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Vishay General Semiconductor - Diodes Division P4SMA440AHE3_A/I
- Part No.:
- P4SMA440AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA440AHE3_A/I.pdf
- Description:
- TVS DIODE 376VWM 602VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,994
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Product details
Overview
P4SMA440AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 440 V standoff voltage (VWM), 462 V maximum breakdown voltage (VBR), and 602 V clamping voltage (VC) at 0.5 A peak pulse current (IPPM), designed to protect power rails and signal lines in high-voltage industrial power supplies and motor drive circuits.
For engineers reviewing the P4SMA440AHE3_A/I datasheet, P4SMA440AHE3_A/I pinout, P4SMA440AHE3_A/I application, or P4SMA440AHE3_A/I equivalent, this device delivers AEC-Q101 qualification, 400 W peak pulse power (10/1000 μs), low thermal resistance (RθJL = 30 °C/W), and UL 497B recognition - critical for automotive-grade surge protection design validation and high-reliability board-level ESD/transient immunity.
Technical Context
This unidirectional TVS operates with a cathode-band polarity marking, exhibits 0.50 A peak pulse current handling at 602 V clamping, and maintains stable clamping performance up to 150 °C junction temperature. Its glass-passivated junction ensures consistent avalanche behavior under repetitive transients.
The device complies with J-STD-020 MSL Level 1 (260 °C peak reflow), features matte tin-plated leads solderable per J-STD-002, and achieves 120 °C/W junction-to-ambient thermal resistance on standard PCB pads - enabling direct integration into space-constrained, thermally demanding layouts without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 440 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating ceiling for protected line. |
| VBR (Breakdown) | 418–462 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 602 V at IPPM = 0.5 A - Peak voltage seen by downstream circuitry during 10/1000 μs transient; limits stress on ICs/MOSFETs. |
| PPPM | 400 W (10/1000 μs) - Sustains single high-energy surges common in industrial switching environments. |
| RθJL | 30 °C/W - Low junction-to-lead thermal resistance enables efficient heat transfer to PCB copper, supporting reliability in sustained surge conditions. |
| TJ max. | 150 °C - Enables operation in under-hood automotive and high-temperature industrial enclosures without derating. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD HBM/MM. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads. Cathode identified by black band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; establishes reference for unidirectional clamping action. |
| Cathode | Avalanche conduction terminal | Marked with band; connects to higher-potential rail; conducts surge current to ground when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive powertrain and chassis applications requiring extended temperature cycling and robust surge endurance. |
| 400 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation in typical PCB layouts. |
| UL 497B Recognition (QVGQ2) | Meets safety standards for telecom and industrial signal line protectors; supports system-level certification. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking - simplifies SMT manufacturing flow. |
| Glass-passivated junction | Ensures stable leakage (<1 μA at VWM) and repeatable clamping across 1000+ surge cycles. |
Applications
| Industrial Motor Drives | Automotive Power Distribution Units |
|---|---|
|
Use Scenario: Protection of gate drivers and bus voltage sensing inputs against inductive kickback from 400–600 V DC bus switching. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between high-side MOSFET source and controller ground reference. Use Value: Limits transient overshoot to ≤602 V, preventing latch-up or oxide rupture in isolated gate drivers operating at 440 V nominal bus. |
Use Scenario: Surge suppression on 12 V/24 V auxiliary power rails feeding ADAS ECUs in engine bay environments. IC Role / Device Role / Timing Role: Primary overvoltage clamp on fused battery feed, upstream of LDOs and CAN transceivers. Use Value: Withstands ISO 7637-2 Pulse 5a (75 V/100 ms) and meets AEC-Q101 lifetime requirements under thermal cycling. |
| High-Voltage AC/DC Power Supplies | Telecom Line Interface Cards |
|
Use Scenario: Secondary-side overvoltage protection on +48 V or +54 V output rails in server PSUs and telecom rectifiers. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across bulk capacitor terminals to absorb load-dump energy. Use Value: Clamps 400 W surges within 1 ns response time while maintaining <1 μA leakage at 440 V, minimizing standby loss. |
Use Scenario: Primary protection for Ethernet PHY interfaces exposed to lightning-induced surges on outdoor PoE++ ports. IC Role / Device Role / Timing Role: First-stage unidirectional suppressor on DC bias line feeding active Ethernet magnetics. Use Value: UL 497B recognition enables compliance with GR-1089-CORE telecom safety standards for central office equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ440A-E3/52 (Vishay) | Same VWM/VBR/VC specs but SMB (DO-214AA) package - 2.5 mm wider, 0.3 mm taller; RθJA = 100 °C/W vs. 120 °C/W. | Better thermal dissipation on large copper areas; less suitable for ultra-dense layouts where SMA footprint is mandatory. | Select SMBJ440A-E3/52 when board layout allows larger pad area and higher continuous power handling is needed. |
| 1.5KE440A (ON Semiconductor) | Through-hole DO-201AE package; same 440 V VWM but higher VC = 645 V; 1500 W PPPM rating with 10/1000 μs waveform. | Designed for legacy through-hole systems or high-surge-test fixtures; not compatible with automated SMT assembly. | Choose 1.5KE440A only for prototyping or repair scenarios requiring through-hole mounting and higher single-pulse margin. |
Compared with SMBJ440A-E3/52 and 1.5KE440A, P4SMA440AHE3_A/I provides optimal balance of AEC-Q101 qualification, SMT compatibility, and compact SMA footprint - making it the preferred choice for new automotive and industrial designs where board space, reflow process control, and automotive reliability are jointly prioritized.
