My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA180CAHM3/H
- Part No.:
- P4SMA180CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA180CAHM3/H.pdf
- Description:
- TVS DIODE 154VWM 246VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,177
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA180CAHM3/H 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 154 V standoff voltage (VWM), 171–189 V breakdown voltage (VBR) at 1 mA, 246 V maximum clamping voltage (VC) at 1.2 A peak pulse current, and 400 W peak pulse power rating with a 10/1000 µs waveform - used to protect MOSFETs, sensor interfaces, and industrial I/O lines.
For engineers reviewing the P4SMA180CAHM3/H datasheet, P4SMA180CAHM3/H pinout, P4SMA180CAHM3/H application, or P4SMA180CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification for automotive-grade reliability, halogen-free RoHS compliance, and SMA (DO-214AC) package compatibility with automated SMT assembly.
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 µA at VWM), while the low incremental surge resistance supports effective energy diversion during fast transients.
The device meets J-STD-020 MSL Level 1 (peak reflow ≤260 °C) and is qualified to AEC-Q101 for automotive underhood and body electronics applications. Thermal resistance is specified at RθJA = 120 °C/W (typical) and RθJL = 30 °C/W, indicating efficient heat transfer to PCB copper pads under defined layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 154 V - maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (Breakdown Voltage) | 171–189 V at 1 mA - precise voltage threshold where avalanche conduction initiates; tight tolerance enables predictable protection onset. |
| VC (Clamping Voltage) | 246 V at IPPM = 1.2 A - peak voltage seen by downstream components during transient; critical for ensuring IC survival under surge stress. |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs waveform) - energy-handling capacity per transient; sufficient for IEC 61000-4-5 Level 3 surges on industrial interfaces. |
| ID (Reverse Leakage) | <1 µA at VWM - negligible standby current; avoids loading sensitive analog or low-power sensor circuits. |
| TJ max. | 150 °C - maximum junction temperature; supports operation in under-hood automotive environments and high-ambient industrial enclosures. |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 5.0 mm × 5.0 mm copper pad requirement; compatible with standard reflow profiles and pick-and-place equipment. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode 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 with anode in bidirectional operation | Unmarked on bidirectional devices; both terminals serve as interchangeable surge current paths during positive or negative transients. |
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 sensors, and body electronics. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets global environmental regulations and JEDEC JESD201 Class 2 whisker resistance - eliminates risk of tin whisker growth in long-life industrial deployments. |
| 400 W peak pulse power (10/1000 µs) | Handles repetitive surge events up to 0.01% duty cycle - protects against inductive switching spikes in motor drives and relay-controlled systems. |
| Glass-passivated junction | Ensures stable VBR over time and temperature; reduces parameter drift in harsh thermal environments (−65 °C to +150 °C). |
| Low profile SMA package | Enables high-density PCB layouts and compatibility with automated SMT assembly lines - no manual handling or through-hole conversion needed. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector interface to shunt transients before they reach signal conditioning ICs. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor front-ends while maintaining signal integrity due to sub-1 µA leakage at 154 V standoff. |
Use Scenario: Safeguarding PLC digital input modules and analog acquisition channels from field-induced surges in factory automation systems. IC Role / Device Role / Timing Role: Primary transient suppressor across 24 V DC supply rails and isolated signal lines connected to solenoids, contactors, or motors. Use Value: Clamps 1.2 A surges to ≤246 V within nanoseconds, preserving isolation barrier integrity and avoiding false triggering of logic inputs. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from lightning-induced surges on twisted-pair cabling in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after gas discharge tube (GDT) primary protection to handle residual fast-rising transients. Use Value: Fast response time and low clamping voltage ensure compliance with ITU-T K.21 basic protection requirements for class B equipment. |
Use Scenario: Suppressing output overvoltage transients caused by transformer ringing or regulator fault conditions in USB-C PD adapters. IC Role / Device Role / Timing Role: Final-stage clamp on secondary-side 20 V output rail to prevent overvoltage stress on connected devices. Use Value: Withstands repeated 400 W pulses without degradation, supporting multi-year product lifetime under real-world surge exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ180CA | Same VWM (154 V), VC = 260 V at 1.1 A, SMB package (larger footprint, higher RθJA = 140 °C/W) | Lower power density; less suitable for space-constrained automotive modules | Select when board layout allows larger pad area and thermal budget permits higher junction rise. |
| 1.5KE180CA | Through-hole TO-204AA (DO-201AE); same VWM/VC specs but 1500 W PPPM rating and higher IFSM (100 A) | Designed for high-energy mains-side protection; incompatible with SMT-only production | Choose only for legacy through-hole designs requiring higher single-pulse energy absorption. |
Compared with SMBJ180CA and 1.5KE180CA, the P4SMA180CAHM3/H delivers optimal balance of AEC-Q101 qualification, halogen-free compliance, and compact SMA packaging - making it the preferred choice for new automotive and industrial SMT designs where reliability, regulatory alignment, and board space are jointly constrained.
