My Inquiry
My Account
Taiwan Semiconductor Corporation P6SMB6.8
- Part No.:
- P6SMB6.8
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8.pdf
- Description:
- 600W, 6.8V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:5,980
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB6.8 from Taiwan Semiconductor is a unidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in DC power rails. It features a 6.8V breakdown voltage (VBR min/max: 6.12–7.48V), 5.5V stand-off voltage (VWM), clamps to ≤10.8V at 58A peak pulse current, and delivers sub-1ps response time with <1μA leakage above 10V - deployed in AC/DC adapters and SMPS input stages.
For engineers reviewing the P6SMB6.8 datasheet, P6SMB6.8 pinout, P6SMB6.8 application, or P6SMB6.8 equivalent, key selection criteria include unidirectional polarity, DO-214AA (SMB) package compatibility, 600W 10/1000μs surge rating, IEC 61000-4-5 compliance via clamping performance, and thermal derating behavior up to +150°C junction temperature.
Technical Context
The P6SMB6.8 operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified VBR range (6.12–7.48V @ 10mA). Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1000μA @ 5.5V), while fast response (<1.0ps) enables suppression of ESD and lightning-induced transients before downstream ICs are damaged.
Thermally, it supports continuous operation from –55°C to +150°C with RθJC = 10°C/W and RθJA = 55°C/W. It meets ISO 7637-2 Pulse 1/2a/2b/3a/3b for automotive load-dump immunity and complies with RoHS and halogen-free standards per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min–max) | 6.12–7.48 V @ 10 mA - defines precise avalanche initiation window for reliable overvoltage triggering |
| VWM | 5.5 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 10.8 V @ 58 A - clamping voltage during 600W 10/1000μs surge, limiting stress on protected circuitry |
| PPPSM | 600 W - peak pulse power handling per 10/1000μs waveform, enabling robust surge immunity |
| IR @ VWM | <1000 μA - low leakage ensures minimal standby power loss in always-on systems |
| TJ max | +150 °C - maximum junction temperature supports high-ambient industrial and automotive environments |
| Response time | <1.0 ps - enables suppression of ultrafast ESD events before propagation into sensitive logic |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-diode configuration with cathode band marking. Matte tin-plated leads meet J-STD-002 solderability; weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path in unidirectional TVS configurations |
| Cathode | Reverse-biased protection terminal | Connected to protected line (e.g., DC input rail); avalanche conduction occurs when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| Low-profile SMB package | Enables automated SMT placement and fits space-constrained PCB layouts in compact adapters and power supplies |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Validates suitability for automotive electronics subject to battery transients and load dump conditions |
| Moisture sensitivity level 1 | Eliminates bake requirements prior to reflow, reducing manufacturing complexity and cost |
| RoHS and halogen-free | Complies with environmental regulations including IEC 61249-2-21, supporting green product certification |
Applications
| Switching Mode Power Supply (SMPS) | AC/DC Adapters |
|---|---|
Use Scenario: Input rectifier stage of offline flyback converters exposed to line surges and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS diode clamping transient overvoltages on bulk DC bus before PWM controller and MOSFET gate drivers. Use Value: Limits peak rail voltage to ≤10.8V during 600W surges, preventing latch-up or overvoltage damage to UCC28704 or similar controllers. | Use Scenario: Secondary-side output rail of wall-mounted USB-C chargers subjected to hot-plug and cable discharge events. IC Role / Device Role / Timing Role: Fast-acting clamp on 5V/9V/15V output lines, absorbing CDM and HBM ESD pulses before USB PD controller and port protection ICs. Use Value: Sub-1ps response and <1μA leakage preserve efficiency and ensure no false triggering during normal regulation. |
| Flat Panel TV Power Board | Industrial Monitor DC Input |
Use Scenario: Standby 12V rail in LED-backlit TV mainboards experiencing brown-out recovery spikes and nearby relay switching noise. IC Role / Device Role / Timing Role: Primary overvoltage protector on always-on auxiliary supply feeding microcontroller and IR receiver. Use Value: 5.5V VWM allows clean operation below 12V nominal, while 10.8V clamping prevents MCU reset or flash corruption during transients. | Use Scenario: 24V DC input of ruggedized medical-grade monitors exposed to hospital-grade power disturbances and EMI from adjacent imaging equipment. IC Role / Device Role / Timing Role: Front-end transient suppressor placed immediately after DIN-rail power entry connector. Use Value: 600W surge rating and –55°C to +150°C operation ensure uninterrupted function in wide-temperature, high-noise environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Bidirectional variant with symmetric VBR (6.46–7.14V); same SMB package and 600W rating | Required where AC-coupled or bidirectional signal lines need protection (e.g., RS-485, CAN bus) | Select P6SMB6.8 for DC rail protection with polarity-aware layout; choose SMBJ6.8A only if bidirectional clamping is mandatory. |
| 1.5SMC6.8A | Larger DO-214AB (SMC) package; identical electrical specs but higher RθJA (40°C/W vs. 55°C/W) and 1.5kW rating | Suitable for higher-power industrial SMPS where board space permits larger footprint and thermal mass | P6SMB6.8 offers tighter PCB area usage and better fit for consumer adapter designs; 1.5SMC6.8A preferred when >600W margin or enhanced thermal mass is needed. |
Compared with SMBJ6.8A and 1.5SMC6.8A, the P6SMB6.8 provides optimal balance of compact SMB footprint, unidirectional precision, and verified 600W surge capability - making it ideal for space-constrained, cost-sensitive DC input protection where polarity is fixed and bidirectional clamping is unnecessary.
