My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA7.5CAHM3/I
- Part No.:
- P4SMA7.5CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA7.5CAHM3/I.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,579
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA7.5CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 7.13 V minimum breakdown voltage (VBR), 6.40 V standoff voltage (VWM), 11.3 V maximum clamping voltage (VC) at 35.4 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P4SMA7.5CAHM3/I datasheet, P4SMA7.5CAHM3/I pinout, P4SMA7.5CAHM3/I application, or P4SMA7.5CAHM3/I 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 standard PCB pad layouts.
Technical Context
The P4SMA7.5CAHM3/I operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), enabling protection against ESD, lightning-induced surges, and inductive switching spikes.
Rated for 150 °C maximum junction temperature and MSL Level 1 moisture sensitivity, it delivers 400 W peak pulse power (derated to 300 W above 91 V) under 10/1000 µs waveform conditions, with 0.061 %/°C temperature coefficient of VBR and 120 °C/W junction-to-ambient thermal resistance on standard 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 6.40 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Min/Max) | 7.13 V / 7.88 V at 10 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 11.3 V at 35.4 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 400 W - Peak pulse power handling capacity; supports robust protection against repetitive transients in automotive and industrial environments. |
| IPPM | 35.4 A - Peak pulse current capability; defines surge current limit before device failure under standardized test waveform. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and high-temperature industrial enclosures. |
| Package | SMA (DO-214AC) - Standardized surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height; compatible with JEDEC MS-013. |
Pinout & Package
SMA (DO-214AC) package: molded plastic body with matte tin-plated leads, no polarity marking for bidirectional configuration, compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive polarity) | One terminal of symmetrical avalanche junction; conducts during positive transients relative to cathode reference. |
| Cathode | Transient current entry point (negative polarity) | Second terminal of symmetrical junction; conducts during negative transients - functionally identical to anode in bidirectional mode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns or external circuit inversion. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias HAST, and mechanical shock per JESD22 standards. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declarations; supports green manufacturing and end-of-life recycling requirements. |
| 400 W peak pulse power | Handles high-energy transients from inductive load switching (e.g., solenoids, relays) without degradation in industrial motor drives. |
| MSL Level 1 rating | Allows unlimited floor life and reflow soldering at peak temperature up to 260 °C without preconditioning or baking. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector interface to shunt surge energy before reaching signal conditioning circuitry. Use Value: Maintains signal integrity by limiting transient voltage to ≤11.3 V, preventing latch-up or permanent damage to 5 V or 3.3 V microcontrollers and ADC front-ends. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-wiring induced surges and ground loop transients. IC Role / Device Role / Timing Role: Standoff-clamp device mounted adjacent to terminal block to absorb 1 kV/500 A surge events per IEC 61000-4-5 Level 4. Use Value: Enables >100,000 surge cycles without parameter drift due to glass-passivated junction stability and low incremental surge resistance. |
| Consumer Power Adapter ESD Protection | Telecom Line Interface Protection |
|
Use Scenario: Suppressing ESD events (IEC 61000-4-2 ±8 kV contact) on USB, HDMI, or Ethernet ports of smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed between connector and PHY IC to divert ESD current away from sensitive silicon. Use Value: Sub-1 ns response time limits voltage overshoot to <12 V, meeting USB-IF and HDMI compliance margins for signal integrity preservation. |
Use Scenario: Protecting DSL or PoE line drivers from lightning-induced surges on outdoor telecom infrastructure equipment. IC Role / Device Role / Timing Role: Primary-level surge protector installed at line entry point, coordinated with secondary GDT or MOV stages. Use Value: 400 W peak power rating supports coordination with upstream protectors while maintaining low clamping voltage for semiconductor safety. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA | Higher VWM (6.0 V), lower VC (11.2 V), same SMA package but SMB (DO-214AA) footprint - requires PCB layout change. | Designed for higher-reliability telecom surge standards (GR-1089); tighter VBR tolerance (±5 % vs. ±5.5 %). | Select when lower clamping voltage and tighter VBR tolerance are critical, and board redesign is acceptable. |
| 1.5KE7.5CA | Through-hole TO-204AE (DO-15) package, 1500 W PPPM, higher VC (12.9 V), not AEC-Q101 qualified. | Used in legacy industrial power supplies where manual assembly and higher surge margin outweigh SMT constraints. | Choose only for through-hole prototyping or cost-sensitive non-automotive applications where AEC-Q101 is not required. |
Compared with SMBJ7.0CA and 1.5KE7.5CA, the P4SMA7.5CAHM3/I offers optimal balance of AEC-Q101 qualification, halogen-free compliance, and compact SMA footprint - making it preferred for new automotive and high-volume industrial designs requiring automated assembly and long-term supply continuity.