Availability
P4SMA440AHE3_A/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution units, high-voltage AC/DC power supplies, and telecom line interface cards requiring stable component supply, AEC-Q101 traceability, and UL-recognized surge protection.
Supply support for P4SMA440AHE3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets high-voltage transient suppression in automotive, industrial, and telecom systems - engineered for robustness under repetitive surge stress, tight parametric tolerances, and seamless SMT integration.
FAQ
What is the clamping voltage of P4SMA440AHE3_A/I at its rated peak pulse current?
The P4SMA440AHE3_A/I has a maximum clamping voltage (VC) of 602 V at 0.5 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is P4SMA440AHE3_A/I qualified for automotive applications?
Yes, P4SMA440AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and revision note indicating _B qualification for P4SMA250A–P4SMA540A variants. It undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TCT), and human-body-model ESD - meeting requirements for under-hood and chassis-mounted automotive electronics.
What does the "_A/I" suffix mean in P4SMA440AHE3_A/I?
The "_A/I" suffix in P4SMA440AHE3_A/I denotes the packaging configuration: "A" indicates AEC-Q101 qualification level for the P4SMA250A–P4SMA540A family, and "I" specifies 7500-unit quantity in 13-inch plastic tape-and-reel delivery mode. This matches Vishay's ordering information table where "I" corresponds to 7500-piece reels.
Can P4SMA440AHE3_A/I be used in bidirectional configurations?
No, P4SMA440AHE3_A/I is a unidirectional TVS diode, as indicated by the "A" (not "CA") suffix and absence of bidirectional VWM/VBR ranges in its electrical characteristics row. Bidirectional variants use "CA" suffixes (e.g., P4SMA440CA); using P4SMA440AHE3_A/I in reverse-biased AC applications would result in forward conduction and failure.
What is the thermal resistance from junction to lead (RθJL) for P4SMA440AHE3_A/I?
The P4SMA440AHE3_A/I has a typical junction-to-lead thermal resistance (RθJL) of 30 °C/W, per Vishay's Thermal Characteristics table in document 88367. This low value enables effective heat transfer from the silicon die to the PCB copper via the leads - essential for maintaining junction temperature below 150 °C during repetitive surge events in enclosed industrial enclosures.
P4SMA440AHE3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 602V
- Current - Peak Pulse (10/1000µs):
- 500mA
- 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)
P4SMA440AHE3_A/I FAQ
1.How can I place an order for P4SMA440AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA440AHE3_A/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 P4SMA440AHE3_A/I reliable?
The price and inventory of P4SMA440AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA440AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA440AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA440AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA440AHE3_A/I?
P4SMA440AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA440AHE3_A/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 P4SMA440AHE3_A/I?
For technical support, including P4SMA440AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA440AHE3_A/I requirements.
6.How does Aetrix verify that P4SMA440AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA440AHE3_A/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 P4SMA440AHE3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA440AHE3_A/I?
All P4SMA440AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA440AHE3_A/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 P4SMA440AHE3_A/I part is unused and in its original packaging.
Return procedure for P4SMA440AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA440AHE3_A/I Tags
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