My Inquiry
My Account
Taiwan Semiconductor Corporation P6SMB68CAH
- Part No.:
- P6SMB68CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CAH.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,595
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB68CAH from Taiwan Semiconductor is a bidirectional 600W surface-mount Transient Voltage Suppressor (TVS) diode with a nominal breakdown voltage of 68 V, clamping voltage of 92.0 V at 6.8 A peak pulse current, and stand-off voltage of 58.1 V. It features glass-passivated junction, AEC-Q101 qualification, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive transient immunity.
For engineers reviewing the P6SMB68CAH datasheet, P6SMB68CAH pinout, P6SMB68CAH application, or P6SMB68CAH equivalent, key selection considerations include bidirectional clamping capability, 1.0 ps response time, low leakage (<1 µA @ 58.1 V), DO-214AA (SMB) package compatibility, and compliance with automotive-grade reliability standards.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, enabling protection of differential signal lines or AC-coupled circuits without polarity constraints. Its glass-passivated junction ensures stable VBR and low leakage across temperature, while the 10/1000 µs waveform rating supports robust surge handling per IEC 61000-4-5 and ISO 7637-2.
The device exhibits a temperature coefficient of VBR of 0.104 %/°C and junction-to-ambient thermal resistance of 55 °C/W, allowing reliable operation up to +150 °C junction temperature. Clamping performance is validated at 6.8 A IPPM, delivering 92.0 V VC with minimal voltage overshoot during fast transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Min/Max) | 64.6 V / 71.4 V - Ensures consistent breakdown initiation across production units and temperature |
| VWM | 58.1 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 92.0 V @ 6.8 A - Peak clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPSM | 600 W - Non-repetitive peak pulse power handling per standard waveform |
| IR @ VWM | <1 µA - Ultra-low leakage preserves signal integrity in high-impedance circuits |
| Response Time | <1.0 ps - Sub-nanosecond turn-on enables protection against ESD and fast EFT events |
| TJ Max | +150 °C - Supports under-hood automotive and industrial ambient environments |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, low-profile case with matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance. Polarity indicated by cathode band; bidirectional configuration means no functional anode/cathode distinction in circuit use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (Bidirectional) | Surge current path terminal | Identical electrical behavior in both directions; connects across protected line and ground or between differential lines |
| Cathode Band Marking | Physical polarity indicator | Present for manufacturing traceability but functionally irrelevant for P6SMB68CAH due to symmetrical construction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and infotainment systems |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (EFT) without degradation |
| Glass-passivated junction | Enhances long-term stability of VBR and reduces parameter drift over temperature and life cycle |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement prior to reflow; compatible with standard SMT assembly |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally constrained designs |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus or 12 V power rail in automotive ECUs from load dump and alternator transients. IC Role / Device Role: Bidirectional shunt clamp placed between power rail and chassis ground. Use Value: Limits voltage to ≤92.0 V during 600 W surges, preventing damage to MCU power supplies and CAN/LIN transceivers. |
Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC modules exposed to EFT and cable discharge. IC Role / Device Role: Differential or common-mode TVS across signal pair or signal-to-ground. Use Value: Sub-1 ps response suppresses 4 kV ESD per IEC 61000-4-2 while maintaining <1 µA leakage at 58.1 V stand-off. |
| LED Driver Output Protection | AC/DC Adapter Secondary-Side Surge Suppression |
Use Scenario: Clamping inductive kickback from LED string switching in automotive lighting modules. IC Role / Device Role: Parallel-connected TVS across LED output terminals. Use Value: Absorbs 600 W pulses without latch-up, preserving driver FET integrity and meeting AEC-Q101 lifetime requirements. |
Use Scenario: Protecting secondary-side rectifier and controller ICs in offline SMPS from lightning-induced surges on DC output. IC Role / Device Role: Shunt clamp between +VOUT and GND after bulk capacitor. Use Value: Clamps to 92.0 V within 1 ps, limiting stress on optocoupler feedback and TL431 references during 10/1000 µs transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ68CA | Same DO-214AA package, identical 64.6–71.4 V VBR, but rated at 600 W with 92.0 V VC; minor VWM difference (58.0 V vs. 58.1 V) | Functionally interchangeable in all AEC-Q101-compliant designs; same ISO 7637-2 coverage | Drop-in replacement if SMBJ-series sourcing is preferred; verify tape-and-reel packaging compatibility |
| 1.5KE68CA | Higher-power through-hole variant (1500 W), larger DO-201AD package, same VBR range and bidirectional configuration | Not suitable for space-constrained SMT layouts; requires PCB redesign and wave-solder process | Select only when higher energy absorption (>600 W) is required and board real estate allows DO-201AD footprint |
Compared with SMBJ68CA, P6SMB68CAH offers identical clamping and AEC-Q101 qualification in the same SMB package, while 1.5KE68CA provides greater surge capacity at the cost of mounting method and board area-making P6SMB68CAH optimal for automotive SMT power rail protection where size and qualification are critical.
