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Vishay General Semiconductor - Diodes Division P4SMA120A-E3/61
- Part No.:
- P4SMA120A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA120A-E3/61.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,537
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Product details
Overview
P4SMA120A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 120 V breakdown voltage (VBR = 114–126 V at IT = 1.0 mA), 165 V maximum clamping voltage (VC) at 1.8 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform). It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning surges in industrial and telecom power rails.
For engineers reviewing the P4SMA120A-E3/61 datasheet, P4SMA120A-E3/61 pinout, P4SMA120A-E3/61 application, or P4SMA120A-E3/61 equivalent, this device delivers verified clamping performance, AEC-Q101 qualification readiness (via HE3 suffix variants), RoHS-compliant matte tin terminations, and MSL Level 1 moisture sensitivity - critical for automotive-grade board-level surge protection design and high-reliability reflow assembly.
Technical Context
The P4SMA120A-E3/61 operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging glass-passivated junction technology for stable reverse breakdown and low incremental surge resistance. Its 120 V nominal VBR ensures precise overvoltage thresholding above 100 V DC bus rails while maintaining 102 V stand-off voltage (VWM) to avoid false triggering during normal operation.
Designed for transient suppression on power and signal lines, it exhibits 1.8 A IPPM under 10/1000 µs waveform, 165 V clamping at that current, and 0.107 %/°C temperature coefficient of VBR. Thermal resistance is RθJA = 120 °C/W (typ.) and RθJL = 30 °C/W (typ.), supporting reliable operation up to TJ = +150 °C with standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 114 V / 126 V at IT = 1.0 mA - defines precise avalanche onset window for repeatable overvoltage protection |
| VWM | 102 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 165 V at 1.8 A - clamped voltage limiting downstream component stress during surge events |
| PPPM | 400 W (10/1000 µs) - peak transient energy absorption capability per industry-standard waveform |
| IPPM | 1.8 A - maximum non-repetitive surge current the device safely clamps without failure |
| TJ max. | +150 °C - junction temperature limit enabling use in high-ambient industrial environments |
| Package | SMA (DO-214AC) - surface-mount outline with 5.28 mm × 4.50 mm footprint, MSL Level 1, J-STD-002 solderable |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, cathode indicated by band marking; terminals are anode and cathode - no internal circuitry or multi-pin configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected line ground or low-side reference | Provides low forward voltage drop (<3.5 V at 25 A) during surge conduction path |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line positive or high-side rail | Defines unidirectional clamping direction - conducts only when cathode voltage exceeds anode by ≥VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 400 W peak pulse power (10/1000 µs) | Supports robust protection of 24–48 V industrial control inputs and telecom power interfaces against IEC 61000-4-5 surges |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow assembly without preconditioning or baking delays |
| AEC-Q101 qualified variants available | HE3/HM3 suffix versions meet automotive-grade stress testing requirements for engine control and ADAS power domains |
| UL 497B recognized (QVGQ2) | Validates suitability for primary-side telecom and data line surge protection per safety standards |
Applications
| Industrial Motor Drive Power Rails | Telecom DC Power Input Protection |
|---|---|
|
Use Scenario: Suppresses voltage spikes induced by contactor switching and regenerative braking in 100–120 V DC motor drive power supplies. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input bulk capacitor to clamp transients before they reach DC-DC converters and gate drivers. Use Value: Limits transient overshoot to ≤165 V, preventing damage to 200 V-rated MOSFETs and reducing need for oversized input capacitors. |
Use Scenario: Protects -48 V telecom rectifier outputs and distribution boards from lightning-induced surges on central office power feeds. IC Role / Device Role / Timing Role: Standoff-clamp TVS installed between output rail and chassis ground to divert common-mode surges per ITU-T K.20/K.21. Use Value: Withstands 400 W pulses while maintaining <1 µA leakage at -48 V, ensuring minimal standby power loss and system uptime. |
| Automotive Body Control Module (BCM) Inputs | Industrial Sensor Signal Line Protection |
|
Use Scenario: Shields BCM microcontroller GPIOs and LIN bus transceivers from load dump and jump-start transients on 12 V auxiliary rails. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at connector entry point to absorb >100 V, 100 ms load dump events per ISO 7637-2 Pulse 5a. Use Value: Clamps to 165 V within nanoseconds, preserving signal integrity and eliminating need for additional series impedance or filtering. |
