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Vishay General Semiconductor - Diodes Division P4SMA120AHE3/61
- Part No.:
- P4SMA120AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA120AHE3/61.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,863
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Product details
Overview
P4SMA120AHE3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 120 V standoff voltage (VWM), 165 V maximum clamping voltage (VC) at 1.8 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P4SMA120AHE3/61 datasheet, P4SMA120AHE3/61 pinout, P4SMA120AHE3/61 application, or P4SMA120AHE3/61 equivalent, this device serves as an AEC-Q101-qualified transient suppressor with verified thermal resistance (RθJA = 120 °C/W), low incremental surge resistance, and glass-passivated junction for stable clamping performance under repetitive surge conditions.
Technical Context
The P4SMA120AHE3/61 operates as a unidirectional avalanche diode with cathode-band polarity marking, leveraging silicon junction breakdown to clamp overvoltage events. Its 114–126 V breakdown voltage (VBR at 1 mA) ensures precise triggering above system operating voltage while maintaining low leakage (<1 µA at 102 V).
It delivers 165 V clamping voltage at 1.8 A IPPM under standardized 10/1000 µs surge, with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), enabling reliable operation up to 150 °C junction temperature and supporting high-reliability automotive deployments per AEC-Q101.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin for 120 V nominal systems. |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients without premature conduction. |
| VC (Clamping Voltage) | 165 V at 1.8 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 µs surge; limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Sustained energy absorption capability under standard surge waveform; supports IEC 61000-4-5 Level 4 compliance when properly mounted. |
| ID (Reverse Leakage) | <1 µA at 102 V - Negligible standby current; avoids loading sensitive reference or bias networks in always-on circuits. |
| TJ max | 150 °C - Maximum junction temperature rating; enables use in under-hood automotive environments and industrial enclosures without derating below 125 °C ambient. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; designated by HE3 suffix. |
Pinout & Package
Package: SMA (DO-214AC) - Surface-mount plastic package with matte tin-plated leads, UL 94 V-0 rated molding compound, and MSL Level 1 moisture sensitivity (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower-potential side of protected line | Enables unidirectional clamping from cathode to anode; must be tied to ground or return path for proper transient shunting. |
| Cathode (marked with band) | Current exit terminal in forward bias; connected to higher-potential side of protected line | Defines polarity-sensitive placement; reverse-biased during normal operation and avalanches to ground during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable VBR and low leakage over lifetime and temperature; eliminates passivation-related drift in harsh environments. |
| 400 W peak pulse power (10/1000 µs) | Supports robust protection against lightning-induced surges and inductive switching spikes in 24 V and 48 V industrial buses. |
| AEC-Q101 qualification (HE3 suffix) | Validates suitability for automotive powertrain, body control, and ADAS sensor modules requiring zero-failure field reliability. |
| Low profile SMA package | Enables automated pick-and-place assembly and compact PCB layouts; compatible with standard DO-214AC footprints and reflow profiles. |
| 120 °C/W junction-to-ambient thermal resistance | Permits direct mounting on 5 mm × 5 mm copper pads without heatsinks for intermittent surge duty in space-constrained designs. |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach IC input pins. Use Value: Limits voltage to ≤165 V during 1.8 A surge, preventing latch-up or gate oxide damage in 12 V/24 V automotive subsystems. |
Use Scenario: Safeguarding digital input terminals of programmable logic controllers against inductive kickback from solenoid valves and relay coils. IC Role / Device Role / Timing Role: Standoff-rated TVS installed across input terminals to absorb 400 W surges without degradation over >10⁵ cycles. Use Value: Maintains <1 µA leakage at 102 V, avoiding false triggering in 24 V DC input detection circuits while surviving repeated 10/1000 µs events. |
| Telecom Power Rail Clamping | Consumer Power Adapter Surge Suppression |
|
Use Scenario: Secondary-side overvoltage suppression on 48 V PoE-powered equipment (e.g., IP cameras, wireless APs) exposed to Ethernet cable surges. IC Role / Device Role / Timing Role: Fast-response TVS placed between VDD and GND to clamp transients within nanoseconds before regulator or PHY ICs are stressed. Use Value: Achieves 165 V clamping at 1.8 A with <10 ns response time, meeting IEC 61000-4-5 Ed. 3 requirements for Class B equipment. |
