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Vishay General Semiconductor - Diodes Division SMAJ160A-M3/61
- Part No.:
- SMAJ160A-M3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ160A-M3/61.pdf
- Description:
- TVS DIODE 160VWM 259VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,896
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Product details
Overview
SMAJ160A-M3/61 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 160 V stand-off voltage (VWM), 178–197 V breakdown voltage (VBR) at 1 mA, 259 V maximum clamping voltage (VC) at 1.2 A peak pulse current (IPPM), and 400 W peak pulse power rating with 10/1000 μs waveform - deployed to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD in industrial and automotive systems.
For engineers reviewing the SMAJ160A-M3/61 datasheet, SMAJ160A-M3/61 pinout, SMAJ160A-M3/61 application, or SMAJ160A-M3/61 equivalent, key selection considerations include its unidirectional polarity, SMA (DO-214AC) package compatibility, 1.0 μA max reverse leakage at VWM, 150 °C max junction temperature, and halogen-free RoHS-compliant construction per M3 suffix.
Technical Context
This TVS diode operates as a clamping device that enters avalanche conduction when transient voltage exceeds its breakdown threshold, limiting downstream voltage to ≤259 V at 1.2 A. Its glass-passivated junction ensures stable VBR tolerance and low incremental surge resistance, while the low-profile SMA package supports automated SMT assembly and meets MSL Level 1 reflow requirements (260 °C peak).
The device is rated for non-repetitive 8.3 ms half-sine surge current up to 40 A (IFSM), with thermal resistance of 120 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads. It is not AEC-Q101 qualified (M3 suffix denotes halogen-free commercial grade only; HE3/HM3 required for automotive qualification).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 160 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR min/max | 178 V / 197 V at IT = 1 mA - Confirmed breakdown window ensures reliable turn-on margin above VWM. |
| VC @ IPPM | 259 V at IPPM = 1.2 A - Clamped voltage during 10/1000 μs transient; determines protected circuit's maximum stress level. |
| PPPM | 400 W - Peak pulse power handling capability under standardized 10/1000 μs waveform; derates to 300 W above 78 V. |
| ID @ VWM | ≤1.0 μA - Ultra-low reverse leakage ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature rating enables operation in under-hood automotive and industrial ambient environments. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with cathode band marking; compatible with JEDEC MS-013AC footprint. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; cathode indicated by a band on the body. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or lowest potential node; completes conduction path during reverse-biased transient clamping. |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., power rail or signal trace); receives surge energy and initiates avalanche breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 μs) | Enables suppression of high-energy transients from relay coils, solenoids, and motor drivers without degradation. |
| Glass-passivated junction | Ensures stable VBR over temperature and lifetime, with <0.1 %/°C drift and resistance to humidity-induced parameter shift. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow processing at 260 °C peak without baking or special handling. |
| Halogen-free & RoHS-compliant (M3) | Meets IEC 61249-2-21 and JEDEC J-STD-020 standards for environmentally constrained industrial and consumer applications. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns response), improving protection margin for sensitive ICs. |
Applications
| Industrial Motor Drives | Automotive Power Distribution |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontrollers against back-EMF spikes from brushed DC motors and solenoid valves. IC Role / Device Role / Timing Role: Unidirectional TVS placed between high-side switch output and ground to clamp inductive kickback. Use Value: Limits transient voltage to ≤259 V, preventing latch-up or oxide rupture in 3.3 V/5 V logic interfaces driving MOSFET gates. |
Use Scenario: Input line protection for body control modules (BCMs) and lighting controllers exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply rail upstream of LDO regulators and CAN transceivers. Use Value: Withstands 160 V continuous system voltage and clamps 100 V/100 ms load dump transients below IC absolute maximum ratings. |
| Telecom Power Supplies | Industrial Sensor Interfaces |
|
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters and PoE-powered equipment. IC Role / Device Role / Timing Role: Unidirectional clamp on +48 V or +24 V output rails to protect DC-DC converters and interface ICs. Use Value: 1.0 μA leakage preserves efficiency in low-power standby modes; 400 W rating handles sustained surges from rectifier ringing. |
Use Scenario: Signal line protection for analog sensor outputs (e.g., pressure, temperature) connected to ADC inputs. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended sensor traces to suppress ESD and cable discharge events. Use Value: Sub-μA leakage avoids offset errors; fast response preserves signal fidelity in 100 kSPS+ data acquisition systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ160A-E3/61 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3). | No difference in protection performance; used where halogen-free requirement is not mandated. | Select E3 for cost-sensitive commercial designs without halogen restrictions. |
| SMAJ170A-M3/61 | Higher VWM (170 V), VBR (189–209 V), and VC (275 V); same package and power rating. | Better suited for 16 V nominal systems or higher-voltage industrial buses where 160 V margin is insufficient. | Choose SMAJ170A-M3/61 if system operating voltage exceeds 155 V or requires wider clamping margin. |
Compared with SMAJ160A-M3/61, the E3 variant offers identical protection performance at lower material cost but lacks halogen-free compliance, while SMAJ170A-M3/61 provides higher standoff and clamping thresholds - making it suitable for elevated bus voltages but reducing margin for 160 V nominal systems.
