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Vishay General Semiconductor - Diodes Division P4SMA12AHE3/61
- Part No.:
- P4SMA12AHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA12AHE3/61.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,533
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Product details
Overview
P4SMA12AHE3/61 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 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 10.2 V standoff voltage (VWM), 16.7 V maximum clamping voltage (VC) at 24.0 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the P4SMA12AHE3/61 datasheet, P4SMA12AHE3/61 pinout, P4SMA12AHE3/61 application, or P4SMA12AHE3/61 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
The P4SMA12AHE3/61 operates as a clamping-type TVS diode: under normal conditions it presents high impedance (≤1.0 µA reverse leakage at 10.2 V), then rapidly avalanches below 16.7 V to divert transient energy away from protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the SMA package supports thermal dissipation up to 3.3 W at 50 °C ambient on infinite heatsink.
Designed for single-polarity protection, it requires cathode-band orientation during layout; its 120 °C/W junction-to-ambient thermal resistance mandates appropriate copper pad area (0.2" × 0.2") per terminal for rated 400 W pulse handling. The device meets J-STD-020 MSL Level 1 and is qualified to AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at 1.0 mA - defines precise avalanche onset range for predictable clamping threshold |
| VWM | 10.2 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 16.7 V at 24.0 A - clamping voltage during 10/1000 µs transient, limiting stress on downstream components |
| PPPM | 400 W - peak pulse power handling capability with standardized waveform, derated above 25 °C |
| IFSM | 40 A - surge current rating for 8.3 ms half-sine wave, supporting inductive load switching events |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMA (DO-214AC) - surface-mount outline with matte tin-plated leads, compatible with J-STD-002 soldering |
Pinout & Package
Package: SMA (DO-214AC), molded epoxy case meeting UL 94 V-0 flammability rating; terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side of protected line; conducts during forward surge or ESD events |
| Cathode | Avalanche clamping node | Connected to higher-potential side; initiates controlled breakdown when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| 400 W peak pulse power | Robust suppression of ISO 7637-2 Load Dump and IEC 61000-4-5 surge events without degradation |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| MSL Level 1 rating | Enables direct placement without pre-baking, reducing manufacturing complexity and cost |
| Low profile SMA package | 0.208" × 0.157" footprint supports high-density PCB layouts in space-constrained modules |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load dump transients in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VIN and GND, absorbing >400 W surges within nanoseconds. Use Value: Limits voltage seen by downstream LDOs and MCUs to ≤16.7 V, preventing latch-up or permanent damage during alternator regulation failure. |
Use Scenario: Shielding analog output lines of pressure sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: TVS diode installed across signal and ground traces to suppress ESD and inductive kickback from nearby solenoid drivers. Use Value: Clamps transients to <17 V while maintaining <1 µA leakage at 10.2 V, preserving signal integrity and ADC accuracy. |
| Consumer Device USB Port Protection | Telecom Equipment DC Power Input Protection |
|
Use Scenario: Safeguarding USB VBUS lines in portable medical monitors exposed to accidental hot-plug events. IC Role / Device Role / Timing Role: Unidirectional TVS connected between VBUS and GND, activated only during overvoltage conditions. Use Value: Responds in <1 ns to clamp 15 kV ESD (IEC 61000-4-2) to ≤16.7 V, protecting USB transceivers without affecting normal 5 V operation. |
Use Scenario: Guarding -48 V DC input rails in telecom base station power supplies against lightning-induced surges. IC Role / Device Role / Timing Role: Staged TVS array where P4SMA12AHE3/61 serves as secondary clamp after primary MOV/GDT stages. Use Value: Provides precise 12 V reference clamping with low VC/VBR ratio (1.47), minimizing let-through energy to downstream DC/DC converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A-E3/52 | Higher 600 W PPPM, SMB package (DO-214AA), 12.2–13.5 V VBR, 19.9 V VC @ 30.1 A | Greater surge margin but larger footprint; better suited for high-energy industrial mains interfaces | Select when higher pulse power and board space permit; not drop-in due to different package and thermal profile |
| 1.5SMC12A | Same VBR/VWM specs, SMC (DO-214AB) package, 16.7 V VC @ 24.0 A, 1500 W PPPM | Larger package enables higher surge endurance; used where PCB layout allows 0.275" × 0.215" footprint | Choose for legacy designs using SMC or where higher single-pulse robustness is required; not pin-compatible |
Compared with SMBJ12A-E3/52 and 1.5SMC12A, the P4SMA12AHE3/61 offers optimal balance of AEC-Q101 compliance, compact SMA footprint, and sufficient 400 W surge rating for cost-sensitive automotive and industrial edge nodes - making it preferred where board area and automotive qualification are critical constraints.
