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Vishay General Semiconductor - Diodes Division SMAJ9.0A-M3/61
- Part No.:
- SMAJ9.0A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ9.0A-M3/61.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,976
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Product details
Overview
SMAJ9.0A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection of sensitive ICs, MOSFETs, and signal lines in power rails and data interfaces. It features a 9.0 V standoff voltage (VWM), 10.0–11.1 V breakdown voltage (VBR) at 1 mA, 15.4 V clamping voltage (VC) at 26.0 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SMAJ9.0A-M3/61 datasheet, SMAJ9.0A-M3/61 pinout, SMAJ9.0A-M3/61 application, or SMAJ9.0A-M3/61 equivalent, this device is selected for robust ESD and surge immunity in automotive sensor interfaces, industrial I/O protection, and DC power rail clamping where low-leakage (<5.0 μA at VWM), fast response (<1 ns), and AEC-Q101-qualified reliability are required.
Technical Context
The SMAJ9.0A-M3/61 operates as a silicon avalanche diode with unidirectional polarity-cathode marked by a band-and functions by clamping transient overvoltages above its breakdown threshold while maintaining low leakage below 9.0 V. Its junction-to-lead thermal resistance (RθJL = 30 °C/W) and MSL Level 1 rating support reflow compatibility and stable operation up to 150 °C junction temperature.
It delivers 26.0 A peak pulse current under standardized 10/1000 μs surge conditions, with clamping performance validated at 15.4 V, enabling effective protection of 12 V nominal systems against ISO 7637-2 Pulse 1/2a/5a transients and IEC 61000-4-5 surges when mounted on 5.0 mm × 5.0 mm copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC working limit for 12 V rail protection. |
| VBR (min/max) | 10.0 V / 11.1 V at 1.0 mA - Verified avalanche onset range; ensures predictable turn-on margin above VWM for reliable clamping initiation. |
| VC @ IPPM | 15.4 V at 26.0 A - Clamped voltage during 10/1000 μs surge; limits downstream stress to ≤15.4 V under worst-case 400 W transient. |
| ID @ VWM | ≤5.0 μA - Ultra-low reverse leakage at rated standoff; preserves signal integrity and minimizes standby power loss in battery-powered sensors. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 μs waveform; meets industrial surge immunity requirements per IEC 61000-4-5 Level 3 (1 kV line-to-ground). |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.28 mm × 4.50 mm footprint and 2.29 mm height; 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 rated, MSL Level 1 (260 °C peak reflow). Polarity: cathode indicated by black band on one end; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected circuit's power rail or signal line; conducts surge current to ground during overvoltage events. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop and establishes reference for breakdown behavior. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Enables single-device protection against severe transients like load dump (ISO 7637-2 Pulse 5a) without external series impedance. |
| Low clamping ratio (VC/VBR ≈ 1.40) | Minimizes overvoltage overshoot during clamping-critical for safeguarding 3.3 V or 5 V logic interfaces downstream of 12 V supply rails. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile usage without baking, reducing manufacturing complexity and cost. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets global environmental compliance mandates including JEDEC J-STD-020 and EU RoHS Directive 2011/65/EU. |
| AEC-Q101 qualification option | Available in HM3 variant for automotive applications requiring validated reliability across temperature cycling, HTRB, and ESD testing. |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching noise in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Primary clamping element placed between sensor signal line and chassis ground, responding within <1 ns to suppress transients exceeding 12 V. Use Value: Limits voltage seen by downstream op-amps or ADCs to ≤15.4 V, preventing latch-up or permanent damage during ISO 7637-2 Pulse 1/2a events. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and motor drive coupling in factory automation cabinets. IC Role / Device Role / Timing Role: Unidirectional TVS connected across 24 V DC input terminals, conducting surge energy to common ground during 1 kV/0.5 Ω IEC 61000-4-5 surges. Use Value: Maintains functional integrity of optocoupler input stages by clamping transients before they exceed 24 V rail tolerance, eliminating false triggering or component failure. |
| DC Power Rail Clamp | Consumer USB Port ESD Protection |
Use Scenario: Secondary overvoltage protection on 12 V DC input rails of embedded gateways and PoE-powered devices subject to hot-swap and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of DC-DC converters and LDOs, activated only during abnormal overvoltage conditions. Use Value: Prevents catastrophic failure of downstream regulators by limiting input voltage excursion to 15.4 V during 400 W surge events, preserving system uptime. | Use Scenario: Low-capacitance ESD clamp on VBUS and D+/D− lines of USB 2.0 ports in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: Fast-acting unidirectional suppressor shunting ESD strikes (>8 kV contact) to ground while exhibiting <5 μA leakage at 5 V nominal. Use Value: Ensures USB enumeration reliability and prevents interface lockup without degrading 480 Mbps signal integrity due to minimal junction capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A-E3/61 | Same electrical specs; RoHS-compliant but not halogen-free; uses standard tin plating without whisker mitigation class 2. | Approved for commercial-grade industrial use; not qualified for automotive under AEC-Q101. | Select when halogen-free requirement is not mandated and cost optimization is prioritized over automotive qualification. |
| SMAJ9.0AHE3_A/H | Identical electrical parameters; includes AEC-Q101 qualification and RoHS compliance; packaged in 7" tape (H code) with halogen-free M3-equivalent construction. | Validated for automotive ECUs, ADAS sensors, and infotainment head units requiring long-term reliability under thermal cycling and vibration. | Choose for automotive production programs needing documented qualification evidence and traceable lot-level test reports. |
Compared with SMAJ9.0A-M3/61, the E3 variant offers identical clamping performance at lower material cost but lacks halogen-free certification, while the HE3_A/H provides full AEC-Q101 validation-making it suitable for safety-critical vehicle subsystems where the M3 version serves general-purpose industrial and consumer applications.
