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Vishay General Semiconductor - Diodes Division SMAJ9.0A-E3/61
- Part No.:
- SMAJ9.0A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ9.0A-E3/61.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,230
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Product details
Overview
SMAJ9.0A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection of sensitive electronics. It features a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA, and clamps transients to ≤15.4 V at 26.0 A peak pulse current (IPPM) under 10/1000 μs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMAJ9.0A-E3/61 datasheet, SMAJ9.0A-E3/61 pinout, SMAJ9.0A-E3/61 application, or SMAJ9.0A-E3/61 equivalent, key selection criteria include its 400 W peak pulse power rating (≤78 V), low 0.074 %/°C VBR temperature coefficient, RoHS-compliant SMA (DO-214AC) package with cathode band marking, and AEC-Q101 qualification eligibility via HE3 suffix variants.
Technical Context
This TVS diode operates as a clamping device in parallel with protected circuitry, entering avalanche conduction when reverse voltage exceeds VBR to divert surge energy away from downstream components. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the low incremental surge resistance minimizes clamping voltage overshoot during high-di/dt events.
The SMAJ9.0A-E3/61 is rated for non-repetitive 400 W peak pulse power (10/1000 μs), derated linearly above 25 °C ambient per Fig. 2, and supports 40 A single half-sine surge (8.3 ms) in forward direction. Thermal resistance is 120 °C/W junction-to-ambient (RθJA) on standard 0.2" × 0.2" copper pads, enabling reliable operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 9.0 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 10.0–11.1 V at IT = 1.0 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | ≤15.4 V at IPPM = 26.0 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines maximum stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capacity under standardized 10/1000 μs waveform; validates protection against IEC 61000-4-5 Level 4 surges. |
| ID (Reverse Leakage) | ≤5.0 μA at VWM - Low off-state current minimizes standby power loss and avoids false triggering in high-impedance circuits. |
| TJ max. | 150 °C - Maximum junction temperature; enables use in under-hood automotive and industrial environments with elevated ambient temps. |
| Package | SMA (DO-214AC) - Surface-mount outline with 0.208" × 0.157" footprint; compatible with automated pick-and-place and reflow soldering per J-STD-020 MSL level 1. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on unidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side (e.g., GND or return path); defines directionality in unidirectional configuration. |
| Cathode | Avalanche conduction terminal / Clamping node | Marked with band; connected to protected line (e.g., 9 V rail or CAN_H); conducts surge current to ground during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Validates compliance with IEC 61000-4-5 surge immunity requirements for industrial and automotive applications. |
| Low clamping voltage (VC ≤ 15.4 V) | Ensures protected 9 V logic or analog circuits remain within absolute maximum ratings during 26 A transient events. |
| Glass passivated junction | Provides stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress. |
| MSL level 1 moisture sensitivity | Enables direct placement without baking; supports standard SMT reflow profiles up to 260 °C peak. |
| RoHS-compliant, commercial-grade (E3 suffix) | Meets environmental compliance for global commercial electronics; halogen-free option available via M3 suffix. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protects microcontroller GPIO and LIN bus transceivers from load dump and inductive switching spikes in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between LIN line and chassis ground, conducting only during negative transients. Use Value: Limits voltage to ≤15.4 V during 26 A surges, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Shields 24 V digital input optocoupler circuits from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS on input line upstream of series resistor and opto-LED, absorbing energy before current-limiting stage. Use Value: Withstands 400 W pulses without degradation, maintaining >9.0 V DC operating margin while clamping <15.4 V. |
| Consumer Appliance Motor Driver Board | Telecom Power Supply EMI Filter Stage |
|
Use Scenario: Guards H-bridge gate drivers and MCU reset lines against back-EMF from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Localized TVS on motor supply rail and reset trace, responding in <1 ns to fast-rising inductive spikes. Use Value: Fast response and low VC prevent false resets or shoot-through in MOSFET drivers during commutation events. |
Use Scenario: Installed across secondary-side DC output of AC/DC adapters to suppress differential-mode surges coupled through Y-capacitors. IC Role / Device Role / Timing Role: Secondary-side clamping device on regulated 5 V/12 V outputs, complementing primary-side MOVs and common-mode chokes. Use Value: 5.0 μA max leakage at 9.0 V avoids loading regulation feedback networks; 150 °C TJ rating sustains performance in enclosed power modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A-M3/61 | Halogen-free, RoHS-compliant variant; identical electrical specs and package; same thermal and surge ratings. | No functional difference; selected where halogen-free materials are mandated by OEM or regional environmental policy. | Choose SMAJ9.0A-M3/61 when compliance with JEDEC J-STD-020 MSL level 1 and halogen-free standards is required. |
| SMAJ9.0AHE3_A/H | AEC-Q101 qualified version; same VWM/VBR/VC/PPPM, but validated for automotive-grade reliability (HTOL, TC, UHAST). | Required for under-hood or safety-critical automotive modules; not necessary for commercial/industrial use. | Specify SMAJ9.0AHE3_A/H only for automotive production programs requiring AEC-Q101 certification evidence. |
Compared with SMAJ9.0A-M3/61 and SMAJ9.0AHE3_A/H, the SMAJ9.0A-E3/61 offers baseline commercial-grade performance with RoHS compliance - optimal for cost-sensitive industrial and consumer designs where halogen-free or automotive qualification are not mandated.