Availability
P4SMA12AHE3/61 is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, and telecom power supply protection requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant sourcing.
Supply support for P4SMA12AHE3/61 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA Series was developed to deliver AEC-Q101-qualified, surface-mount TVS protection for automotive and industrial electronics where space, thermal performance, and transient immunity must coexist - targeting ECU, ADAS, and sensor interface applications.
FAQ
What is the breakdown voltage tolerance of P4SMA12AHE3/61?
The P4SMA12AHE3/61 has a specified breakdown voltage range of 11.4 V to 12.6 V at 1.0 mA test current, representing ±5% tolerance around the nominal 12 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports reliable system-level surge margin calculations in designs using the P4SMA12AHE3/61.
Is P4SMA12AHE3/61 suitable for bidirectional transient protection?
No, P4SMA12AHE3/61 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the P4SMA12CA variant. Using P4SMA12AHE3/61 in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit - always verify polarity alignment when deploying P4SMA12AHE3/61.
Does P4SMA12AHE3/61 require PCB layout derating for thermal performance?
Yes - the P4SMA12AHE3/61's 400 W peak pulse rating assumes mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Reducing pad size or omitting thermal vias increases junction temperature rise, derating both pulse power and steady-state power dissipation (PD = 3.3 W). Refer to Figure 2 in the P4SMA12AHE3/61 datasheet for exact derating curves versus ambient temperature and copper area.
What does the "HE3" suffix indicate in P4SMA12AHE3/61?
The "HE3" suffix in P4SMA12AHE3/61 denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads. "H" identifies AEC-Q101 grade, "E3" specifies RoHS-compliant materials, and "/61" indicates packaging in 7" diameter tape-and-reel format with 1800 units per reel - distinguishing it from commercial-grade "E3/61" or halogen-free "HM3" variants.
How does P4SMA12AHE3/61 compare to older P4SMA12A versions without HE3?
The P4SMA12AHE3/61 adds AEC-Q101 qualification, enhanced process controls, and guaranteed automotive-grade reliability over legacy P4SMA12A parts. While electrical parameters (VBR, VC, PPPM) remain identical, the HE3 version undergoes additional stress testing (HTOL, TC, UHAST) and provides full traceability - making P4SMA12AHE3/61 mandatory for automotive Tier 1 suppliers and preferred for industrial applications demanding extended lifetime validation.
P4SMA12AHE3/61 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 24A
- Power - Peak Pulse:
- 400W
- 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)
P4SMA12AHE3/61 FAQ
1.How can I place an order for P4SMA12AHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA12AHE3/61 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 P4SMA12AHE3/61 reliable?
The price and inventory of P4SMA12AHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA12AHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA12AHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA12AHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA12AHE3/61?
P4SMA12AHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA12AHE3/61 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 P4SMA12AHE3/61?
For technical support, including P4SMA12AHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA12AHE3/61 requirements.
6.How does Aetrix verify that P4SMA12AHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA12AHE3/61 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 P4SMA12AHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA12AHE3/61?
All P4SMA12AHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA12AHE3/61, 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 P4SMA12AHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA12AHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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