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Taiwan Semiconductor Corporation P6SMB68H
- Part No.:
- P6SMB68H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68H.pdf
- Description:
- 600W, 68V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:8,938
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Product details
Overview
P6SMB68H from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode with a breakdown voltage range of 61.2–74.8 V, clamping voltage of 98.0 V at 6.4 A peak pulse current, and DO-214AA (SMB) package. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients and ESD events.
For engineers reviewing the P6SMB68H datasheet, P6SMB68H pinout, P6SMB68H application, or P6SMB68H equivalent, key selection criteria include its 55.1 V standoff voltage, <1 µA leakage at VWM, 1.0 ps response time, AEC-Q101 qualification, and suitability for 12 V/24 V automotive subsystems requiring robust surge immunity.
Technical Context
The P6SMB68H operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its minimum breakdown voltage (61.2 V) under 1 mA test current. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low leakage (<1 µA at 55.1 V).
Thermally, it features RθJC = 10 °C/W and RθJA = 55 °C/W, enabling reliable operation up to 150 °C junction temperature. It meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 61.2 V / 74.8 V - defines guaranteed conduction onset window under 1 mA test current |
| VWM | 55.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 98.0 V at 6.4 A - peak clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPSM | 600 W - non-repetitive peak pulse power handling per standard 10/1000 µs waveform |
| IR @ VWM | <1 µA - ultra-low leakage preserves battery life in always-on automotive modules |
| TJ max | +150 °C - enables placement near heat sources in engine control units and body controllers |
| Response time | <1.0 ps - sub-picosecond avalanche initiation ensures protection before IC damage thresholds |
Pinout & Package
DO-214AA (SMB) surface-mount package: 2-terminal, single-die unidirectional configuration. Cathode indicated by molded band; anode and cathode terminals are co-planar, matte tin-plated, and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (non-banded end) | Current entry point in forward bias | Connected to system ground or low-side return path during transient suppression |
| Cathode (banded end) | Current exit point in reverse breakdown | Connected to protected line (e.g., 24 V rail); conducts surge current to ground when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood and chassis applications per stress test requirements |
| Glass-passivated junction | Ensures long-term VBR stability and low parameter drift over temperature and lifetime |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ESD-coupled fast transients) |
| Moisture Sensitivity Level 1 | Zero bake requirement prior to reflow; compatible with standard SMT assembly lines |
| UL 94V-0 molding compound | Self-extinguishing encapsulation meets automotive flammability safety standards |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 24 V supply line in engine control unit exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy to protect MCU power pins and CAN transceivers. Use Value: Limits voltage to ≤98.0 V during 600 W surges, preventing latch-up or gate oxide rupture in 3.3 V/5 V logic. | Use Scenario: RS-485 bus termination on factory floor PLC I/O module subject to EFT bursts. IC Role / Device Role / Timing Role: Primary front-end surge clamp on differential pair, shunting common-mode transients to ground. Use Value: Sub-1 ps response captures fast edges before transceiver input stages saturate, preserving signal integrity. |
| LED Driver Overvoltage Clamp | DC-DC Converter Input Protection |
Use Scenario: Constant-current LED driver input in commercial lighting fixture subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated protector across bulk capacitor input, absorbing repetitive 10/1000 µs pulses. Use Value: 55.1 V VWM allows full 24 V nominal operation while blocking leakage; 600 W rating handles multiple surge events. | Use Scenario: 48 V input stage of isolated flyback converter in telecom power supply. IC Role / Device Role / Timing Role: First-line defense against induced transients on primary-side rectifier output. Use Value: Clamps to 98.0 V before MOSFET drain-source breakdown, eliminating need for oversized input capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64A | 64 V VBR min, 103 V VC @ 5.8 A, same DO-214AA package | Higher clamping voltage reduces margin for 24 V systems with tight downstream voltage tolerances | Select when higher VBR tolerance is acceptable and legacy design uses SMBJ series footprint |
| 1.5SMC68A | 68 V VBR min, 105 V VC @ 5.7 A, DO-214AB (SMC) package - 2.6 mm wider | Larger SMC package requires PCB layout change; not drop-in compatible | Choose only if higher 1.5 kW peak power rating is required and board space permits larger outline |
Compared with SMBJ64A and 1.5SMC68A, the P6SMB68H offers tighter VBR tolerance (61.2–74.8 V vs. 64–71.1 V), lower clamping (98.0 V vs. ≥103 V), and direct compatibility with high-volume SMB-reflow profiles without thermal derating penalties.
