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Vishay General Semiconductor - Diodes Division P4SMA120CAHE3/5A
- Part No.:
- P4SMA120CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA120CAHE3/5A.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,719
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Product details
Overview
P4SMA120CAHE3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping ESD and surge transients on signal/power lines. It features 120 V standoff voltage (VWM), 137 V maximum clamping voltage (VC) at 1.8 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the P4SMA120CAHE3/5A datasheet, P4SMA120CAHE3/5A pinout, P4SMA120CAHE3/5A application, or P4SMA120CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 120 V VWM tolerance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
The P4SMA120CAHE3/5A operates as a voltage-clamped protection device that conducts only when reverse (or forward, in bidirectional mode) voltage exceeds its breakdown threshold of 114–126 V at 1 mA test current. Its low incremental surge resistance ensures minimal voltage overshoot during fast transients.
It delivers 400 W peak pulse power (derated to 300 W above 91 V), supports repetitive surges at 0.01% duty cycle, and maintains stable performance across -65 °C to +150 °C junction temperature range - validated per J-STD-020 MSL Level 1 and AEC-Q101 stress requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - maximum continuous operating voltage before clamping begins; defines safe working margin for 120 V nominal systems. |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - precise voltage threshold where TVS transitions from high-impedance to low-impedance conduction. |
| VC (Clamping Voltage) | 165 V at IPPM = 1.8 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge event. |
| PPPM (Peak Pulse Power) | 400 W - energy-handling capacity under standardized 10/1000 µs surge; derates to 300 W above 91 V. |
| ID (Reverse Leakage) | 1 µA max at VWM - negligible standby current ensuring no system loading or battery drain in always-on applications. |
| TJ max | +150 °C - enables operation in under-hood automotive environments and high-temperature industrial enclosures. |
| AEC-Q101 Qualified | Yes - certified for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock testing. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional operation | Connected to line being protected; symmetric conduction path enables equal clamping in both directions. |
| Cathode | Current exit point in forward bias; common terminal in bidirectional operation | Connected to reference plane (e.g., ground or supply rail); forms dual-junction structure for bidirectional suppression. |
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 IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 120 V lines with margin. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive use including engine control modules, body electronics, and ADAS sensor interfaces. |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free reflow assembly without preconditioning or special handling. |
| Glass passivated chip junction | Ensures long-term stability and low leakage drift over temperature and lifetime. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers from load dump and ESD events in vehicle cabin modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply-to-ground. Use Value: Limits transient voltage to ≤165 V during 1.8 A surge, preserving transceiver integrity without adding series impedance. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input line referenced to common ground. Use Value: Clamps 400 W surges within 1 ns response time, preventing false triggering and latch-up in optocoupler input stages. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Shielding RS-485 transceivers in base station backhaul equipment from lightning-induced surges. IC Role / Device Role / Timing Role: Differential-mode TVS across A/B lines with common-mode choke integration. Use Value: Maintains signal integrity up to 10 Mbps while suppressing ±1 kV EFT bursts per IEC 61000-4-4. |
Use Scenario: Securing microcontroller GPIOs connected to push-button panels and relay drivers in smart home hubs. IC Role / Device Role / Timing Role: Point-of-use clamping on each user interface line before ESD-sensitive MCU pins. Use Value: Provides <1 µA leakage at 102 V VWM, eliminating battery drain in always-on standby modes. |
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; 137 V VC at 2.9 A | Better suited for higher-energy surges but requires larger PCB footprint | Select when surge energy exceeds 400 W or board layout allows SMB size |
| 1.5KE120CA | Through-hole TO-218 package; 1500 W PPPM; 193 V VC at 7.8 A | Designed for legacy through-hole assembly and higher-power industrial mains protection | Choose for retrofit designs or where manual assembly and higher robustness are prioritized |
Compared with SMBJ120CA and 1.5KE120CA, the P4SMA120CAHE3/5A offers optimal balance of AEC-Q101 compliance, compact SMA footprint, and 400 W surge handling - making it ideal for space-constrained automotive and industrial SMT designs requiring verified reliability.
Availability
P4SMA120CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, telecom line conditioning, and consumer appliance control boards requiring stable component supply and AEC-Q101 traceability.
Supply support for P4SMA120CAHE3/5A 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 reliability and automotive qualification.
The P4SMA Series targets cost-effective, high-volume transient suppression in automotive, industrial, and telecom applications - engineered for automated placement, AEC-Q101 compliance, and consistent clamping performance across temperature.
FAQ
What is the clamping voltage of P4SMA120CAHE3/5A at its rated peak pulse current?
The P4SMA120CAHE3/5A has a maximum clamping voltage (VC) of 165 V at 1.8 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is P4SMA120CAHE3/5A suitable for automotive applications?
Yes, P4SMA120CAHE3/5A is AEC-Q101 qualified (indicated by the HE3 suffix), meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and mechanical shock. It is explicitly intended for automotive use cases such as sensor interface protection, body control modules, and infotainment system I/O lines.
What does the "CA" suffix mean in P4SMA120CAHE3/5A?
The "CA" suffix in P4SMA120CAHE3/5A denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional variants (e.g., P4SMA120A), this version has no cathode marking and functions identically whether voltage is applied anode-to-cathode or cathode-to-anode.
What is the standoff voltage (VWM) rating for P4SMA120CAHE3/5A?
The standoff voltage (VWM) for P4SMA120CAHE3/5A is 102 V - the maximum DC or RMS voltage the device can withstand continuously without entering avalanche conduction. This rating ensures reliable operation in 120 V nominal systems while maintaining low leakage (<1 µA) and avoiding false triggering during normal operation.
Does P4SMA120CAHE3/5A require special PCB layout considerations?
Yes - for optimal surge performance, P4SMA120CAHE3/5A should be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to meet its 400 W peak pulse power rating. Short, low-inductance traces to protected nodes and reference planes are essential to minimize voltage overshoot during fast transients.
P4SMA120CAHE3/5A 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:
- Discontinued at Digi-Key
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA120CAHE3/5A FAQ
1.How can I place an order for P4SMA120CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA120CAHE3/5A 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 P4SMA120CAHE3/5A reliable?
The price and inventory of P4SMA120CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA120CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA120CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA120CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA120CAHE3/5A?
P4SMA120CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA120CAHE3/5A 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 P4SMA120CAHE3/5A?
For technical support, including P4SMA120CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA120CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA120CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA120CAHE3/5A 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 P4SMA120CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA120CAHE3/5A?
All P4SMA120CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA120CAHE3/5A, 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 P4SMA120CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA120CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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