Availability
P6SMB6.8 is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, and flat-panel TV power boards requiring stable component supply, consistent parametric performance, and full traceability across production batches.
Supply support for P6SMB6.8 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, MOSFETs, and power management devices.
The P6SMB series belongs to TSC's high-reliability surface-mount TVS portfolio, engineered specifically for cost-effective, high-volume surge protection in consumer power electronics and industrial power conversion systems.
FAQ
What is the polarity configuration of the P6SMB6.8?
The P6SMB6.8 is a unidirectional TVS diode, meaning it conducts only in reverse bias when voltage exceeds its breakdown threshold. Its cathode band marks the protected line connection point, and anode connects to ground. This configuration is optimized for DC rail protection where polarity is fixed - unlike bidirectional variants such as P6SMB6.8A, which protect both polarities equally.
Does the P6SMB6.8 meet automotive transient immunity standards?
Yes, the P6SMB6.8 meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements for automotive electronic modules. Its 600W 10/1000μs surge rating, low clamping voltage (10.8V), and stable VBR tolerance enable reliable suppression of load-dump and inductive-switching transients - confirmed in TSC's Q2209 qualification report for the P6SMB6.8(A) family.
What is the maximum peak pulse current (IPPM) for the P6SMB6.8?
The P6SMB6.8 has a maximum peak pulse current (IPPM) of 58 A under the standard 10/1000μs waveform. This value is derived directly from its 600W peak pulse power rating and 10.8V clamping voltage (IPPM = PPPSM/VC). It is tested at 25°C and derates linearly above that ambient per Figure 2 in the official datasheet.
Can the P6SMB6.8 be used in place of a P6SMB6.8A?
No - the P6SMB6.8 and P6SMB6.8A are not interchangeable without circuit review. The P6SMB6.8 is unidirectional with VBR 6.12–7.48V, while the P6SMB6.8A is bidirectional with tighter VBR (6.46–7.14V) and symmetric clamping. Substituting P6SMB6.8 for P6SMB6.8A in AC-coupled or floating-line applications risks incomplete protection; always verify polarity and signal topology before replacement.
What is the junction-to-ambient thermal resistance (RθJA) of the P6SMB6.8?
The junction-to-ambient thermal resistance (RθJA) of the P6SMB6.8 is 55°C/W, measured under standard JEDEC PCB mounting conditions (single-layer 1 in² copper pad). This value governs temperature rise during sustained surge events and must be factored into thermal design - especially when multiple surges occur in rapid succession or ambient temperatures exceed 70°C.
P6SMB6.8 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):
- 5.5V
- Voltage - Breakdown (Min):
- 6.12V
- Voltage - Clamping (Max) @ Ipp:
- 10.8V
- Current - Peak Pulse (10/1000µs):
- 58A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB6.8 FAQ
1.How can I place an order for P6SMB6.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8 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 P6SMB6.8 reliable?
The price and inventory of P6SMB6.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8 is usually 5 days.
3.What payment methods are accepted for P6SMB6.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8?
P6SMB6.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8 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 P6SMB6.8?
For technical support, including P6SMB6.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8 requirements.
6.How does Aetrix verify that P6SMB6.8 is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8 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 P6SMB6.8 meets industry standards.
7.What is the process for return or replacement of P6SMB6.8?
All P6SMB6.8 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8, 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 P6SMB6.8 part is unused and in its original packaging.
Return procedure for P6SMB6.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8 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…