Availability
SMAJ9.0A-E3/61 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, consumer appliance motor control boards, and telecom power supply filtering requiring stable component supply and consistent surge protection performance.
Supply support for SMAJ9.0A-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, efficiency, and application-specific optimization.
The SMAJ series delivers standardized surface-mount TVS solutions for board-level transient suppression, engineered for rapid response, precise clamping, and compatibility with high-volume automated assembly in automotive, industrial, and computing systems.
FAQ
What is the maximum clamping voltage of the SMAJ9.0A-E3/61 under a 10/1000 μs surge?
The SMAJ9.0A-E3/61 has a maximum clamping voltage (VC) of 15.4 V at 26.0 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for downstream 9 V-rated circuitry. The SMAJ9.0A-E3/61 maintains this clamping performance across its specified operating temperature range.
Is the SMAJ9.0A-E3/61 suitable for automotive applications?
The SMAJ9.0A-E3/61 itself is a commercial-grade, RoHS-compliant part and not AEC-Q101 qualified. However, it shares identical electrical and mechanical specifications with the AEC-Q101-qualified variant SMAJ9.0AHE3_A/H. For non-safety-critical automotive subsystems (e.g., infotainment power rails), the SMAJ9.0A-E3/61 may be used subject to system-level validation - but full automotive qualification requires the HE3-suffixed version. The SMAJ9.0A-E3/61 remains widely deployed in industrial and consumer applications where AEC-Q101 is not mandated.
What does the "-E3/61" suffix indicate in SMAJ9.0A-E3/61?
The "-E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 and JESD 22-B102 solderability standards. The "/61" indicates packaging in 7-inch diameter plastic tape and reel, with a base quantity of 1800 units per reel - optimized for high-speed SMT placement. This ordering code distinguishes it from M3 (halogen-free), HE3 (AEC-Q101), and HM3 variants, all sharing the same SMA (DO-214AC) package and core electrical specs. The SMAJ9.0A-E3/61 is fully compatible with standard reflow profiles per J-STD-020 MSL level 1.
How does the SMAJ9.0A-E3/61 compare to SMAJ8.5A and SMAJ10A in terms of stand-off voltage?
The SMAJ9.0A-E3/61 has a stand-off voltage (VWM) of 9.0 V, positioned between SMAJ8.5A (VWM = 8.5 V) and SMAJ10A (VWM = 10 V). Its 9.0 V rating provides tighter margin for 9 V nominal systems - avoiding premature conduction while maintaining headroom below the 10.0–11.1 V breakdown range. Unlike SMAJ8.5A (14.4 V VC) or SMAJ10A (17.0 V VC), the SMAJ9.0A-E3/61 achieves 15.4 V clamping, offering superior protection for 9 V logic without excessive voltage overhead. All three share identical 400 W PPPM and SMA package.
Can the SMAJ9.0A-E3/61 be used in bidirectional configurations?
No - the SMAJ9.0A-E3/61 is a unidirectional TVS diode, identified by its "A" suffix and cathode band marking. Bidirectional operation requires the "CA" suffix (e.g., SMAJ9.0CA), which lacks polarity marking and exhibits symmetrical breakdown in both directions. Using SMAJ9.0A-E3/61 in reverse-biased mode beyond its 9.0 V stand-off will cause conduction and potential failure. For AC-coupled or differential signal protection, select SMAJ9.0CA or other explicitly bidirectional variants. The SMAJ9.0A-E3/61 must be oriented with cathode toward the protected line.
SMAJ9.0A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 26A
- Power - Peak Pulse:
- 400W
- 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)
SMAJ9.0A-E3/61 FAQ
1.How can I place an order for SMAJ9.0A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ9.0A-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 SMAJ9.0A-E3/61 reliable?
The price and inventory of SMAJ9.0A-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 SMAJ9.0A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ9.0A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ9.0A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ9.0A-E3/61?
SMAJ9.0A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ9.0A-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 SMAJ9.0A-E3/61?
For technical support, including SMAJ9.0A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ9.0A-E3/61 requirements.
6.How does Aetrix verify that SMAJ9.0A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ9.0A-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 SMAJ9.0A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ9.0A-E3/61?
All SMAJ9.0A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ9.0A-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 SMAJ9.0A-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ9.0A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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