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Vishay General Semiconductor - Diodes Division P4SMA250AHM3_A/H
- Part No.:
- P4SMA250AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA250AHM3_A/H.pdf
- Description:
- TVS DIODE 214VWM 344VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,037
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Product details
Overview
P4SMA250AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 250 V standoff voltage (VWM), 263 V minimum breakdown voltage (VBR), and 400 W peak pulse power (10/1000 µs). It delivers 0.87 A peak pulse current (IPPM) and clamps transients to 344 V (VC), targeting high-voltage industrial power supply rail protection.
For engineers reviewing the P4SMA250AHM3_A/H datasheet, P4SMA250AHM3_A/H pinout, P4SMA250AHM3_A/H application, or P4SMA250AHM3_A/H equivalent, key selection criteria include its AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, MSL Level 1 rating, and 150 °C maximum junction temperature - critical for automotive-grade power conditioning and ruggedized industrial interfaces.
Technical Context
This device operates as a unidirectional clamping TVS: reverse-biased during normal operation with <1.0 µA leakage at 214 V (VWM), then rapidly avalanches above 263 V (VBR) to limit transient overvoltage. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for 10/1000 µs waveform immunity, it sustains 400 W peak pulse power at TA = 25 °C (derated above 25 °C per Fig. 2), with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W - requiring minimal copper pad area (0.2" × 0.2") for reliable energy dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 214 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin. |
| VBR (Breakdown Voltage) | 237–263 V at 1.0 mA - Confirmed avalanche initiation range; ensures predictable turn-on under surge conditions. |
| VC (Clamping Voltage) | 344 V at IPPM - Peak voltage seen by protected circuit during 0.87 A transient; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - Energy-handling capacity for standard lightning/surge waveforms; derates linearly above 25 °C. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Ultra-low leakage preserves system efficiency and avoids false triggering in high-impedance nodes. |
| TJ max | 150 °C - Enables operation in under-hood automotive or enclosed industrial enclosures without active cooling. |
| AEC-Q101 Qualified | Yes (HM3 suffix) - Validated for automotive electronics per stress-test requirements including temperature cycling and HTRB. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when voltage exceeds VBR. |
| Anode (unbanded end) | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping current path. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) on 214 V rails without failure. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive power modules, battery management systems, and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A Tier 1 reporting requirements for green manufacturing. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking or moisture sensitivity handling. |
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift in harsh environments. |
Applications
| Industrial Motor Drive DC Bus Protection | Automotive On-Board Charger (OBC) Input Stage |
|---|---|
Use Scenario: Suppresses switching transients and load dump spikes on 200–300 V DC bus lines in variable-frequency drives and servo amplifiers. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between DC+ and chassis ground, responding within <1 ns to limit voltage overshoot. Use Value: Prevents gate oxide damage to 600 V IGBTs and SiC MOSFETs by clamping to ≤344 V during 400 W surges. |
Use Scenario: Protects AC/DC front-end rectifier and PFC stage against ISO 7637-2 Load Dump pulses (up to 60 V superimposed on 14 V nominal). IC Role / Device Role / Timing Role: High-VWM TVS installed across bulk capacitor input to absorb 120 ms, 35 V transients without thermal runaway. Use Value: Maintains system uptime by surviving repeated load dump events while meeting AEC-Q101 reliability requirements. |
| Telecom Power Feeding Interface | Rail-to-Rail Surge Protection in EV Charging Stations |
Use Scenario: Shields PoE++ (IEEE 802.3bt Type 4) power sourcing equipment from induced surges on 57 V DC feed lines. IC Role / Device Role / Timing Role: Standoff-rated TVS placed at Ethernet transformer secondary to protect controller ICs and isolation barriers. Use Value: Provides 214 V standoff headroom above 57 V operating rail, enabling robust protection without false triggering. |
Use Scenario: Clamps fast-rising transients on 400–800 V DC charging rails caused by cable disconnect/arcing or grid switching noise. IC Role / Device Role / Timing Role: Primary-level unidirectional suppressor mounted directly at DC input connector, shunting surge energy to ground plane. Use Value: Achieves 344 V clamping at 250 V nominal rail - critical for preserving insulation coordination in Class II EVSE designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ250AHE3/A | Same VWM (214 V), VBR (237–263 V), VC (344 V); identical SMA package but E3 suffix (non-AEC-Q101, non-halogen-free). | Lacks AEC-Q101 qualification and halogen-free certification; suitable only for commercial/industrial, not automotive. | Select SMAJ250AHE3/A only if AEC-Q101 and halogen-free compliance are not required. |
| SMCJ250A-Q | Higher PPPM (1500 W), larger SMC (DO-214AB) package; same electrical ratings but 3× footprint and 5× thermal mass. | Requires PCB layout change; better suited for higher-energy surges where 400 W is insufficient. | Choose SMCJ250A-Q only when surge energy exceeds P4SMA250AHM3_A/H capability and board space allows SMC package. |
Compared with SMAJ250AHE3/A, P4SMA250AHM3_A/H adds AEC-Q101 and halogen-free compliance without sacrificing electrical performance; versus SMCJ250A-Q, it trades surge capacity for compactness and automated assembly compatibility - making it optimal for space-constrained, automotive-qualified 214 V rail protection.
