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Vishay General Semiconductor - Diodes Division P4SMA160CAHM3/I
- Part No.:
- P4SMA160CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA160CAHM3/I.pdf
- Description:
- TVS DIODE 136VWM 219VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,058
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Product details
Overview
P4SMA160CAHM3/I 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 160 V standoff voltage (VWM), 179 V minimum breakdown voltage (VBR), 219 V maximum clamping voltage (VC) at 1.4 A peak pulse current (IPPM), 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/I datasheet, P4SMA160CAHM3/I pinout, P4SMA160CAHM3/I application, or P4SMA160CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and compliance with UL 497B for telecom and automotive transient protection systems.
Technical Context
The P4SMA160CAHM3/I operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients without polarity marking. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for protecting sensitive analog inputs and CAN/LIN bus lines against ESD and inductive switching spikes.
Rated for 150 °C maximum junction temperature and MSL Level 1 moisture sensitivity, it supports reflow soldering up to 260 °C peak. The device delivers 400 W peak pulse power at TA = 25 °C (derated above 25 °C per Fig. 2), with thermal resistance RθJA = 120 °C/W and RθJL = 30 °C/W - enabling direct PCB-level integration without heatsinking in space-constrained automotive modules.
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 test current - Ensures predictable, repeatable avalanche onset across production lots. |
| VC (Clamping Voltage) | 219 V at IPPM = 1.4 A (10/1000 µs) - Limits transient voltage seen by downstream ICs to survivable levels. |
| PPPM (Peak Pulse Power) | 400 W - Sustains high-energy surges such as ISO 7637-2 Pulse 1/2a/5a without degradation. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Minimizes standby power loss and avoids false triggering in high-impedance circuits. |
| TJ max | 150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H). Molding compound meets UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during negative transient | One of two symmetrical terminals; no polarity marking required for bidirectional operation. |
| Cathode | Current entry terminal during positive transient | Identical physical terminal to Anode; bidirectional symmetry eliminates orientation constraints during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., RS-485, CAN FD) without external polarity management. |
| 400 W peak pulse power (10/1000 µs) | Withstands automotive load-dump surges and industrial lightning-induced transients per IEC 61000-4-5 Level 4. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive electronics including body control modules, ADAS sensors, and infotainment interfaces. |
| Low profile SMA package | 0.208" length × 0.157" width fits dense PCB layouts; compatible with standard 0.2" × 0.2" copper pads for thermal performance. |
| Glass passivated junction | Ensures stable breakdown characteristics over lifetime and improved resistance to humidity and contamination. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting wheel speed sensor outputs from inductive kickback and battery dump events in 12 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to clamp ±200 V transients before reaching signal conditioning amplifier. Use Value: Prevents latch-up or permanent damage to Hall-effect sensor ICs while maintaining signal integrity below 219 V clamping threshold. |
Use Scenario: Shielding PLC analog input channels from field wiring surges caused by motor contactor switching. IC Role / Device Role / Timing Role: Front-end transient suppressor on 4–20 mA current loop inputs, operating alongside precision shunt resistors and op-amps. Use Value: Limits transient energy to <1 mJ per event, avoiding ADC saturation and ensuring measurement continuity after surge recovery. |
| Telecom Line Interface | Consumer Appliance Control Board |
Use Scenario: Safeguarding Ethernet PHY line drivers against ESD and lightning-induced common-mode surges on PoE-powered devices. IC Role / Device Role / Timing Role: Common-mode TVS pair (two P4SMA160CAHM3/I) on differential pairs, referenced to chassis ground. Use Value: Maintains IEEE 802.3af compliance by clamping surges within 1 ns while adding <0.5 pF parasitic capacitance per terminal. |
Use Scenario: Protecting microcontroller GPIOs driving relays in smart washing machine control boards exposed to mains-borne noise. IC Role / Device Role / Timing Role: Localized TVS on relay coil flyback path and MCU input pins monitoring door latch switches. Use Value: Eliminates need for discrete RC snubbers; reduces BOM count while meeting IEC 61000-4-2 Level 4 (±15 kV air) requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ160CA | Same VWM/VBR/VC specs but in larger SMB (DO-214AA) package; 600 W PPPM rating. | Higher power handling suits higher-energy surges (e.g., 10/1000 µs >2 A), but requires 30% more board area. | Select when surge current exceeds 1.4 A or when thermal margin must exceed 400 W derated at 85 °C ambient. |
| 1.5KE160CA | Through-hole TO-204AE (DO-201AE); 1500 W PPPM; higher VF and slower response than P4SMA160CAHM3/I. | Used in legacy industrial power supplies where manual assembly and high-power dissipation are acceptable. | Choose only for through-hole designs requiring >1 kW surge capability; not suitable for automated SMT or space-constrained layouts. |
Compared with SMBJ160CA and 1.5KE160CA, the P4SMA160CAHM3/I offers optimal balance of AEC-Q101 qualification, compact SMA footprint, and precise 400 W clamping for automotive and industrial edge nodes - making it preferred for new SMT designs targeting IPC-A-610 Class 2/3 compliance and zero-defect manufacturing.
