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Vishay General Semiconductor - Diodes Division SMAJ100C-E3/61
- Part No.:
- SMAJ100C-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ100C-E3/61.pdf
- Description:
- TVS DIODE 100VWM 179VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,137
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Product details
Overview
SMAJ100C-E3/61 from Vishay General Semiconductor is a bi-directional surface-mount Transient Voltage Suppressor (TVS) 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 (IPPM), 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 lightning-induced surges.
For engineers reviewing the SMAJ100C-E3/61 datasheet, SMAJ100C-E3/61 pinout, SMAJ100C-E3/61 application, or SMAJ100C-E3/61 equivalent, key selection criteria include bi-directional clamping symmetry, low leakage (<1 µA at 100 V), MSL Level 1 moisture sensitivity, and compatibility with automated SMT assembly on standard 5.0 × 5.0 mm copper pads.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with identical breakdown (VBR min/max = 111 V / 136 V at 1 mA test current) and clamping behavior in either direction. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns) to transient events.
The device is rated for 150 °C maximum junction temperature and exhibits 120 °C/W typical thermal resistance (junction-to-ambient) when mounted per recommended pad layout. It meets RoHS 2002/95/EC and is qualified to AEC-Q101 only in HE3-suffix variants - the E3/61 version is commercial-grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - maximum continuous reverse working voltage before clamping initiates |
| VC @ IPPM | 179 V at 1.7 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak pulse power handling capability under standardized surge waveform |
| IPPM | 1.7 A - maximum non-repetitive surge current supported at VC = 179 V |
| ID @ VWM | <1 µA - ultra-low reverse leakage ensures minimal standby power loss in high-impedance circuits |
| TJ Range | −55 °C to +150 °C - operational junction temperature range compatible with under-hood automotive environments |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline with matte tin-plated leads, J-STD-002 solderable |
Pinout & Package
DO-214AC (SMA) package: molded epoxy case with two terminals; bi-directional construction has no polarity marking - both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical bidirectional avalanche breakdown enables clamping of positive or negative transients without orientation dependency |
| Cathode band (absent) | Polarity indicator | Not present on bi-directional types - device functions identically regardless of PCB placement orientation |
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 | Withstands IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge events on 24 V industrial buses |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking preconditioning |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| RoHS-compliant matte tin plating | Meets J-STD-002 solderability requirements and eliminates lead-free assembly concerns |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting LIN or SENT sensor outputs from load-dump and inductive switching transients in engine control modules. IC Role / Device Role / Timing Role: Bi-directional TVS placed across differential signal pair to clamp ±100 V transients before they reach analog front-end or microcontroller input pins. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor interface ICs while maintaining signal integrity below 100 MHz due to low junction capacitance (~100 pF). |
Use Scenario: Safeguarding CANH/CANL lines in factory automation gateways exposed to 24 V bus coupling noise and EFT bursts. IC Role / Device Role / Timing Role: Standoff-rated TVS connected line-to-line and line-to-ground to suppress common-mode and differential-mode surges up to 400 W. Use Value: Maintains CAN FD bit timing integrity by limiting clamping overshoot to ≤179 V, avoiding false dominant/recessive state interpretation. |
| Telecom Power Supply Input Protection | Consumer USB Port ESD Suppression |
|
Use Scenario: Secondary-side overvoltage suppression on 48 V telecom DC-DC converter outputs feeding remote radio units. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing repetitive 10/1000 µs surges induced by relay contact bounce or hot-swap events. Use Value: Delivers 400 W pulse handling without degradation over >10,000 surge cycles, validated per IEC 61000-4-5. |
Use Scenario: Board-level ESD protection for USB 2.0 D+/D− lines in smart home hubs subjected to ±8 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance bi-directional clamp placed adjacent to connector to shunt ESD current before reaching USB transceiver. Use Value: Achieves <1 µA leakage at 100 V, eliminating signal attenuation or DC bias shift in high-speed data paths. |
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-E3/61 | Identical electrical specs and packaging; 'CA' suffix explicitly denotes bi-directional variant per Vishay naming convention (C = bi-directional, A = enhanced VBR tolerance) | No functional difference - used interchangeably in designs requiring bi-directional clamping at 100 V VWM | Select SMAJ100CA-E3/61 if BOM requires explicit bi-directional designation per internal part-numbering policy |
| SMBJ100C-E3/52 | Same VWM/VC ratings but in larger DO-214AA (SMB) package; 600 W PPPM rating and higher IPPM (2.7 A) | Better suited for higher-energy surge environments (e.g., outdoor telecom enclosures) where board space allows SMB footprint | Choose SMBJ100C-E3/52 only when surge energy exceeds 400 W capability and PCB layout accommodates 3.5 mm × 4.6 mm vs. 2.8 mm × 4.6 mm SMA outline |
Compared with SMAJ100C-E3/61, SMAJ100CA-E3/61 offers identical protection performance with formalized bi-directional labeling, while SMBJ100C-E3/52 trades compact size for 50 % higher surge capacity - making the original SMAJ100C-E3/61 optimal for space-constrained automotive and industrial PCBs needing verified 400 W clamping.
