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Vishay General Semiconductor - Diodes Division P4SMA120CA-E3/61
- Part No.:
- P4SMA120CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA120CA-E3/61.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA120CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P4SMA series, designed for clamping voltage transients on signal and power lines. It features a 120 V standoff voltage (VWM), 137 V maximum clamping voltage (VC) at 1.8 A peak pulse current (IPPM), and 400 W peak pulse power rating with a 10/1000 µs waveform. It is used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment against inductive switching surges.
For engineers reviewing the P4SMA120CA-E3/61 datasheet, P4SMA120CA-E3/61 pinout, P4SMA120CA-E3/61 application, or P4SMA120CA-E3/61 equivalent, this page provides verified electrical parameters, package dimensions, clamping behavior under surge conditions, thermal resistance data, and RoHS-compliant commercial-grade sourcing details - all specific to the P4SMA120CA-E3/61 variant.
Technical Context
The P4SMA120CA-E3/61 operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its breakdown voltage (VBR) is specified at 114–126 V (min/max) with 1 mA test current, and it maintains stable clamping up to TJ = 150 °C with derated peak power above 91 V (300 W).
It uses a glass-passivated junction in an SMA (DO-214AC) package, rated for MSL Level 1 per J-STD-020, with matte tin-plated leads solderable per J-STD-002. Thermal resistance is 120 °C/W junction-to-ambient (RθJA) on standard 0.2" × 0.2" copper pads, and it meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes - though P4SMA120CA-E3/61 itself is commercial-grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - Voltage at which avalanche conduction initiates; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 165 V at IPPM = 1.8 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for downstream component survivability. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capability under standardized 10/1000 µs waveform; confirms robustness against common lightning/inductive spikes. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max | 150 °C - Maximum junction temperature; supports operation in industrial ambient environments with appropriate PCB thermal design. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on minimal copper pad layout; informs required board-level heatsinking for sustained surge duty. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), cathode band absent per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical avalanche junction; conducts during negative-going surges. |
| Anode | Transient current exit (positive polarity) | Same physical terminal serves as return path during positive-going surges due to bidirectional symmetry. |
| Cathode | Transient current entry (positive polarity) | Second terminal of symmetrical junction; conducts during positive-going surges. |
| Cathode | Transient current exit (negative polarity) | Same physical terminal serves as return path during negative-going surges. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power (10/1000 µs) | Handles industry-standard lightning and EFT surges without degradation under repetitive 0.01% duty cycle. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), improving protection fidelity. |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without moisture-related popcorning or delamination. |
| RoHS-compliant, matte tin terminations | Ensures reliable solder wetting and long-term intermetallic stability in automated manufacturing. |
Applications
| Industrial Motor Control | Telecom Line Interface |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensors in variable-frequency drives subjected to IGBT switching noise and load dump events. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient spikes on isolated analog feedback paths and low-voltage logic supply rails. Use Value: Prevents latch-up or permanent damage to op-amps and microcontrollers by limiting induced surges to ≤165 V during 1.8 A transients. |
Use Scenario: Surge suppression on RJ-45 Ethernet PHY interfaces exposed to lightning-induced common-mode transients in outdoor base stations. IC Role / Device Role / Timing Role: Primary line-side transient suppressor placed before common-mode chokes and transformer center taps. Use Value: Maintains signal integrity by clamping differential surges within Ethernet voltage tolerance limits while surviving repeated 400 W pulses. |
| Automotive Body Control Module | Consumer Sensor Hub |
Use Scenario: Protecting LIN bus transceivers and door-lock actuator drivers from battery load dump and alternator ripple. IC Role / Device Role / Timing Role: Secondary-level TVS on 12 V supply rails and bidirectional data lines where AEC-Q101 is not mandated but reliability is critical. Use Value: Provides cost-effective commercial-grade surge immunity with 102 V standoff, avoiding overdesign while meeting ISO 7637-2 pulse 5a requirements. |
Use Scenario: Shielding MEMS accelerometer and temperature sensor outputs in smart home hubs from ESD and nearby relay switching noise. IC Role / Device Role / Timing Role: Localized point-of-use TVS on low-capacitance analog sensor traces to preserve bandwidth and SNR. Use Value: Delivers <1.0 µA leakage at 102 V, minimizing DC offset error and enabling accurate sub-mV signal measurement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; 120 V VWM same, but VC = 193 V at 2.1 A. | Preferred where higher surge margin is needed and PCB space allows larger footprint. | Select SMBJ120CA if system-level surge testing exceeds IEC 61000-4-5 Level 4 and layout permits SMB size. |
| 1.5SMC120CA | Same 120 V VWM, but 1500 W PPPM; much larger SMC (DO-214AB) package; VC = 193 V at 6.5 A. | Used in primary AC input protection or high-energy industrial power supplies. | Choose 1.5SMC120CA only when protecting high-current bus lines where 1.5 kW surge capacity is validated. |
Compared with P4SMA120CA-E3/61, SMBJ120CA offers higher surge headroom in a moderately larger package, while 1.5SMC120CA delivers threefold power handling at the cost of significant board area - making P4SMA120CA-E3/61 optimal for space-constrained, medium-energy signal-line protection.
