My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC68CAHE3_A/H
- Part No.:
- 1.5SMC68CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68CAHE3_A/H.pdf
- Description:
- TVS DIODE 58.1VWM 92VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,646
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC68CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 μs), 68 V breakdown voltage (VBR = 64.6–71.4 V at IT = 1.0 mA), and clamping voltage of 92.0 V at 16.3 A. It protects signal lines and power rails in automotive sensor units, industrial control interfaces, and telecom equipment against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC68CAHE3_A/H datasheet, 1.5SMC68CAHE3_A/H pinout, 1.5SMC68CAHE3_A/H application, or 1.5SMC68CAHE3_A/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 1500 W surge rating, low clamping ratio (VC/VBR ≈ 1.36), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped crowbar during transient overvoltage events, leveraging an avalanche breakdown junction to divert surge current away from protected circuitry. Its bidirectional symmetry ensures identical clamping performance in both polarities, eliminating polarity-sensitive layout constraints.
Thermal design relies on low RθJL = 15 °C/W (junction-to-leads) and derating per Fig. 2 above TA = 25 °C; maximum junction temperature is 150 °C, and it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at IT = 1.0 mA - defines precise avalanche onset window for reliable triggering without premature conduction. |
| VWM | 58.1 V - maximum continuous reverse operating voltage; ensures no leakage or degradation below this DC or RMS level. |
| VC @ IPPM | 92.0 V at 16.3 A - clamping voltage under 10/1000 μs surge; determines worst-case voltage seen by downstream ICs. |
| PPPM | 1500 W - peak pulse power handling capability; supports robust protection against IEC 61000-4-5 Level 4 surges. |
| IPPM | 16.3 A - peak pulse current capacity; sets minimum trace width and PCB copper area requirements (8.0 mm × 8.0 mm pads). |
| TJ max | 150 °C - maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration with cathode/anode interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (positive half-cycle) | Connects to line being protected; forms one side of bidirectional clamping path. |
| Cathode | Surge current entry (negative half-cycle) | Connects to same line as Anode; completes symmetrical clamping path with Anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware routing or duplicate components. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and ADAS sensor interfaces - supports PPAP and long-term field reliability. |
| 1500 W peak pulse power | Withstands 10/1000 μs waveform at 0.01% duty cycle - meets IEC 61000-4-5 surge immunity requirements for industrial and telecom systems. |
| Low clamping ratio (VC/VBR) | ≈1.36 - minimizes overvoltage stress on protected ICs compared to higher-ratio TVS devices. |
| MSL Level 1 moisture sensitivity | Rated for floor life unlimited at ≤30 °C/85% RH - compatible with standard SMT reflow without baking preconditioning. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to shunt transients before they reach sensitive analog front-ends. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and ADCs during 100 V/100 ms load dump events. |
Use Scenario: Shielding digital input/output channels on programmable logic controllers from induced surges due to relay coil switching and motor drive noise. IC Role / Device Role / Timing Role: Parallel-connected TVS on each I/O line to ground, limiting transient voltage to <92 V within nanoseconds of event onset. Use Value: Maintains functional safety integrity by preventing false triggering or reset of 24 V DC input circuits during repetitive 1 kV/500 A surge events. |
| Telecom Line Interface Protection | Consumer Power Adapter ESD/Surge Guard |
Use Scenario: Safeguarding Ethernet PHYs and PoE injectors against lightning-induced surges on twisted-pair data lines in outdoor network equipment. IC Role / Device Role / Timing Role: Primary-level TVS on RJ45 port side, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: Enables compliance with ITU-T K.21 basic protection level (10/700 μs, 1 kV) while preserving signal integrity up to 100 MHz. |
Use Scenario: Adding secondary-side surge suppression on 12 V DC output rails of wall-mounted AC/DC adapters used in smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Final-stage clamping device between regulator output and USB/UART connectors to absorb residual transients escaping primary-side MOVs. Use Value: Reduces field failure rate from ESD and fast transient bursts (<100 ns rise time) that bypass bulk capacitance filtering. |
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 | Lower PPPM = 600 W; same VBR range (60.8–67.2 V); SMB package (smaller footprint, higher thermal resistance). | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use where automotive reliability is not required. | Select when board space is constrained and surge energy is ≤600 W; verify thermal margin with RθJA = 110 °C/W. |
| 1.5KE68CA | Through-hole TO-204AA (DO-41); same VBR and PPPM; slower response due to higher parasitic inductance. | Used in legacy designs or prototyping where manual assembly or socketing is preferred; incompatible with automated SMT lines. | Choose only for repair, replacement, or non-SMT production; avoid in new high-speed or high-density designs. |
Compared with SMBJ64CA and 1.5KE68CA, the 1.5SMC68CAHE3_A/H delivers higher surge robustness in a compact SMT package with automotive-grade qualification-making it optimal for next-generation automotive ECUs, industrial edge controllers, and telecom infrastructure requiring both miniaturization and field reliability.
