My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA180CAHM3_A/I
- Part No.:
- P4SMA180CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA180CAHM3_A/I.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,150
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA180CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, rated for 180 V standoff voltage (VWM), 207 V breakdown voltage (VBR min), and 246 V clamping voltage (VC) at 1.2 A peak pulse current (IPPM), delivering 400 W peak pulse power with 10/1000 µs waveform - used to protect MOSFETs, sensor signal lines, and ICs in automotive and industrial power supply rails.
For engineers reviewing the P4SMA180CAHM3_A/I datasheet, P4SMA180CAHM3_A/I pinout, P4SMA180CAHM3_A/I application, or P4SMA180CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and thermal resistance (RθJA = 120 °C/W) for board-level surge protection in harsh environments.
Technical Context
This device operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity dependency. It features glass-passivated junctions for stable leakage performance and low incremental surge resistance to minimize voltage overshoot during fast ESD or lightning-induced surges.
Designed for surface-mount assembly on standard PCB copper pads (0.2" × 0.2"), the P4SMA180CAHM3_A/I sustains repetitive 400 W pulses at TA = 25 °C (derated above 25 °C per Fig. 2), with maximum junction temperature of +150 °C and thermal resistance of 30 °C/W from junction to lead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 180 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 207 V min / 229 V max at IT = 1 mA - Voltage at which device transitions into avalanche conduction; ensures predictable turn-on threshold. |
| VC (Clamping Voltage) | 246 V at IPPM = 1.2 A (10/1000 µs) - Peak voltage seen by protected circuit during surge; critical for ensuring downstream component survival. |
| PPPM (Peak Pulse Power) | 400 W - Surge energy handling capacity under standardized 10/1000 µs waveform; supports IEC 61000-4-5 Level 3/4 compliance. |
| ID (Reverse Leakage) | 1.0 µA max at VWM = 180 V - Low leakage preserves system efficiency and avoids false triggering in high-impedance circuits. |
| TJ max | +150 °C - Enables operation in under-hood automotive and industrial ambient conditions without derating penalties. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.0 mm × 5.0 mm copper pad requirement; compatible with automated pick-and-place. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1, peak reflow temperature 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical node in bidirectional operation | No polarity marking required; terminals are functionally identical for transient suppression in either direction. |
| Cathode | Current exit terminal in forward bias; symmetrical node in bidirectional operation | Identical electrical role to Anode; bidirectional symmetry eliminates orientation constraints during placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness - suitable for engine control, ADAS, and body electronics. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets JESD201 Class 2 whisker resistance and global environmental regulations - supports green manufacturing and export compliance. |
| 400 W peak pulse power (10/1000 µs) | Provides margin against IEC 61000-4-5 combination wave surges up to 2 kV/12 Ω source impedance in industrial power inputs. |
| Low clamping ratio (VC/VBR ≈ 1.19) | Minimizes overvoltage stress on protected ICs - critical for safeguarding 200 V-rated MOSFETs and isolated gate drivers. |
| Fast response time (< 1 ns) | Engages before transient energy couples into sensitive nodes - essential for protecting high-speed sensor interfaces and CAN transceivers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppresses load-dump transients (up to 120 V) and alternator ripple spikes on 24 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power input pins of microcontrollers and motor drivers to clamp both polarities of surge events. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic supplies and gate drivers during ISO 7637-2 Pulse 5a testing. |
Use Scenario: Shields analog output lines (e.g., 4–20 mA current loops) and digital I/O (CAN, LIN) from ESD and inductive switching noise in factory automation sensors. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground to absorb sub-100 ns ESD strikes without distorting signal integrity. Use Value: Maintains ±1% accuracy in precision current-loop transmitters while surviving contact discharge ≥ 8 kV per IEC 61000-4-2. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Guards primary-side DC inputs of PoE-powered switches and base station RF modules against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Front-end TVS on 48 V input rail, coordinated with upstream fuses and downstream DC/DC converters for staged protection. Use Value: Limits let-through voltage to ≤ 250 V during 10/1000 µs 6 kV surges - preserving 50 V-rated input capacitors and controller ICs. |
Use Scenario: Protects half-bridge gate drivers and bootstrap circuits in BLDC motor inverters from commutation-induced voltage spikes in washing machines and HVAC fans. IC Role / Device Role / Timing Role: Clamps flyback voltages across high-side MOSFETs during rapid PWM switching transitions. Use Value: Reduces gate oxide stress and prevents unintended turn-on by limiting dv/dt-induced coupling into gate nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Same VWM (180 V), higher IPPM (3.2 A), larger SMB (DO-214AA) package (6.2 mm × 3.6 mm vs. SMA's 4.5 mm × 2.8 mm) | Higher surge rating suits 120 VAC input front-ends; less space-constrained layouts | Select when board area allows larger footprint and higher 600 W PPPM is needed. |
| 1.5KE180CA | Same VWM (180 V), through-hole DO-15 package, 500 W PPPM, higher VC (260 V) | Legacy designs requiring axial-leaded components; lower thermal performance (RθJA ≈ 150 °C/W) | Choose only for repair/replacement in existing through-hole assemblies - not for new SMT designs. |
Compared with SMBJ180CA and 1.5KE180CA, the P4SMA180CAHM3_A/I offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and halogen-free compliance - making it preferred for next-generation automotive and space-constrained industrial modules where reliability and regulatory alignment are mandatory.
