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Vishay General Semiconductor - Diodes Division SMAJ9.0C-E3/61
- Part No.:
- SMAJ9.0C-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ9.0C-E3/61.pdf
- Description:
- TVS DIODE 9VWM 16.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,204
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Product details
Overview
SMAJ9.0C-E3/61 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on signal and power lines. It features a 9.0 V stand-off voltage (VWM), 16.9 V maximum clamping voltage (VC) at 5.0 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMAJ9.0C-E3/61 datasheet, SMAJ9.0C-E3/61 pinout, SMAJ9.0C-E3/61 application, or SMAJ9.0C-E3/61 equivalent, key selection criteria include bi-directional surge capability, low clamping ratio (VC/VWM = 1.88), RoHS-compliant matte tin terminals, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 0.2 × 0.2" copper pads.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 10.0 V and 12.2 V at 1.0 mA test current. Its clamping behavior is characterized under standardized 10/1000 µs surge conditions, delivering consistent protection without polarity dependence.
Thermal performance is defined by junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W. The device sustains operation across –55 °C to +150 °C junction temperature range and exhibits <1.0 µA reverse leakage at VWM, ensuring minimal standby power impact.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe signal line operating margin. |
| VC @ IPPM | 16.9 V at 5.0 A - Clamped voltage during 10/1000 µs surge; limits downstream component stress to ≤16.9 V. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 µs waveform; supports robust ESD and lightning surge immunity. |
| IPPM | 5.0 A - Peak surge current capacity at rated clamping voltage; validated with 0.2 × 0.2" copper pad layout. |
| VBR min/max | 10.0 V / 12.2 V at 1.0 mA - Ensures reliable turn-on within narrow tolerance band for predictable protection threshold. |
| Leakage ID | ≤1.0 µA at VWM - Negligible standby current draw; avoids signal integrity degradation in high-impedance circuits. |
| TJ range | –55 °C to +150 °C - Enables deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, bi-directional configuration with no polarity marking - symmetrical terminal design allows orientation-agnostic PCB placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge path | Either terminal serves as input/output; no cathode band - enables flexible routing without orientation constraints. |
| Cathode Band (absent) | Polarity indicator | Not present on bi-directional variants like SMAJ9.0C-E3/61; confirms dual-quadrant conduction capability. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional suppression | Clamps positive and negative transients equally - eliminates need for dual-device solutions on AC-coupled or floating lines. |
| Glass passivated junction | Enhances long-term reliability and surge endurance versus epoxy-passivated alternatives; resists humidity-induced degradation. |
| MSL Level 1 rating | Compatible with standard reflow profiles up to 260 °C peak; no bake-out required prior to assembly. |
| RoHS-compliant matte tin leads | Meets J-STD-002 and JESD22-B102 solderability standards; passes JESD201 Class 1A whisker testing. |
| Low clamping ratio | VC/VWM = 1.88 - Minimizes overvoltage exposure during surge events compared to higher-ratio TVS devices. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching spikes in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed directly at connector entry point to shunt surge energy before reaching precision front-end circuitry. Use Value: Limits transient voltage to ≤16.9 V during 5.0 A surges, preserving ADC reference stability and preventing op-amp saturation or latch-up in signal conditioning stages. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers exposed to field wiring transients and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage protector on differential analog input traces, operating in parallel with input filtering and isolation barriers. Use Value: Maintains signal fidelity by clamping fast-rising transients (<1 ns rise time) while contributing <1.0 µA leakage - avoiding zero-point drift in high-resolution measurement channels. |
| Telecom Line Card Surge Protection | Consumer Power Adapter ESD Shielding |
Use Scenario: Secondary-level protection on Ethernet PHY interface lines and auxiliary power rails in base station remote radio units subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-response TVS deployed after primary gas discharge tube (GDT) to handle residual energy and high-frequency components of multi-kA surges. Use Value: Delivers 400 W peak pulse power dissipation with 10/1000 µs waveform compliance - bridges gap between coarse GDT protection and sensitive PHY IC withstand limits. |
Use Scenario: ESD and surge suppression on USB-C and barrel jack input paths in wall-mounted AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: First-line defense against human-body-model (HBM) and IEC 61000-4-2 contact discharges entering via unshielded input connectors. Use Value: Responds in <1 ps to clamp 8 kV ESD events to ≤16.9 V, preventing gate oxide damage in synchronous rectifier MOSFETs and controller ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0CA-E3/61 | Identical electrical specs and packaging; CA suffix denotes same bi-directional construction per Vishay documentation. | No functional difference - CA and C suffixes are interchangeable per Vishay's ordering note and device marking table. | Select SMAJ9.0CA-E3/61 only if legacy BOM references CA; otherwise SMAJ9.0C-E3/61 is functionally identical and fully substitutable. |
| SMBJ9.0C-E3/52 | Same VWM (9.0 V) and VC (16.9 V), but SMB package (DO-214AA) offers 600 W PPPM vs. 400 W and higher IPPM (7.5 A). | Better suited for higher-energy surge environments (e.g., outdoor telecom, solar inverters); larger footprint requires PCB redesign. | Choose SMBJ9.0C-E3/52 when surge threat level exceeds 400 W; avoid for space-constrained designs where SMA footprint is mandatory. |
Compared with SMAJ9.0C-E3/61, SMAJ9.0CA-E3/61 offers no technical distinction and is a direct form-fit-function match, whereas SMBJ9.0C-E3/52 provides higher surge capacity at the cost of larger board area - making SMAJ9.0C-E3/61 optimal for cost-sensitive, space-limited 12 V system protection where 400 W rating suffices.
