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Vishay General Semiconductor - Diodes Division SMAJ100A-M3/61
- Part No.:
- SMAJ100A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ100A-M3/61.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMAJ100A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping fast voltage transients on power and signal lines. It features a 100 V stand-off voltage (VWM), 111–123 V breakdown voltage (VBR) at 1 mA, 162 V maximum clamping voltage (VC) at 1.9 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the SMAJ100A-M3/61 datasheet, SMAJ100A-M3/61 pinout, SMAJ100A-M3/61 application, or SMAJ100A-M3/61 equivalent, key selection criteria include unidirectional polarity, 1.9 A IPPM capability at 162 V clamping, 1.0 μA max reverse leakage at VWM, -55 °C to +150 °C operating junction temperature, and halogen-free RoHS-compliant M3 suffix construction.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by overvoltage events exceeding its reverse stand-off voltage of 100 V. Its silicon avalanche junction provides sub-nanosecond response time and low dynamic impedance during surge conduction, enabling effective suppression of ESD, lightning-induced surges, and inductive switching transients.
The device is rated for 400 W peak pulse power (10/1000 μs) up to 78 V and derates to 300 W above that threshold; thermal resistance is 120 °C/W junction-to-ambient (RθJA) on standard 0.2" × 0.2" copper pads, with 30 °C/W junction-to-lead (RθJL) supporting localized heat dissipation in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR (min/max) | 111 V / 123 V at 1 mA - Breakdown voltage range ensures reliable turn-on within specification across process variation. |
| VC @ IPPM | 162 V at 1.9 A - Clamping voltage under full-rated surge; determines protected circuit's maximum transient exposure level. |
| IPPM | 1.9 A - Peak pulse current capability with 10/1000 μs waveform; defines surge energy handling per event. |
| ID @ VWM | ≤1.0 μA - Reverse leakage current at stand-off voltage; ensures minimal power loss and signal integrity in standby. |
| TJ max | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-temperature industrial environments. |
| Package | SMA (DO-214AC) - Surface-mount outline with cathode band marking; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, MSL Level 1 (260 °C peak reflow). Polarity marked with cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (cathode-banded end is opposite) | Connected to lower-potential side of protected line; enables unidirectional clamping from cathode to anode during overvoltage. |
| Cathode | Reverse-biased terminal (marked with band) | Connected to higher-potential side (e.g., VCC rail or signal line); avalanche conduction initiates when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 3/4 surges without degradation under repetitive stress up to 0.01% duty cycle. |
| 162 V clamping voltage at 1.9 A | Limits transient overshoot on 100 V systems to ≤62% above nominal rail, safeguarding downstream 150 V-rated components. |
| Low 1.0 μA reverse leakage at 100 V | Minimizes standby current draw and avoids false triggering in high-impedance sensor or battery-backed circuits. |
| Halogen-free, RoHS-compliant M3 suffix | Meets environmental compliance requirements for automotive and industrial OEMs while maintaining JESD201 Class 2 whisker resistance. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles without baking, reducing manufacturing complexity and cost. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Suppresses load-dump transients (up to 120 V) on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and ground to clamp positive-going surges before they reach LDOs or microcontrollers. Use Value: Limits peak voltage to 162 V during 100 ms load-dump events, preventing latch-up or gate oxide damage in 150 V-rated power management ICs. |
Use Scenario: Shields analog front-end inputs of pressure/temperature sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector entry point to shunt fast transients (<1 ns rise time) before reaching ADC input stages. Use Value: Sub-μA leakage preserves sensor offset accuracy; 162 V clamping prevents saturation of rail-to-rail op-amps powered from 5 V or 3.3 V supplies. |
| Telecom Line Surge Suppression | Motor Drive Gate Driver Protection |
|
Use Scenario: Protects RS-485 transceivers and PHY interfaces from induced surges on long-distance data lines in outdoor base stations. IC Role / Device Role / Timing Role: Unidirectional TVS connected between differential pair and local ground to absorb common-mode transients without distorting signal integrity. Use Value: 100 V VWM allows compatibility with ±12 V RS-485 common-mode range; 1.9 A IPPM handles 1 kV/500 Ω IEC 61000-4-5 surges. |
Use Scenario: Guards high-side and low-side gate drivers in BLDC inverters from Miller-induced voltage spikes during MOSFET switching. IC Role / Device Role / Timing Role: TVS placed across gate-source terminals of SiC or GaN FETs to clamp dv/dt-induced overshoot exceeding VGS rating. Use Value: 162 V clamping ensures gate oxide safety for 200 V-rated drivers; fast response prevents spurious turn-on during 100 V/ns edge transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ100A-E3/61 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs M3). | No AEC-Q101 qualification; suitable for commercial-grade industrial use only. | Select when halogen-free requirement is not mandated and cost optimization is prioritized. |
| SMAJ100AHE3_A/H | Identical electrical parameters; adds AEC-Q101 qualification and HE3 suffix (RoHS + automotive grade). | Qualified for automotive under-hood applications; requires H-coded tape-and-reel packaging. | Choose for automotive designs requiring PPAP documentation and extended temperature validation. |
Compared with SMAJ100A-M3/61, the E3 variant offers identical protection performance with lower environmental compliance (non-halogen-free), while the HE3 variant adds automotive qualification at higher cost and different packaging - making M3 the optimal balance of halogen-free compliance, commercial reliability, and supply chain flexibility.
