My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA68CAHM3_A/H
- Part No.:
- P4SMA68CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68CAHM3_A/H.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,636
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA68CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features 68 V breakdown voltage (VBR = 64.6–71.4 V at IT = 1.0 mA), 58.1 V standoff voltage (VWM), and 92.0 V maximum clamping voltage (VC) at 4.3 A peak pulse current (IPPM), delivering 400 W peak pulse power with 10/1000 µs waveform - suitable for protecting automotive sensor interfaces and industrial I/O lines.
For engineers reviewing the P4SMA68CAHM3_A/H datasheet, P4SMA68CAHM3_A/H pinout, P4SMA68CAHM3_A/H application, or P4SMA68CAHM3_A/H 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 assembly on standard 0.2" × 0.2" copper pads.
Technical Context
The P4SMA68CAHM3_A/H 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), while the low incremental surge resistance enables effective energy diversion during ESD or lightning-induced surges.
Rated for 150 °C maximum junction temperature and MSL Level 1 (peak reflow 260 °C), it supports automotive-grade reliability per AEC-Q101 and meets UL 94 V-0 flammability requirements. The device delivers 400 W peak pulse power up to 91 V and derates to 300 W above that threshold, with thermal resistance RθJA = 120 °C/W under standard pad layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at IT = 1.0 mA - defines precise clamping onset threshold in both directions |
| VWM | 58.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 92.0 V at 4.3 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - peak transient power handling capacity, enabling robust protection against IEC 61000-4-5 surges |
| IPPM | 4.3 A - maximum non-repetitive surge current supported with defined clamping performance |
| TJ max. | +150 °C - allows operation in under-hood automotive environments and high-ambient industrial settings |
| Package | SMA (DO-214AC) - industry-standard SMT footprint compatible with automated placement and reflow |
Pinout & Package
SMA (DO-214AC) package: surface-mount, molded plastic case 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 return path (bidirectional) | One terminal of symmetrical avalanche junction; connects to protected line or ground reference |
| Cathode | Transient return path (bidirectional) | Second terminal of symmetrical avalanche junction; functionally identical to Anode in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for EU, China RoHS, and JEDEC J-STD-204 |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without preconditioning or dry-pack requirements |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 (4 kV) surge events on 50 Ω source impedance lines |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Clamps transients to ≤92.0 V while maintaining <1 µA leakage at 58.1 V, preserving signal integrity and preventing latch-up in downstream ASICs. |
Use Scenario: Safeguarding PLC digital input channels exposed to inductive switching noise from solenoids or relays. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on field-side signal traces before optocoupler or level-shifter inputs. Use Value: Absorbs 400 W surge energy within nanoseconds, limiting voltage overshoot to prevent false triggering or damage to microcontroller GPIOs. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side surge protection on Ethernet PHY or RS-485 transceiver bus lines in network equipment. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp placed between data pair and chassis ground. Use Value: Provides symmetrical clamping without affecting signal rise/fall times due to minimal parasitic capacitance (typ. <100 pF at VWM). |
Use Scenario: Input-stage transient suppression on 12 V DC output rails of wall-mounted AC/DC adapters. IC Role / Device Role / Timing Role: Final-line defense after primary MOV and fuse, absorbing residual surges missed by upstream components. Use Value: Maintains 58.1 V operating margin below 68 V nominal system rail, ensuring no conduction during normal operation while reacting within <1 ns to spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | Higher VBR (60.8–67.2 V), larger SMB package (DO-214AA), 600 W PPPM | Requires larger PCB area; better suited for higher-energy surges where space permits | Select when needing >400 W surge rating and board layout accommodates SMB footprint |
| 1.5KE68CA | Through-hole DO-201 package, same VBR/VC, 1500 W PPPM, higher IPPM (21.7 A) | Not SMT-compatible; used in legacy or high-reliability through-hole designs | Choose only for through-hole assembly or where mechanical robustness outweighs SMT automation benefits |
Compared with SMBJ64CA and 1.5KE68CA, the P4SMA68CAHM3_A/H offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W surge capability - making it preferred for space-constrained automotive and industrial SMT designs requiring certified reliability.
Availability
P4SMA68CAHM3_A/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 long-term lifecycle support.
Supply support for P4SMA68CAHM3_A/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-sensitive, high-volume transient suppression needs in automotive, industrial, and consumer electronics - engineered for automated assembly, AEC-Q101 compliance, and consistent clamping performance across temperature and life cycle.
FAQ
What is the polarity configuration of P4SMA68CAHM3_A/H?
The P4SMA68CAHM3_A/H is a bidirectional TVS diode, meaning it provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants (e.g., P4SMA68A), it has no cathode band marking and functions identically regardless of voltage polarity applied across its terminals - essential for protecting AC-coupled or floating signal paths where polarity is undefined.
Does P4SMA68CAHM3_A/H meet automotive qualification standards?
Yes, P4SMA68CAHM3_A/H is AEC-Q101 qualified, as indicated by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). This certification validates its reliability for automotive applications including engine control units, body electronics, and ADAS sensor interfaces under extended temperature cycling, humidity, and mechanical stress conditions.
What is the maximum clamping voltage of P4SMA68CAHM3_A/H under surge conditions?
The maximum clamping voltage (VC) of P4SMA68CAHM3_A/H is 92.0 V at 4.3 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value represents the upper limit of voltage seen by downstream circuitry during a standardized surge event, ensuring protected ICs remain within safe operating voltage margins.
How does the SMA (DO-214AC) package of P4SMA68CAHM3_A/H compare to SMB or SMC packages?
The SMA package of P4SMA68CAHM3_A/H measures 4.50 mm × 3.99 mm with 2.54 mm lead spacing - smaller than SMB (DO-214AA) and significantly smaller than SMC (DO-214AB). This enables higher board density in space-constrained applications, though with lower thermal mass than larger packages; thermal design must account for RθJA = 120 °C/W on standard 0.2" × 0.2" copper pads.
Is P4SMA68CAHM3_A/H compatible with lead-free reflow soldering processes?
Yes, P4SMA68CAHM3_A/H is rated MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, fully compatible with standard lead-free soldering profiles. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability requirements, and the molding compound complies with UL 94 V-0 flammability standards.
P4SMA68CAHM3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
P4SMA68CAHM3_A/H FAQ
1.How can I place an order for P4SMA68CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68CAHM3_A/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 P4SMA68CAHM3_A/H reliable?
The price and inventory of P4SMA68CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA68CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA68CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68CAHM3_A/H?
P4SMA68CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68CAHM3_A/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 P4SMA68CAHM3_A/H?
For technical support, including P4SMA68CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68CAHM3_A/H requirements.
6.How does Aetrix verify that P4SMA68CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA68CAHM3_A/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 P4SMA68CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA68CAHM3_A/H?
All P4SMA68CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68CAHM3_A/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 P4SMA68CAHM3_A/H part is unused and in its original packaging.
Return procedure for P4SMA68CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA68CAHM3_A/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
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…
