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Vishay General Semiconductor - Diodes Division P4SMA120AHE3_A/H
- Part No.:
- P4SMA120AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA120AHE3_A/H.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,478
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Product details
Overview
P4SMA120AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 120 V standoff voltage (VWM), 114–126 V breakdown voltage (VBR) at 1 mA, 165 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 - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the P4SMA120AHE3_A/H datasheet, P4SMA120AHE3_A/H pinout, P4SMA120AHE3_A/H application, or P4SMA120AHE3_A/H equivalent, key selection criteria include clamping performance under 10/1000 µs transients, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on DO-214AC footprints.
Technical Context
The P4SMA120AHE3_A/H operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its specified breakdown range (114–126 V). Its glass-passivated junction ensures stable leakage (<1.0 µA at 102 V) and fast response time (<1.0 ns), enabling effective suppression of ESD and inductive switching spikes.
Thermally, it uses the SMA (DO-214AC) package with RθJL = 30 °C/W and RθJA = 120 °C/W (on 0.2" × 0.2" copper pads), supporting continuous power dissipation up to 3.3 W at 50 °C ambient. It is rated for operation from –65 °C to +150 °C and qualified to AEC-Q101 for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse operating voltage before significant conduction begins |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - Confirmed avalanche initiation range under standardized test conditions |
| VC (Clamping Voltage) | 165 V at IPPM = 1.8 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case transient |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capability per single 10/1000 µs transient event |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - Ensures minimal standby current draw in high-impedance signal paths |
| TJ max. | +150 °C - Junction temperature limit compatible with under-hood automotive environments |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; meets UL 94 V-0 and J-STD-020 MSL Level 1 (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VREV > VBR |
| Anode | Reference / return path | Typically tied to system ground or low-impedance return plane for clamping action |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges without derating |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS sensor modules |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal/humidity stress |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., relay coil flyback) |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without pre-baking or special handling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach sensitive interface ICs. Use Value: Maintains signal integrity below 165 V clamping threshold while surviving repetitive 400 W pulses per AEC-Q101 stress profiles. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers exposed to inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing >1 kV transients induced by field wiring, preventing false triggering or latch-up in input buffers. Use Value: 102 V VWM allows reliable operation across 24 V ±15% supply range while delivering sub-200 V clamping under 1.8 A surge. |
| Telecom Power Supply Clamp | Consumer Appliance Motor Control |
Use Scenario: Secondary-side overvoltage protection on 48 V telecom power rails subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Fast-response TVS shunting transient energy away from DC-DC converters and PMICs downstream of bulk filtering. Use Value: 120 V rating aligns with 48 V systems using 2:1 safety margin; 165 V VC prevents downstream component overstress during 10/1000 µs events. |
Use Scenario: Suppressing flyback voltage spikes from brushed DC motors in washing machines and HVAC blowers during commutation. IC Role / Device Role / Timing Role: Unidirectional clamp across motor terminals or H-bridge outputs to protect MOSFETs and gate drivers. Use Value: 400 W PPPM handles repeated motor-switching surges; AEC-Q101 qualification ensures reliability in high-vibration, thermally cyclic appliance environments. |
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-E3/5A | Same VWM (102 V), identical DO-214AC package, but lower PPPM (400 W same), higher ID (5 µA vs. 1 µA) | No AEC-Q101 qualification; intended for commercial/industrial use only | Select when automotive qualification is not required and higher leakage is acceptable |
| 1.5SMC120A | Larger SMC (DO-214AB) package; same electrical specs but higher thermal mass (RθJA = 60 °C/W) and 1500 W PPPM rating | Better thermal performance for high-duty-cycle surges; requires larger PCB footprint | Choose for higher-reliability industrial power supplies where board space permits larger package |
Compared with SMAJ120A-E3/5A, P4SMA120AHE3_A/H offers automotive-grade reliability and tighter leakage control; versus 1.5SMC120A, it trades higher surge capacity and thermal margin for compact DO-214AC layout and AEC-Q101 compliance.
Availability
P4SMA120AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom power rail protection, and consumer appliance motor control requiring stable component supply and AEC-Q101 assurance.
Supply support for P4SMA120AHE3_A/H 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, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and telecom systems - engineered for automated assembly, thermal robustness, and consistent clamping performance across temperature and life cycles.
FAQ
What is the clamping voltage of P4SMA120AHE3_A/H under a 10/1000 µs transient?
The P4SMA120AHE3_A/H 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 defined in the Vishay datasheet and reflects the upper voltage limit imposed on the protected circuit during such an event. The P4SMA120AHE3_A/H maintains this clamping performance across its specified operating temperature range.
Is P4SMA120AHE3_A/H qualified for automotive applications?
Yes, P4SMA120AHE3_A/H is AEC-Q101 qualified, confirming its reliability for automotive use cases including engine control units, body electronics, and ADAS sensor modules. The "HE3" suffix denotes RoHS-compliant and AEC-Q101 qualified construction, validated for temperature cycling, high-temperature reverse bias, and ESD robustness. P4SMA120AHE3_A/H meets these requirements without derating in standard mounting configurations.
What is the standoff voltage (VWM) and why does it matter for P4SMA120AHE3_A/H?
The standoff voltage (VWM) of P4SMA120AHE3_A/H is 102 V - the maximum continuous reverse voltage it can block without entering avalanche conduction. This parameter ensures normal circuit operation under nominal conditions while allowing sufficient margin below the 114–126 V breakdown range. For P4SMA120AHE3_A/H, VWM enables safe use in 24 V and 48 V systems with typical overvoltage tolerances, preventing false triggering during routine voltage fluctuations.
Does P4SMA120AHE3_A/H have a bidirectional variant?
No, P4SMA120AHE3_A/H is strictly unidirectional, indicated by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., P4SMA120CA). The unidirectional configuration of P4SMA120AHE3_A/H provides asymmetric clamping - conducting only in reverse bias - making it ideal for DC-coupled lines referenced to ground. Using P4SMA120AHE3_A/H in AC or floating applications would require external biasing or a different device.
What package type does P4SMA120AHE3_A/H use and what are its assembly requirements?
P4SMA120AHE3_A/H uses the SMA (DO-214AC) surface-mount package - a low-profile, two-terminal outline with 0.208" length and 0.157" width. It is rated MSL Level 1 and supports peak reflow temperatures up to 260 °C, requiring no pre-baking. Standard solder paste and reflow profiles for RoHS-compliant lead-free processes apply. The P4SMA120AHE3_A/H footprint matches JEDEC DO-214AC land patterns with 0.2" × 0.2" copper pads recommended for thermal performance.
P4SMA120AHE3_A/H 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:
- -
- 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_A/H FAQ
1.How can I place an order for P4SMA120AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA120AHE3_A/H 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_A/H reliable?
The price and inventory of P4SMA120AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA120AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA120AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA120AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA120AHE3_A/H?
P4SMA120AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA120AHE3_A/H 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_A/H?
For technical support, including P4SMA120AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA120AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA120AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA120AHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA120AHE3_A/H?
All P4SMA120AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA120AHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for P4SMA120AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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