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Vishay General Semiconductor - Diodes Division P4SMA250AHE3_A/H
- Part No.:
- P4SMA250AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA250AHE3_A/H.pdf
- Description:
- TVS DIODE 214VWM 344VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA250AHE3_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 at that current, serving as primary overvoltage protection for DC power rails and signal lines in automotive and industrial control modules.
For engineers reviewing the P4SMA250AHE3_A/H datasheet, P4SMA250AHE3_A/H pinout, P4SMA250AHE3_A/H application, or P4SMA250AHE3_A/H equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C maximum junction temperature, low thermal resistance (RθJL = 30 °C/W), and compatibility with automated SMT assembly on standard 0.2" × 0.2" copper pads.
Technical Context
This unidirectional TVS operates by avalanche breakdown above its specified VBR (237–263 V), providing fast clamping response (<1 ns) to transient surges while maintaining low leakage (<1 µA at 214 V). Its glass-passivated junction ensures stable performance under repeated surge stress and high humidity environments.
The device is rated for 400 W peak pulse power (10/1000 µs waveform) up to 25 °C, derating linearly above TA = 25 °C per Figure 2, with a maximum operating junction temperature of 150 °C and thermal resistance junction-to-lead of 30 °C/W - enabling reliable operation without external heatsinking in typical PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 214 V - Maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 237–263 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 344 V at IPPM = 0.87 A - Peak voltage seen by protected circuit during worst-case 10/1000 µs surge. |
| PPPM (Peak Pulse Power) | 400 W - Sustains single 10/1000 µs surge events without degradation when mounted on 5.0 mm × 5.0 mm copper pads. |
| TJ max. | 150 °C - Enables use in under-hood automotive ECUs and industrial motor drives with elevated ambient temperatures. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
| Package | SMA (DO-214AC) - Surface-mount package with matte tin-plated leads, MSL Level 1, compatible with lead-free reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with cathode band marking; dimensions 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to ground or lower-potential node in unidirectional TVS configuration. | Provides low-impedance path to ground during reverse transient events; polarity must match PCB silkscreen cathode band. |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line (e.g., 24 V rail or CAN_H). | Defines directionality: only conducts when protected line exceeds VBR relative to ground; incorrect orientation disables protection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensors requiring extended temperature and life-cycle reliability. |
| Glass-passivated junction | Ensures stable VBR and low leakage over time and humidity exposure, critical for long-life industrial deployments. |
| 400 W peak pulse rating (10/1000 µs) | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge events common in 24 V vehicle systems. |
| Low RθJL = 30 °C/W | Enables efficient heat transfer to PCB copper, supporting sustained operation near TJ max. without thermal runaway. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT processes without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control modules against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges exceeding 214 V. Use Value: Limits voltage to ≤344 V during 400 W pulses, preventing damage to downstream DC-DC converters and microcontrollers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation. IC Role / Device Role / Timing Role: TVS connected across signal and return lines to absorb ESD and switching noise from nearby solenoids. Use Value: Maintains signal integrity with <1 µA leakage at 214 V, avoiding offset errors in precision measurement circuits. |
| Telecom DC Feeder Protection | Renewable Energy Controller Interface |
Use Scenario: Safeguarding -48 V DC power feeds in base station remote radio units exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS installed at input connector to shunt energy before entering power management ICs. Use Value: Responds in <1 ns to clamp transients, meeting ITU-T K.20 immunity requirements for telecom infrastructure. |
Use Scenario: Protecting RS-485 communication ports on solar inverter controllers from ground potential differences. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; this unidirectional part used on VCC/GND pair for auxiliary power monitoring. Use Value: Withstands repetitive 300 W surges above 91 V per spec, supporting long-term deployment in outdoor PV enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ250A-E3/5A | Same VWM (214 V), identical SMA package, but rated for 400 W at 25 °C with higher IPPM (0.91 A) and slightly higher VC (348 V). | Designed for broader commercial/industrial use; lacks AEC-Q101 qualification and automotive traceability. | Select when automotive qualification is unnecessary and higher surge margin is prioritized over automotive compliance. |
| 1.5SMC250A | Higher package thermal mass (DO-214AB), same VWM/VBR, but lower RθJA (100 °C/W vs. 120 °C/W) and same 400 W rating. | Requires larger PCB footprint; better suited for high-reliability industrial power supplies where board space permits. | Choose when thermal performance under sustained surge duty cycles is critical and DO-214AB layout is acceptable. |
Compared with SMAJ250A-E3/5A and 1.5SMC250A, P4SMA250AHE3_A/H uniquely combines AEC-Q101 qualification, SMA footprint efficiency, and verified 150 °C junction capability - making it the preferred choice for space-constrained automotive modules requiring production traceability and extended temperature validation.
