My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P4SMA68CAHE3_A/H
- Part No.:
- P4SMA68CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA68CAHE3_A/H.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,092
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4SMA68CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMA (DO-214AC) package, rated for 68 V breakdown voltage (VBR = 64.6–71.4 V at 1 mA), 92 V maximum clamping voltage (VC) at 4.3 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform). It delivers AEC-Q101 qualification and is used to protect automotive sensor signal lines, industrial I/O ports, and telecom interface circuits against ESD and inductive switching transients.
For engineers reviewing the P4SMA68CAHE3_A/H datasheet, P4SMA68CAHE3_A/H pinout, P4SMA68CAHE3_A/H application, or P4SMA68CAHE3_A/H equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.35), AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), and compatibility with automated SMT placement on standard 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), while the low incremental surge resistance enables effective energy diversion during transient events.
The device is rated for 400 W peak pulse power (10/1000 μs) up to 91 V and derates to 300 W above that threshold. It supports continuous power dissipation of 3.3 W at 50 °C ambient on an infinite heatsink and withstands operating junction temperatures from –65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1 mA - defines precise voltage threshold where clamping initiates under controlled test conditions |
| VWM | 58.1 V - maximum continuous working voltage before leakage exceeds 1 μA; sets safe operating margin below VBR |
| VC @ IPPM | 92 V at 4.3 A - clamped voltage seen by protected circuit during worst-case 10/1000 μs surge; determines downstream component stress |
| PPPM | 400 W (≤91 V), 300 W (>91 V) - peak transient energy handling capacity; defines protection level for lightning/inductive spikes |
| IPPM | 4.3 A - maximum non-repetitive surge current the device passes while maintaining VC ≤ 92 V |
| TJ max. | +150 °C - maximum junction temperature; constrains PCB layout and thermal pad design for reliability |
| RθJA | 120 °C/W - thermal resistance from junction to ambient; informs derating requirements for sustained power dissipation |
Pinout & Package
SMA (DO-214AC) surface-mount package with matte tin-plated leads, compliant with J-STD-002 and JESD 22-B102 solderability standards. No polarity marking on bidirectional variants; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | One terminal of symmetrical junction; accepts surge current regardless of direction |
| Cathode | Transient current entry (either polarity) | Second terminal of symmetrical junction; completes bidirectional conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates polarity concerns in AC-coupled or floating signal lines |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD - suitable for under-hood and ADAS sensor interfaces |
| Low-profile SMA package | DO-214AC outline (5.28 mm × 4.50 mm × 2.29 mm) - enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment |
| Glass passivated junction | Stable VBR tolerance (±5%) and low leakage (<1 μA at VWM) - ensures consistent clamping performance over lifetime and temperature |
| 400 W peak pulse rating | Rated per 10/1000 μs waveform on 0.2" × 0.2" copper pads - provides robust protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) |
Applications
| Automotive Sensor Protection | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal line and ground to shunt transients before they reach sensitive input stages. Use Value: Maintains signal integrity during 100 V/50 ms load dump events while limiting clamped voltage to 92 V - within absolute maximum ratings of most automotive-grade transceivers. |
Use Scenario: Safeguarding PLC digital input modules from field-wiring induced surges caused by relay coil de-energization or motor contactor switching. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor across input terminals to absorb inductive kickback energy before it damages optocoupler inputs or microcontroller GPIOs. Use Value: Withstands 400 W pulses and clamps to 92 V, preventing latch-up or permanent damage to 24 V-rated industrial logic inputs. |
| Telecom Line Interface Protection | Consumer USB/Display Port ESD Guard |
|
Use Scenario: Shielding RS-485/RS-232 transceiver pins in base station backhaul equipment from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed differential-mode across data lines to suppress common-mode transients without distorting signal edges. Use Value: Clamping ratio of 1.35 (92 V / 68 V nominal) ensures protected ICs experience <100 V stress - well below typical 125 V absolute max ratings of RS-485 drivers. |
Use Scenario: Adding secondary-level ESD protection on USB 2.0 D+/D– or DisplayPort AUX channel traces in laptops and docking stations. IC Role / Device Role / Timing Role: Fast-response TVS placed adjacent to connector to divert >8 kV HBM ESD strikes before reaching USB PHY or display controller ESD diodes. Use Value: Sub-1 ns response time and 92 V clamping prevent system lockup or data corruption during real-world ESD events per IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ68CA | Higher package thermal mass (SMB/DO-214AA); RθJA = 85 °C/W; same VBR/VC specs but 600 W PPPM | Better suited for higher-duty-cycle surge environments; requires larger PCB pad area | Select when board space allows larger footprint and higher sustained surge energy is expected |
| 1.5KE68CA | Through-hole DO-15 package; 1500 W PPPM; higher VC = 112 V; slower response due to lead inductance | Designed for primary-level AC/DC input protection; not suitable for high-speed signal lines | Choose only for cost-sensitive, non-SMT legacy designs where PCB layout permits axial-leaded components |
Compared with SMBJ68CA and 1.5KE68CA, P4SMA68CAHE3_A/H offers optimal balance of compact SMT form factor, AEC-Q101 qualification, and sufficient 400 W surge handling for secondary-level signal-line protection - making it preferred for space-constrained automotive and industrial edge nodes.
