My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA15A-E3/5A
- Part No.:
- P4SMA15A-E3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA15A-E3/5A.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,349
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA15A-E3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 12.8 V standoff voltage (VWM), 14.3–15.8 V breakdown voltage (VBR) at 1 mA, 21.2 V maximum clamping voltage (VC) at 18.9 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 industrial and automotive electronics.
For engineers reviewing the P4SMA15A-E3/5A datasheet, P4SMA15A-E3/5A pinout, P4SMA15A-E3/5A application, or P4SMA15A-E3/5A equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin terminals, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
The P4SMA15A-E3/5A operates as a unidirectional avalanche diode with glass-passivated junction, enabling fast response to transient overvoltage events. Its clamping behavior is defined by a 21.2 V VC at 18.9 A IPPM under 10/1000 µs waveform, with low incremental surge resistance ensuring minimal voltage overshoot during ESD or inductive switching events.
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, supporting operation from –65 °C to +150 °C. The device is rated for 3.3 W steady-state power dissipation at 50 °C ambient on infinite heatsink and withstands 40 A non-repetitive forward surge current (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 12.8 V - Maximum continuous reverse working voltage before conduction begins; sets operating margin below clamping threshold. |
| VBR (Breakdown) | 14.3–15.8 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering above normal operating voltage. |
| VC (Clamping) | 21.2 V at 18.9 A - Peak voltage seen by protected circuit during 10/1000 µs transient; defines protection window for downstream ICs. |
| PPPM | 400 W - Peak pulse power handling capability; enables robust suppression of IEC 61000-4-5 Level 3 surges. |
| IPPM | 18.9 A - Peak pulse current supported at VC; determines minimum trace width and layout derating for PCB design. |
| TJ max | +150 °C - Maximum junction temperature; allows use in under-hood automotive or high-ambient industrial environments. |
| Package | SMA (DO-214AC) - Standardized SMT outline with 5.0 mm × 5.0 mm copper pad requirement; supports automated pick-and-place. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional polarity with cathode band marking. Terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return plane; forms clamping loop with cathode. |
| Cathode | Transient voltage sensing and clamping node | Connected to protected line (e.g., VCC, signal); conducts when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity requirements up to 1 kV open-circuit test level. |
| Glass passivated chip junction | Ensures stable VBR and low leakage (<1 µA at VWM) across temperature and lifetime. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow without preconditioning; eliminates moisture-related popcorning risk. |
| AEC-Q101 qualified variant available | P4SMA15AHE3_A meets automotive-grade reliability for engine control, body electronics, and ADAS sensor protection. |
| Low profile and automated placement compatible | 0.208" × 0.157" footprint and 0.090" height enable high-density routing in space-constrained consumer and telecom modules. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control units against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground to clamp transients before reaching ADC input or op-amp buffer. Use Value: Limits voltage excursion to ≤21.2 V during 10/1000 µs surges, preserving signal integrity and preventing latch-up in 3.3 V or 5 V interface ICs. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: TVS connected across input terminal and common rail to shunt inductive kickback energy away from optocoupler or Schmitt trigger inputs. Use Value: Withstands 40 A surge current and clamps within 1 ns, preventing false triggering and long-term degradation of isolation barriers. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
|
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices or smart home hubs. IC Role / Device Role / Timing Role: Placed across DC output rails to absorb residual transients escaping primary-side MOV and Y-cap filtering. Use Value: 12.8 V VWM aligns with 12 V nominal output; 21.2 V VC stays below 24 V absolute maximum ratings of downstream PMICs and USB controllers. |
Use Scenario: Protecting Ethernet PHY or RS-485 transceivers from lightning-induced surges on outdoor cabling in security or building automation systems. IC Role / Device Role / Timing Role: Used in conjunction with common-mode chokes and GDTs in multi-stage protection schemes on data line pairs. Use Value: Low capacitance (<100 pF at VWM) avoids signal integrity loss at 100 Mbps; 400 W rating handles 10/700 µs telecom surge waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A (Bourns) | Same VWM (12.8 V), identical VC (21.2 V), but SMB package (DO-214AA) - 20 % larger footprint and 20 % higher RθJA (140 °C/W). | Less suitable for ultra-dense layouts; requires larger copper pads (0.25" × 0.25") for thermal performance. | Select when board space permits and legacy SMB footprint is standardized. |
| 1.5SMC15A (ON Semiconductor) | Identical electrical specs (VWM, VBR, VC, PPPM), but SMC (DO-214AB) package - 30 % larger than SMA and rated for 1500 W peak power (over-spec'd for same clamping). | Over-engineered for most 400 W applications; introduces unnecessary cost and board area penalty. | Prefer only if existing SMC-based designs require drop-in replacement without layout change. |
Compared with SMBJ15A and 1.5SMC15A, the P4SMA15A-E3/5A delivers optimal balance of compact SMA footprint, industry-standard thermal derating, and precise 400 W surge rating - making it ideal for new designs prioritizing miniaturization and cost efficiency without sacrificing protection margin.
