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Vishay General Semiconductor - Diodes Division P4SMA30AHE3_A/I
- Part No.:
- P4SMA30AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA30AHE3_A/I.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,389
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Product details
Overview
P4SMA30AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor (TVS) designed for clamping inductive switching surges and lightning-induced transients on power and signal lines. It features a 30 V standoff voltage (VWM), 31.5 V maximum breakdown voltage (VBR), 41.4 V clamping voltage at 9.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P4SMA30AHE3_A/I datasheet, P4SMA30AHE3_A/I pinout, P4SMA30AHE3_A/I application, or P4SMA30AHE3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, SMA (DO-214AC) package compatibility, unidirectional polarity with cathode band marking, and thermal resistance (RθJA = 120 °C/W) under standard PCB pad layout.
Technical Context
The P4SMA30AHE3_A/I operates as a silicon avalanche diode with glass-passivated junction, delivering fast response (<1 ns) and low incremental surge resistance to limit transient overvoltage before sensitive downstream components are stressed. Its unidirectional configuration enables integration into DC-biased rails where reverse conduction must be blocked.
Rated for 150 °C maximum junction temperature and compliant with J-STD-020 MSL Level 1 (260 °C reflow peak), it supports automated SMT assembly and meets UL 497B recognition (QVGQ2) for surge protection devices. The device sustains 40 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits +0.097 %/°C temperature coefficient of VBR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 25.6 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 28.5–31.5 V at 1 mA - Avalanche onset range; ensures predictable turn-on during transients without premature conduction. |
| VC (Clamping Voltage) | 41.4 V at 9.7 A IPPM - Peak voltage seen by protected circuit during 10/1000 µs surge; determines stress level on downstream ICs. |
| PPPM (Peak Pulse Power) | 400 W - Energy-handling capacity for single 10/1000 µs transients; derates to 300 W above 91 V per spec. |
| ID (Reverse Leakage) | 1.0 µA at VWM - Minimal standby current; preserves efficiency in battery-powered or low-power sensor nodes. |
| TJ max. | 150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| RθJA | 120 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs heatsinking requirements for repetitive surge duty. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return in unidirectional TVS configuration; completes clamping loop during positive transients. |
| Cathode | Protected line connection / avalanche terminal | Connected to line being protected (e.g., 24 V rail); conducts avalanche current when voltage exceeds VBR, shunting surge to ground. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; supports under-hood and ADAS power rail protection. |
| Glass passivated junction | Enhances long-term stability and moisture resistance vs. epoxy-passivated alternatives; critical for field-deployed industrial sensors. |
| MSL Level 1 (260 °C) | Enables single-reflow assembly without prebaking; reduces manufacturing complexity and cost in high-volume SMT lines. |
| UL 497B recognized (QVGQ2) | Meets safety standards for telecom and industrial surge protectors; simplifies end-equipment certification for Class 2 circuits. |
| Low profile (max height 2.29 mm) | Reduces board space and mechanical interference in compact modules such as motor drivers and IoT edge nodes. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Guarding |
|---|---|
|
Use Scenario: Suppressing load-dump spikes (up to 40 V) and alternator transients on 24 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between power input and local regulator; activates within <1 ns to clamp voltage to ≤41.4 V. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and CAN transceivers during ISO 7637-2 Pulse 5a events. |
Use Scenario: Protecting analog outputs (e.g., 4–20 mA current loops) and digital I/O (e.g., RS-485) in PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal line with series impedance; clamps induced lightning surges (IEC 61000-4-5) before reaching isolators or ADC front-ends. Use Value: Maintains signal integrity by limiting transient overshoot to <41.4 V while adding <1 pF capacitance - negligible impact on 100 kHz bandwidth signals. |
| Consumer Appliance Motor Drive Protection | Telecom DC Power Input Stage |
|
Use Scenario: Safeguarding gate drivers and bootstrap circuits in BLDC motor inverters inside washing machines and HVAC fans subjected to inductive kickback. IC Role / Device Role / Timing Role: Mounted directly across DC bus or gate drive supply; absorbs 400 W pulses from MOSFET turn-off energy. Use Value: Eliminates need for external snubbers by providing repeatable clamping at 41.4 V, reducing BOM count and layout area. |
Use Scenario: Front-end surge suppression on -48 V telecom rectifier outputs feeding base station backplanes and fan controllers. IC Role / Device Role / Timing Role: Unidirectional TVS tied between -48 V rail and chassis ground; blocks reverse conduction while clamping positive surges. Use Value: Complies with GR-1089-CORE Level 3 (10/1000 µs, 1 kV) without derating - validated via Vishay's UL QVGQ2 listing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A-E3/52 (Vishay) | Same VWM/VBR/VC specs but SMB (DO-214AA) package - 2.6 mm wider, 0.3 mm taller; 30% higher RθJA (160 °C/W). | Less suitable for ultra-thin designs; requires larger pad layout; lower power density limits repetitive surge handling. | Select only if existing SMB footprint exists and thermal margin permits. |
| 1.5SMC33A (ON Semiconductor) | 33 V VWM, 36.7 V VBR, 53.3 V VC at 7.5 A; 1500 W PPPM but larger SMC (DO-214AB) package; no AEC-Q101 grade available. | Better for high-energy surges but incompatible with automotive qualification requirements; higher clamping increases IC stress. | Use only in non-automotive industrial applications where footprint and qualification are secondary to peak energy rating. |
Compared with SMBJ30A-E3/52 and 1.5SMC33A, the P4SMA30AHE3_A/I delivers optimal balance of AEC-Q101 compliance, low-profile SMA packaging, and precise 41.4 V clamping - making it the preferred choice for space-constrained, automotive-qualified 24 V system protection where thermal management and regulatory alignment are critical.