Use Scenario: Guards analog outputs of pressure/temperature sensors in factory automation against ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at sensor connector to shunt fast transients before reaching ADC front-end. Use Value: Delivers sub-100 ns response with 165 V clamping, preventing ADC saturation and measurement corruption in 4–20 mA loop interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120A | Same VBR range (114–126 V), identical SMA package, but lower PPPM = 400 W (same rating) and higher VC = 175 V at 1.7 A | Marginally higher clamping voltage reduces protection margin for 150 V-rated downstream components | Select when legacy SMAJ footprint compatibility is required and 10 V higher clamping is acceptable |
| 1.5SMC120A | Higher power rating (1500 W), DO-214AB package (larger footprint), VC = 165 V at 5.2 A, same VBR range | Requires PCB layout change; suited for higher-energy surge environments (e.g., outdoor telecom cabinets) | Choose for applications demanding >400 W surge handling where board space allows larger SMC package |
Compared with SMAJ120A and 1.5SMC120A, the P4SMA120A-E3/61 offers optimal balance of compact SMA footprint, 165 V clamping precision, and RoHS-compliant matte tin terminations - making it preferred for space-constrained industrial and automotive modules requiring MSL Level 1 assembly and UL recognition.
Availability
P4SMA120A-E3/61 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power inputs, automotive body control modules, and sensor interface protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA120A-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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and application-specific performance.
The P4SMA120A-E3/61 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, low-leakage transient suppression in high-volume industrial, automotive, and telecom systems where consistent clamping and assembly compatibility are critical.
FAQ
What is the maximum clamping voltage of the P4SMA120A-E3/61 under surge conditions?
The P4SMA120A-E3/61 has a maximum clamping voltage (VC) of 165 V when subjected to its rated peak pulse current of 1.8 A using the standard 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and represents the upper limit of voltage seen by downstream circuitry during transient suppression - critical for ensuring compatibility with 200 V-rated components.
Is the P4SMA120A-E3/61 suitable for automotive applications?
The P4SMA120A-E3/61 itself is commercial-grade, but Vishay offers AEC-Q101-qualified variants under the HE3 and HM3 suffixes (e.g., P4SMA120AHE3_A). While the P4SMA120A-E3/61 meets MSL Level 1 and RoHS requirements, automotive deployment requires explicit qualification - so designers should specify P4SMA120AHE3_A for BCM or powertrain modules needing certified reliability.
What does the "-E3/61" suffix indicate in P4SMA120A-E3/61?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability; "/61" specifies packaging in 7-inch diameter plastic tape and reel containing 1800 units. This ordering code ensures consistency in assembly line feeders and confirms compliance with environmental and process standards required for modern SMT manufacturing.
How does the P4SMA120A-E3/61 compare to bidirectional TVS diodes like P4SMA120CA?
The P4SMA120A-E3/61 is unidirectional and features a cathode band for polarity-sensitive placement, whereas P4SMA120CA is bidirectional with no polarity marking and symmetric clamping in both directions. The unidirectional version provides lower leakage (<1.0 µA at 102 V) and is preferred for DC power rail protection; bidirectional types suit AC-coupled signal lines or differential buses where polarity reversal occurs.
What is the thermal resistance and maximum operating temperature of the P4SMA120A-E3/61?
The P4SMA120A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W, measured on standard 0.2" × 0.2" copper pads. Its maximum operating junction temperature is +150 °C, allowing reliable operation in industrial enclosures with ambient temperatures up to +85 °C when properly mounted and derated per Figure 2 in the datasheet.
P4SMA120A-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 1.8A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA120A-E3/61 FAQ
1.How can I place an order for P4SMA120A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA120A-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 P4SMA120A-E3/61 reliable?
The price and inventory of P4SMA120A-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 P4SMA120A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA120A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA120A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA120A-E3/61?
P4SMA120A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA120A-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 P4SMA120A-E3/61?
For technical support, including P4SMA120A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA120A-E3/61 requirements.
6.How does Aetrix verify that P4SMA120A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA120A-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 P4SMA120A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA120A-E3/61?
All P4SMA120A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA120A-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 P4SMA120A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA120A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA120A-E3/61 Tags
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