Availability
P4SMA250AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power systems requiring stable component supply, full AEC-Q101 documentation, and RoHS-compliant sourcing.
Supply support for P4SMA250AHE3_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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive yet high-reliability transient suppression needs in automotive, industrial, and telecom markets, delivering standardized TVS performance in compact surface-mount packages with rigorous qualification.
FAQ
What is the maximum clamping voltage of the P4SMA250AHE3_A/H at its rated peak pulse current?
The P4SMA250AHE3_A/H clamps to a maximum of 344 V when subjected to its rated peak pulse current of 0.87 A under the standard 10/1000 µs waveform condition. This value is measured at TA = 25 °C with the device mounted on 0.2" × 0.2" copper pads per JEDEC guidelines. The P4SMA250AHE3_A/H maintains this clamping performance across its qualified operating temperature range.
Is the P4SMA250AHE3_A/H suitable for automotive applications?
Yes, the P4SMA250AHE3_A/H is explicitly AEC-Q101 qualified, with test records covering temperature cycling, high-temperature reverse bias, and ESD per JESD22 standards. Its suffix "HE3" denotes RoHS-compliant and automotive-grade construction, and it is rated for operation from –65 °C to +150 °C - making the P4SMA250AHE3_A/H appropriate for under-hood and chassis-mounted automotive electronics.
What does the "_A/H" suffix indicate in P4SMA250AHE3_A/H?
The "_A/H" suffix in P4SMA250AHE3_A/H specifies packaging and revision: "A" denotes the revision level per Vishay's internal documentation, and "H" indicates 7-inch diameter plastic tape-and-reel delivery with 1800 units per reel. The "HE3" portion confirms RoHS compliance and AEC-Q101 qualification. This full ordering code ensures traceability and correct handling for automated SMT placement of the P4SMA250AHE3_A/H.
How does the thermal performance of the P4SMA250AHE3_A/H compare to larger-package TVS diodes?
The P4SMA250AHE3_A/H has a typical junction-to-lead thermal resistance (RθJL) of 30 °C/W and junction-to-ambient (RθJA) of 120 °C/W - optimized for its SMA (DO-214AC) footprint. While larger packages like DO-214AB offer lower RθJA, the P4SMA250AHE3_A/H achieves sufficient thermal dissipation for most automotive and industrial surge events when using recommended 5.0 mm × 5.0 mm copper pads, preserving board space without compromising reliability.
Can the P4SMA250AHE3_A/H be used in bidirectional configurations?
No, the P4SMA250AHE3_A/H is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA"). It conducts only when the cathode is positive relative to the anode beyond its breakdown voltage. For bidirectional protection, Vishay offers the P4SMA250CA variant; substituting the P4SMA250AHE3_A/H in a bidirectional circuit would result in improper clamping and potential failure.
P4SMA250AHE3_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:
- Obsolete
- 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:
- 300W
- 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)
P4SMA250AHE3_A/H FAQ
1.How can I place an order for P4SMA250AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA250AHE3_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 P4SMA250AHE3_A/H reliable?
The price and inventory of P4SMA250AHE3_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 P4SMA250AHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA250AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA250AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA250AHE3_A/H?
P4SMA250AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA250AHE3_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 P4SMA250AHE3_A/H?
For technical support, including P4SMA250AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA250AHE3_A/H requirements.
6.How does Aetrix verify that P4SMA250AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA250AHE3_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 P4SMA250AHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA250AHE3_A/H?
All P4SMA250AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA250AHE3_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 P4SMA250AHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA250AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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