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Vishay General Semiconductor - Diodes Division P4SMA120CAHE3/61
- Part No.:
- P4SMA120CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA120CAHE3/61.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,572
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Product details
Overview
P4SMA120CAHE3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal or power lines. It features a 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 a 10/1000 μs waveform. It is AEC-Q101 qualified and used in automotive sensor protection circuits.
For engineers reviewing the P4SMA120CAHE3/61 datasheet, P4SMA120CAHE3/61 pinout, P4SMA120CAHE3/61 application, or P4SMA120CAHE3/61 equivalent, this device serves as a robust, RoHS-compliant, bidirectional TVS diode for ESD and surge suppression in automotive-grade embedded systems requiring stable clamping performance up to 150 °C junction temperature.
Technical Context
The P4SMA120CAHE3/61 operates bidirectionally with symmetrical breakdown characteristics - minimum breakdown voltage (VBR) of 114 V and maximum of 126 V at 1 mA test current. Its low incremental surge resistance enables fast response to transients, while its glass-passivated junction ensures stable leakage (<1 μA at VWM) and long-term reliability under repetitive surge stress.
Thermally, it exhibits a junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W, supporting operation across -65 °C to +150 °C. The device meets MSL level 1 per J-STD-020 and is rated for 300 W peak pulse power above 91 V when derated per temperature curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V–48 V automotive bus lines. |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - Confirmed symmetric breakdown range for bidirectional conduction; ensures predictable turn-on during positive/negative transients. |
| VC (Clamping Voltage) | 165 V at IPPM = 1.8 A - Measured clamping limit under 10/1000 μs surge; provides defined overvoltage ceiling for protected ICs like CAN transceivers or microcontrollers. |
| PPPM (Peak Pulse Power) | 400 W (≤91 V), 300 W (>91 V) - Sustains high-energy surges without failure; derates linearly above 25 °C per Fig. 2. |
| ID (Reverse Leakage) | <1 μA at 102 V - Minimal standby current draw; preserves signal integrity and battery life in always-on automotive modules. |
| TJ max. | +150 °C - Enables deployment in engine bay or powertrain ECUs where ambient temperatures exceed 105 °C. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including vibration, thermal cycling, and humidity exposure per AEC stress test requirements. |
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. Molding compound meets UL 94 V-0. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal 1 (cathode band absent) | One side of symmetrical PN junction; connects to line under protection (e.g., CAN_H or LIN bus). |
| Cathode | Terminal 2 (cathode band absent) | Other side of symmetrical junction; ties to same line or ground reference depending on layout; no functional polarity distinction in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential lines (e.g., RS-485, CAN FD) without external polarity management. |
| 400 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1/2a/3a surges and IEC 61000-4-5 Combination Wave (10/700 μs) up to Level 3 in properly decoupled layouts. |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling (-40 °C to +125 °C), mechanical shock, and board-level reliability testing. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements. |
| Low leakage (<1 μA at VWM) | Minimizes quiescent current in always-on vehicle networks (e.g., body control modules), extending battery reserve time. |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting high-speed CAN FD transceivers (e.g., TCAN1042) against load dump and ESD events in 12 V/24 V vehicle networks. IC Role / Device Role / Timing Role: Bidirectional TVS placed between CAN_H/CAN_L and chassis ground to clamp common-mode transients while preserving signal integrity. Use Value: Limits clamping voltage to ≤165 V, preventing damage to transceiver inputs rated for ±40 V common-mode range and maintaining bit error rate compliance. |
Use Scenario: Shielding analog output lines (4–20 mA, 0–10 V) from inductive switching noise in PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector entry point to shunt fast-rising transients before reaching ADC front-end. Use Value: Sub-100 pF junction capacitance minimizes signal distortion on 10 kHz bandwidth sensor outputs while delivering 165 V clamping at 1.8 A. |
| Telecom DSL Line Surge Suppression | Consumer Appliance Motor Drive Feedback Protection |
Use Scenario: Safeguarding ADSL/VDSL line interface ICs (e.g., LMX2594-based PHY) from lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Bidirectional TVS deployed across differential pair (TIP/RING) to suppress both longitudinal and transverse mode surges per ITU-T K.21. Use Value: 300 W rating above 91 V supports 10/700 μs telecom surge standards; AEC-Q101 qualification adds margin for harsh outdoor cabinet environments. |
Use Scenario: Protecting Hall-effect rotor position sensors in BLDC motor controllers from commutation-induced dv/dt spikes. IC Role / Device Role / Timing Role: TVS placed at sensor PCB edge to clamp coupled transients from nearby MOSFET switching nodes. Use Value: 150 °C max junction temperature allows placement near power stages; 1.8 A IPPM handles typical 1–2 A transient currents from 24 V motor drives. |
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 | Same VWM (102 V), higher VC (193 V at 1.6 A), SMB package (DO-214AA), 600 W PPPM rating | Larger footprint; better suited for higher-energy surges but less space-constrained than SMA | Select SMBJ120CA when board layout permits larger pad area and higher surge immunity is required beyond ISO 7637-2 Level 4. |
| 1.5KE120CA | Through-hole TO-204AE (DO-201AE), 120 V VWM, 193 V VC at 2.1 A, 1500 W PPPM | Not surface-mount; requires wave soldering or hand assembly; incompatible with automated SMT lines | Choose 1.5KE120CA only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency. |
Compared with SMBJ120CA and 1.5KE120CA, the P4SMA120CAHE3/61 delivers optimal balance of compact SMA packaging, AEC-Q101 qualification, and precise 165 V clamping-making it preferred for space-constrained, automotive-grade SMT applications where consistent low-profile mounting and traceable sourcing are critical.
