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Vishay General Semiconductor - Diodes Division P4SMA16CAHM3_A/H
- Part No.:
- P4SMA16CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA16CAHM3_A/H.pdf
- Description:
- TVS DIODE 13.6VWM 22.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,676
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Product details
Overview
P4SMA16CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount 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 V minimum breakdown voltage (VBR), 22.5 V maximum clamping voltage (VC) at 17.8 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 µs waveform), used in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the P4SMA16CAHM3_A/H datasheet, P4SMA16CAHM3_A/H pinout, P4SMA16CAHM3_A/H application, or P4SMA16CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across 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 meeting MSL Level 1 moisture sensitivity and JESD201 Class 2 whisker resistance requirements.
The device sustains repetitive 400 W pulses (10/1000 µs) up to 0.01% duty cycle, derating linearly above 25 °C ambient per Fig. 2, and achieves <1 ns response time to transient events. It is rated for continuous operation from –65 °C to +150 °C junction temperature, with thermal resistance of 30 °C/W junction-to-lead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13.6 V - Maximum steady-state reverse voltage before conduction begins; defines safe operating window for protected circuit. |
| VBR (min) | 15.2 V - Minimum breakdown voltage at 1.0 mA test current; guarantees reliable turn-on during overvoltage events. |
| VC (max) | 22.5 V - Maximum clamped voltage at 17.8 A IPPM; limits stress on downstream ICs during ESD or surge. |
| PPPM | 400 W - Peak pulse power handling (10/1000 µs); supports robust protection against IEC 61000-4-5 surges. |
| ID (max) | 1.0 µA - Max reverse leakage at VWM; minimizes standby power loss and avoids false triggering. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard PCB pad; informs heatsinking and layout requirements. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Matte tin-plated leads, solderable per J-STD-002 and JESD22-B102. No polarity marking - symmetrical bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Identical terminals; conducts equally in either direction when voltage exceeds ±VBR - no orientation required during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards. |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV surge) on 2 Ω source impedance with margin. |
| Low clamping ratio (VC/VBR ≈ 1.49) | Minimizes overvoltage overshoot during fast transients, improving system-level immunity. |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak - compatible with standard lead-free assembly processes. |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485/RS-422 Bus Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, absorbing energy before it reaches MCU or analog front-end. Use Value: Maintains signal integrity under ±100 V transients while limiting clamped voltage to ≤22.5 V, preventing latch-up or damage to 3.3 V/5 V logic. |
Use Scenario: Safeguarding differential data lines in factory automation controllers exposed to EFT bursts and lightning-induced surges. IC Role / Device Role / Timing Role: Common-mode TVS across A/B lines and to ground, suppressing common-mode noise and differential surges simultaneously. Use Value: Enables >25 kV ESD contact discharge immunity per IEC 61000-4-2 and withstands 4 kV surge per IEC 61000-4-5 due to low VC and fast response. |
| Consumer USB Port ESD Protection | Power Supply Input Transient Clamping |
Use Scenario: Adding secondary ESD protection on USB 2.0 D+/D– lines behind primary protection in set-top boxes and smart displays. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp (CJ ≈ 100 pF at VWM) preserving signal rise/fall times. Use Value: Adds 15 kV air/8 kV contact ESD margin without degrading 480 Mbps data eye, verified per USB-IF compliance tests. |
Use Scenario: Clamping input surges on 12 V DC power rails feeding motor drivers or LED drivers in smart lighting systems. IC Role / Device Role / Timing Role: Parallel-connected TVS shunting inductive kickback from relay coils or MOSFET switching. Use Value: Limits transient spikes to ≤22.5 V, protecting 16 V-rated input capacitors and PMICs without requiring oversized bulk capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ16CA | Higher package thermal mass (SMB/DO-214AA), RθJA = 85 °C/W; same VWM/VBR/VC ratings. | Better power dissipation in high-duty-cycle surge environments; larger footprint requires PCB redesign. | Select SMBJ16CA when sustained surge repetition or higher average power handling is required. |
| 1.5KE16CA | Through-hole (DO-201AE), 1500 W PPPM, higher VC (26.5 V), slower response due to parasitic inductance. | Used in legacy power supply designs where board space allows through-hole mounting and higher clamping is acceptable. | Choose 1.5KE16CA only for cost-sensitive non-automotive applications with existing through-hole layouts. |
Compared with SMBJ16CA and 1.5KE16CA, P4SMA16CAHM3_A/H offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W surge capability - making it preferred for new automotive and space-constrained industrial designs where surface-mount reliability and process compatibility are critical.
