My Inquiry
My Account
Taiwan Semiconductor Corporation SMBJ100CA
- Part No.:
- SMBJ100CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100CA.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ100CA from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy ESD and surge protection in power rails and signal lines. It features a 100V working stand-off voltage (VWM), 111–136V breakdown voltage (VBR), 162V maximum clamping voltage (VC) at 3.8A peak impulse current, and 600W peak pulse power rating per 10/1000µs waveform - deployed in automotive lighting control, industrial I/O interfaces, and DC power input stages.
For engineers reviewing the SMBJ100CA datasheet, SMBJ100CA pinout, SMBJ100CA application, or SMBJ100CA equivalent, key selection criteria include bidirectional clamping capability, DO-214AA (SMB) package compatibility with automated SMT assembly, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, and low leakage (<1µA at 100V) for low-power system integrity.
Technical Context
The SMBJ100CA implements a glass-passivated silicon junction optimized for fast transient response (<1.0ps) and stable clamping under repetitive surge stress. Its bidirectional configuration enables symmetrical voltage limiting without polarity dependency, supporting both positive and negative transients on the same line.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, enabling reliable operation up to TJ = +150°C. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - confirming suitability for reflow-soldered industrial and automotive PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 111 / 136 V @ 1 mA - Confirmed breakdown threshold range ensuring predictable turn-on margin |
| VC @ IPP | 162 V @ 3.8 A - Clamped voltage during 10/1000µs surge, defining worst-case downstream overvoltage |
| PPK | 600 W - Peak pulse power handling per standard waveform, critical for ISO 7637-2 compliance |
| ID @ VWM | <1 µA - Low leakage preserves battery life and signal integrity in always-on circuits |
| Package | DO-214AA (SMB) - Standardized surface-mount outline with 0.090g mass and UL 94V-0 molding compound |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability; polarity indicated by band (bidirectional function confirmed - no anode/cathode functional distinction in circuit use).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (marked side) | Transient return path (bidirectional) | Functions identically as cathode under reverse surge; band denotes terminal orientation only, not polarity-dependent operation |
| Cathode (unmarked side) | Transient return path (bidirectional) | Electrically symmetric with anode; both terminals conduct equally during ± transients per bipolar design |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| ISO 7637-2 compliance | Validated for automotive load-dump and inductive-switching immunity (Pulse 1/2a/2b/3a/3b) |
| Fast response time <1.0 ps | Clamps ESD events before sensitive ICs experience latch-up or gate oxide damage |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS directives for environmentally constrained applications |
Applications
| Automotive Lighting Control | Industrial PLC Digital I/O |
|---|---|
Use Scenario: Protecting LED driver ICs and CAN transceivers from load-dump surges and relay coil flyback in headlamp modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail (VBAT–GND) and data lines (CAN_H/CAN_L) to clamp ±100V transients. Use Value: Limits clamped voltage to 162V, preventing damage to 75V-rated CAN PHYs and 60V logic inputs while maintaining ISO 7637-2 Pulse 5a compliance. | Use Scenario: Safeguarding microcontroller GPIOs and optocoupler inputs against EFT bursts and field-wiring induced spikes in factory automation panels. IC Role / Device Role / Timing Role: TVS connected between each digital input line and chassis ground to shunt 4kV EFT (IEC 61000-4-4) energy. Use Value: Sub-1µA leakage avoids false triggering of 5V CMOS inputs; 600W rating handles multiple 5/50ns burst sequences without degradation. |
| DC Power Input Protection | ESD-Sensitive Sensor Interface |
Use Scenario: Front-end protection for 24V/48V DC power supplies feeding embedded controllers in telecom and networking equipment. IC Role / Device Role / Timing Role: Placed across input terminals (VIN–GND) to absorb load-dump transients up to 120V and 600W peak power. Use Value: 100V VWM allows safe operation under nominal 24V/48V rails with 20% tolerance; 162V VC ensures downstream regulators remain within absolute max ratings. | Use Scenario: Shielding analog front-ends of temperature/humidity sensors from human-body-model (HBM) ESD events during board handling and field deployment. IC Role / Device Role / Timing Role: TVS mounted directly at sensor connector pins to limit HBM pulses (±8kV) before reaching ADC input stages. Use Value: <1.0ps response captures ESD rise time; 162V clamping prevents >5V excursion into 3.3V ADC reference domains, preserving measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100A | Unidirectional; VF = 5.0V @ 50A; same VWM/VBR/VC specs but asymmetric conduction | Requires explicit polarity assignment; unsuitable for AC-coupled or floating signal lines | Select SMBJ100A only when protecting unidirectional DC rails with known polarity and no need for reverse-transient blocking |
| SMCJ100CA | Same VWM/VBR/VC but higher PPK = 1500W; larger DO-214AB (SMC) package (7.11 × 6.22 mm vs. 4.57 × 3.94 mm) | Occupies more PCB area; better suited for higher-energy surges where space permits | Choose SMCJ100CA when system-level testing reveals 600W insufficient and layout allows larger footprint |
Compared with SMBJ100CA, SMBJ100A lacks bidirectional symmetry and requires careful polarity routing, while SMCJ100CA delivers 2.5× higher surge capacity at the cost of 2.3× larger board area - making SMBJ100CA the optimal balance of compactness, bipolar robustness, and automotive-grade surge immunity.
