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Vishay General Semiconductor - Diodes Division SMAJ100C-E3/5A
- Part No.:
- SMAJ100C-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ100C-E3/5A.pdf
- Description:
- TVS DIODE 100VWM 179VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,828
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Product details
Overview
SMAJ100C-E3/5A from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on signal or power lines. It features 100 V stand-off voltage (VWM), 179 V maximum clamping voltage (VC) at 1.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting automotive sensor interfaces and industrial I/O lines against ESD and inductive switching surges.
For engineers reviewing the SMAJ100C-E3/5A datasheet, SMAJ100C-E3/5A pinout, SMAJ100C-E3/5A application, or SMAJ100C-E3/5A equivalent, key selection criteria include bi-directional surge handling capability, low leakage (<1 µA at VWM), RoHS-compliant matte tin terminations, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 111 V and 136 V at 1 mA test current. Its clamping behavior is characterized by low incremental surge resistance and fast response time - enabling effective suppression of transients induced by lightning, relay bounce, or motor commutation.
The device is rated for junction temperatures from −55 °C to +150 °C, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead). It meets JESD201 Class 1A whisker resistance and is qualified per J-STD-020 MSL Level 1, supporting lead-free reflow up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - maximum continuous reverse working voltage before clamping begins |
| VC @ IPPM | 179 V at 1.7 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak pulse power dissipation capability under standardized surge waveform |
| IPPM | 1.7 A - maximum non-repetitive peak pulse current the device safely conducts |
| ID @ VWM | <1 µA - ultra-low reverse leakage ensures minimal standby power loss in high-impedance circuits |
| TJ Range | −55 °C to +150 °C - supports operation in under-hood automotive and industrial ambient environments |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional configuration with no polarity marking - symmetrical terminals enable mounting without orientation concern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Bi-directional terminals conduct surge current equally in either direction; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| 400 W peak pulse power | Handles high-energy transients from inductive load switching in industrial control systems |
| MSL Level 1 rating | Permits direct placement on PCB without dry-pack or baking prior to reflow soldering |
| RoHS-compliant matte tin leads | Ensures reliable solderability per J-STD-002 and eliminates lead-based contamination risk |
| Low clamping ratio (VC/VWM = 1.79) | Minimizes overvoltage exposure to protected ICs compared to higher-ratio suppressors |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional TVS placed across differential signal pair or supply rail to clamp transients before they reach sensitive analog front-end or communication IC. Use Value: Prevents latch-up or permanent damage to 12 V–24 V automotive sensors operating near battery rails, leveraging 100 V VWM and 179 V VC. |
Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from field wiring surges and ground potential differences. IC Role / Device Role / Timing Role: Standoff-rated TVS connected between input terminal and ground to absorb repetitive 10/1000 µs transients without degradation. Use Value: Maintains signal integrity under harsh factory floor conditions where VWM = 100 V accommodates common-mode voltage swings while limiting clamping to 179 V. |
| Telecom Line Card Protection | Consumer Appliance Motor Control |
Use Scenario: Safeguarding Ethernet PHY interface components and PoE circuitry against lightning-induced surges on unshielded twisted-pair cabling. IC Role / Device Role / Timing Role: Bi-directional TVS deployed on differential data lines to suppress common-mode transients without distorting signal integrity. Use Value: Low capacitance (typ. <100 pF at 0 V) avoids signal attenuation at 100BASE-TX frequencies while delivering 400 W surge immunity. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: TVS mounted across motor terminals or H-bridge outputs to divert inductive kickback energy away from driver MOSFETs. Use Value: Withstands 40 A peak forward surge (IFSM) and operates reliably up to +150 °C junction temperature in enclosed motor compartments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100CA-E3/5A | Same electrical specs and DO-214AC package; 'CA' suffix explicitly denotes bi-directional variant per Vishay naming convention | No functional difference - 'C' and 'CA' are used interchangeably in Vishay documentation for bi-directional types | Select SMAJ100CA-E3/5A if explicit bi-directional designation is required in BOM or compliance reporting |
| SMCJ100C-E3/5A | Higher 1500 W PPPM, same VWM/VC, but in larger DO-214AB (SMC) package - 2.5× footprint increase | Better suited for higher-energy transients (e.g., 1 kV/1 kA surge testing); not drop-in due to pad layout mismatch | Choose only when system-level surge testing exceeds 400 W capability and board space allows SMC footprint |
Compared with SMAJ100C-E3/5A, SMAJ100CA-E3/5A offers identical protection performance in the same footprint, while SMCJ100C-E3/5A trades compactness for higher surge margin - making the SMAJ100C-E3/5A optimal for space-constrained 100 V rail protection where 400 W rating suffices.
