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Vishay General Semiconductor - Diodes Division SMAJ100CA-E3/61
- Part No.:
- SMAJ100CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ100CA-E3/61.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,164
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Product details
Overview
SMAJ100CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection on power and signal lines. It features a 100 V standoff voltage (VWM), 111–123 V breakdown range (VBR), 162 V maximum clamping voltage (VC) at 1.9 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive, industrial, and telecom systems to safeguard MOSFETs, ICs, and sensor interfaces against ESD and inductive switching transients.
For engineers reviewing the SMAJ100CA-E3/61 datasheet, SMAJ100CA-E3/61 pinout, SMAJ100CA-E3/61 application, or SMAJ100CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, UL 497B recognition, AEC-Q101 qualification eligibility (via HE3 suffix), MSL Level 1 moisture sensitivity, and DO-214AC (SMA) package compatibility with automated SMT assembly.
Technical Context
This TVS operates symmetrically in both directions due to its bidirectional CA construction, enabling suppression of positive and negative transients without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance supports rapid energy dissipation during 8.3 ms surges up to 40 A IFSM.
The device complies with ANSI/IEEE C62.35 surge standards and delivers consistent clamping performance across -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W - optimized for PCB copper pad layouts per recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) terminal pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 111 V / 123 V at 1 mA - guaranteed breakdown threshold defining transient turn-on window |
| VC @ IPPM | 162 V at 1.9 A - clamped voltage limiting stress on downstream components during surge |
| PPPM | 400 W (10/1000 μs) - peak transient energy absorption capacity under standard surge waveform |
| ID @ VWM | ≤1.0 μA - ultra-low reverse leakage preserving signal integrity and standby power efficiency |
| TJ max | +150 °C - extended thermal operating range supporting under-hood automotive and high-ambient industrial use |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 2.54 mm lead pitch and MSL Level 1 handling |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. Bidirectional construction means no polarity marking - terminals are functionally symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no cathode band marking required for bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management |
| 400 W peak pulse power | Withstands IEC 61000-4-5 surge events up to 4 kV (line-to-earth) when properly laid out on 5 mm² copper pads |
| UL 497B recognized | Qualified for telecom and data line protector classification (QVGQ2, file E136766), simplifying safety certification |
| AEC-Q101 qualified option | HE3 suffix variant meets automotive reliability requirements including HTOL, TC, and HTRB testing |
| MSL Level 1 | Zero floor life limitation - can be stored indefinitely at ≤30 °C/60% RH and mounted without baking |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs and body control modules from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary shunt clamp absorbing >400 W surge energy to hold rail voltage below 162 V during ISO 7637-2 Pulse 5a events. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers by limiting transient overvoltage within safe operating area. | Use Scenario: Shielding analog outputs (4–20 mA, 0–10 V) and digital I/O of PLC modules from field-induced surges in factory automation. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) voltage clamp placed directly at connector entry point to divert induced lightning or EFT energy. Use Value: Maintains signal fidelity and system uptime by suppressing transients before they propagate into precision ADCs or isolation barriers. |
| Telecom Data Line Surge Suppression | Consumer Device USB/DisplayPort Port Protection |
Use Scenario: Safeguarding Ethernet PHYs, DSL line drivers, and xDSL splitters against induced surges on twisted-pair telecom lines. IC Role / Device Role / Timing Role: Bidirectional TVS placed differential-mode across pairs to clamp common-mode and differential-mode transients simultaneously. Use Value: Meets GR-1089-CORE Level 3 (2 kV/10/700 μs) requirements while minimizing capacitance impact on 100BASE-TX signal integrity. | Use Scenario: Protecting high-speed interface ports (USB 2.0, HDMI, DisplayPort) in laptops and docking stations from ESD and hot-swap transients. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF at VWM) shunt suppressor located adjacent to connector to minimize stub length and preserve signal rise time. Use Value: Passes IEC 61000-4-2 ±15 kV contact discharge without degradation, ensuring port reliability and user safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA-E3/52 | Same VWM/VBR/VC specs but SMB (DO-214AA) package - 30 % larger footprint, higher thermal mass | Better suited for higher average power dissipation scenarios where board space allows | Select when thermal derating margin is critical and PCB layout permits larger pad area |
| P6SMB100CA | Identical electrical specs and DO-214AA package; manufactured by ON Semiconductor, RoHS-compliant | No AEC-Q101 qualified variant available; UL recognition limited to QVGQ2-equivalent only | Choose for cost-sensitive industrial designs where automotive qualification is not required |
Compared with SMBJ100CA-E3/52 and P6SMB100CA, SMAJ100CA-E3/61 offers the smallest footprint in the 100 V bidirectional TVS class (SMA vs. SMB), enabling compact placement near connectors or IC pins - critical for space-constrained automotive modules and portable electronics.
