My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA16AHM3/H
- Part No.:
- P4SMA16AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA16AHM3/H.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,554
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA16AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 16 V standoff voltage (VWM), 16.8 V maximum breakdown voltage (VBR), and 400 W peak pulse power (10/1000 µs). It provides clamping protection for ICs, MOSFETs, and sensor signal lines against inductive switching transients and ESD in automotive, industrial, and telecom systems.
For engineers reviewing the P4SMA16AHM3/H datasheet, P4SMA16AHM3/H pinout, P4SMA16AHM3/H application, or P4SMA16AHM3/H equivalent, this device is selected for robust overvoltage protection where AEC-Q101 qualification, low incremental surge resistance, and 22.5 V clamping voltage at 17.8 A peak pulse current are critical design requirements.
Technical Context
The P4SMA16AHM3/H operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response time (<1 ns) and stable clamping under repetitive 10/1000 µs transients. Its thermal resistance (RθJA = 120 °C/W) and 150 °C max junction temperature support operation in compact PCB layouts with minimal copper area.
Designed for automated SMT placement, it features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets MSL Level 1 (260 °C peak reflow). The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 13.6 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown) | 15.2–16.8 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on during transient events. |
| VC (Clamping) | 22.5 V at 17.8 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; enables downstream component survival. |
| PPPM | 400 W - Peak pulse power handling capability; supports high-energy transients without failure when mounted on 5.0 mm × 5.0 mm copper pads. |
| ID (Leakage) | 1.0 µA max at 13.6 V - Ultra-low reverse leakage preserves signal integrity and power efficiency in standby conditions. |
| TJ max | 150 °C - Maximum junction temperature rating; allows operation in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test standard; required for engine control, ADAS, and body electronics. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with UL 94 V-0 flammability rating. Cathode indicated by band on body; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground during overvoltage event. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including powertrain and chassis modules requiring long-term reliability under thermal cycling and vibration. |
| 400 W peak pulse power | Enables protection against IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) without derating in standard PCB layouts. |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to moisture-induced parameter drift in humid environments. |
| MSL Level 1 rating | Allows direct placement into standard reflow profiles up to 260 °C peak without pre-baking or special handling. |
| Halogen-free & RoHS | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life compliance. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver pins from load dump and alternator ripple transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between signal line and chassis ground. Use Value: Limits induced voltage to ≤22.5 V during 400 W surges, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. |
Use Scenario: Shields 24 V DC digital input circuits from relay coil flyback and field wiring ESD in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff protector on input terminal block, upstream of optocoupler isolation stage. Use Value: Withstands 17.8 A transient pulses while maintaining <1 µA leakage at 13.6 V, preserving input threshold accuracy and noise immunity. |
| Telecom Base Station Power Supply | Consumer Smart Meter Sensor Interface |
Use Scenario: Guards DC-DC converter feedback resistors and voltage sense lines against lightning-induced surges on -48 V telecom power rails. IC Role / Device Role / Timing Role: Secondary-level transient suppressor after primary MOV stage, providing precise clamping near IC tolerance limits. Use Value: 22.5 V clamping voltage aligns with ±10 % tolerance of 24 V auxiliary supplies, avoiding false triggering of undervoltage lockout. |
Use Scenario: Safeguards analog front-end ADC inputs connected to current transformers and temperature sensors exposed to HVAC motor switching noise. IC Role / Device Role / Timing Role: Low-capacitance (typ. 100 pF at 0 V) shunt protector on differential sensor traces. Use Value: 1.0 µA leakage at 13.6 V prevents DC offset error in µA-level sensor bias currents, maintaining sub-0.1 % measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/5A | Same VWM (13.6 V), lower PPPM (400 W), but non-AEC-Q101; RθJA = 125 °C/W vs. 120 °C/W. | Commercial-grade only; not approved for automotive under-hood use. | Select when AEC-Q101 is not required and cost sensitivity outweighs automotive qualification. |
| 1.5SMC16A | Higher package thermal mass (DO-214AB); same VWM/VBR but 1.5 kW PPPM rating; larger footprint (7.11 mm × 6.22 mm vs. 4.93 mm × 3.99 mm). | Used where higher single-pulse energy absorption is needed, e.g., AC mains input stages. | Choose for legacy designs using SMC package or where board space permits larger footprint for enhanced surge margin. |
Compared with SMAJ16A-E3/5A and 1.5SMC16A, the P4SMA16AHM3/H uniquely combines AEC-Q101 qualification, SMA footprint compactness, and verified 400 W performance in automotive-qualified halogen-free construction-making it optimal for space-constrained, safety-critical vehicle subsystems.
