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Vishay General Semiconductor - Diodes Division P4SMA160CAHM3/H
- Part No.:
- P4SMA160CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA160CAHM3/H.pdf
- Description:
- TVS DIODE 136VWM 219VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,912
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Product details
Overview
P4SMA160CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 136 V standoff voltage (VWM), 152–168 V breakdown voltage (VBR) at 1 mA, 219 V maximum clamping voltage (VC) at 1.4 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4SMA160CAHM3/H datasheet, P4SMA160CAHM3/H pinout, P4SMA160CAHM3/H application, or P4SMA160CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low thermal resistance (RθJL = 30 °C/W), 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 characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance supports fast transient response under high-current surges.
The device is rated for 150 °C maximum junction temperature and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA = 120 °C/W) reflects performance on standard 0.2" × 0.2" copper pads, and it delivers 300 W derated peak pulse power above 91 V - confirmed for repetitive 0.01% duty cycle operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 136 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 152–168 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on during transients; tight tolerance supports predictable protection threshold. |
| VC (Clamping Voltage) | 219 V at IPPM = 1.4 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capacity with 10/1000 µs waveform; enables robust protection against lightning-induced or inductive-switching transients. |
| TJ max. | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.28 mm length, 3.99 mm width, and 2.29 mm height; compatible with JEDEC-standard pick-and-place equipment. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional - no polarity marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; conducts bidirectionally when voltage exceeds ±VBR - eliminates orientation constraints during PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC, differential, or floating signal lines without external polarity management or series diodes. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control modules, ADAS sensors, and body electronics. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global industrial and automotive supply chains (P/N suffix HM3). |
| 400 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-line) when properly mounted on 5.0 mm × 5.0 mm copper pads. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C), eliminating bake requirements prior to assembly. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal pair or between signal and ground to limit transient excursions. Use Value: Prevents latch-up or damage to precision ADC inputs and transceiver ICs during 100 V/50 ms load dump events. |
Use Scenario: Safeguarding RS-485, RS-232, or 4–20 mA loop interfaces in PLCs and motor drives exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary transient suppressor located at connector entry point, shunting surge energy before reaching isolation barrier or level-shifting IC. Use Value: Maintains signal integrity during 1 kV/500 A IEC 61000-4-5 surges while preserving <1 nF junction capacitance to avoid data rate degradation. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters subjected to capacitor discharge or transformer flyback spikes. IC Role / Device Role / Timing Role: Clamping device across DC output rails to prevent overvoltage damage to downstream DC-DC converters and microcontrollers. Use Value: Limits output overshoot to ≤219 V during 400 W transient events, enabling use of lower-voltage-rated output capacitors and MOSFETs. |
Use Scenario: Primary protection for Ethernet PHY or DSL line drivers connected to outside plant wiring vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage TVS on line side of hybrid transformer or common-mode choke to absorb common-mode surge energy. Use Value: Withstands 10/1000 µs surges up to 1.4 A while maintaining low leakage (<1 µA), minimizing standby power loss in always-on telecom systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; RθJA = 100 °C/W vs. 120 °C/W. | Better suited for higher-energy surges; requires larger PCB footprint and different pad layout. | Select when system-level surge test levels exceed IEC 61000-4-5 Level 4 or when thermal margin is constrained. |
| 1.5KE160CA | Through-hole TO-204AE (DO-201AE); 1500 W PPPM; higher VC (259 V); not AEC-Q101 qualified. | Used in legacy industrial power supplies; incompatible with SMT automation and automotive qualification requirements. | Choose only for cost-sensitive, non-automotive, through-hole designs where board space and reflow compatibility are not constraints. |
Compared with SMBJ160CA and 1.5KE160CA, the P4SMA160CAHM3/H provides optimal balance of AEC-Q101 compliance, SMT manufacturability, and 400 W surge handling in minimal SMA footprint - making it preferred for new automotive and space-constrained industrial designs requiring traceable halogen-free sourcing.
Availability
P4SMA160CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface units requiring stable component supply, long-term lifecycle support, and halogen-free compliance.
Supply support for P4SMA160CAHM3/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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets high-reliability transient suppression in automotive, industrial, and communications systems - engineered for AEC-Q101 compliance, low-profile SMT integration, and consistent clamping performance across temperature and lifetime.
FAQ
What does the "CA" suffix indicate in P4SMA160CAHM3/H?
The "CA" suffix in P4SMA160CAHM3/H denotes a bidirectional configuration, meaning the device clamps voltage transients equally in both polarities. This eliminates the need for polarity-aware placement on PCBs and makes it ideal for protecting AC-coupled signals, differential buses like CAN or RS-485, and floating sensor outputs - unlike unidirectional variants (e.g., P4SMA160AHM3/H) that require cathode orientation.
Is P4SMA160CAHM3/H qualified for automotive applications?
Yes, P4SMA160CAHM3/H is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HM3" (halogen-free, RoHS-compliant, AEC-Q101). It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, making it suitable for under-hood and chassis-mounted automotive electronics including ADAS sensors and body control modules.
What is the maximum clamping voltage of P4SMA160CAHM3/H and under what conditions?
The maximum clamping voltage (VC) of P4SMA160CAHM3/H is 219 V, measured at a peak pulse current (IPPM) of 1.4 A using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed per Vishay's datasheet Table "ELECTRICAL CHARACTERISTICS" and defines the upper voltage limit imposed on protected circuits during surge events.
How does the SMA (DO-214AC) package of P4SMA160CAHM3/H compare thermally to larger packages?
The SMA (DO-214AC) package of P4SMA160CAHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W on 0.2" × 0.2" copper pads, and junction-to-lead resistance (RθJL) of 30 °C/W. While larger packages like SMB (RθJA ≈ 100 °C/W) offer better thermal dissipation, the SMA footprint enables high-density layouts and remains effective for 400 W transient events when PCB copper area is optimized per Vishay's recommended pad layout.
Does P4SMA160CAHM3/H require special handling or baking before reflow soldering?
No, P4SMA160CAHM3/H is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and withstands standard lead-free reflow profiles with a maximum peak temperature of 260 °C. No pre-bake is required, simplifying manufacturing flow and reducing risk of moisture-related defects during assembly.
P4SMA160CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 136V
- Voltage - Breakdown (Min):
- 152V
- Voltage - Clamping (Max) @ Ipp:
- 219V
- Current - Peak Pulse (10/1000µs):
- 1.4A
- 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)
P4SMA160CAHM3/H FAQ
1.How can I place an order for P4SMA160CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA160CAHM3/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 P4SMA160CAHM3/H reliable?
The price and inventory of P4SMA160CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA160CAHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA160CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA160CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA160CAHM3/H?
P4SMA160CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA160CAHM3/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 P4SMA160CAHM3/H?
For technical support, including P4SMA160CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA160CAHM3/H requirements.
6.How does Aetrix verify that P4SMA160CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA160CAHM3/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 P4SMA160CAHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA160CAHM3/H?
All P4SMA160CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA160CAHM3/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 P4SMA160CAHM3/H part is unused and in its original packaging.
Return procedure for P4SMA160CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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