Availability
SMAJ160A-M3/61 is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution modules, and telecom power supplies requiring stable component supply, halogen-free compliance, and repeatable TVS performance across production batches.
Supply support for SMAJ160A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMAJ series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh environments - targeting industrial automation, transportation, and infrastructure applications where robustness and consistency are critical.
FAQ
What is the maximum clamping voltage of the SMAJ160A-M3/61 under a 10/1000 μs transient?
The SMAJ160A-M3/61 has a maximum clamping voltage (VC) of 259 V when subjected to its rated peak pulse current of 1.2 A with a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance is guaranteed across the full operating temperature range and remains stable due to the device's glass-passivated junction structure.
Is the SMAJ160A-M3/61 AEC-Q101 qualified?
No, the SMAJ160A-M3/61 is not AEC-Q101 qualified. The "M3" suffix indicates halogen-free, RoHS-compliant commercial-grade construction. For automotive-qualified versions, Vishay offers the SMAJ160AHM3_X series (e.g., SMAJ160AHM3_A), which carry the HM3 suffix and explicit AEC-Q101 qualification per the datasheet ordering table.
What does the "/61" in SMAJ160A-M3/61 signify?
The "/61" in SMAJ160A-M3/61 denotes the preferred packaging code: 7-inch diameter plastic tape and reel containing 1800 units. This format is optimized for high-speed SMT placement equipment and aligns with JEDEC standard carrier dimensions. Alternate codes include /5A (13-inch reel, 7500 units) and /H or /I for automotive-grade tape-and-reel variants.
Can SMAJ160A-M3/61 be used in bidirectional applications?
No, SMAJ160A-M3/61 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires the "CA" suffix (e.g., SMAJ160CA). Using SMAJ160A-M3/61 in reverse-biased configurations outside its specified polarity risks permanent damage or failure to clamp in the forward direction.
What is the thermal resistance of SMAJ160A-M3/61, and how does it affect layout design?
The SMAJ160A-M3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. To maintain safe junction temperatures under repetitive surge conditions, PCB layout must provide adequate copper area and avoid excessive trace length or narrow connections. Derating curves in Figure 2 of the datasheet guide power handling versus ambient temperature.
SMAJ160A-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):
- 160V
- Voltage - Breakdown (Min):
- 178V
- Voltage - Clamping (Max) @ Ipp:
- 259V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- 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)
SMAJ160A-M3/61 FAQ
1.How can I place an order for SMAJ160A-M3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ160A-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 SMAJ160A-M3/61 reliable?
The price and inventory of SMAJ160A-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 SMAJ160A-M3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ160A-M3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ160A-M3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ160A-M3/61?
SMAJ160A-M3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ160A-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 SMAJ160A-M3/61?
For technical support, including SMAJ160A-M3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ160A-M3/61 requirements.
6.How does Aetrix verify that SMAJ160A-M3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ160A-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 SMAJ160A-M3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ160A-M3/61?
All SMAJ160A-M3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ160A-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 SMAJ160A-M3/61 part is unused and in its original packaging.
Return procedure for SMAJ160A-M3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ160A-M3/61 Tags
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