Availability
P6SMB68H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and LED driver overvoltage clamping requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for P6SMB68H 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 TVS diodes, rectifiers, and power devices for automotive and industrial markets.
The P6SMB68H belongs to TSC's AEC-Q101-qualified P6SMBxH series, engineered specifically for cost-sensitive, high-volume automotive subsystems where robustness against ISO 7637-2 transients and zero-defect SMT assembly are mandatory.
FAQ
What is the breakdown voltage range of the P6SMB68H?
The P6SMB68H has a specified breakdown voltage range of 61.2 V to 74.8 V at 1 mA test current (IT). This range reflects manufacturing tolerance and ensures reliable triggering across temperature and lifetime. The value is measured after applying IT for 30 ms using a square-wave pulse, per ANSI/IEEE C62.35 standards. Designers must reference the 61.2 V minimum when verifying worst-case clamping behavior in the P6SMB68H circuit.
Is the P6SMB68H suitable for bidirectional transient protection?
No, the P6SMB68H is a unidirectional TVS diode intended for DC line protection with defined polarity. For bidirectional applications such as AC lines or differential buses, the P6SMB68AH variant (with CAH suffix) must be used instead. The P6SMB68H features a cathode band marking and conducts only in reverse breakdown; forward conduction is limited to 3.5 V at 50 A, which is not rated for sustained forward surge duty.
What is the maximum clamping voltage of the P6SMB68H under surge conditions?
The P6SMB68H clamps to a maximum of 98.0 V when subjected to its rated 6.4 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is guaranteed across temperature and represents the highest voltage seen at the protected node during surge events. It directly determines the safe operating margin for downstream components like 100 V-rated MOSFETs or 3.3 V LDO regulators referenced to the same rail.
Does the P6SMB68H meet automotive reliability standards?
Yes, the P6SMB68H is AEC-Q101 qualified and tested per the full stress-test schedule including HTGB, HTRB, TCT, and mechanical shock. It also complies with JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, enabling use in under-hood ECUs, body control modules, and ADAS power supplies without preconditioning. The P6SMB68H data sheet explicitly cites AEC-Q101 in its FEATURES section.
What packaging and reel quantity is offered for the P6SMB68H?
The P6SMB68H is supplied in DO-214AA (SMB) package on 3,000-piece tape-and-reel format, optimized for high-speed pick-and-place assembly. The reel meets EIA-481-D standards, with matte tin-plated leads compliant with J-STD-002 solderability requirements. No special handling or baking is needed due to its MSL Level 1 rating, supporting direct placement into lead-free reflow profiles.
P6SMB68H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 55.1V
- Voltage - Breakdown (Min):
- 61.2V
- Voltage - Clamping (Max) @ Ipp:
- 98V
- Current - Peak Pulse (10/1000µs):
- 6.4A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB68H FAQ
1.How can I place an order for P6SMB68H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68H 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 P6SMB68H reliable?
The price and inventory of P6SMB68H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68H is usually 5 days.
3.What payment methods are accepted for P6SMB68H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68H?
P6SMB68H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68H 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 P6SMB68H?
For technical support, including P6SMB68H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68H requirements.
6.How does Aetrix verify that P6SMB68H is sourced from the original manufacturer or authorized distributors?
All P6SMB68H 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 P6SMB68H meets industry standards.
7.What is the process for return or replacement of P6SMB68H?
All P6SMB68H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68H, 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 P6SMB68H part is unused and in its original packaging.
Return procedure for P6SMB68H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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