My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA220AHM3/I
- Part No.:
- P4SMA220AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA220AHM3/I.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,891
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA220AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 220 V standoff voltage (VWM), 231 V minimum breakdown voltage (VBR), and 328 V maximum clamping voltage (VC) at 0.91 A peak pulse current (IPPM) under 10/1000 µs waveform. It delivers 400 W peak pulse power capability and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the P4SMA220AHM3/I datasheet, P4SMA220AHM3/I pinout, P4SMA220AHM3/I application, or P4SMA220AHM3/I equivalent, this device is selected for robust overvoltage protection of high-voltage DC rails, automotive power modules, and industrial sensor interfaces where fast response (<1 ns), low clamping ratio, and halogen-free RoHS compliance are required.
Technical Context
The P4SMA220AHM3/I operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold (209–231 V), with cathode band marking polarity. Its glass-passivated junction ensures stable leakage performance and long-term reliability under repetitive surge stress.
Designed for 10/1000 µs surge waveforms per IEC 61000-4-5, it achieves 328 V clamping at 0.91 A IPPM and maintains <1.0 µA reverse leakage at 185 V (VWM = 220 V), supporting high-impedance sensing nodes and low-power microcontroller I/O protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 220 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin for 24 V–48 V systems scaled to high-voltage domains. |
| VBR (Breakdown Voltage) | 209–231 V at 1 mA - Tight 5% tolerance ensures predictable turn-on across temperature and production lots for consistent protection thresholds. |
| VC (Clamping Voltage) | 328 V at IPPM = 0.91 A - Limits transient energy delivered to downstream circuitry; clamping ratio VC/VBR ≈ 1.47 supports robust MOSFET gate and MCU I/O survivability. |
| PPPM (Peak Pulse Power) | 400 W - Sustains single 10/1000 µs surges up to 400 W on standard 0.2" × 0.2" copper pads; derates to 300 W above 91 V per spec. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Enables use in high-impedance signal paths without loading effects; critical for precision analog sensor front-ends. |
| TJ max | 150 °C - Supports operation in under-hood automotive environments and enclosed industrial enclosures without thermal derating penalties. |
| Package | SMA (DO-214AC) - Surface-mount footprint compatible with automated assembly; meets UL 94 V-0 flammability and J-STD-020 MSL Level 1 (260 °C peak). |
Pinout & Package
SMA (DO-214AC) package: molded epoxy case with matte tin-plated leads, cathode indicated by a band on the body. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); recommended pad layout per Vishay spec: 1.88 mm wide × 5.28 mm long copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / low-side reference | Connected to system ground or low-voltage return; establishes reference for clamping action during positive transients on cathode side. |
| Cathode | Protected line input / high-side connection | Connected to the line being protected (e.g., 220 V DC bus); conducts avalanche current to anode when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock-enables use in ADAS power supplies and body control modules. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU Directive 2011/65/EU and JEDEC J-STD-20; eliminates brominated flame retardants for safer end-of-life processing and reduced environmental impact. |
| Glass passivated junction | Provides stable electrical characteristics over time and temperature; prevents moisture ingress and metallization degradation in humid industrial environments. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving protection margin for sensitive SiC/GaN gate drivers. |
Applications
| Automotive Power Rail Protection | Industrial DC Link Surge Suppression |
|---|---|
|
Use Scenario: Protecting 220 V DC battery management system (BMS) inputs against load dump and alternator switching transients in 48 V mild-hybrid vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between HV+ and chassis ground; clamps transients within nanoseconds to prevent MOSFET drain-source breakdown. Use Value: With 328 V clamping at 0.91 A and 150 °C TJ max, P4SMA220AHM3/I ensures BMS controller uptime during repeated 100 V/100 ms surges per ISO 16750-2. |
Use Scenario: Safeguarding IGBT gate driver supply rails in variable-frequency drives exposed to inductive kickback from 3-phase motor windings. IC Role / Device Role / Timing Role: Mounted directly at gate driver IC input; absorbs 10/1000 µs spikes induced by parasitic inductance in high-di/dt switching events. Use Value: 400 W peak power rating and 1.0 µA leakage enable reliable protection without compromising gate drive integrity or introducing noise into PWM timing paths. |
| Telecom Rectifier Output Clamping | High-Voltage Sensor Interface Protection |
|
Use Scenario: Clamping output of 220 V telecom rectifier modules subjected to lightning-induced surges on AC input lines coupled through transformer parasitics. IC Role / Device Role / Timing Role: Placed across rectifier output capacitor; shunts surge energy away from downstream DC-DC converters and monitoring ICs. Use Value: 220 V VWM allows full utilization of rectifier output headroom while 328 V VC limits stress on 350 V-rated electrolytic capacitors and 300 V MOSFETs. |
Use Scenario: Protecting isolated voltage dividers and ADC inputs measuring 220 V DC bus voltage in solar inverters and EV chargers. IC Role / Device Role / Timing Role: Connected between sense node and ground; clamps ESD and fast transients before they reach precision resistive divider networks. Use Value: Sub-µA leakage at 220 V ensures measurement accuracy remains unaffected; glass passivation guarantees long-term stability of voltage scaling ratios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220A | Same VWM (220 V), but lower PPPM (400 W vs. 400 W), higher VC (356 V), and no AEC-Q101 qualification; SMA package identical. | Commercial-grade only; not suitable for automotive OEM designs requiring AEC-Q101 traceability and test reports. | Select P4SMA220AHM3/I when AEC-Q101 compliance, halogen-free construction, and tighter VC are mandatory. |
| 1.5SMC220A | Higher power rating (1500 W), larger SMC (DO-214AB) package, same VWM/VC specs; not pin-compatible with SMA footprint. | Requires PCB redesign due to 7.11 mm × 6.22 mm SMC footprint versus 4.93 mm × 3.99 mm SMA; suited for higher-energy surge environments. | Choose P4SMA220AHM3/I for space-constrained automotive modules where 400 W suffices and automated placement on fine-pitch boards is required. |
Compared with SMAJ220A and 1.5SMC220A, P4SMA220AHM3/I uniquely combines AEC-Q101 qualification, halogen-free materials, and SMA package compatibility-making it the preferred choice for automotive and industrial designs demanding certified reliability without board rework.
