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Vishay General Semiconductor - Diodes Division P4SMA16CAHE3/5A
- Part No.:
- P4SMA16CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA16CAHE3/5A.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,770
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Product details
Overview
P4SMA16CAHE3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, 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), 22.5 V maximum clamping voltage (VC) at IPPM, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the P4SMA16CAHE3/5A datasheet, P4SMA16CAHE3/5A pinout, P4SMA16CAHE3/5A application, or P4SMA16CAHE3/5A equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM = 1.41), MSL Level 1 moisture sensitivity, RoHS-compliant matte tin terminals, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports rapid energy dissipation during ESD or lightning-induced surges.
The device is rated for 400 W peak pulse power (10/1000 µs waveform) up to 91 V, derating to 300 W above that threshold. Thermal resistance is 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead), requiring appropriate PCB copper area for sustained power handling - specifically 0.2" × 0.2" (5.0 mm × 5.0 mm) pads per terminal per Vishay's test condition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13.6 V - Maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 15.2–16.8 V at 1.0 mA - Voltage at which device enters avalanche breakdown; tight tolerance (±5%) ensures predictable triggering. |
| VC (Clamping Voltage) | 22.5 V at 17.8 A (10/1000 µs) - Maximum voltage seen by protected circuit during surge; low VC/VWM ratio (1.41) minimizes stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy-handling capacity under standard 10/1000 µs waveform; sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) testing. |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - Negligible standby current; avoids loading sensitive analog or low-power sensor circuits. |
| TJ max. | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments with proper thermal design. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per JESD22 standards. |
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. No polarity marking - bidirectional symmetry eliminates cathode/anode identification requirement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals function identically; surge current flows bidirectionally through the same avalanche junction structure. |
| Case (body) | Thermal and mechanical interface | Plastic body provides electrical isolation; thermal path relies entirely on lead-to-PCB conduction via soldered terminals. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or ungrounded power rails without polarity constraints. |
| 400 W peak pulse rating (10/1000 µs) | Supports robust immunity against ISO 7637-2 pulse 1/2a/3a and IEC 61000-4-5 combination wave surges in automotive and industrial systems. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without baking or special handling prior to assembly. |
| Glass-passivated junction | Ensures stable VBR over lifetime and temperature, low leakage, and high reliability in humid or thermally cycled environments. |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive applications including engine control units, ADAS sensors, and infotainment power supplies. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal pair or supply rail to clamp fast-rising transients before they reach MCU I/O or analog front-end. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor interfaces while maintaining signal integrity due to low capacitance (<100 pF at 0 V) and sub-ns response time. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation PLCs exposed to ground potential differences and motor drive noise. IC Role / Device Role / Timing Role: Differential-line TVS connected between A/B lines and ground to suppress common-mode surges without affecting DC bias or data eye. Use Value: Maintains >500 kbps data integrity under repeated 1 kV/42 Ω surges (IEC 61000-4-5) thanks to symmetrical clamping and low dynamic impedance. |
| Consumer USB Port Protection | Telecom Power Rail Clamping |
Use Scenario: Secondary-level surge suppression on USB 2.0 VBUS and D+/D− lines in set-top boxes and smart home hubs subjected to ESD and hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to connector to shunt ESD (IEC 61000-4-2 ±15 kV contact) before reaching USB PHY. Use Value: Achieves <0.5 pF typical junction capacitance at 0 V, avoiding signal rise-time degradation while delivering full 15 kV ESD immunity. |
Use Scenario: Input-stage transient suppression on 12 V/24 V telecom power supplies feeding base station radios and remote radio units. IC Role / Device Role / Timing Role: Parallel-connected TVS on DC input to absorb lightning-induced surges (IEC 61000-4-5 Level 4) before upstream DC/DC converters. Use Value: Handles 400 W pulses without degradation, with 22.5 V clamping limiting downstream converter overvoltage stress to safe margins. |
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 | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; 23.2 V VC at 24.7 A; same VWM/VBR range. | Better suited for higher-energy surges but requires larger PCB footprint and may not fit space-constrained automotive modules. | Select when surge energy exceeds 400 W or when board layout allows SMB footprint and higher thermal mass is beneficial. |
| 1.5SMC16CA | 1500 W PPPM; DO-214AB (SMC) package; 25.5 V VC at 58.8 A; wider VBR tolerance (±10%); higher RθJA (100 °C/W). | Targeted at primary-level AC/DC input protection rather than signal-line or secondary-side clamping. | Choose for front-end power rail protection where higher surge margin is needed and thermal management permits larger package. |
Compared with SMBJ16CA and 1.5SMC16CA, P4SMA16CAHE3/5A offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and precise 13.6 V standoff - making it preferred for space-limited, automotive-grade signal-line protection where 400 W surge handling suffices.
