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Vishay General Semiconductor - Diodes Division P4SMA16CAHE3_A/H
- Part No.:
- P4SMA16CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA16CAHE3_A/H.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,928
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Product details
Overview
P4SMA16CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in the P4SMA series, designed for clamping voltage transients on signal and power lines. It features a 16 V standoff voltage (VWM), 17.8 A peak pulse current (IPPM) at 10/1000 µs, 22.5 V maximum clamping voltage (VC), and 400 W peak pulse power rating - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line conditioning.
For engineers reviewing the P4SMA16CAHE3_A/H datasheet, P4SMA16CAHE3_A/H pinout, P4SMA16CAHE3_A/H application, or P4SMA16CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and thermal derating behavior above 25 °C ambient.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics, while the low incremental surge resistance enables rapid energy absorption during transient events such as ESD, inductive switching spikes, and lightning-induced surges.
The P4SMA16CAHE3_A/H is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 120 °C/W (junction-to-ambient) when mounted on standard 0.2" × 0.2" copper pads. Its MSL Level 1 rating supports lead-free reflow up to 260 °C peak, and it meets UL 497B recognition for surge protectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13.6 V - Maximum continuous reverse working voltage before conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 15.2–16.8 V at 1 mA - Voltage at which device enters avalanche conduction; tight tolerance ensures predictable turn-on behavior. |
| VC (Clamping Voltage) | 22.5 V at 17.8 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 µs transient; critical for IC-level survivability. |
| PPPM (Peak Pulse Power) | 400 W - Energy-handling capacity under standardized 10/1000 µs waveform; sufficient for automotive load-dump and IEC 61000-4-5 Level 3 surges. |
| TJ max. | 150 °C - Maximum allowable junction temperature; sets upper limit for thermal design and derating curves in high-ambient environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC specification. |
| Package | SMA (DO-214AC) - Surface-mount outline with 2.54 mm lead pitch; compatible with automated placement and reflow soldering. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, and polarity-unmarked for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward direction; symmetrical with cathode in bidirectional mode | Enables clamping in both polarities - no DC bias dependency; connects to line being protected without polarity concern. |
| Cathode | Current exit terminal in forward direction; symmetrical with anode in bidirectional mode | Provides identical clamping response regardless of transient polarity - essential for AC-coupled or floating signal paths. |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 surge events up to Level 3 (1 kV/2 Ω) on 24 V systems. |
| AEC-Q101 qualified | Validated for automotive under-hood and chassis applications requiring extended temperature range and long-term reliability. |
| Glass passivated junction | Ensures stable breakdown voltage over time and temperature, minimizing parameter drift in harsh environments. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free assembly without moisture-related popcorning or delamination risks. |
| UL 497B recognized (QVGQ2) | Meets safety standards for telecom and industrial surge protective devices, simplifying system-level certification. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., pressure, temperature) from load dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal line and ground to limit transient excursions below IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to microcontroller GPIOs and analog front-ends during 12 V/24 V system surges. |
Use Scenario: Safeguarding PLC digital input modules connected to field wiring exposed to inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Fast-response shunt protector that diverts surge current away from optocoupler inputs and level-shifting circuitry. Use Value: Maintains functional integrity during repetitive 400 V/12 A transients per IEC 61000-4-4, reducing field failure rates. |
| Telecom Line Conditioning | Consumer USB/Display Port ESD Guard |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from lightning-induced surges on outdoor cabling in building automation networks. IC Role / Device Role / Timing Role: Primary clamping element in multi-stage protection scheme, absorbing bulk surge energy before downstream TVS arrays. Use Value: Limits induced common-mode voltage to <25 V, preserving signal integrity and preventing receiver saturation or damage. |
Use Scenario: ESD suppression on USB 2.0 data lines and HDMI hot-plug detect pins in set-top boxes and monitors. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) bidirectional clamp placed directly at connector to intercept ±8 kV contact discharge per IEC 61000-4-2. Use Value: Prevents data corruption and interface lockup without degrading signal rise/fall times due to minimal parasitic capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA | Same VWM (13.6 V) and VC (22.5 V), but higher PPPM (600 W); larger SMB (DO-214AA) package with 4.57 mm width vs. SMA's 2.92 mm. | Better suited for higher-energy surges where board space allows wider footprint; not drop-in compatible due to different pad layout and thermal mass. | Select SMBJ16CA only if surge energy exceeds 400 W requirement and PCB layout accommodates larger body size. |
| 1.5KE16CA | Through-hole TO-204AE (DO-15) package; same electrical specs but lower thermal performance (RθJA ≈ 150 °C/W) and no AEC-Q101 qualification. | Intended for cost-sensitive consumer or legacy industrial designs where automated SMT is not required and automotive compliance is unnecessary. | Choose 1.5KE16CA only for non-automotive, non-SMT applications where manual assembly or higher surge margin is acceptable. |
Compared with SMBJ16CA and 1.5KE16CA, the P4SMA16CAHE3_A/H uniquely combines AEC-Q101 qualification, SMA package compactness, and verified 400 W surge handling - making it optimal for space-constrained automotive and industrial SMT designs requiring certified reliability.
