My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB6.8AHM3/I
- Part No.:
- P6SMB6.8AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8AHM3/I.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,297
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB6.8AHM3/I from Vishay General Semiconductor is a unidirectional 600 W surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 6.45 V to 7.14 V breakdown voltage at 10 mA, 5.80 V stand-off voltage, and 10.5 V clamping voltage at 57.1 A peak pulse current. It protects low-voltage logic circuits, USB interfaces, and automotive sensor signal lines against ESD and inductive switching transients.
For engineers reviewing the P6SMB6.8AHM3/I datasheet, P6SMB6.8AHM3/I pinout, P6SMB6.8AHM3/I application, or P6SMB6.8AHM3/I equivalent, this device delivers verified AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, MSL Level 1 moisture sensitivity, and 150 °C maximum junction temperature for automotive-grade reliability in compact PCB layouts.
Technical Context
The P6SMB6.8AHM3/I operates as a unidirectional avalanche diode, clamping transient overvoltages above its breakdown threshold while maintaining low leakage (<1000 µA at 5.80 V). Its glass-passivated junction ensures stable VBR tolerance (±5%) and fast response time (<1.0 ns), critical for protecting 3.3 V and 5 V digital I/O rails.
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, it achieves 600 W peak pulse power (10/1000 µs waveform) with 0.01% duty cycle, and exhibits 0.057 %/°C temperature coefficient of VBR - enabling predictable clamping behavior across -65 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 6.45–7.14 V at 10 mA - defines precise overvoltage triggering point for 5 V systems |
| Stand-off Voltage VWM | 5.80 V - ensures no conduction during normal 5 V rail operation |
| Clamping Voltage VC | 10.5 V at 57.1 A - limits transient voltage seen by protected IC to safe level |
| Peak Pulse Power PPPM | 600 W (10/1000 µs) - sustains high-energy surges without failure |
| Maximum Leakage ID | 1000 µA at VWM - negligible standby current impact on low-power sensor nodes |
| Junction Temperature Range | -65 °C to +150 °C - supports under-hood automotive and industrial ambient conditions |
| AEC-Q101 Qualified | Yes (HM3 suffix) - validated for automotive electronics per stress test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection terminal | Connected to ground or return path; completes clamping circuit during transient |
| Cathode | High-side connection terminal | Connected to protected line (e.g., USB D+, CAN_H); conducts avalanche current when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Withstands repeated lightning-induced surges in industrial control I/O modules |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly without pre-baking |
| Halogen-free & RoHS-compliant (HM3) | Fulfills automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1) |
| 0.057 %/°C VBR tempco | Minimizes clamping voltage drift over temperature - critical for precision 5 V rail protection |
| Glass-passivated junction | Ensures long-term stability of breakdown characteristics and low parameter shift after thermal cycling |
Applications
| Automotive Sensor Interface | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control units exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and ground, clamping transients before they reach ADC input or microcontroller GPIO. Use Value: Maintains signal integrity below 10.5 V during 57.1 A surge, preventing latch-up or damage to 5 V tolerant interface circuitry. |
Use Scenario: Safeguarding USB D+ and D- lines in infotainment head units against ESD events per IEC 61000-4-2 ±15 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <50 pF at 0 V) placed inline with data lines, preserving signal rise/fall times. Use Value: Clamps ESD spikes within <1 ns while adding <0.5 pF parasitic capacitance - no USB 2.0 eye diagram degradation. |
| Industrial PLC Digital Input | DC Power Rail Surge Suppression |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from inductive kickback caused by relay or solenoid switching. IC Role / Device Role / Timing Role: Mounted at connector entry point, shunting surge energy to chassis ground before reaching optocoupler input stage. Use Value: Absorbs 600 W transient energy without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 Level 3 compliance. |
Use Scenario: Secondary-level protection on 5 V or 3.3 V DC-DC output rails feeding FPGA or MCU cores in telecom base station boards. IC Role / Device Role / Timing Role: Parallel-connected TVS referenced to local ground, activated only during overvoltage faults exceeding VWM. Use Value: Limits rail excursion to ≤10.5 V during 10/1000 µs surges, preventing brownout reset or core voltage violation in sensitive logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A-Q | Same SMB package, 6.45–7.14 V VBR, but rated for 400 W PPPM (vs. 600 W); no AEC-Q101 qualification | Limited to commercial-grade industrial use; not approved for automotive ECUs | Select when cost sensitivity outweighs automotive qualification and 200 W margin reduction is acceptable |
| 1.5SMC6.8A | Higher 1.5 kW rating in larger SMC (DO-214AB) package; same VBR range; AEC-Q101 available only in HE3/HM3 variants | Requires PCB layout change due to 2.5 mm longer body and 0.5 mm wider width | Choose when system-level surge immunity requires >600 W capability and board space permits larger footprint |
Compared with SMAJ6.8A-Q and 1.5SMC6.8A, the P6SMB6.8AHM3/I uniquely balances 600 W surge handling, AEC-Q101 qualification, SMB footprint, and halogen-free compliance - making it optimal for space-constrained automotive and industrial designs where qualification and reliability are non-negotiable.