Availability
SMAJ100A-M3/61 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom line surge suppression, and motor drive gate driver safeguarding requiring stable component supply across production lifecycles.
Supply support for SMAJ100A-M3/61 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, efficiency, and application-specific optimization.
The SMAJ series is engineered for high-energy transient suppression in space-constrained surface-mount applications, targeting automotive, industrial, and communications systems where robustness and repeatable clamping performance are critical.
FAQ
What is the clamping voltage of SMAJ100A-M3/61 under maximum rated surge current?
The SMAJ100A-M3/61 exhibits a maximum clamping voltage (VC) of 162 V when subjected to its rated peak pulse current (IPPM) of 1.9 A using the standardized 10/1000 μs waveform. This value is measured per JEDEC test conditions and guarantees the protected circuit will not experience voltages exceeding 162 V during such transient events. The SMAJ100A-M3/61 maintains this clamping performance across its qualified operating temperature range.
Is SMAJ100A-M3/61 suitable for automotive applications?
The SMAJ100A-M3/61 is halogen-free and RoHS-compliant but not AEC-Q101 qualified. It is rated for -55 °C to +150 °C junction temperature and meets MSL Level 1, making it suitable for non-safety-critical automotive subsystems like infotainment or lighting control. For AEC-Q101–required locations (e.g., engine control, ADAS), the SMAJ100AHE3_A/H variant must be used instead of SMAJ100A-M3/61.
How does the M3 suffix differ from E3 in SMAJ100A-M3/61?
The M3 suffix in SMAJ100A-M3/61 denotes halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance, whereas E3 indicates RoHS-compliance without halogen-free assurance. Both share identical electrical specifications and thermal ratings, but M3 satisfies stricter environmental mandates for consumer and industrial OEMs. SMAJ100A-M3/61 is preferred where halogen content restrictions apply in final product certification.
What is the reverse leakage current of SMAJ100A-M3/61 at its rated stand-off voltage?
At its 100 V stand-off voltage (VWM), the SMAJ100A-M3/61 specifies a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor paths and minimizes quiescent power loss in battery-operated systems. Leakage remains below 5 μA up to +125 °C, ensuring stable performance across industrial temperature ranges for SMAJ100A-M3/61.
Can SMAJ100A-M3/61 be used in bidirectional configurations?
No - SMAJ100A-M3/61 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires the CA-suffixed variant (e.g., SMAJ100CA). Using SMAJ100A-M3/61 in reverse-biased AC or symmetrical surge scenarios would result in forward conduction and potential failure. Always verify polarity alignment during PCB layout to ensure correct placement of SMAJ100A-M3/61.
SMAJ100A-M3/61 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMAJ100A-M3/61 FAQ
1.How can I place an order for SMAJ100A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ100A-M3/61 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 SMAJ100A-M3/61 reliable?
The price and inventory of SMAJ100A-M3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ100A-M3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ100A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ100A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ100A-M3/61?
SMAJ100A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ100A-M3/61 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 SMAJ100A-M3/61?
For technical support, including SMAJ100A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ100A-M3/61 requirements.
6.How does Aetrix verify that SMAJ100A-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ100A-M3/61 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 SMAJ100A-M3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ100A-M3/61?
All SMAJ100A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ100A-M3/61, 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 SMAJ100A-M3/61 part is unused and in its original packaging.
Return procedure for SMAJ100A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ100A-M3/61 Tags
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