Availability
SMBJ100CA is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC digital I/O, and DC power input protection requiring stable component supply across production lifecycles.
Supply support for SMBJ100CA 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, TVS diodes, rectifiers, and MOSFETs - headquartered in Hsinchu, Taiwan.
The SMBJ series was engineered specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing ISO 7637-2 compliance, low leakage, and automated SMT compatibility.
FAQ
What does the 'CA' suffix indicate in SMBJ100CA?
The 'CA' suffix in SMBJ100CA denotes a bidirectional configuration - meaning the device provides symmetrical clamping for both positive and negative transients without polarity constraints. Unlike unidirectional variants (e.g., SMBJ100A), SMBJ100CA has no functional anode or cathode; both terminals behave identically under surge conditions. This makes SMBJ100CA ideal for AC-coupled lines, floating buses, or systems where transient polarity cannot be guaranteed.
Does SMBJ100CA meet automotive surge immunity standards?
Yes, SMBJ100CA meets ISO 7637-2 requirements for Pulse 1 (inductive load disconnect), Pulse 2a (sudden load removal), Pulse 2b (supply interruption), Pulse 3a (capacitive coupling), and Pulse 3b (ground noise). Its 600W peak pulse power rating, 162V clamping voltage at 3.8A, and glass-passivated junction ensure robust performance under repeated automotive transients - validated per manufacturer test reports and widely adopted in Tier-1 lighting and body-control modules.
What is the maximum clamping voltage of SMBJ100CA and how is it measured?
The maximum clamping voltage (VC) of SMBJ100CA is 162 V, measured at a peak impulse current (IPP) of 3.8 A using the standardized 10/1000 µs double-exponential surge waveform. This value represents the worst-case voltage seen downstream during a surge event and is guaranteed across temperature and lifetime per Taiwan Semiconductor's R2104 specification. It directly determines whether protected ICs remain within their absolute maximum voltage ratings.
Can SMBJ100CA be used in place of SMBJ100A?
No - SMBJ100CA and SMBJ100A are not interchangeable without circuit review. SMBJ100CA is bidirectional and polarity-agnostic, while SMBJ100A is unidirectional and conducts only in reverse bias. Substituting SMBJ100CA for SMBJ100A may cause unintended conduction in DC circuits; replacing SMBJ100CA with SMBJ100A removes protection against negative transients. Always verify signal topology and transient polarity before substitution.
What is the junction-to-ambient thermal resistance (RθJA) of SMBJ100CA?
The junction-to-ambient thermal resistance (RθJA) of SMBJ100CA is 55°C/W, measured under standard JEDEC conditions (single device on 1-inch² FR-4 board with 2 oz copper). This value defines the temperature rise at the silicon junction per watt of sustained power dissipation. For reliable operation at full 600W surge rating, short-duration pulses are assumed; steady-state derating applies above 25°C ambient per Fig.2 in the datasheet.
SMBJ100CA 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:
- 162V
- Current - Peak Pulse (10/1000µs):
- 3.7A
- 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)
SMBJ100CA FAQ
1.How can I place an order for SMBJ100CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100CA 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 SMBJ100CA reliable?
The price and inventory of SMBJ100CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ100CA is usually 5 days.
3.What payment methods are accepted for SMBJ100CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100CA?
SMBJ100CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100CA 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 SMBJ100CA?
For technical support, including SMBJ100CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100CA requirements.
6.How does Aetrix verify that SMBJ100CA is sourced from the original manufacturer or authorized distributors?
All SMBJ100CA 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 SMBJ100CA meets industry standards.
7.What is the process for return or replacement of SMBJ100CA?
All SMBJ100CA units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100CA, 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 SMBJ100CA part is unused and in its original packaging.
Return procedure for SMBJ100CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100CA Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