Availability
P6SMB6.8AHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB 2.0 port protection, and industrial PLC digital inputs requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB6.8AHM3/I 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications equipment - engineered for robustness under repetitive surge stress and harsh environmental conditions.
FAQ
What is the clamping voltage of the P6SMB6.8AHM3/I at its rated peak pulse current?
The P6SMB6.8AHM3/I has a maximum clamping voltage (VC) of 10.5 V at 57.1 A peak pulse current (IPPM), measured using the standardized 10/1000 µs waveform. This value ensures protected downstream ICs - such as 5 V microcontrollers or USB transceivers - remain within absolute maximum ratings during surge events. The clamping performance is guaranteed across the full operating temperature range and is validated per JEDEC standards.
Is the P6SMB6.8AHM3/I qualified for automotive applications?
Yes, the P6SMB6.8AHM3/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix and Vishay's official documentation. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, making the P6SMB6.8AHM3/I suitable for automotive subsystems like body control modules, ADAS sensor interfaces, and infotainment power rails. Full qualification reports are available upon request from Vishay or Aetrix Electronics.
What does the "HM3" suffix indicate in P6SMB6.8AHM3/I?
The "HM3" suffix in P6SMB6.8AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. Specifically, "H" indicates halogen-free molding compound, "M3" confirms RoHS compliance and JESD201 Class 2 whisker resistance, and the "_I" denotes 3200-unit tape-and-reel packaging on 13-inch reels. This suffix directly maps to Vishay's ordering nomenclature in Document Number 88370, Revision 09-Jan-2024.
Can the P6SMB6.8AHM3/I be used in bidirectional configurations?
No, the P6SMB6.8AHM3/I is strictly unidirectional, as indicated by the "A" (not "CA") in its part number and confirmed by its cathode-band marking. Bidirectional operation requires the "CA" variant (e.g., P6SMB6.8CA), which lacks polarity marking and supports symmetrical clamping in both directions. Using P6SMB6.8AHM3/I in bidirectional circuits would result in forward conduction during negative transients and potential failure.
What is the thermal resistance of the P6SMB6.8AHM3/I, and how does it affect power derating?
The P6SMB6.8AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. This value governs power derating above 25 °C ambient: for example, at 85 °C ambient, its 5.0 W steady-state power dissipation drops to ~2.9 W. Derating curves are provided in Figure 2 of Vishay Document 88370, and proper pad layout is essential to maintain specified thermal performance.
P6SMB6.8AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 57.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB6.8AHM3/I FAQ
1.How can I place an order for P6SMB6.8AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8AHM3/I 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 P6SMB6.8AHM3/I reliable?
The price and inventory of P6SMB6.8AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8AHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB6.8AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8AHM3/I?
P6SMB6.8AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8AHM3/I 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 P6SMB6.8AHM3/I?
For technical support, including P6SMB6.8AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8AHM3/I requirements.
6.How does Aetrix verify that P6SMB6.8AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8AHM3/I 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 P6SMB6.8AHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB6.8AHM3/I?
All P6SMB6.8AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8AHM3/I, 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 P6SMB6.8AHM3/I part is unused and in its original packaging.
Return procedure for P6SMB6.8AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8AHM3/I 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 …