Availability
P4SMA16CAHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial communication ports, consumer USB power delivery, and telecom DC input stages requiring stable component supply, AEC-Q101 compliance, and consistent surge performance across production batches.
Supply support for P4SMA16CAHE3/5A 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series is part of Vishay's TRANSZORB® TVS portfolio, engineered for high-reliability transient suppression in automotive, industrial, and communications equipment where fast response, low clamping, and AEC-Q101 validation are mandatory.
FAQ
What is the standoff voltage (VWM) and clamping voltage (VC) of P4SMA16CAHE3/5A?
The P4SMA16CAHE3/5A has a standoff voltage (VWM) of 13.6 V and a maximum clamping voltage (VC) of 22.5 V at 17.8 A (10/1000 µs waveform). This means the device remains non-conductive below 13.6 V and limits transient voltage to no more than 22.5 V during a specified surge event - a critical parameter for protecting downstream 15 V-tolerant ICs. The VC value is measured under standardized conditions using 0.2" × 0.2" copper pads per terminal.
Is P4SMA16CAHE3/5A suitable for automotive applications?
Yes, P4SMA16CAHE3/5A is AEC-Q101 qualified (indicated by the HE3 suffix) and explicitly validated for automotive use. It meets requirements for temperature cycling, high-temperature reverse bias (HTRB), and ESD robustness per JESD22 standards. Its 150 °C maximum junction temperature and MSL Level 1 rating support under-hood deployment in ECUs, ADAS sensors, and body control modules.
What does the "CA" and "HE3/5A" suffix mean in P4SMA16CAHE3/5A?
In P4SMA16CAHE3/5A, "CA" denotes bidirectional configuration (clamping in both polarities), "HE3" indicates RoHS-compliant and AEC-Q101-qualified construction, and "5A" specifies packaging in 13-inch diameter tape-and-reel with 7500 units per reel. This ordering code ensures traceable, automotive-grade material delivered in high-volume SMT-ready format.
How does P4SMA16CAHE3/5A compare to unidirectional P4SMA16AHE3/5A?
P4SMA16CAHE3/5A is bidirectional with symmetrical clamping, while P4SMA16AHE3/5A is unidirectional and features a cathode band marking. Both share identical VWM (13.6 V), VBR (15.2–16.8 V), and VC (22.5 V), but only the CA version protects AC-coupled or floating lines without polarity dependency. Unidirectional types require correct orientation and are used where DC bias is present and directionality is known.
What is the thermal resistance and recommended PCB layout for P4SMA16CAHE3/5A?
P4SMA16CAHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W. Vishay specifies that all ratings - especially the 400 W PPPM - are based on mounting the device on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Reducing pad size significantly degrades surge capability and must be validated per application.
P4SMA16CAHE3/5A 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:
- Discontinued at Digi-Key
- 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)
P4SMA16CAHE3/5A FAQ
1.How can I place an order for P4SMA16CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA16CAHE3/5A 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 P4SMA16CAHE3/5A reliable?
The price and inventory of P4SMA16CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA16CAHE3/5A is usually 5 days.
3.What payment methods are accepted for P4SMA16CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA16CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA16CAHE3/5A?
P4SMA16CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA16CAHE3/5A 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 P4SMA16CAHE3/5A?
For technical support, including P4SMA16CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA16CAHE3/5A requirements.
6.How does Aetrix verify that P4SMA16CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All P4SMA16CAHE3/5A 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 P4SMA16CAHE3/5A meets industry standards.
7.What is the process for return or replacement of P4SMA16CAHE3/5A?
All P4SMA16CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA16CAHE3/5A, 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 P4SMA16CAHE3/5A part is unused and in its original packaging.
Return procedure for P4SMA16CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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