Use Scenario: Input-stage transient suppression in AC-DC adapters for smart home devices, guarding against mains-borne surges and EFT bursts. IC Role / Device Role / Timing Role: Primary-side unidirectional TVS across bulk capacitor to limit voltage overshoot during line switching or lightning coupling. Use Value: Withstands 400 W peak power and 150 °C junction temperature, ensuring long-term reliability in enclosed, thermally limited adapter housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ120A-E3/5A | Same VWM (102 V), identical SMA package, but rated for 400 W with 1.0 mA IT and 165 V VC; no AEC-Q101 qualification. | Commercial-grade only; not validated for automotive temperature cycling or humidity testing. | Select when AEC-Q101 is unnecessary and cost optimization is prioritized over automotive reliability validation. |
| 1.5SMC120A | Higher package thermal mass (SMC/DO-214AB), 165 V VC at 1.8 A, same 400 W rating, but RθJA = 100 °C/W and no AEC-Q101. | Better thermal dissipation in high-duty-cycle scenarios, but larger footprint and incompatible with SMA-reflow profiles. | Choose for industrial applications needing enhanced thermal margin where board space allows DO-214AB layout. |
Compared with SMAJ120A-E3/5A and 1.5SMC120A, the P4SMA120AHE3/61 uniquely combines AEC-Q101 qualification, SMA footprint compatibility, and verified 120 °C/W thermal resistance - making it the only option qualified for automotive under-hood deployment without layout or process changes.
Availability
P4SMA120AHE3/61 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC inputs, telecom power rails, and consumer power adapter designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA120AHE3/61 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, precision, and automotive-grade validation.
The P4SMA series is engineered for high-energy transient suppression in space-constrained, high-reliability applications - particularly targeting automotive electronics, industrial controls, and telecom infrastructure where consistent clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of P4SMA120AHE3/61 at its rated peak pulse current?
The P4SMA120AHE3/61 has a maximum clamping voltage (VC) of 165 V at 1.8 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay's datasheet 88367 and reflects the actual voltage imposed on the protected circuit during worst-case transient events, ensuring downstream ICs remain within safe operating limits.
Is P4SMA120AHE3/61 qualified for automotive applications?
Yes, the P4SMA120AHE3/61 is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its ordering code and documented in Vishay's P4SMA Series datasheet revision 09-Jan-2024. It undergoes full automotive reliability testing including temperature cycling, high-temperature reverse bias, and ESD, making it suitable for engine control units, body electronics, and ADAS sensor modules.
What is the standoff voltage (VWM) and why does it matter for P4SMA120AHE3/61?
The P4SMA120AHE3/61 has a standoff voltage (VWM) of 102 V, meaning it remains non-conductive up to this reverse voltage during normal operation. This parameter ensures minimal leakage current (<1 µA) while providing sufficient margin above typical 96–100 V automotive battery transients, preventing false triggering and preserving signal integrity in always-on circuits.
How does the SMA (DO-214AC) package of P4SMA120AHE3/61 affect PCB layout and thermal design?
The SMA package of P4SMA120AHE3/61 requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated 400 W pulse handling. Its RθJA of 120 °C/W means thermal performance depends critically on pad size and copper area - undersized pads cause excessive junction heating and reduced surge endurance. The low-profile form factor supports dense routing in automotive ECUs and telecom modules.
Can P4SMA120AHE3/61 be used in bidirectional configurations?
No, P4SMA120AHE3/61 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA120CA). Using P4SMA120AHE3/61 in bidirectional signal paths would leave positive-going transients unprotected; correct selection requires matching device polarity to system grounding architecture and surge directionality.
P4SMA120AHE3/61 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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA120AHE3/61 FAQ
1.How can I place an order for P4SMA120AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA120AHE3/61 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 P4SMA120AHE3/61 reliable?
The price and inventory of P4SMA120AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA120AHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA120AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA120AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA120AHE3/61?
P4SMA120AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA120AHE3/61 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 P4SMA120AHE3/61?
For technical support, including P4SMA120AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA120AHE3/61 requirements.
6.How does Aetrix verify that P4SMA120AHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA120AHE3/61 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 P4SMA120AHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA120AHE3/61?
All P4SMA120AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA120AHE3/61, 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 P4SMA120AHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA120AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA120AHE3/61 Tags
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