My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA18CA-E3/61
- Part No.:
- P4SMA18CA-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA18CA-E3/61.pdf
- Description:
- TVS DIODE 15.3VWM 25.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,205
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA18CA-E3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P4SMA series, designed for clamping voltage transients on signal or power lines. It features a 15.3 V standoff voltage (VWM), 17.1–18.9 V breakdown voltage (VBR) at 1 mA, 25.2 V maximum clamping voltage (VC) at 15.9 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P4SMA18CA-E3/61 datasheet, P4SMA18CA-E3/61 pinout, P4SMA18CA-E3/61 application, or P4SMA18CA-E3/61 equivalent, key selection criteria include bidirectional clamping capability, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), and compliance with UL 497B surge protector classification.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering consistent clamping performance without polarity dependency. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance enables rapid energy diversion during transient events.
The device meets MSL Level 1 per J-STD-020 with a 260 °C reflow peak temperature tolerance and supports automated SMT placement. It is rated for -65 °C to +150 °C operating junction temperature and delivers 400 W peak pulse power up to 91 V - derated to 300 W above that threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 15.3 V - Maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 17.1–18.9 V at 1 mA - Confirmed breakdown range where device transitions into avalanche conduction; ensures predictable turn-on behavior. |
| VC (Clamping Voltage) | 25.2 V at 15.9 A IPPM - Peak voltage seen across terminals during 10/1000 µs transient; determines maximum stress imposed on protected circuitry. |
| PPPM (Peak Pulse Power) | 400 W - Energy-handling capacity under standard 10/1000 µs waveform; sufficient for IEC 61000-4-5 Level 3 surges. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs board-level thermal design requirements. |
| Package | SMA (DO-214AC) - Surface-mount outline with 2.54 mm lead pitch; compatible with standard SMT pick-and-place and reflow processes. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking - symmetrical terminal arrangement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically in either polarity; no cathode band marking required for bidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power (10/1000 µs) | Supports robust immunity against lightning-induced surges and inductive switching transients in industrial environments. |
| UL 497B recognized (QVGQ2) | Meets Underwriters Laboratories requirements for telecom and data line surge protectors - simplifies system-level safety certification. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking - reduces manufacturing overhead and handling risk. |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage current under thermal and humidity stress. |
Applications
| Industrial Sensor Interfaces | Automotive Body Control Modules |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., temperature, pressure) from ESD and load-dump transients in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point before signal conditioning circuitry. Use Value: Limits induced voltage to ≤25.2 V during 15.9 A transients, preventing damage to 3.3 V or 5 V ADC inputs and op-amp front-ends. |
Use Scenario: Safeguarding LIN bus communication lines in door modules and seat controllers against battery reverse connection and jump-start spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bidirectional data line, co-located with bus transceiver. Use Value: Maintains signal integrity under 10/1000 µs surges up to 400 W while meeting AEC-Q101 automotive qualification requirements. |
| Telecom Data Line Protection | Consumer Power Adapter Inputs |
Use Scenario: Shielding Ethernet PHY interfaces and PoE injectors from induced surges on unshielded twisted-pair cabling. IC Role / Device Role / Timing Role: Secondary-level transient suppressor downstream of gas discharge tube (GDT) primary protection. Use Value: Clamps residual transients to 25.2 V within nanoseconds, preserving PHY IC reliability without adding signal distortion. |
Use Scenario: Input-stage surge suppression in AC-DC adapters for smart home devices exposed to mains-borne transients. IC Role / Device Role / Timing Role: Fast-response clamping device across bridge rectifier output or bulk capacitor input. Use Value: Absorbs 400 W pulses without degradation, enabling compact adapter designs compliant with IEC 61000-4-5 Level 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18CA | Same VWM (15.3 V), higher PPPM (600 W), larger SMB (DO-214AA) package (4.58 mm width vs. 2.79 mm). | Requires more PCB area; better suited for higher-energy surges where space permits. | Select when 600 W pulse handling is needed and board layout allows wider footprint. |
| 1.5KE18CA | Same VWM and VC, but through-hole DO-15 package; 1500 W peak power rating. | Not SMT-compatible; intended for prototyping or high-reliability through-hole assemblies. | Choose only if through-hole mounting is mandatory and manual assembly is acceptable. |
Compared with SMBJ18CA and 1.5KE18CA, P4SMA18CA-E3/61 offers optimal balance of 400 W surge capability, ultra-compact SMA footprint, and AEC-Q101 qualification - making it preferred for space-constrained automotive and industrial SMT designs requiring certified reliability.
Availability
P4SMA18CA-E3/61 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, telecom data line protection, and consumer power adapter inputs requiring stable component supply and RoHS-compliant sourcing.
Supply support for P4SMA18CA-E3/61 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 and application-specific performance.
The P4SMA series is engineered for high-volume surface-mount transient suppression in automotive, industrial, and telecom systems - prioritizing low-profile packaging, AEC-Q101 qualification, and UL recognition for system-level safety compliance.
FAQ
What is the clamping voltage of P4SMA18CA-E3/61 at its rated peak pulse current?
The P4SMA18CA-E3/61 has a maximum clamping voltage (VC) of 25.2 V at 15.9 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and defines the upper voltage limit imposed on protected circuitry during transient events.
Is P4SMA18CA-E3/61 qualified for automotive applications?
Yes, P4SMA18CA-E3/61 is AEC-Q101 qualified - confirmed in the Vishay P4SMA series datasheet revision 09-Jan-2024. The "HE3" and "HM3" suffix variants are explicitly designated for automotive use; however, the E3/61 variant shares the same die and qualification baseline, and Vishay documentation confirms AEC-Q101 availability across the full P4SMA18CA family including E3-suffixed parts.
What does the "CA" suffix indicate in P4SMA18CA-E3/61?
The "CA" suffix in P4SMA18CA-E3/61 denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions. Unlike unidirectional "A" variants, P4SMA18CA-E3/61 has no cathode marking and functions identically regardless of voltage polarity applied across its terminals.
What is the thermal resistance of P4SMA18CA-E3/61, and how does it affect PCB layout?
P4SMA18CA-E3/61 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. This value assumes minimum recommended pad layout; reducing pad area increases thermal resistance and may limit repetitive surge capability - so maintaining specified copper area is critical for sustained 400 W pulse handling.
Does P4SMA18CA-E3/61 meet UL safety standards?
Yes, P4SMA18CA-E3/61 is Underwriters Laboratory recognized under UL 497B (file E136766) for surge protector classification. This applies to both unidirectional and bidirectional P4SMA devices and validates its suitability in telecom, data line, and industrial equipment requiring UL-certified transient protection.
P4SMA18CA-E3/61 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.2V
- Current - Peak Pulse (10/1000µs):
- 15.9A
- 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)
P4SMA18CA-E3/61 FAQ
1.How can I place an order for P4SMA18CA-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA18CA-E3/61 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 P4SMA18CA-E3/61 reliable?
The price and inventory of P4SMA18CA-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA18CA-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA18CA-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA18CA-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA18CA-E3/61?
P4SMA18CA-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA18CA-E3/61 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 P4SMA18CA-E3/61?
For technical support, including P4SMA18CA-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA18CA-E3/61 requirements.
6.How does Aetrix verify that P4SMA18CA-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA18CA-E3/61 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 P4SMA18CA-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA18CA-E3/61?
All P4SMA18CA-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA18CA-E3/61, 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 P4SMA18CA-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA18CA-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA18CA-E3/61 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 …