Availability
P6SMB68CAH is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface hardening, and LED driver output clamping requiring stable component supply, AEC-Q101 compliance, and DO-214AA surface-mount compatibility.
Supply support for P6SMB68CAH 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers, with global distribution and AEC-Q101-qualified product lines.
The P6SMB series was developed specifically for automotive and industrial transient suppression, emphasizing low-profile SMT packaging, fast response, and rigorous environmental qualification-including ISO 7637-2 and moisture sensitivity level 1 compliance.
FAQ
What is the maximum clamping voltage of P6SMB68CAH under standard test conditions?
The maximum clamping voltage (VC) of P6SMB68CAH is 92.0 V when subjected to a 10/1000 µs peak pulse current of 6.8 A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB68CAH maintains this clamping performance across its full operating temperature range.
Is P6SMB68CAH suitable for automotive applications requiring AEC-Q101 qualification?
Yes, P6SMB68CAH is explicitly AEC-Q101 qualified and tested for automotive use, including validation against ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transients. Its glass-passivated junction, MSL Level 1 rating, and +150 °C maximum junction temperature make it appropriate for under-hood and body-control module deployments where P6SMB68CAH is specified.
How does the bidirectional configuration of P6SMB68CAH affect its circuit placement?
The bidirectional configuration of P6SMB68CAH eliminates polarity sensitivity, allowing placement across any two nodes requiring symmetrical transient suppression-such as differential data lines (LIN, RS-485) or AC-coupled power rails. Unlike unidirectional TVS diodes, P6SMB68CAH requires no anode/cathode orientation check during layout or assembly, simplifying design and reducing misplacement risk.
What is the stand-off voltage (VWM) of P6SMB68CAH, and why is it important?
The stand-off voltage (VWM) of P6SMB68CAH is 58.1 V-the maximum continuous reverse voltage at which leakage remains below 1 µA. This parameter ensures the device remains non-conductive during normal operation while providing margin below the 64.6 V minimum breakdown voltage. Selecting a VWM ≥10–15% above system operating voltage prevents false triggering, a key design rule applied to P6SMB68CAH in 48 V and 60 V automotive subsystems.
Does P6SMB68CAH meet RoHS and halogen-free requirements?
Yes, P6SMB68CAH is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm. These attributes are verified in TSC's material declarations and support compliance for consumer, industrial, and automotive programs requiring strict environmental controls-confirming P6SMB68CAH meets modern sustainability mandates.
P6SMB68CAH 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 6.8A
- 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)
P6SMB68CAH FAQ
1.How can I place an order for P6SMB68CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CAH 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 P6SMB68CAH reliable?
The price and inventory of P6SMB68CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68CAH is usually 5 days.
3.What payment methods are accepted for P6SMB68CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CAH?
P6SMB68CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CAH 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 P6SMB68CAH?
For technical support, including P6SMB68CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CAH requirements.
6.How does Aetrix verify that P6SMB68CAH is sourced from the original manufacturer or authorized distributors?
All P6SMB68CAH 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 P6SMB68CAH meets industry standards.
7.What is the process for return or replacement of P6SMB68CAH?
All P6SMB68CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CAH, 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 P6SMB68CAH part is unused and in its original packaging.
Return procedure for P6SMB68CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68CAH 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
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…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
