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Taiwan Semiconductor Corporation 1.5SMC68CAH
- Part No.:
- 1.5SMC68CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC68CAH.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,349
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Product details
Overview
1.5SMC68CAH from Taiwan Semiconductor is a bidirectional surface-mount transient voltage suppressor (TVS) diode designed for high-energy surge protection in automotive and industrial power rails. It delivers 1500W peak pulse power, 64.6V–71.4V breakdown voltage (VBR), 58.1V working stand-off voltage (VWM), and clamps to ≤92.0V at 17A peak impulse current - protecting CAN, LIN, and 12V/24V control circuits against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5SMC68CAH datasheet, 1.5SMC68CAH pinout, 1.5SMC68CAH application, or 1.5SMC68CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-214AB package compatibility with automated SMT lines, and verified compliance with automotive ESD and load-dump immunity standards.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal bias (≤58.1V), it draws <1µA leakage; during transients exceeding VBR, it avalanches symmetrically in both directions to limit voltage across protected circuitry. Its glass-passivated junction ensures stable breakdown and low capacitance (<100pF at 0V), critical for high-speed signal integrity in automotive body electronics.
The device meets JESD201 Class 2 whisker resistance, UL 94V-0 molding compound rating, and moisture sensitivity level 1 (per J-STD-020), enabling robust reflow processing without popcorn cracking or solder joint degradation in production environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6V / 71.4V - defines precise avalanche onset range for reliable overvoltage triggering |
| VWM | 58.1V - maximum continuous operating voltage before leakage exceeds 1µA |
| VC@IPPM | ≤92.0V @ 17A - clamping voltage limiting stress on downstream ICs during 10/1000µs surge |
| PPK | 1500W - peak pulse power handling per single 1ms transient per Fig.5 waveform |
| IPPM | 17A - maximum non-repetitive surge current supported at rated clamping voltage |
| TJ max | +150°C - enables operation in under-hood automotive environments without thermal derating |
| Package | DO-214AB (SMC) - industry-standard 2-pin surface-mount outline with 7.11mm x 6.22mm footprint |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, cathode band marking polarity for unidirectional variants; 1.5SMC68CAH is bidirectional and marked with "FPJ" code - no polarity band required. Weight: 0.210g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Both terminals function identically - connects across protected line and ground (or between differential lines) without orientation constraint |
| Case | Non-electrical mechanical interface | Thermally conductive but electrically isolated housing; no internal connection to die - supports standard SMC land pattern per JEDEC MS-013 |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (line impedance transients) |
| Fast response time | <1.0ps junction response enables clamping before sensitive ICs experience overvoltage damage |
| Low leakage | <1µA @ 58.1V ensures minimal standby power loss in always-on vehicle modules |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU Directive 2011/65/EU for green manufacturing and end-of-life recycling |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting 12V supply inputs and LIN bus lines in door module ECUs exposed to battery load dump and ESD events. IC Role / Device Role / Timing Role: Bidirectional shunt TVS placed between power rail and chassis ground to clamp transients before they reach MCU power pins or LIN transceiver. Use Value: Limits voltage to ≤92.0V during 1500W surges, preventing latch-up or permanent damage to 5V/3.3V logic supplies downstream. |
Use Scenario: Safeguarding 24V digital input channels on programmable logic controllers interfacing with field sensors and actuators. IC Role / Device Role / Timing Role: Parallel-connected TVS on each input channel to absorb inductive kickback from solenoid valves and relay coils. Use Value: Withstands repeated 17A surges while maintaining <1µA leakage at 24V nominal, preserving signal integrity and reducing false-trigger risk. |
| Automotive Infotainment Power Rail | Telecom PoE Interface Protection |
Use Scenario: Securing USB-C and display power lines in head unit systems subjected to hot-swap and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional TVS on VBUS and CC lines to suppress ESD ±15kV contact discharge per IEC 61000-4-2. Use Value: Sub-1ps response ensures clamping occurs within first nanosecond of ESD event, protecting USB PD controllers before damage threshold is exceeded. |
Use Scenario: Front-end surge suppression on IEEE 802.3af/at Power over Ethernet data pairs carrying up to 57V DC. IC Role / Device Role / Timing Role: Differential-mode TVS pair across spare pairs or common-mode across all four pairs to handle lightning-induced surges. Use Value: 58.1V VWM allows safe operation above PoE voltage range while clamping 10/1000µs surges to ≤92.0V - compatible with 100BASE-TX/T1 signaling margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64CA | 64V VWM, 1000W PPK, DO-214AA (SMB) package - lower power rating and smaller thermal mass | Limited to lower-energy transients; not qualified to AEC-Q101 | Select when space-constrained layouts require SMB footprint and surge energy remains ≤1000W |
| 1.5KE68CA | 68V VWM, 1500W PPK, DO-201AD (axial leaded) package - through-hole mounting only | Not suitable for automated SMT assembly; higher thermal resistance (RθJA = 10°C/W vs. 50°C/W) | Choose for prototyping or legacy through-hole designs where reflow compatibility is not required |
Compared with SMBJ64CA and 1.5KE68CA, the 1.5SMC68CAH provides AEC-Q101 qualification, DO-214AB SMT compatibility, and identical 1500W surge rating - making it the preferred choice for volume automotive production requiring zero PCB rework and full ISO 7637-2 coverage.
