduction and failure.
What is the leakage current specification for SMBJ100C at its working voltage?
The SMBJ100C exhibits a maximum blocking leakage current (ID) of 1 µA at its working stand-off voltage (VWM) of 100 V and TA = 25°C. This low leakage preserves signal integrity and minimizes power loss in high-impedance or battery-powered circuits where standby current is critical.
SMBJ100C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- 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:
- 179V
- Current - Peak Pulse (10/1000µs):
- 3.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ100C FAQ
1.How can I place an order for SMBJ100C through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100C 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 SMBJ100C reliable?
The price and inventory of SMBJ100C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ100C is usually 5 days.
3.What payment methods are accepted for SMBJ100C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100C?
SMBJ100C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100C 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 SMBJ100C?
For technical support, including SMBJ100C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100C requirements.
6.How does Aetrix verify that SMBJ100C is sourced from the original manufacturer or authorized distributors?
All SMBJ100C 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 SMBJ100C meets industry standards.
7.What is the process for return or replacement of SMBJ100C?
All SMBJ100C units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100C, 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 SMBJ100C part is unused and in its original packaging.
Return procedure for SMBJ100C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100C Tags
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