Availability
P4SMA250AHM3_A/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive on-board chargers, telecom power feeding interfaces, and EV charging station DC rail protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA250AHM3_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, and protection devices with emphasis on reliability, power efficiency, and automotive-grade validation.
The P4SMA Series targets high-reliability transient suppression in space-constrained, high-voltage applications - designed specifically for automotive, industrial, and telecom systems needing AEC-Q101-qualified, halogen-free TVS solutions in SMA packages.
FAQ
What is the clamping voltage of the P4SMA250AHM3_A/H under peak pulse conditions?
The P4SMA250AHM3_A/H has a maximum clamping voltage (VC) of 344 V at its rated peak pulse current (IPPM) of 0.87 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during transient events. The P4SMA250AHM3_A/H maintains this clamping performance while sustaining 400 W peak pulse power at 25 °C ambient.
Is the P4SMA250AHM3_A/H qualified for automotive applications?
Yes, the P4SMA250AHM3_A/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's P4SMA series datasheet (Rev. 09-Jan-2024, Doc. #88367). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing - validating its use in automotive power electronics such as on-board chargers and battery management systems. The P4SMA250AHM3_A/H meets these requirements while retaining full RoHS and halogen-free compliance.
What is the standoff voltage rating of the P4SMA250AHM3_A/H?
The P4SMA250AHM3_A/H has a maximum working peak reverse voltage (VWM) of 214 V, meaning it remains in high-impedance blocking mode up to this DC or repetitive AC voltage level. This 214 V rating provides a 36 V margin below its minimum breakdown voltage (237 V), ensuring stable operation without leakage-induced heating or premature conduction. The P4SMA250AHM3_A/H is therefore suitable for protecting 200 V-class DC rails in industrial and automotive systems.
Does the P4SMA250AHM3_A/H have a bidirectional variant?
No, the P4SMA250AHM3_A/H is strictly unidirectional, as indicated by its "A" suffix and absence of "CA" in the part number. Bidirectional variants in the P4SMA family use the "CA" suffix (e.g., P4SMA250CA), but no CA version is specified for the 250 V rating in the official Vishay documentation. The P4SMA250AHM3_A/H features a cathode band for polarity identification and must be oriented correctly in-circuit to function as a reverse-biased clamp.
What package type does the P4SMA250AHM3_A/H use, and what are its mounting requirements?
The P4SMA250AHM3_A/H uses the SMA (DO-214AC) surface-mount package - a low-profile, two-terminal case with dimensions of 4.93 mm × 3.99 mm × 2.29 mm. It requires standard reflow soldering per J-STD-020 MSL Level 1 (peak 260 °C) and performs optimally when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to meet its 400 W pulse rating. The P4SMA250AHM3_A/H's matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for reliable solder joint formation.
P4SMA250AHM3_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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 214V
- Voltage - Breakdown (Min):
- 237V
- Voltage - Clamping (Max) @ Ipp:
- 344V
- Current - Peak Pulse (10/1000µs):
- 870mA
- 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)
P4SMA250AHM3_A/H FAQ
1.How can I place an order for P4SMA250AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA250AHM3_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 P4SMA250AHM3_A/H reliable?
The price and inventory of P4SMA250AHM3_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 P4SMA250AHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA250AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA250AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA250AHM3_A/H?
P4SMA250AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA250AHM3_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 P4SMA250AHM3_A/H?
For technical support, including P4SMA250AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA250AHM3_A/H requirements.
6.How does Aetrix verify that P4SMA250AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA250AHM3_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 P4SMA250AHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA250AHM3_A/H?
All P4SMA250AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA250AHM3_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 P4SMA250AHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA250AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA250AHM3_A/H Tags
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