Availability
P4SMA30AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom DC input staging requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA30AHE3_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, precision, and application-specific optimization.
The P4SMA30AHE3_A/I belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in automotive, industrial, and telecom infrastructure - prioritizing AEC-Q101 qualification, low clamping ratio, and SMT manufacturability.
FAQ
What is the clamping voltage of the P4SMA30AHE3_A/I at its rated peak pulse current?
The P4SMA30AHE3_A/I has a maximum clamping voltage (VC) of 41.4 V at 9.7 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 transient events. The P4SMA30AHE3_A/I maintains this clamping performance across its qualified operating temperature range (-65 °C to +150 °C), with minimal drift due to its +0.097 %/°C VBR temperature coefficient.
Is the P4SMA30AHE3_A/I suitable for automotive applications?
Yes, the P4SMA30AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix and revision-coded "_A" grade. It undergoes stress testing per AEC-Q101 including HTGB, H3TRB, and temperature cycling, and is rated for operation from -65 °C to +150 °C junction temperature. The P4SMA30AHE3_A/I is commonly deployed in engine control units, body electronics, and ADAS power supplies where ISO 7637-2 compliance and long-term reliability are mandatory.
What does the "HE3_A/I" suffix mean in P4SMA30AHE3_A/I?
The "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification; "_A" specifies the revision grade applicable to P4SMA6.8A through P4SMA220A devices; and "/I" indicates packaging in 13-inch tape-and-reel format with 7500 units per reel. This ordering code ensures traceability to Vishay's qualified automotive production lot, full MSL Level 1 handling, and compliance with JESD201 Class 2 whisker resistance requirements - all confirmed in Document Number 88367, page 3.
How does the P4SMA30AHE3_A/I compare to bidirectional TVS diodes like P4SMA30CA?
The P4SMA30AHE3_A/I is unidirectional and features a cathode band for polarity identification, enabling use only on DC-biased lines where reverse conduction must be blocked. In contrast, P4SMA30CA is bidirectional with symmetrical clamping in both directions and no polarity marking. The P4SMA30AHE3_A/I offers tighter VBR tolerance (28.5–31.5 V) and lower clamping voltage (41.4 V) than P4SMA30CA (45.7 V), making it preferable for DC power rail protection where forward conduction is acceptable and reverse leakage must be minimized.
What is the thermal resistance and recommended pad layout for the P4SMA30AHE3_A/I?
The P4SMA30AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in Vishay Document 88367. This pad size is required to achieve rated 400 W peak pulse power; smaller pads increase RθJA and reduce surge capability. The device meets J-STD-020 MSL Level 1, allowing standard lead-free reflow without prebake - verified using the exact pad dimensions shown in the package outline drawing on page 5.
P4SMA30AHE3_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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 9.7A
- Power - Peak Pulse:
- 400W
- 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)
P4SMA30AHE3_A/I FAQ
1.How can I place an order for P4SMA30AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA30AHE3_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 P4SMA30AHE3_A/I reliable?
The price and inventory of P4SMA30AHE3_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 P4SMA30AHE3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA30AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA30AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA30AHE3_A/I?
P4SMA30AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA30AHE3_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 P4SMA30AHE3_A/I?
For technical support, including P4SMA30AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA30AHE3_A/I requirements.
6.How does Aetrix verify that P4SMA30AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA30AHE3_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 P4SMA30AHE3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA30AHE3_A/I?
All P4SMA30AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA30AHE3_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 P4SMA30AHE3_A/I part is unused and in its original packaging.
Return procedure for P4SMA30AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA30AHE3_A/I Tags
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