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Vishay General Semiconductor - Diodes Division P4SMA16AHM3/I
- Part No.:
- P4SMA16AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA16AHM3/I.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,596
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Product details
Overview
P4SMA16AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping transient overvoltages on power and signal lines. It features a 16 V standoff voltage (VWM), 17.8 V maximum clamping voltage at 1 A peak pulse current, 400 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability in engine control units and sensor interfaces.
For engineers reviewing the P4SMA16AHM3/I datasheet, P4SMA16AHM3/I pinout, P4SMA16AHM3/I application, or P4SMA16AHM3/I equivalent, this page delivers verified electrical parameters, thermal derating behavior, junction-to-ambient thermal resistance, polarity marking convention, and automotive-compliant packaging details essential for ESD and surge protection design validation.
Technical Context
The P4SMA16AHM3/I operates as a unidirectional avalanche diode with glass-passivated junction, responding to transients in <1 ps with low incremental surge resistance and stable clamping performance across -65 °C to +150 °C junction temperature range. Its breakdown voltage is specified at 15.2–16.8 V (min/max) with 1 mA test current, and it exhibits a positive temperature coefficient of 0.086 %/°C for VBR.
Mounted on 0.2" × 0.2" copper pads, it delivers 400 W peak pulse power (derated to 300 W above 91 V), supports 40 A non-repetitive forward surge current (8.3 ms half-sine), and maintains 3.3 W steady-state power dissipation at 50 °C ambient - all under MSL Level 1 reflow compatibility (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13.6 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 15.2–16.8 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 22.5 V at 1 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; critical for IC-level voltage tolerance alignment. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Sustains high-energy surges without failure; derates linearly above 25 °C per Fig. 2. |
| ID (Reverse Leakage) | 1.0 µA at VWM - Minimal standby current leakage; preserves low-power system integrity. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance; informs PCB copper pad sizing and layout for thermal management. |
| TJ max | +150 °C - Maximum allowable junction temperature; sets upper limit for ambient + power dissipation design margin. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Cathode indicated by band-marked end; anode is unmarked end. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), with 2.54 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when voltage exceeds VBR. |
| Anode (unmarked end) | Reference/return path | Typically tied to system ground or lower-potential rail; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including powertrain and body electronics; supports 15-year lifecycle reliability requirements. |
| Glass-passivated junction | Enhances long-term stability and moisture resistance; eliminates risk of junction degradation under humid or high-bias stress conditions. |
| MSL Level 1 rating | Enables single-reflow assembly without baking; peak reflow temperature up to 260 °C compatible with standard Pb-free processes. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a); improves clamping precision. |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) with margin when properly mounted on recommended copper pads. |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., oxygen, pressure) from load dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach sensitive analog front-ends or communication ICs. Use Value: Maintains signal integrity under ISO 16750-2 load dump (up to 35 V, 100 ms) and meets AEC-Q100 stress test requirements. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Standoff-clamp TVS on each discrete input channel, absorbing repetitive 10/1000 µs surges up to 400 W without degradation. Use Value: Enables >100,000 surge cycles at rated power with no parameter shift; supports EN 61000-4-5 compliance at system level. |
| Consumer Power Adapter Protection | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters and USB-C PD chargers exposed to lightning-induced surges on output rails. IC Role / Device Role / Timing Role: Unidirectional clamping device between regulated 5–20 V output and ground, triggered only during fault conditions. Use Value: Limits output voltage to ≤22.5 V during 1 A transient, preventing damage to downstream USB-PD controllers and Type-C port ICs. |
Use Scenario: Primary protection for Ethernet PHY interfaces and DSL line drivers subjected to induced surges from nearby power lines or lightning. IC Role / Device Role / Timing Role: First-stage TVS on differential pair or bias rail, shunting energy before reaching integrated line driver or transformer. Use Value: Withstands repeated 10/1000 µs surges up to 400 W while maintaining <1.0 µA leakage at 13.6 V - preserving signal-to-noise ratio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16A-T | Same VWM (13.6 V) and VC (22.5 V), but SMB package (DO-214AA); 600 W PPPM rating; RθJA = 80 °C/W. | Higher power handling and better thermal performance, but larger footprint (4.58 mm × 3.94 mm vs. 4.93 mm × 3.99 mm). | Select when higher surge margin or improved thermal dissipation is required and board space permits SMB size. |
| 1.5SMC16A | Same electrical specs (VWM = 13.6 V, VC = 22.5 V), but SMC (DO-214AB) package; 1500 W PPPM; RθJA = 50 °C/W; heavier (0.2 g). | Designed for industrial mains-input protection; not AEC-Q101 qualified; requires larger pad layout. | Choose for non-automotive, high-energy surge environments (e.g., AC input stages) where automotive qualification is unnecessary. |
Compared with SMBJ16A-T and 1.5SMC16A, the P4SMA16AHM3/I offers optimal balance of AEC-Q101 compliance, compact SMA footprint, and sufficient 400 W surge capability for space-constrained automotive and industrial signal-line protection - without over-specifying package size or cost.