Availability
SMAJ9.0A-M3/61 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and DC power rail clamping requiring stable component supply, consistent lead-time visibility, and full traceability from wafer lot to shipment.
Supply support for SMAJ9.0A-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 high-reliability, high-efficiency, and application-specific performance.
The SMAJ series is engineered for robust transient suppression in harsh electromagnetic environments-including automotive, industrial, and telecom infrastructure-where fast response, precise clamping, and long-term stability are non-negotiable.
FAQ
What is the maximum clamping voltage of the SMAJ9.0A-M3/61 under a 10/1000 μs surge?
The SMAJ9.0A-M3/61 has a maximum clamping voltage (VC) of 15.4 V when subjected to its rated peak pulse current of 26.0 A using the standardized 10/1000 μs waveform. This value is measured at TJ = 25 °C with devices mounted on 5.0 mm × 5.0 mm copper pads per terminal, ensuring repeatable performance in real-world PCB layouts. The SMAJ9.0A-M3/61 maintains this clamping level across its operational temperature range, making it suitable for protecting 12 V systems against ISO 7637-2 transients.
Is the SMAJ9.0A-M3/61 halogen-free and RoHS-compliant?
Yes, the SMAJ9.0A-M3/61 is both halogen-free and RoHS-compliant, as confirmed by Vishay's ordering nomenclature: the "M3" suffix explicitly denotes halogen-free, RoHS-compliant commercial-grade construction. It meets JEDEC J-STD-020 MSL Level 1 and passes JESD 201 Class 2 whisker testing. The SMAJ9.0A-M3/61 is certified per Vishay document 99912 for material compliance, and no brominated or chlorinated flame retardants are used in its molding compound.
Does the SMAJ9.0A-M3/61 have AEC-Q101 qualification?
No, the SMAJ9.0A-M3/61 itself is not AEC-Q101 qualified; it is a commercial-grade part. However, Vishay offers the functionally identical SMAJ9.0AHE3_A/H and SMAJ9.0AHM3_A/H variants that carry full AEC-Q101 qualification for automotive applications. The SMAJ9.0A-M3/61 shares all electrical and mechanical specifications with those qualified versions-only the reliability test documentation and packaging traceability differ. For automotive production, specify the HM3 or HE3 suffix variants instead of SMAJ9.0A-M3/61.
What is the reverse leakage current of the SMAJ9.0A-M3/61 at its standoff voltage?
The SMAJ9.0A-M3/61 exhibits a maximum reverse leakage current (ID) of 5.0 μA at its rated standoff voltage (VWM) of 9.0 V and ambient temperature of 25 °C. This ultra-low leakage ensures minimal power drain in always-on circuits such as automotive body control modules or battery-backed IoT sensors. Leakage remains below 10 μA up to +85 °C, supporting reliable operation in extended temperature environments without compromising system efficiency.
How does the SMAJ9.0A-M3/61 compare to SMAJ8.5A and SMAJ10A in terms of clamping performance?
The SMAJ9.0A-M3/61 offers tighter clamping than SMAJ10A (VC = 17.0 V at 23.5 A) and lower standoff than SMAJ8.5A (VWM = 8.5 V, VC = 14.4 V at 27.8 A), positioning it optimally for 12 V nominal systems where margin above VWM must balance surge headroom and clamping tightness. Its 15.4 V VC provides 1.6 V margin below typical 17 V absolute maximum ratings of many 12 V-compatible ICs. The SMAJ9.0A-M3/61 thus delivers superior protection specificity compared to adjacent variants-neither over-clamping nor under-protecting critical nodes.
SMAJ9.0A-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):
- 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-M3/61 FAQ
1.How can I place an order for SMAJ9.0A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ9.0A-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 SMAJ9.0A-M3/61 reliable?
The price and inventory of SMAJ9.0A-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 SMAJ9.0A-M3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ9.0A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ9.0A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ9.0A-M3/61?
SMAJ9.0A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ9.0A-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 SMAJ9.0A-M3/61?
For technical support, including SMAJ9.0A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ9.0A-M3/61 requirements.
6.How does Aetrix verify that SMAJ9.0A-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ9.0A-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 SMAJ9.0A-M3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ9.0A-M3/61?
All SMAJ9.0A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ9.0A-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 SMAJ9.0A-M3/61 part is unused and in its original packaging.
Return procedure for SMAJ9.0A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ9.0A-M3/61 Tags
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