Availability
1.5SMC68CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply, AEC-Q101 compliance, and 1500 W transient immunity.
Supply support for 1.5SMC68CAHE3_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 1.5SMC Series was engineered for high-power, surface-mount transient suppression in harsh environments-targeting automotive, industrial, and telecom applications demanding AEC-Q101 validation and repeatable clamping performance.
FAQ
What is the clamping voltage of the 1.5SMC68CAHE3_A/H under maximum surge conditions?
The 1.5SMC68CAHE3_A/H has a maximum clamping voltage (VC) of 92.0 V at its rated peak pulse current (IPPM) of 16.3 A, measured with a 10/1000 μs waveform. This value represents the upper limit of voltage imposed on protected circuitry during a full-rated surge event and is critical for ensuring downstream ICs remain within their absolute maximum ratings. The 1.5SMC68CAHE3_A/H achieves this with a clamping ratio of approximately 1.36 relative to its nominal breakdown voltage.
Is the 1.5SMC68CAHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC68CAHE3_A/H is AEC-Q101 qualified, as indicated by the "HE3" suffix and documented in Vishay's 1.5SMC series specification (Document Number: 88303). It undergoes rigorous stress testing-including temperature cycling, high-temperature reverse bias, and ESD-to meet automotive reliability requirements. The 1.5SMC68CAHE3_A/H is commonly deployed in engine control units, body control modules, and ADAS sensor interfaces where sustained operation at 150 °C junction temperature and immunity to load dump transients are mandatory.
How does the bidirectional design of the 1.5SMC68CAHE3_A/H affect PCB layout?
The 1.5SMC68CAHE3_A/H has no polarity marking and exhibits identical electrical characteristics in both directions, allowing placement across any two nodes without orientation constraints. This simplifies layout by eliminating cathode/anode alignment checks and enables symmetric routing on differential lines (e.g., CAN, RS-485) or AC-coupled paths. Unlike unidirectional TVS diodes, the 1.5SMC68CAHE3_A/H requires no ground reference on either terminal-both leads connect directly to the protected line(s)-reducing net count and layout complexity.
What is the recommended PCB pad layout for the 1.5SMC68CAHE3_A/H?
Vishay specifies a minimum pad layout of 0.31" × 0.31" (8.0 mm × 8.0 mm) copper area per terminal for the 1.5SMC68CAHE3_A/H to achieve rated 1500 W pulse power dissipation. These pads must be solid, unslotted, and thermally connected to internal ground/power planes via multiple vias if possible. The 1.5SMC68CAHE3_A/H datasheet (Fig. 2 and Table "Maximum Ratings") confirms that derating begins above TA = 25 °C unless this copper area is maintained-underscoring that pad size directly governs thermal survival during repetitive surges.
Does the 1.5SMC68CAHE3_A/H have a specified junction capacitance?
No, the 1.5SMC68CAHE3_A/H datasheet does not specify junction capacitance (CJ) for this variant. While Figure 4 provides typical CJ curves for unidirectional 1.5SMC devices (e.g., ~200 pF at 0 V for 1.5SMC68A), bidirectional types like the 1.5SMC68CAHE3_A/H are not characterized for capacitance in the official Vishay documentation (Document Number: 88303). For high-frequency signal lines (e.g., USB 2.0, HDMI), designers should verify CJ experimentally or select explicitly characterized alternatives such as the SMAJ64CA, which lists CJ = 150 pF at 0 V.
1.5SMC68CAHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, 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):
- 16.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
1.5SMC68CAHE3_A/H FAQ
1.How can I place an order for 1.5SMC68CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68CAHE3_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 1.5SMC68CAHE3_A/H reliable?
The price and inventory of 1.5SMC68CAHE3_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 1.5SMC68CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC68CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68CAHE3_A/H?
1.5SMC68CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68CAHE3_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 1.5SMC68CAHE3_A/H?
For technical support, including 1.5SMC68CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68CAHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC68CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68CAHE3_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 1.5SMC68CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC68CAHE3_A/H?
All 1.5SMC68CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68CAHE3_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 1.5SMC68CAHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC68CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC68CAHE3_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 …