Availability
P4SMA15A-E3/5A is available at Aetrix Electronics and suitable for industrial PLCs, automotive sensor modules, consumer power adapters, and telecom line interfaces requiring stable component supply and RoHS-compliant sourcing.
Supply support for P4SMA15A-E3/5A 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, TVS devices, and optoelectronics with emphasis on reliability, precision, and automotive qualification.
The P4SMA Series is engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping performance and AEC-Q101 readiness are critical.
FAQ
What is the maximum clamping voltage of the P4SMA15A-E3/5A under standard test conditions?
The P4SMA15A-E3/5A has a maximum clamping voltage (VC) of 21.2 V when subjected to an 18.9 A peak pulse current with a 10/1000 µs waveform at TA = 25 °C. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuits during transient events - critical for ensuring compatibility with 3.3 V, 5 V, or 12 V system rails. The P4SMA15A-E3/5A maintains this clamping performance across its full operating temperature range.
Is the P4SMA15A-E3/5A RoHS-compliant and suitable for lead-free reflow?
Yes, the P4SMA15A-E3/5A carries the "E3" suffix indicating RoHS-compliant construction and meets J-STD-020 MSL Level 1 requirements, with a maximum peak reflow temperature of 260 °C. Its matte tin-plated terminals are fully compatible with standard lead-free soldering processes, including single-pass reflow, and require no pre-baking. The P4SMA15A-E3/5A is certified per JEDEC JESD22-B102 for solderability and JESD201 Class 2 for whisker resistance.
How does the P4SMA15A-E3/5A differ from bidirectional variants like P4SMA15CA?
The P4SMA15A-E3/5A is unidirectional, meaning it conducts only in reverse bias above VBR, with polarity marked by a cathode band. In contrast, P4SMA15CA is bidirectional and symmetrical - conducting in both directions with identical VBR and VC characteristics. The P4SMA15A-E3/5A is selected for DC power rail or single-polarity signal line protection, while P4SMA15CA suits AC-coupled or differential bus applications like RS-485 or CAN where polarity reversal occurs.
What is the thermal resistance and power derating behavior of the P4SMA15A-E3/5A?
The P4SMA15A-E3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W. Its 3.3 W steady-state power dissipation is rated at TA = 50 °C on an infinite heatsink; above that, power must be linearly derated by 26.4 mW/°C. Derating curves per Figure 2 in the Vishay datasheet show 400 W pulse capability drops to ~280 W at TJ = 100 °C - essential for thermal design validation of the P4SMA15A-E3/5A in enclosed enclosures.
Can the P4SMA15A-E3/5A be used in automotive applications?
While the base P4SMA15A-E3/5A is commercial-grade, Vishay offers the AEC-Q101 qualified variant P4SMA15AHE3_A (with "HE3" suffix and revision code "A") for automotive use. This version undergoes stress testing per AEC-Q101 including HTOL, TC, and UHAST, and is approved for engine bay, body control, and ADAS sensor protection. The P4SMA15A-E3/5A itself is not AEC-Q101 certified, so automotive designs must specify the HE3 variant to meet OEM reliability requirements.
P4SMA15A-E3/5A 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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 18.9A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA15A-E3/5A FAQ
1.How can I place an order for P4SMA15A-E3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA15A-E3/5A 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 P4SMA15A-E3/5A reliable?
The price and inventory of P4SMA15A-E3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA15A-E3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA15A-E3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA15A-E3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA15A-E3/5A?
P4SMA15A-E3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA15A-E3/5A 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 P4SMA15A-E3/5A?
For technical support, including P4SMA15A-E3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA15A-E3/5A requirements.
6.How does Aetrix verify that P4SMA15A-E3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA15A-E3/5A 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 P4SMA15A-E3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA15A-E3/5A?
All P4SMA15A-E3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA15A-E3/5A, 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 P4SMA15A-E3/5A part is unused and in its original packaging.
Return procedure for P4SMA15A-E3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA15A-E3/5A 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
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 …