Availability
P4SMA120CA-E3/61 is available at Aetrix Electronics and suitable for industrial motor control, telecom line interface, automotive body electronics, and consumer sensor hub designs requiring stable component supply, RoHS compliance, and consistent surge performance across production batches.
Supply support for P4SMA120CA-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 passive components with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P4SMA series was developed for compact, high-reliability transient suppression in space-constrained surface-mount applications across industrial, telecom, and consumer electronics - balancing surge capability, thermal performance, and manufacturability.
FAQ
What is the clamping voltage of P4SMA120CA-E3/61 under a 10/1000 µs surge?
The P4SMA120CA-E3/61 has a maximum clamping voltage (VC) of 165 V when subjected to a 1.8 A peak pulse current with a 10/1000 µs waveform. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during such transients. The P4SMA120CA-E3/61 achieves this clamping performance while maintaining low incremental surge resistance, ensuring minimal overshoot beyond the specified VC.
Is P4SMA120CA-E3/61 suitable for automotive applications?
P4SMA120CA-E3/61 is a commercial-grade device and is not AEC-Q101 qualified. For automotive use, Vishay offers the P4SMA120CAHE3_A variant (with HE3 suffix), which carries AEC-Q101 qualification and enhanced reliability screening. The P4SMA120CA-E3/61 may be used in non-safety-critical automotive subsystems where qualification is not mandated, but system validation remains the customer's responsibility.
What is the thermal resistance of P4SMA120CA-E3/61, and how does it affect layout?
The P4SMA120CA-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimal PCB copper; increasing pad area or adding internal ground planes reduces RθJA and improves surge endurance. Layout must avoid excessive trace length between the P4SMA120CA-E3/61 and protected node to preserve low-inductance clamping path.
Does P4SMA120CA-E3/61 have polarity markings?
No, P4SMA120CA-E3/61 is a bidirectional TVS diode and carries no polarity marking - including no cathode band - because its symmetrical avalanche structure clamps transients equally in both directions. This eliminates orientation errors during automated placement and simplifies routing on differential or AC-coupled lines. Unidirectional variants (e.g., P4SMA120A) do include a cathode band.
What is the maximum reverse leakage current of P4SMA120CA-E3/61 at its standoff voltage?
The P4SMA120CA-E3/61 exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 102 V standoff voltage (VWM), measured at TA = 25 °C. This low leakage ensures minimal impact on high-impedance sensor inputs or precision reference nodes. Leakage increases with temperature but remains below 5 µA up to 85 °C, as confirmed by Vishay's characterization curves.
P4SMA120CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
P4SMA120CA-E3/61 FAQ
1.How can I place an order for P4SMA120CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA120CA-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 P4SMA120CA-E3/61 reliable?
The price and inventory of P4SMA120CA-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 P4SMA120CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA120CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA120CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA120CA-E3/61?
P4SMA120CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA120CA-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 P4SMA120CA-E3/61?
For technical support, including P4SMA120CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA120CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA120CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA120CA-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 P4SMA120CA-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA120CA-E3/61?
All P4SMA120CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA120CA-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 P4SMA120CA-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA120CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA120CA-E3/61 Tags
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