Availability
P4SMA160CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA160CAHM3/I 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 and automotive-grade validation.
The P4SMA series was developed specifically for robust, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 qualification and UL 497B recognition are mandatory.
FAQ
What does the "CA" suffix indicate in P4SMA160CAHM3/I?
The "CA" suffix in P4SMA160CAHM3/I denotes a bidirectional configuration, meaning the device clamps voltage transients equally in both polarities. Unlike unidirectional variants (e.g., P4SMA160A), P4SMA160CAHM3/I has no cathode band marking and provides symmetrical protection for AC signals, differential buses, or floating references - confirmed in Vishay Document 88367 Section "DEVICES FOR BIDIRECTION APPLICATIONS".
Is P4SMA160CAHM3/I qualified for automotive use?
Yes, P4SMA160CAHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It undergoes stress testing per JESD47 including HTGB, HTRB, and temperature cycling, and is approved for under-hood and cabin applications per Vishay's ordering information table and revision notes dated 09-Jan-2024.
What is the maximum clamping voltage of P4SMA160CAHM3/I at rated peak pulse current?
The maximum clamping voltage (VC) of P4SMA160CAHM3/I is 219 V at 1.4 A peak pulse current (IPPM) with a 10/1000 µs waveform, per the Electrical Characteristics table on page 2 of Vishay Document 88367. This value ensures downstream circuitry remains within safe operating limits during standardized surge events.
How does the SMA (DO-214AC) package of P4SMA160CAHM3/I affect thermal performance?
The SMA (DO-214AC) package of P4SMA160CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead (RθJL) of 30 °C/W. When mounted on 0.2" × 0.2" copper pads per Vishay's recommended layout, it sustains full 400 W pulse power at 25 °C ambient - but requires derating above 25 °C per Figure 2 in Document 88367.
Can P4SMA160CAHM3/I replace P4SMA160A in a design?
No, P4SMA160CAHM3/I cannot directly replace P4SMA160A because they differ fundamentally in polarity: P4SMA160A is unidirectional (cathode-marked, forward conduction path), while P4SMA160CAHM3/I is bidirectional (no polarity marking, symmetrical clamping). Substitution would require circuit review to confirm AC or floating signal paths and absence of DC bias conditions that rely on unidirectional blocking.
P4SMA160CAHM3/I 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/I FAQ
1.How can I place an order for P4SMA160CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA160CAHM3/I 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/I reliable?
The price and inventory of P4SMA160CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA160CAHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA160CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA160CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA160CAHM3/I?
P4SMA160CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA160CAHM3/I 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/I?
For technical support, including P4SMA160CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA160CAHM3/I requirements.
6.How does Aetrix verify that P4SMA160CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA160CAHM3/I 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/I meets industry standards.
7.What is the process for return or replacement of P4SMA160CAHM3/I?
All P4SMA160CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA160CAHM3/I, 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/I part is unused and in its original packaging.
Return procedure for P4SMA160CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA160CAHM3/I Tags
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