Availability
SMAJ100C-E3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line card protection, and consumer appliance motor control requiring stable component supply and full traceability.
Supply support for SMAJ100C-E3/5A 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 power management, sensing, and protection devices with emphasis on reliability and automotive qualification.
The SMAJ series was developed specifically for robust, surface-mount transient suppression in automotive, industrial, and telecom applications - prioritizing low clamping ratio, high surge tolerance, and automated assembly compatibility.
FAQ
What does the 'C' suffix mean in SMAJ100C-E3/5A?
The 'C' suffix in SMAJ100C-E3/5A indicates a bi-directional configuration, meaning the device provides symmetrical transient suppression in both polarities. This is confirmed in Vishay Document 88390, which states "For bi-directional use C or CA suffix" and lists electrical characteristics applying "in both directions." The SMAJ100C-E3/5A has no polarity marking and functions identically regardless of terminal orientation.
Is SMAJ100C-E3/5A RoHS compliant and lead-free solder compatible?
Yes, SMAJ100C-E3/5A is RoHS 2002/95/EC compliant and features matte tin-plated leads qualified per J-STD-002 and JESD22-B102. It supports lead-free reflow soldering with a maximum peak temperature of 260 °C for 40 seconds, and meets JESD201 Class 1A whisker resistance requirements - fully documented in the mechanical data section of Vishay's 88390 datasheet.
What is the maximum clamping voltage of SMAJ100C-E3/5A under surge conditions?
The maximum clamping voltage (VC) of SMAJ100C-E3/5A is 179 V, measured at its peak pulse current (IPPM) of 1.7 A using the standardized 10/1000 µs waveform. This value is specified in the Electrical Characteristics table on page 3 of Vishay Document 88390 and defines the upper voltage limit imposed on protected circuitry during transient events.
Can SMAJ100C-E3/5A be used in automotive applications?
Yes, SMAJ100C-E3/5A is suitable for automotive applications including sensor interfaces and body electronics, as it meets AEC-Q101 requirements when ordered with the HE3 suffix (e.g., SMAJ100CHE3/5A). While the standard E3 version is commercial-grade, its −55 °C to +150 °C operating range, MSL Level 1 rating, and 400 W surge capability align with many automotive subsystem requirements - confirmed in Vishay's primary characteristics and thermal data.
How does SMAJ100C-E3/5A compare to uni-directional SMAJ100A-E3/5A?
SMAJ100C-E3/5A is bi-directional with symmetrical clamping, whereas SMAJ100A-E3/5A is uni-directional and features a cathode band marking. Their VWM (100 V) and VC (179 V vs. 162 V) differ slightly due to internal structure - the uni-directional version clamps lower but requires correct polarity installation. SMAJ100C-E3/5A eliminates orientation risk in AC or floating circuits, making it preferred for differential signal protection where polarity is undefined.
SMAJ100C-E3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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:
- 179V
- Current - Peak Pulse (10/1000µs):
- 1.7A
- Power - Peak Pulse:
- 300W
- 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-214AC (SMA)
SMAJ100C-E3/5A FAQ
1.How can I place an order for SMAJ100C-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ100C-E3/5A 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 SMAJ100C-E3/5A reliable?
The price and inventory of SMAJ100C-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ100C-E3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ100C-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ100C-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ100C-E3/5A?
SMAJ100C-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ100C-E3/5A 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 SMAJ100C-E3/5A?
For technical support, including SMAJ100C-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ100C-E3/5A requirements.
6.How does Aetrix verify that SMAJ100C-E3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ100C-E3/5A 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 SMAJ100C-E3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ100C-E3/5A?
All SMAJ100C-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ100C-E3/5A, 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 SMAJ100C-E3/5A part is unused and in its original packaging.
Return procedure for SMAJ100C-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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