Availability
SMAJ9.0C-E3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line cards, and consumer power adapter designs requiring stable component supply and RoHS-compliant surge protection.
Supply support for SMAJ9.0C-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The SMAJ series is engineered specifically for surface-mount transient voltage suppression in harsh environments, emphasizing low clamping ratio, repeatable surge endurance, and compatibility with high-volume automated assembly processes.
FAQ
What is the clamping voltage of SMAJ9.0C-E3/61 under maximum rated surge current?
The SMAJ9.0C-E3/61 clamps to a maximum of 16.9 V when subjected to its rated 5.0 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured with the device mounted on 0.2 × 0.2" copper pads per Vishay Document 88390, and represents the upper limit of voltage seen by protected circuitry during surge events.
Is SMAJ9.0C-E3/61 unidirectional or bidirectional, and how is polarity indicated?
SMAJ9.0C-E3/61 is a bi-directional TVS diode, meaning it provides symmetrical clamping for both positive and negative transients. Unlike uni-directional variants, it has no cathode band marking - the absence of polarity identification confirms its bi-directional functionality per Vishay's mechanical data and device marking table.
What is the maximum operating temperature range for SMAJ9.0C-E3/61?
The SMAJ9.0C-E3/61 is rated for an operating junction and storage temperature range of –55 °C to +150 °C. This wide thermal envelope supports use in under-hood automotive modules, industrial motor controls, and outdoor telecom infrastructure where ambient temperatures exceed 105 °C.
Does SMAJ9.0C-E3/61 meet RoHS and lead-free soldering requirements?
Yes, SMAJ9.0C-E3/61 is RoHS-compliant (2002/95/EC) and WEEE-compliant (2002/96/EC), with matte tin-plated leads that satisfy J-STD-002 and JESD22-B102 solderability standards. It also passes JESD201 Class 1A whisker testing and supports lead-free reflow up to 260 °C for 40 seconds.
How does the 400 W peak pulse power rating of SMAJ9.0C-E3/61 relate to real-world surge protection?
The 400 W rating for SMAJ9.0C-E3/61 applies to non-repetitive 10/1000 µs waveform surges, representing typical lightning-induced or inductive-switching transients. In practice, this enables reliable protection of downstream ICs rated for ≤16.9 V transient exposure - provided the PCB layout uses minimum recommended 0.2 × 0.2" copper pads per Vishay's thermal derating guidelines.
SMAJ9.0C-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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 16.9V
- Current - Peak Pulse (10/1000µs):
- 23.7A
- 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)
SMAJ9.0C-E3/61 FAQ
1.How can I place an order for SMAJ9.0C-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ9.0C-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 SMAJ9.0C-E3/61 reliable?
The price and inventory of SMAJ9.0C-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 SMAJ9.0C-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ9.0C-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ9.0C-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ9.0C-E3/61?
SMAJ9.0C-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ9.0C-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 SMAJ9.0C-E3/61?
For technical support, including SMAJ9.0C-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ9.0C-E3/61 requirements.
6.How does Aetrix verify that SMAJ9.0C-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ9.0C-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 SMAJ9.0C-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ9.0C-E3/61?
All SMAJ9.0C-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ9.0C-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 SMAJ9.0C-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ9.0C-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ9.0C-E3/61 Tags
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