Availability
1.5SMC68CAH is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, infotainment power management, and PoE interface protection requiring stable component supply across multi-year production cycles.
Supply support for 1.5SMC68CAH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in high-reliability protection devices, rectifiers, and MOSFETs for automotive and industrial markets.
The 1.5SMC series was engineered specifically for AEC-Q101-compliant automotive surge protection - emphasizing robustness under temperature cycling, low leakage at elevated VWM, and precise bidirectional clamping performance across extended ambient ranges.
FAQ
What is the breakdown voltage range for 1.5SMC68CAH?
The 1.5SMC68CAH has a guaranteed breakdown voltage (VBR) range of 64.6V to 71.4V at 1mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in 12V/24V automotive systems where overvoltage thresholds must be precisely controlled.
Is 1.5SMC68CAH suitable for bidirectional signal line protection?
Yes, the 1.5SMC68CAH is explicitly designed for bidirectional operation - its symmetrical avalanche characteristics allow placement across differential buses (e.g., LIN, RS-485) or AC-coupled lines without polarity concerns. The "CAH" suffix denotes bidirectional configuration, and electrical specifications apply identically in both directions per datasheet Note 2.
Does 1.5SMC68CAH meet automotive qualification standards?
Yes, 1.5SMC68CAH is AEC-Q101 qualified and validated for automotive use, including temperature cycling, high-temperature reverse bias (HTRB), and ESD testing. It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b requirements - confirming suitability for engine control units, body modules, and infotainment systems in passenger vehicles and commercial trucks.
What is the maximum clamping voltage of 1.5SMC68CAH at rated surge current?
The 1.5SMC68CAH clamps to a maximum of 92.0V at 17A peak impulse current (IPPM) under the standardized 10/1000µs double-exponential waveform. This value is measured per Fig.5 in the datasheet and represents the worst-case voltage seen by protected circuitry during a full 1500W transient event.
How does the DO-214AB package of 1.5SMC68CAH support automated manufacturing?
The DO-214AB (SMC) package of 1.5SMC68CAH features matte tin-plated leads compliant with J-STD-002 solderability standards and moisture sensitivity level 1 (per J-STD-020), enabling direct placement into high-volume reflow lines without baking or special handling. Its 7.11mm × 6.22mm footprint aligns with IPC-7351B recommendations for optimal tombstoning resistance and thermal relief.
1.5SMC68CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC
- 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):
- 17A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC68CAH FAQ
1.How can I place an order for 1.5SMC68CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC68CAH 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 1.5SMC68CAH reliable?
The price and inventory of 1.5SMC68CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC68CAH is usually 5 days.
3.What payment methods are accepted for 1.5SMC68CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC68CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC68CAH?
1.5SMC68CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC68CAH 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 1.5SMC68CAH?
For technical support, including 1.5SMC68CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC68CAH requirements.
6.How does Aetrix verify that 1.5SMC68CAH is sourced from the original manufacturer or authorized distributors?
All 1.5SMC68CAH 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 1.5SMC68CAH meets industry standards.
7.What is the process for return or replacement of 1.5SMC68CAH?
All 1.5SMC68CAH units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC68CAH, 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 1.5SMC68CAH part is unused and in its original packaging.
Return procedure for 1.5SMC68CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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