Availability
P4SMA120CAHE3/61 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and telecom line protection requiring stable component supply, full RoHS compliance, and AEC-Q101 validation.
Supply support for P4SMA120CAHE3/61 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, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The P4SMA series was developed specifically for surface-mount transient suppression in automotive, industrial, and telecom systems where compact size, bidirectional capability, and AEC-Q101 compliance are mandatory design requirements.
FAQ
What is the clamping voltage of P4SMA120CAHE3/61 at its rated peak pulse current?
The P4SMA120CAHE3/61 has a maximum clamping voltage (VC) of 165 V at 1.8 A peak pulse current (IPPM), measured under the standardized 10/1000 μs waveform. This value is confirmed in the Electrical Characteristics table on page 2 of Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA120CAHE3/61 maintains this clamping performance across its full operating temperature range.
Is P4SMA120CAHE3/61 suitable for automotive applications?
Yes, P4SMA120CAHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix, indicating RoHS-compliant and AEC-Q101-qualified construction. It undergoes stress testing for temperature cycling, mechanical shock, and humidity resistance per AEC requirements. The P4SMA120CAHE3/61 is commonly deployed in body control modules, ADAS sensor interfaces, and infotainment power rails where automotive-grade reliability is mandated.
What does the "CA" suffix mean in P4SMA120CAHE3/61?
The "CA" suffix in P4SMA120CAHE3/61 denotes a bidirectional configuration - meaning the device functions identically for positive and negative voltage transients, with symmetrical breakdown and clamping characteristics. This eliminates the need for polarity-aware placement and makes the P4SMA120CAHE3/61 ideal for protecting differential buses like CAN, RS-485, or telecom lines where transient polarity is unpredictable.
What is the thermal resistance of P4SMA120CAHE3/61, and how does it affect PCB layout?
The P4SMA120CAHE3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W, measured on 0.2" × 0.2" copper pads. To maintain safe junction temperatures under repetitive surge conditions, PCB layout must provide adequate copper area per terminal - the P4SMA120CAHE3/61 datasheet specifies minimum pad dimensions and recommends thermal vias for high-duty-cycle applications.
How does P4SMA120CAHE3/61 differ from unidirectional P4SMA120AHE3/61?
The P4SMA120CAHE3/61 is bidirectional with symmetrical VBR (114–126 V) and no cathode marking, while the unidirectional P4SMA120AHE3/61 has an identifiable cathode band and conducts only in reverse bias. Their clamping voltages differ slightly (165 V vs. 167 V), and the unidirectional version supports forward surge current (IFSM = 40 A), which the P4SMA120CAHE3/61 does not. The P4SMA120CAHE3/61 is selected when protection is needed for AC or differential signals.
P4SMA120CAHE3/61 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:
- 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)
P4SMA120CAHE3/61 FAQ
1.How can I place an order for P4SMA120CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA120CAHE3/61 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 P4SMA120CAHE3/61 reliable?
The price and inventory of P4SMA120CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA120CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA120CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA120CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA120CAHE3/61?
P4SMA120CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA120CAHE3/61 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 P4SMA120CAHE3/61?
For technical support, including P4SMA120CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA120CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA120CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA120CAHE3/61 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 P4SMA120CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA120CAHE3/61?
All P4SMA120CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA120CAHE3/61, 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 P4SMA120CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA120CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA120CAHE3/61 Tags
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