Availability
P4SMA16AHM3/H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input conditioning, and telecom power rail safeguarding requiring stable component supply across multi-year production cycles.
Supply support for P4SMA16AHM3/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, and protection devices with emphasis on reliability, precision, and application-specific validation.
The P4SMA series targets high-reliability transient suppression in automotive, industrial, and telecom infrastructure, designed to replace older SMAJ and P6SMB families with improved thermal performance and AEC-Q101 compliance.
FAQ
What is the clamping voltage of the P4SMA16AHM3/H under a 10/1000 µs surge?
The P4SMA16AHM3/H has a maximum clamping voltage (VC) of 22.5 V at 17.8 A peak pulse current with a 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and reflects the actual voltage imposed on the protected circuit during standardized surge testing. The P4SMA16AHM3/H maintains this clamping performance across its full operating temperature range when mounted per recommended pad layout.
Is the P4SMA16AHM3/H suitable for automotive applications?
Yes, the P4SMA16AHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is explicitly validated for use in engine control units, body electronics, and ADAS modules where reliability under thermal cycling, vibration, and high-energy transients is mandatory. The P4SMA16AHM3/H meets all stress tests defined in AEC-Q101 Rev D.
What does the "HM3" suffix mean in P4SMA16AHM3/H?
The "HM3" suffix in P4SMA16AHM3/H denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction per Vishay's ordering nomenclature. The "H" indicates 7-inch tape-and-reel packaging (1800 units per reel), and "M3" specifies the halogen-free material set. This distinguishes it from commercial-grade variants like E3 or M3 without AEC-Q101 validation. The P4SMA16AHM3/H is fully traceable to Vishay's automotive production line.
How does the P4SMA16AHM3/H compare to the P4SMA16AHE3/H variant?
The P4SMA16AHM3/H and P4SMA16AHE3/H share identical electrical specifications (VWM, VBR, VC, PPPM) and mechanical form factor, but differ in material composition: HM3 is halogen-free while HE3 is standard RoHS-compliant. Both are AEC-Q101 qualified. The P4SMA16AHM3/H is preferred where halogen-free compliance is mandated by OEM environmental policies or regional regulations such as China RoHS II.
What is the maximum junction temperature rating for the P4SMA16AHM3/H?
The P4SMA16AHM3/H has a maximum junction temperature (TJ max) of +150 °C, as specified in the Vishay P4SMA Series datasheet (Document Number 88367, page 2). This rating enables reliable operation in under-hood automotive environments and sealed industrial enclosures. Derating curves in Figure 2 confirm usable power dissipation down to ambient temperatures of +125 °C when mounted per recommended thermal pad layout.
P4SMA16AHM3/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:
- 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/H FAQ
1.How can I place an order for P4SMA16AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA16AHM3/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 P4SMA16AHM3/H reliable?
The price and inventory of P4SMA16AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA16AHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA16AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA16AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA16AHM3/H?
P4SMA16AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA16AHM3/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 P4SMA16AHM3/H?
For technical support, including P4SMA16AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA16AHM3/H requirements.
6.How does Aetrix verify that P4SMA16AHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA16AHM3/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 P4SMA16AHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA16AHM3/H?
All P4SMA16AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA16AHM3/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 P4SMA16AHM3/H part is unused and in its original packaging.
Return procedure for P4SMA16AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA16AHM3/H Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