Availability
P4SMA16CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial digital I/O protection, and telecom line conditioning requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA16CAHE3_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 was developed for high-reliability transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping performance in compact surface-mount packages with AEC-Q101 and UL recognition.
FAQ
What is the clamping voltage of P4SMA16CAHE3_A/H at its rated peak pulse current?
The P4SMA16CAHE3_A/H has a maximum clamping voltage (VC) of 22.5 V at 17.8 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 circuits during surge events. The P4SMA16CAHE3_A/H maintains this clamping performance across its specified operating temperature range and is validated for repeatable behavior in AEC-Q101 stress testing.
Is P4SMA16CAHE3_A/H suitable for automotive applications?
Yes, the P4SMA16CAHE3_A/H is AEC-Q101 qualified and specifically designated for automotive use with the "HE3" suffix indicating RoHS-compliant and AEC-Q101-compliant construction. It is rated for operation from –65 °C to +150 °C junction temperature and has passed vibration, thermal cycling, and humidity bias tests required for under-hood and chassis-mounted electronics. The P4SMA16CAHE3_A/H is commonly used in automotive sensor interfaces, body control modules, and infotainment power rails.
What does the "CA" suffix indicate in P4SMA16CAHE3_A/H?
The "CA" suffix in P4SMA16CAHE3_A/H denotes a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities, with identical breakdown and clamping characteristics for positive and negative transients. This eliminates the need for polarity-aware placement and makes the P4SMA16CAHE3_A/H ideal for AC-coupled lines, differential buses like RS-485, and floating sensor outputs where voltage reversals may occur.
What is the thermal resistance of P4SMA16CAHE3_A/H, and how does it affect layout?
The P4SMA16CAHE3_A/H 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 per Vishay's DO-214AC footprint guidelines. To maintain safe junction temperatures under sustained power dissipation or repeated surges, designers must ensure adequate copper area and avoid excessive trace length between the P4SMA16CAHE3_A/H and ground planes.
How does P4SMA16CAHE3_A/H compare to unidirectional variants like P4SMA16AHE3_A/H?
The P4SMA16CAHE3_A/H differs from unidirectional P4SMA16AHE3_A/H in polarity behavior: the "CA" version clamps equally in both directions, while the "A" version conducts only in reverse bias and blocks forward current. The P4SMA16CAHE3_A/H has no polarity marking and is used where transient polarity is unpredictable; the unidirectional variant requires correct orientation and offers slightly lower leakage at VWM. Both share identical VWM (13.6 V), VC (22.5 V), and PPPM (400 W) ratings.
P4SMA16CAHE3_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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 13.6V
- Voltage - Breakdown (Min):
- 15.2V
- Voltage - Clamping (Max) @ Ipp:
- 22.5V
- Current - Peak Pulse (10/1000µs):
- 17.8A
- 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)
P4SMA16CAHE3_A/H FAQ
1.How can I place an order for P4SMA16CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA16CAHE3_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 P4SMA16CAHE3_A/H reliable?
The price and inventory of P4SMA16CAHE3_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 P4SMA16CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA16CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA16CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA16CAHE3_A/H?
P4SMA16CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA16CAHE3_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 P4SMA16CAHE3_A/H?
For technical support, including P4SMA16CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA16CAHE3_A/H requirements.
6.How does Aetrix verify that P4SMA16CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA16CAHE3_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 P4SMA16CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA16CAHE3_A/H?
All P4SMA16CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA16CAHE3_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 P4SMA16CAHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA16CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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