My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA150CAHM3/I
- Part No.:
- P4SMA150CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA150CAHM3/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,310
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA150CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 150 V standoff voltage (VWM), 165 V minimum breakdown voltage (VBR), 207 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P4SMA150CAHM3/I datasheet, P4SMA150CAHM3/I pinout, P4SMA150CAHM3/I application, or P4SMA150CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and thermal resistance (RθJA = 120 °C/W) for board-level surge protection design.
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).
The device delivers 400 W peak pulse power under 10/1000 µs waveform at TA = 25 °C, derating to 300 W above 91 V; clamps transients to ≤207 V at 207 A, with fast response time (<1.0 ns) and low incremental surge resistance for effective overvoltage suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - maximum continuous reverse working voltage before clamping initiates |
| VBR (Breakdown Voltage) | 165–183 V at IT = 1 mA - guaranteed conduction threshold for transient suppression |
| VC (Clamping Voltage) | 207 V at IPPM = 207 A - peak voltage seen by protected circuit during worst-case surge |
| PPPM (Peak Pulse Power) | 400 W (10/1000 µs) - surge energy handling capacity on standard test waveform |
| ID (Reverse Leakage) | ≤1.0 µA at VWM - minimal standby current that avoids signal integrity degradation |
| TJ max. | 150 °C - maximum junction temperature supporting operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress-test requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads; meets UL 94 V-0, MSL level 1, JESD 201 class 2 whisker resistance, and RoHS/halogen-free compliance (HM3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No marking - symmetrical terminals enable polarity-agnostic placement on PCB |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | No marking - identical physical terminal as Anode; bidirectional operation eliminates cathode band requirement |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC, differential, or floating signal lines without polarity constraints |
| 400 W peak pulse power | Handles high-energy transients from inductive switching or ESD events in compact SMA footprint |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| Low profile SMA package | 0.208" × 0.157" (5.28 mm × 3.99 mm) footprint supports automated SMT assembly and space-constrained layouts |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed at connector interface or IC input pins. Use Value: Limits transient voltage to ≤207 V while maintaining <1.0 µA leakage at 150 V system rail, preserving signal fidelity. |
Use Scenario: Safeguarding digital input/output channels in programmable logic controllers against field-induced surges and relay contact bounce. IC Role / Device Role / Timing Role: Primary line-level surge suppressor mounted adjacent to terminal blocks or optocoupler inputs. Use Value: Absorbs 400 W pulses without degradation, enabling >100,000 surge cycles per MIL-STD-883H Method 3015.7. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHY magnetics and PoE injector outputs from lightning-induced surges and EFT bursts. IC Role / Device Role / Timing Role: Secondary-stage TVS after gas discharge tube (GDT), providing fast-response clamping. Use Value: Sub-1 ns response time captures fast-rising edges missed by slower primary protectors, reducing residual voltage stress. |
Use Scenario: Clamping output ripple and transient spikes on 12–24 V DC adapters powering smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Final-stage overvoltage limiter downstream of DC-DC converter and LDO regulators. Use Value: Halogen-free HM3 construction meets IEC 62368-1 flammability and environmental compliance for end-user products. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Higher RθJA (140 °C/W), larger SMB (DO-214AA) package, same VWM/VBR range | Lower power density; requires larger PCB area but offers higher mechanical robustness | Select when board layout allows larger footprint and thermal management prioritizes mechanical stability over miniaturization |
| 1.5KE150CA | Through-hole DO-201 package, 1500 W PPPM rating, higher capacitance (~100 pF) | Not suitable for high-speed data lines; intended for bulk power rail protection only | Choose for legacy through-hole designs or where higher surge energy absorption outweighs SMT compatibility needs |
Compared with SMBJ150CA and 1.5KE150CA, P4SMA150CAHM3/I provides optimal balance of miniaturized SMA packaging, AEC-Q101 qualification, and 400 W surge capability - making it preferred for space-constrained, automotive-grade, and high-volume SMT production environments.
Availability
P4SMA150CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply, halogen-free compliance, and AEC-Q101 reliability validation.
Supply support for P4SMA150CAHM3/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 applications across automotive, industrial, and communications markets - engineered for rapid transient response, consistent clamping, and seamless SMT integration.
FAQ
What is the clamping voltage of P4SMA150CAHM3/I at its rated peak pulse current?
The clamping voltage (VC) of P4SMA150CAHM3/I is 207 V at its peak pulse current (IPPM) of 207 A, measured under the standardized 10/1000 µs double-exponential waveform. This value defines the maximum voltage imposed on the protected circuit during a full-rated surge event and is confirmed in the Electrical Characteristics table on page 2 of the Vishay datasheet (Doc. #88367). P4SMA150CAHM3/I maintains this performance across its operating temperature range when mounted per recommended pad layout.
Is P4SMA150CAHM3/I suitable for automotive applications?
Yes, P4SMA150CAHM3/I is AEC-Q101 qualified - explicitly stated in the "FEATURES" section and ordering information of the Vishay datasheet. The HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction, validated for use in automotive subsystems including body control modules, infotainment interfaces, and sensor signal conditioning. P4SMA150CAHM3/I meets stress-test requirements for temperature cycling, humidity, and mechanical shock per AEC-Q101 Rev D.
What does the "CA" suffix indicate in P4SMA150CAHM3/I?
The "CA" suffix in P4SMA150CAHM3/I designates a bidirectional Transient Voltage Suppressor - meaning it functions identically in both polarities, with no anode/cathode distinction required during placement. This is confirmed in the "DEVICES FOR BIDIRECTION APPLICATIONS" section of the Vishay datasheet, which states "For bidirectional devices use CA suffix (e.g. P4SMA10CA)" and clarifies that "Electrical characteristics apply in both directions." P4SMA150CAHM3/I thus protects AC-coupled lines, differential buses, or floating nodes without orientation constraints.
What is the thermal resistance of P4SMA150CAHM3/I, and how does it affect PCB layout?
P4SMA150CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the Thermal Characteristics table. This value assumes minimum recommended pad layout; reducing pad area increases RθJA and risks exceeding TJ max. of 150 °C during repetitive surges. P4SMA150CAHM3/I must be placed with adequate copper pour and avoid thermal isolation to sustain its 400 W pulse rating in real-world conditions.
How does the HM3 suffix differ from E3 or M3 in P4SMA150CAHM3/I?
The HM3 suffix in P4SMA150CAHM3/I indicates halogen-free, RoHS-compliant, and AEC-Q101 qualified construction - distinct from E3 (RoHS-compliant commercial grade) and M3 (halogen-free RoHS-compliant commercial grade). Per the "MECHANICAL DATA" section, HM3 parts meet JESD 201 class 2 whisker testing and are designated for automotive use. P4SMA150CAHM3/I is therefore certified for mission-critical automotive applications where both environmental compliance and reliability validation are mandatory.
P4SMA150CAHM3/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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- 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)
P4SMA150CAHM3/I FAQ
1.How can I place an order for P4SMA150CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA150CAHM3/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 P4SMA150CAHM3/I reliable?
The price and inventory of P4SMA150CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA150CAHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA150CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA150CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA150CAHM3/I?
P4SMA150CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA150CAHM3/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 P4SMA150CAHM3/I?
For technical support, including P4SMA150CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA150CAHM3/I requirements.
6.How does Aetrix verify that P4SMA150CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA150CAHM3/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 P4SMA150CAHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA150CAHM3/I?
All P4SMA150CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA150CAHM3/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 P4SMA150CAHM3/I part is unused and in its original packaging.
Return procedure for P4SMA150CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA150CAHM3/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 …