Availability
P4SMA68CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line driver protection requiring stable component supply, RoHS compliance, and AEC-Q101 traceability.
Supply support for P4SMA68CAHE3_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, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and automotive-grade validation.
The P4SMA Series was developed specifically for surface-mount transient suppression in space-constrained, high-reliability applications - combining AEC-Q101 qualification, low-profile packaging, and consistent clamping performance across temperature and life cycle.
FAQ
What does the "CA" suffix indicate in P4SMA68CAHE3_A/H?
The "CA" suffix in P4SMA68CAHE3_A/H denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities. Unlike unidirectional variants (e.g., P4SMA68A), this part has no cathode band marking and exhibits identical breakdown, clamping, and leakage characteristics whether voltage is applied anode-to-cathode or cathode-to-anode - essential for protecting AC-coupled or floating signal paths.
Is P4SMA68CAHE3_A/H qualified for automotive use?
Yes, P4SMA68CAHE3_A/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's P4SMA series datasheet (Rev. 09-Jan-2024, Doc. #88367). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD - validating its suitability for automotive applications such as body control modules, ADAS sensors, and infotainment interfaces where reliability under harsh environmental conditions is mandatory.
What is the maximum clamping voltage of P4SMA68CAHE3_A/H and how is it measured?
The maximum clamping voltage (VC) of P4SMA68CAHE3_A/H is 92 V, measured at a peak pulse current (IPPM) of 4.3 A using a standardized 10/1000 μs double-exponential waveform. This value represents the highest voltage the device allows across its terminals during a transient event - directly determining the stress imposed on downstream components like transceivers or microcontrollers, and confirming compliance with IEC 61000-4-5 surge immunity requirements.
How does the SMA (DO-214AC) package of P4SMA68CAHE3_A/H affect thermal performance?
The SMA (DO-214AC) package of P4SMA68CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on minimum recommended 0.2" × 0.2" copper pads. This limits continuous power dissipation to 3.3 W at 50 °C ambient, and requires careful PCB layout - including adequate copper pour and thermal vias - to manage junction temperature during repetitive surge events or elevated ambient conditions in enclosed enclosures.
Can P4SMA68CAHE3_A/H replace P4SMA68A in a design?
No, P4SMA68CAHE3_A/H cannot directly replace P4SMA68A because they differ fundamentally in polarity: P4SMA68A is unidirectional (cathode-marked, conducts only in reverse bias), while P4SMA68CAHE3_A/H is bidirectional (no marking, symmetrical conduction). Substituting without circuit review risks incorrect clamping behavior - especially in DC-biased signal paths - and may violate safety margins defined in the original design. Always verify polarity requirements and clamping thresholds before interchange.
P4SMA68CAHE3_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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA68CAHE3_A/H FAQ
1.How can I place an order for P4SMA68CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA68CAHE3_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 P4SMA68CAHE3_A/H reliable?
The price and inventory of P4SMA68CAHE3_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 P4SMA68CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P4SMA68CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA68CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA68CAHE3_A/H?
P4SMA68CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA68CAHE3_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 P4SMA68CAHE3_A/H?
For technical support, including P4SMA68CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA68CAHE3_A/H requirements.
6.How does Aetrix verify that P4SMA68CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA68CAHE3_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 P4SMA68CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P4SMA68CAHE3_A/H?
All P4SMA68CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA68CAHE3_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 P4SMA68CAHE3_A/H part is unused and in its original packaging.
Return procedure for P4SMA68CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA68CAHE3_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
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 …
