My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA68AHM3/H
- Part No.:
- P4SMA68AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68AHM3/H.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,085
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA68AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping fast-rising ESD and surge transients on power and signal lines. It features a 64.6 V minimum breakdown voltage (VBR), 58.1 V standoff voltage (VWM), 92.0 V maximum clamping voltage (VC) at 4.3 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 power supplies.
For engineers reviewing the P4SMA68AHM3/H datasheet, P4SMA68AHM3/H pinout, P4SMA68AHM3/H application, or P4SMA68AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction, low incremental surge resistance, and verified clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
The P4SMA68AHM3/H operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology for stable breakdown behavior and fast response (<1 ns). Its clamping action begins at VWM = 58.1 V and fully engages at VBR ≥ 64.6 V with 1.0 mA test current, delivering predictable protection against inductive switching transients and lightning-induced surges.
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, enabling reliable operation up to TJ = +150 °C. The device is rated for 40 A non-repetitive forward surge (8.3 ms half-sine) and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 58.1 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown, min) | 64.6 V at 1.0 mA - Confirmed avalanche initiation point; ensures robust overvoltage triggering without premature conduction |
| VC (Clamping, max) | 92.0 V at IPPM = 4.3 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines safe voltage headroom |
| PPPM | 400 W - Sustained transient energy absorption capability under standardized 10/1000 µs waveform |
| IFSM | 40 A - Single-cycle surge current handling (8.3 ms half-sine); supports high-energy inductive load switching events |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments |
| Package | SMA (DO-214AC) - Low-profile surface-mount package with matte tin-plated leads; compatible with automated placement and J-STD-002 soldering |
Pinout & Package
Package: SMA (DO-214AC), molded case meeting UL 94 V-0 flammability rating; cathode indicated by band on body; terminals are matte tin plated and whisker-resistant per JESD 201 Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (reverse-biased operation) | Connected to protected line; conducts during transient to shunt surge current to ground |
| Cathode | Current exit terminal (reverse-biased operation) | Connected to reference (e.g., ground or rail); polarity marking ensures correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for modern automotive and industrial electronics manufacturing |
| 400 W peak pulse power (10/1000 µs) | Provides robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-line, 2 kV line-to-ground) |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for sensitive downstream components |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns or baking requirements |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V automotive power rails from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input. Use Value: Clamps transients to ≤92.0 V, preventing damage to downstream regulators and microcontrollers rated for 36 V absolute max. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted at connector interface to shunt fast transients before reaching op-amp or ADC inputs. Use Value: Sub-1 ns response time limits voltage excursion during 8 kV contact ESD (IEC 61000-4-2), preserving signal integrity. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Protection |
Use Scenario: Safeguarding Ethernet PHY power pins and auxiliary rails in PoE-powered equipment. IC Role / Device Role / Timing Role: Unidirectional TVS on 3.3 V/5 V bias rails adjacent to magnetics and isolation transformers. Use Value: 400 W pulse rating handles induced surges from nearby lightning strikes without degradation over 100,000+ events. |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: TVS across output capacitor to clamp regulator failure or rectifier overshoot. Use Value: 58.1 V standoff allows compatibility with 48 V nominal outputs while clamping faults to safe levels for USB-PD controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68A | Same VWM (58.1 V), identical SMA package, but rated for 400 W only up to 68 V; no AEC-Q101 qualification | Not approved for automotive use; suitable for commercial/industrial designs where qualification is not mandated | Select SMAJ68A when cost sensitivity outweighs automotive qualification requirements and thermal derating above 91 V is not needed |
| 1.5SMC68A | Higher package thermal mass (DO-214AB), 1.5 kW peak power rating, but larger footprint and 150 °C TJ limit same | Used where higher single-pulse energy absorption is required, e.g., mains-connected equipment with high stored inductance | Choose 1.5SMC68A when board space permits and system-level surge tests exceed 400 W single-event capability |
Compared with SMAJ68A and 1.5SMC68A, the P4SMA68AHM3/H uniquely combines AEC-Q101 qualification, halogen-free construction, and optimized 400 W clamping in the compact SMA footprint - making it the preferred choice for space-constrained automotive modules and high-reliability industrial sensors requiring traceable compliance.
Availability
P4SMA68AHM3/H is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface design, and telecom line card protection requiring stable component supply, long-term lifecycle support, and full regulatory documentation.
Supply support for P4SMA68AHM3/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA68AHM3/H belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-speed transient suppression in automotive, industrial, and communications systems where AEC-Q101 compliance and consistent clamping performance are mandatory.
FAQ
What is the clamping voltage of P4SMA68AHM3/H at its rated peak pulse current?
The P4SMA68AHM3/H has a maximum clamping voltage (VC) of 92.0 V at its specified peak pulse current (IPPM) of 4.3 A, measured using the standard 10/1000 µs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuits during surge events and is confirmed in the Vishay P4SMA series datasheet revision 09-Jan-2024, page 2.
Is P4SMA68AHM3/H qualified for automotive applications?
Yes, the P4SMA68AHM3/H is AEC-Q101 qualified, as indicated by the "HM3" suffix and documented in the Vishay P4SMA series datasheet. This qualification covers stress tests including temperature cycling, high-temperature operating life, and ESD robustness - confirming suitability for under-hood and chassis-mounted automotive electronics where reliability under harsh conditions is critical.
What does the "HM3" suffix mean in P4SMA68AHM3/H?
The "HM3" suffix in P4SMA68AHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" indicates packaging in 7-inch tape-and-reel (1800 units), and "M3" specifies the halogen-free material set. This distinguishes it from commercial-grade "E3" or non-automotive "M3" variants, ensuring compliance with both environmental and automotive reliability standards.
Can P4SMA68AHM3/H be used in bidirectional configurations?
No, P4SMA68AHM3/H is a unidirectional TVS diode, as confirmed by its part number structure (no "CA" suffix) and electrical specifications listing only VWM, VBR, and VC for reverse-bias operation. Bidirectional versions require the "CA" suffix (e.g., P4SMA68CA), which provides symmetrical clamping in both polarities - a function not supported by the P4SMA68AHM3/H.
What is the maximum operating junction temperature for P4SMA68AHM3/H?
The P4SMA68AHM3/H has a maximum operating junction temperature (TJ) of +150 °C, as specified in the Vishay P4SMA series datasheet under "Maximum Ratings." This rating enables deployment in high-ambient environments such as engine control units, motor drives, and industrial PLCs where thermal management margins are constrained.
P4SMA68AHM3/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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 4.3A
- 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)
P4SMA68AHM3/H FAQ
1.How can I place an order for P4SMA68AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68AHM3/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 P4SMA68AHM3/H reliable?
The price and inventory of P4SMA68AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA68AHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA68AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68AHM3/H?
P4SMA68AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68AHM3/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 P4SMA68AHM3/H?
For technical support, including P4SMA68AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68AHM3/H requirements.
6.How does Aetrix verify that P4SMA68AHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA68AHM3/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 P4SMA68AHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA68AHM3/H?
All P4SMA68AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68AHM3/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 P4SMA68AHM3/H part is unused and in its original packaging.
Return procedure for P4SMA68AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA68AHM3/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 …