Availability
SMAJ100C-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, telecom power supply inputs, and consumer USB port protection requiring stable component supply and full traceability.
Supply support for SMAJ100C-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 and application-specific optimization.
The SMAJ series was developed for robust, surface-mount transient suppression in automotive, industrial, and communications systems - prioritizing low-profile packaging, repeatable clamping, and automated assembly compatibility.
FAQ
What is the clamping voltage of SMAJ100C-E3/61 under a 10/1000 µs surge?
The SMAJ100C-E3/61 clamps to a maximum of 179 V when subjected to its rated peak pulse current of 1.7 A using the standard 10/1000 µs waveform. This value is measured per Fig. 1 and Fig. 3 in Vishay document 88390 and represents the upper limit of voltage seen by protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMAJ100C-E3/61 suitable for automotive applications requiring AEC-Q101 qualification?
No - SMAJ100C-E3/61 carries the E3 suffix, indicating RoHS-compliant commercial-grade construction. For AEC-Q101 qualification, the HE3-suffix variant (e.g., SMAJ100C-HE3/61) must be selected, as explicitly stated in the Mechanical Data section of Vishay document 88390. The SMAJ100C-E3/61 is not tested or certified to AEC-Q101 stress requirements.
How does the bi-directional nature of SMAJ100C-E3/61 affect PCB layout?
The SMAJ100C-E3/61 has no polarity marking and functions identically in either orientation, simplifying PCB layout and eliminating risk of incorrect placement. Unlike uni-directional TVS diodes, it can be placed across any two points requiring symmetrical overvoltage protection - such as differential signal pairs or AC power rails - without regard to anode/cathode alignment.
What is the maximum reverse leakage current specified for SMAJ100C-E3/61 at its stand-off voltage?
At its 100 V stand-off voltage (VWM), the SMAJ100C-E3/61 exhibits a maximum reverse leakage current (ID) of 1 µA at 25 °C, as confirmed in the Electrical Characteristics table on page 3 of Vishay document 88390. This ultra-low leakage preserves signal integrity in high-impedance sensor and communication circuits.
Does SMAJ100C-E3/61 require special handling for moisture sensitivity?
No - SMAJ100C-E3/61 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and may be reflowed at a peak temperature of 260 °C without prior baking. This eliminates moisture sensitivity concerns during standard SMT assembly and supports direct use from dry pack storage.
SMAJ100C-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:
- 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-E3/61 FAQ
1.How can I place an order for SMAJ100C-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ100C-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 SMAJ100C-E3/61 reliable?
The price and inventory of SMAJ100C-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 SMAJ100C-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ100C-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ100C-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ100C-E3/61?
SMAJ100C-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ100C-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 SMAJ100C-E3/61?
For technical support, including SMAJ100C-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ100C-E3/61 requirements.
6.How does Aetrix verify that SMAJ100C-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ100C-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 SMAJ100C-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ100C-E3/61?
All SMAJ100C-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ100C-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 SMAJ100C-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ100C-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ100C-E3/61 Tags
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