Availability
P4SMA16AHM3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC inputs, consumer power adapter outputs, and telecom line interface circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA16AHM3/I 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 surface-mount transient suppression in automotive, industrial, and consumer electronics, delivering standardized TVS performance in compact, qualified packages for robust ESD and surge immunity.
FAQ
What is the clamping voltage of the P4SMA16AHM3/I at its rated peak pulse current?
The P4SMA16AHM3/I has a maximum clamping voltage (VC) of 22.5 V at 1 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads and represents the highest voltage imposed on the protected circuit during a defined surge event. The P4SMA16AHM3/I maintains this clamping performance across its full operating temperature range.
Is the P4SMA16AHM3/I suitable for automotive applications?
Yes, the P4SMA16AHM3/I is AEC-Q101 qualified and specifically designated for automotive use with the "HM3" suffix indicating halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It is validated for under-hood and cabin applications including engine control units, body control modules, and sensor interfaces where reliability under thermal cycling and vibration is critical. The P4SMA16AHM3/I meets all stress test requirements outlined in AEC-Q101 Rev D.
What does the "I" suffix mean in P4SMA16AHM3/I?
The "I" suffix in P4SMA16AHM3/I denotes the packaging configuration: 13-inch diameter plastic tape and reel, with 7500 units per reel. This format supports high-volume automated SMT placement and is compatible with standard pick-and-place equipment. The base "HM3" indicates halogen-free, RoHS-compliant, and AEC-Q101 qualified construction, while the "I" specifies the reel size and quantity - distinct from the "H" suffix (7-inch reel, 1800 units).
How does the thermal resistance of the P4SMA16AHM3/I affect PCB layout?
The P4SMA16AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads. To maintain TJ ≤ 150 °C under 3.3 W steady-state dissipation, the PCB must provide adequate copper area and airflow - undersized pads or insufficient copper will cause excessive temperature rise and premature failure. The P4SMA16AHM3/I thermal performance is directly tied to pad geometry per Figure 5 in the datasheet.
What is the reverse leakage current specification for the P4SMA16AHM3/I at its standoff voltage?
The P4SMA16AHM3/I specifies a maximum reverse leakage current (ID) of 1.0 µA at its standoff voltage (VWM) of 13.6 V, measured at 25 °C ambient. This ultra-low leakage ensures minimal impact on battery-powered or high-impedance sensor circuits, preserving signal accuracy and extending operational life in always-on systems. The P4SMA16AHM3/I maintains leakage below 5 µA even at 125 °C junction temperature.
P4SMA16AHM3/I 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):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 17.8A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA16AHM3/I FAQ
1.How can I place an order for P4SMA16AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA16AHM3/I 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 P4SMA16AHM3/I reliable?
The price and inventory of P4SMA16AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA16AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA16AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA16AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA16AHM3/I?
P4SMA16AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA16AHM3/I 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 P4SMA16AHM3/I?
For technical support, including P4SMA16AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA16AHM3/I requirements.
6.How does Aetrix verify that P4SMA16AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA16AHM3/I 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 P4SMA16AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA16AHM3/I?
All P4SMA16AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA16AHM3/I, 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 P4SMA16AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA16AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA16AHM3/I Tags
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