Availability
P4SMA180CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interfaces, and consumer power adapter designs requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P4SMA180CAHM3/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 high-reliability and automotive-grade solutions.
The P4SMA series was developed to deliver standardized, AEC-Q101-qualified transient protection in compact surface-mount packages for automotive, industrial, and telecom applications demanding consistent clamping performance and long-term stability.
FAQ
What does the "CA" suffix indicate in P4SMA180CAHM3/H?
The "CA" suffix in P4SMA180CAHM3/H denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., P4SMA180A), this part has no polarity marking and functions identically regardless of voltage polarity - essential for protecting AC-coupled or differential signal paths without external biasing.
Is P4SMA180CAHM3/H qualified for automotive use?
Yes, P4SMA180CAHM3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code structure (HM3 suffix) and documentation. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD verification - meeting requirements for under-hood and body electronics applications such as engine control units, ADAS camera modules, and battery management interfaces.
What is the maximum clamping voltage of P4SMA180CAHM3/H and at what current?
The maximum clamping voltage (VC) of P4SMA180CAHM3/H is 246 V, measured at a peak pulse current (IPPM) of 1.2 A using the standardized 10/1000 µs waveform. This value represents the worst-case voltage imposed on protected circuitry during a transient event and is critical for ensuring downstream ICs remain within their absolute maximum ratings.
How does the HM3 suffix differ from E3 or M3 in P4SMA180CAHM3/H?
The HM3 suffix in P4SMA180CAHM3/H indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from E3 (RoHS-compliant commercial grade) and M3 (halogen-free RoHS-compliant commercial grade). Only HM3 and HE3 variants carry automotive qualification, making HM3 the appropriate choice for safety-critical automotive designs requiring both environmental compliance and reliability validation.
Can P4SMA180CAHM3/H replace P4SMA180A in an existing design?
No, P4SMA180CAHM3/H cannot directly replace P4SMA180A because they differ fundamentally in polarity: P4SMA180A is unidirectional (cathode-marked, forward-biased conduction), while P4SMA180CAHM3/H is bidirectional (no marking, symmetrical clamping). Substitution would require circuit review to confirm whether bidirectional behavior is acceptable - especially in DC-biased signal paths where reverse leakage or forward conduction could disrupt operation.
P4SMA180CAHM3/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):
- 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/H FAQ
1.How can I place an order for P4SMA180CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA180CAHM3/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 P4SMA180CAHM3/H reliable?
The price and inventory of P4SMA180CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA180CAHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA180CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA180CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA180CAHM3/H?
P4SMA180CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA180CAHM3/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 P4SMA180CAHM3/H?
For technical support, including P4SMA180CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA180CAHM3/H requirements.
6.How does Aetrix verify that P4SMA180CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA180CAHM3/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 P4SMA180CAHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA180CAHM3/H?
All P4SMA180CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA180CAHM3/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 P4SMA180CAHM3/H part is unused and in its original packaging.
Return procedure for P4SMA180CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA180CAHM3/H 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 …