Availability
P4SMA16CAHM3_A/H is available at Aetrix Electronics and suitable for automotive electronics, industrial communication interfaces, and consumer port protection requiring stable component supply, halogen-free compliance, and AEC-Q101 traceability.
Supply support for P4SMA16CAHM3_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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and automotive-grade validation.
The P4SMA Series targets high-volume, space-constrained transient protection in automotive, industrial, and computing applications - engineered for automated SMT assembly, AEC-Q101 compliance, and consistent clamping performance across temperature and lifetime.
FAQ
What does the "CA" suffix indicate in P4SMA16CAHM3_A/H?
The "CA" suffix denotes a bidirectional configuration: the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4SMA16A), P4SMA16CAHM3_A/H has no cathode marking and functions identically regardless of polarity - essential for protecting AC-coupled or floating signal paths. This is confirmed in Vishay's P4SMA datasheet Section "DEVICES FOR BIDIRECTION APPLICATIONS".
Is P4SMA16CAHM3_A/H qualified for automotive use?
Yes, P4SMA16CAHM3_A/H is AEC-Q101 qualified, as indicated by the "HM3" suffix (halogen-free, RoHS-compliant, AEC-Q101 qualified) and explicitly stated in the "MECHANICAL DATA" section. It undergoes stress testing per JEDEC standards including temperature cycling, highly accelerated life testing (HALT), and ESD verification - making it suitable for under-hood and body-control module applications per automotive OEM requirements.
What is the maximum clamping voltage of P4SMA16CAHM3_A/H and at what current is it specified?
The maximum clamping voltage (VC) of P4SMA16CAHM3_A/H is 22.5 V, measured at a peak pulse current (IPPM) of 17.8 A using a 10/1000 µs waveform. This value is listed in the "ELECTRICAL CHARACTERISTICS" table for part number (+)P4SMA16A (bidirectional variant), and applies under standardized test conditions with device mounted on 0.2" × 0.2" copper pads per Figure 1 and Note (2).
How does the "_A/H" ordering suffix affect P4SMA16CAHM3_A/H?
The "_A/H" suffix specifies the revision level ("A") and packaging format ("H" = 7-inch diameter plastic tape and reel, 1800 units per reel). Per the "ORDERING INFORMATION" table, P4SMA16CAHM3_A/H uses halogen-free (HM3) material, AEC-Q101 qualification, and is supplied in standard SMT-compatible carrier tape - ensuring compatibility with high-speed pick-and-place equipment and full traceability for production lots.
Can P4SMA16CAHM3_A/H replace P4SMA16A in a design?
No - P4SMA16CAHM3_A/H is bidirectional, while P4SMA16A is unidirectional. Substituting them requires verifying circuit topology: P4SMA16CAHM3_A/H may be used where polarity is undefined or AC signals exist, but it cannot replace P4SMA16A in DC-biased unidirectional protection (e.g., +12 V rail to ground) without risking unintended conduction during normal operation. Always validate clamping behavior and leakage in the target application.
P4SMA16CAHM3_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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA16CAHM3_A/H FAQ
1.How can I place an order for P4SMA16CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA16CAHM3_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 P4SMA16CAHM3_A/H reliable?
The price and inventory of P4SMA16CAHM3_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 P4SMA16CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA16CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA16CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA16CAHM3_A/H?
P4SMA16CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA16CAHM3_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 P4SMA16CAHM3_A/H?
For technical support, including P4SMA16CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA16CAHM3_A/H requirements.
6.How does Aetrix verify that P4SMA16CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA16CAHM3_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 P4SMA16CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA16CAHM3_A/H?
All P4SMA16CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA16CAHM3_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 P4SMA16CAHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA16CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA16CAHM3_A/H Tags
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