Availability
SMAJ100CA-E3/61 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom line surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMAJ100CA-E3/61 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, power efficiency, and application-specific optimization.
The SMAJ series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness against ESD, lightning, and inductive switching is non-negotiable.
FAQ
What is the clamping voltage of SMAJ100CA-E3/61 under a 10/1000 μs surge?
The SMAJ100CA-E3/61 exhibits a maximum clamping voltage (VC) of 162 V when subjected to its rated peak pulse current of 1.9 A using the standardized 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88390 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMAJ100CA-E3/61 suitable for automotive applications?
SMAJ100CA-E3/61 itself is commercial-grade (E3 suffix), but the same die is offered in AEC-Q101 qualified versions under part numbers like SMAJ100CAHE3_A/H. For automotive use, specify the HE3 suffix variant - it undergoes stress testing per AEC-Q101 including HTOL, temperature cycling, and HTRB, and carries the same electrical specs and UL 497B recognition as SMAJ100CA-E3/61.
Does SMAJ100CA-E3/61 have polarity markings?
No - SMAJ100CA-E3/61 is a bidirectional TVS diode and carries no cathode band or polarity marking. Its symmetrical construction allows either terminal to serve as anode or cathode depending on transient polarity, eliminating orientation concerns during automated placement and simplifying PCB layout for AC or floating lines.
What is the maximum operating temperature for SMAJ100CA-E3/61?
The SMAJ100CA-E3/61 has a specified operating junction temperature range of -55 °C to +150 °C. This wide range supports deployment in under-hood automotive environments, industrial motor drives, and outdoor telecom equipment - provided thermal design accounts for its RθJA of 120 °C/W and uses minimum recommended 0.2" × 0.2" copper pads per terminal.
How does SMAJ100CA-E3/61 differ from unidirectional SMAJ100A-E3/61?
SMAJ100CA-E3/61 is bidirectional with symmetrical clamping in both polarities and no cathode marking, whereas SMAJ100A-E3/61 is unidirectional, features a cathode band, and conducts only during reverse-biased transients. Electrically, SMAJ100CA-E3/61 has identical VWM (100 V), VBR (111–123 V), and VC (162 V) specs but differs in leakage behavior and application scope - CA types protect AC signals and floating buses; A types suit DC rails with defined polarity.
SMAJ100CA-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- 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):
- 1.9A
- 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)
SMAJ100CA-E3/61 FAQ
1.How can I place an order for SMAJ100CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ100CA-E3/61 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 SMAJ100CA-E3/61 reliable?
The price and inventory of SMAJ100CA-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ100CA-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ100CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ100CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ100CA-E3/61?
SMAJ100CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ100CA-E3/61 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 SMAJ100CA-E3/61?
For technical support, including SMAJ100CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ100CA-E3/61 requirements.
6.How does Aetrix verify that SMAJ100CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ100CA-E3/61 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 SMAJ100CA-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ100CA-E3/61?
All SMAJ100CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ100CA-E3/61, 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 SMAJ100CA-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ100CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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