Availability
P4SMA220AHM3/I is available at Aetrix Electronics and suitable for automotive power systems, industrial motor drives, telecom rectifiers, and high-voltage sensor interfaces requiring stable component supply, long-lifecycle support, and AEC-Q101 traceability.
Supply support for P4SMA220AHM3/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 is engineered for surface-mount transient suppression in automotive, industrial, and telecom systems-designed to replace axial-leaded TVS diodes with automated-assembly-ready packages and AEC-Q101 validation.
FAQ
What is the clamping voltage of P4SMA220AHM3/I at its rated peak pulse current?
The P4SMA220AHM3/I has a maximum clamping voltage (VC) of 328 V at its specified peak pulse current (IPPM) of 0.91 A under the 10/1000 µs waveform condition. This value is measured per Figure 1 in the Vishay datasheet (Document Number: 88367, Rev. 09-Jan-2024) and reflects the actual voltage seen by protected circuitry during a standardized surge event. The clamping performance is guaranteed across the full operating temperature range and forms the basis for downstream component voltage rating selection in designs using P4SMA220AHM3/I.
Is P4SMA220AHM3/I suitable for automotive applications?
Yes, P4SMA220AHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It meets stress tests including temperature cycling, highly accelerated life testing (HALT), and mechanical shock per AEC-Q101 Rev D. The device is explicitly listed in Vishay's automotive ordering codes table for the P4SMA series and is deployed in body control modules, battery disconnect units, and 48 V DC-DC converter inputs where P4SMA220AHM3/I provides certified transient immunity.
What does the "HM3" suffix mean in P4SMA220AHM3/I?
The "HM3" suffix in P4SMA220AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Per Vishay's ordering information (Document 88367, page 3), HM3 indicates the device uses molding compounds free of brominated and chlorinated flame retardants, complies with EU RoHS Directive 2011/65/EU, and has passed all AEC-Q101 stress tests. The "I" denotes 7500-unit tape-and-reel packaging on 13-inch reels-distinct from "H" (1800-unit 7-inch reels). This makes P4SMA220AHM3/I suitable for high-reliability, environmentally regulated production.
How does P4SMA220AHM3/I differ from bidirectional TVS diodes like P4SMA220CA?
P4SMA220AHM3/I is unidirectional, meaning it conducts only in reverse bias above its breakdown voltage (209–231 V), with polarity marked by a cathode band. In contrast, P4SMA220CA is bidirectional and symmetrical-clamping both positive and negative transients equally around 0 V, with no polarity marking. P4SMA220AHM3/I is used where DC polarity is fixed (e.g., 220 V DC bus protection), while P4SMA220CA suits AC-coupled or floating signal lines. Their VWM, VBR, and VC values differ accordingly: P4SMA220AHM3/I has VWM = 220 V, whereas P4SMA220CA has VWM = 185 V.
What is the thermal resistance of P4SMA220AHM3/I, and how does it affect power handling?
P4SMA220AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value determines steady-state power dissipation limits: at TA = 50 °C, its continuous power rating (PD) is 3.3 W. For transient events, thermal mass dominates, allowing 400 W peak pulses-but sustained surges require careful thermal design. RθJA directly impacts junction temperature rise; exceeding 150 °C TJ risks parametric shift or failure, so P4SMA220AHM3/I must be placed on adequate copper area in high-duty-cycle applications.
P4SMA220AHM3/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):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 910mA
- 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)
P4SMA220AHM3/I FAQ
1.How can I place an order for P4SMA220AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA220AHM3/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 P4SMA220AHM3/I reliable?
The price and inventory of P4SMA220AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA220AHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA220AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA220AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA220AHM3/I?
P4SMA220AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA220AHM3/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 P4SMA220AHM3/I?
For technical support, including P4SMA220AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA220AHM3/I requirements.
6.How does Aetrix verify that P4SMA220AHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA220AHM3/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 P4SMA220AHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA220AHM3/I?
All P4SMA220AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA220AHM3/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 P4SMA220AHM3/I part is unused and in its original packaging.
Return procedure for P4SMA220AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA220AHM3/I 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