Availability
P4SMA180CAHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU power rails, industrial sensor interfaces, telecom DC inputs, and consumer appliance motor drives requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P4SMA180CAHM3_A/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume surge protection needs in automotive, industrial, and communications systems - engineered for robust transient suppression in compact SMT packages with AEC-Q101 and RoHS compliance built-in.
FAQ
What is the clamping voltage of the P4SMA180CAHM3_A/I at its rated peak pulse current?
The P4SMA180CAHM3_A/I has a maximum clamping voltage (VC) of 246 V at 1.2 A peak pulse current (IPPM) under the 10/1000 µs waveform condition. This value is measured per standard test methods in the Vishay datasheet (Document Number: 88367) and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring compatibility with 200 V-rated downstream components.
Is the P4SMA180CAHM3_A/I suitable for automotive applications?
Yes, the P4SMA180CAHM3_A/I is AEC-Q101 qualified (indicated by the HM3 suffix and "_A" revision code), meaning it has passed rigorous stress tests including temperature cycling, high-temperature reverse bias, and ESD robustness required for automotive electronics. Its 150 °C maximum junction temperature and bidirectional clamping make it appropriate for under-hood ECUs, body control modules, and ADAS power supplies.
What does the "CA" suffix mean in P4SMA180CAHM3_A/I?
The "CA" suffix in P4SMA180CAHM3_A/I denotes a bidirectional Transient Voltage Suppressor - meaning the device provides symmetrical clamping for both positive and negative transients without polarity dependence. Unlike unidirectional variants (e.g., P4SMA180A), the CA version has no cathode marking and functions identically across both terminals, simplifying layout and eliminating orientation errors during assembly.
How does the P4SMA180CAHM3_A/I compare to the P4SMA180A variant?
The P4SMA180CAHM3_A/I is bidirectional with identical VWM (180 V) and VBR (207–229 V), whereas the P4SMA180A is unidirectional and includes a cathode band for polarity identification. Both share the same SMA package, AEC-Q101 qualification (HM3), and halogen-free construction, but the CA version enables dual-polarity protection in applications like AC-coupled signal lines or floating power domains where polarity reversal may occur.
What is the moisture sensitivity level (MSL) rating for the P4SMA180CAHM3_A/I?
The P4SMA180CAHM3_A/I is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at ≤ 30 °C/60 % RH and can withstand peak reflow temperatures up to 260 °C without baking preconditioning. This eliminates handling restrictions during standard SMT assembly and supports high-yield manufacturing for automotive and industrial customers requiring zero moisture-related defects.
P4SMA180CAHM3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 154V
- Voltage - Breakdown (Min):
- 171V
- Voltage - Clamping (Max) @ Ipp:
- 246V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- 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)
P4SMA180CAHM3_A/I FAQ
1.How can I place an order for P4SMA180CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA180CAHM3_A/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 P4SMA180CAHM3_A/I reliable?
The price and inventory of P4SMA180CAHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA180CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA180CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA180CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA180CAHM3_A/I?
P4SMA180CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA180CAHM3_A/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 P4SMA180CAHM3_A/I?
For technical support, including P4SMA180CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA180CAHM3_A/I requirements.
6.How does Aetrix verify that P4SMA180CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA180CAHM3_A/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 P4SMA180CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA180CAHM3_A/I?
All P4SMA180CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA180CAHM3_A/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 P4SMA180CAHM3_A/I part is unused and in its original packaging.
Return procedure for P4SMA180CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA180CAHM3_A/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