Availability
P4SMA7.5CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and consumer power adapter designs requiring stable component supply, halogen-free compliance, and AEC-Q101 reliability validation.
Supply support for P4SMA7.5CAHM3/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 performance.
The P4SMA series is engineered for high-reliability transient suppression in automotive, industrial, and communications systems - delivering consistent clamping behavior, low leakage, and robust surge endurance in compact surface-mount packages.
FAQ
What is the clamping voltage of P4SMA7.5CAHM3/I at its rated peak pulse current?
The P4SMA7.5CAHM3/I has a maximum clamping voltage (VC) of 11.3 V at its rated peak pulse current (IPPM) of 35.4 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88367 and defines the upper voltage limit imposed on protected circuitry during surge events. The P4SMA7.5CAHM3/I maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is P4SMA7.5CAHM3/I suitable for automotive applications?
Yes, the P4SMA7.5CAHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It meets stress test requirements including temperature cycling, unbiased HAST, and mechanical shock per JESD22 standards. The P4SMA7.5CAHM3/I is explicitly recommended for engine control units, body electronics, and ADAS sensor interfaces where transient immunity and long-term reliability are mandatory.
What does the "CA" suffix mean in P4SMA7.5CAHM3/I?
The "CA" suffix in P4SMA7.5CAHM3/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities without cathode band marking. This distinguishes it from unidirectional variants (e.g., P4SMA7.5AHM3/I), which require correct polarity orientation during placement. The P4SMA7.5CAHM3/I is electrically identical in both directions, simplifying layout and eliminating polarity-related assembly errors.
What is the thermal resistance of P4SMA7.5CAHM3/I from junction to lead?
The P4SMA7.5CAHM3/I has a typical thermal resistance from junction to lead (RθJL) of 30 °C/W, as specified in Vishay document 88367, Section "THERMAL CHARACTERISTICS". This low value enables efficient heat transfer to PCB copper pads during repetitive surge events, supporting reliable operation at elevated ambient temperatures. The P4SMA7.5CAHM3/I achieves this via direct die-to-lead construction and optimized internal metallization.
How does the P4SMA7.5CAHM3/I compare to P4SMA7.5AHE3/I in terms of compliance and qualification?
The P4SMA7.5CAHM3/I is halogen-free, RoHS-compliant, and AEC-Q101 qualified, whereas the P4SMA7.5AHE3/I is RoHS-compliant and AEC-Q101 qualified but not halogen-free. Both share identical electrical parameters (VWM, VBR, VC, PPPM) and SMA packaging. The P4SMA7.5CAHM3/I meets stricter environmental mandates such as IEC 61249-2-21 and IPC-1752A for halogen content, making it preferred for green electronics programs and export markets with halogen restrictions.
P4SMA7.5CAHM3/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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 35.4A
- 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)
P4SMA7.5CAHM3/I FAQ
1.How can I place an order for P4SMA7.5CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA7.5CAHM3/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 P4SMA7.5CAHM3/I reliable?
The price and inventory of P4SMA7.5CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA7.5CAHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA7.5CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA7.5CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA7.5CAHM3/I?
P4SMA7.5CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA7.5CAHM3/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 P4SMA7.5CAHM3/I?
For technical support, including P4SMA7.5CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA7.5CAHM3/I requirements.
6.How does Aetrix verify that P4SMA7.5CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA7.5CAHM3/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 P4SMA7.5CAHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA7.5CAHM3/I?
All P4SMA7.5CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA7.5CAHM3/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 P4SMA7.5CAHM3/I part is unused and in its original packaging.
Return procedure for P4SMA7.5CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA7.5CAHM3/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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
