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Vishay General Semiconductor - Diodes Division P6SMB68AHM3_B/H
- Part No.:
- P6SMB68AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68AHM3_B/H.pdf
- Description:
- 600W,68V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,615
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Product details
Overview
P6SMB68AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on power and signal lines. It features a 68 V breakdown voltage (VBR = 64.6–71.4 V at IT = 1.0 mA), 58.1 V stand-off voltage (VWM), 92.0 V maximum clamping voltage (VC) at 6.5 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB68AHM3_B/H datasheet, P6SMB68AHM3_B/H pinout, P6SMB68AHM3_B/H application, or P6SMB68AHM3_B/H equivalent, this device is selected for robust ESD and surge protection where low-profile SMB (DO-214AA) mounting, AEC-Q101 qualification, and stable clamping under repetitive transients are required.
Technical Context
The P6SMB68AHM3_B/H operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), enabling effective suppression of fast-rising transients from inductive switching or ESD events.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation up to TJ = +150 °C. The device is halogen-free, RoHS-compliant, and qualified to AEC-Q101 - confirming suitability for automotive-grade power rail and sensor line protection without derating penalties at ambient temperatures ≤125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 64.6–71.4 V at 1.0 mA test current - defines precise clamping onset threshold for overvoltage events |
| Stand-off Voltage VWM | 58.1 V - maximum continuous reverse operating voltage before leakage rises significantly |
| Clamping Voltage VC | 92.0 V at 6.5 A IPPM - actual voltage seen by protected circuit during 10/1000 μs transient |
| Peak Pulse Power PPPM | 600 W - energy-handling capability for standardized lightning/surge immunity per IEC 61000-4-5 |
| Package | SMB (DO-214AA) - surface-mount footprint with 0.220" × 0.130" body, optimized for automated placement and thermal pad layout |
| AEC-Q101 Qualified | Yes - validated for automotive applications including engine control units and ADAS sensor interfaces |
| Max Junction Temperature | +150 °C - enables reliable operation in under-hood or industrial high-temperature environments |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional polarity with cathode band marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Mounting requires 5.0 mm × 5.0 mm copper pads per terminal per JEDEC standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / low-impedance return during clamping | Connected to ground or lower-potential rail; carries full surge current during transient |
| Cathode | Reverse-biased input / transient sensing node | Connected to protected line (e.g., 12 V supply or CAN bus); initiates avalanche conduction above VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports Level 4 IEC 61000-4-5 surge immunity testing without external derating |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| AEC-Q101 qualification (HM3 suffix) | Validated for automotive use including temperature cycling, mechanical shock, and board-level reliability |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for downstream ICs |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-related popcorn failure |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator surge transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients before they reach LDOs or microcontrollers. Use Value: Clamps to 92.0 V at 6.5 A, limiting stress on 36 V-rated input stages while surviving repeated 600 W pulses per ISO 7637-2. |
Use Scenario: Safeguarding analog outputs of pressure or temperature sensors exposed to cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS on sensor output line to suppress ESD without distorting mV-level signals. Use Value: Sub-1 nA leakage at 58.1 V ensures no DC error injection; fast response preserves signal integrity during 8 kV contact ESD. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Input Stage |
Use Scenario: Secondary-side transient suppression on 48 V PoE-powered line cards subjected to induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS across DC bus to absorb coupled lightning energy before reaching Ethernet PHYs. Use Value: 600 W rating handles multi-pulse surges per GR-1089-CORE; SMB package allows dense layout near connectors. |
Use Scenario: Input-stage clamping in AC-DC adapters to prevent overvoltage damage during MOV failure or rectifier ringing. IC Role / Device Role / Timing Role: Primary-side TVS across bulk capacitor to limit transient spikes during hot-plug or brownout recovery. Use Value: 92.0 V clamping prevents >100 V stress on 100 V-rated electrolytics; AEC-Q101 grade ensures field longevity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68A-E3/5B | Same VBR range (64.6–71.4 V), but 400 W PPPM rating and SMA package (smaller thermal mass) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost or board space is critical and surge requirements are ≤400 W |
| 1.5SMC68AHE3/A | Higher 1500 W PPPM rating, DO-214AB (SMC) package, same VBR, but larger footprint and higher VC (113 V) | Better for high-energy lightning strikes; less suitable for tight-layout automotive modules | Select when system-level surge tests exceed IEC 61000-4-5 Level 4 and PCB area permits SMC |
Compared with SMAJ68A-E3/5B, P6SMB68AHM3_B/H delivers 50 % higher surge energy handling and automotive qualification; versus 1.5SMC68AHE3/A, it offers 40 % smaller footprint and 21 V lower clamping voltage - critical for protecting 75 V-rated components in space-constrained modules.
Availability
P6SMB68AHM3_B/H is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom line card development requiring stable component supply with guaranteed AEC-Q101 compliance and traceable sourcing.
Supply support for P6SMB68AHM3_B/H 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 and automotive-grade validation.
The P6SMB series was developed for high-reliability transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where consistent clamping performance and long-term stability are mandatory.
FAQ
What is the clamping voltage of P6SMB68AHM3_B/H at its rated peak pulse current?
The P6SMB68AHM3_B/H has a maximum clamping voltage (VC) of 92.0 V at 6.5 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuits during surge events - critical for ensuring compatibility with downstream 100 V-rated components. The P6SMB68AHM3_B/H maintains this clamping performance across its full operating temperature range.
Is P6SMB68AHM3_B/H suitable for automotive applications?
Yes, P6SMB68AHM3_B/H is AEC-Q101 qualified, as confirmed by the "HM3" and "_B/H" suffixes indicating halogen-free, RoHS-compliant construction and automotive-grade reliability testing. It supports operation from −65 °C to +150 °C and passes temperature cycling, mechanical shock, and board-level vibration tests required for engine control, body electronics, and ADAS subsystems. The P6SMB68AHM3_B/H is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
How does the SMB package of P6SMB68AHM3_B/H compare to SMA or SMC in thermal performance?
The SMB (DO-214AA) package of P6SMB68AHM3_B/H provides RθJA = 100 °C/W and RθJL = 20 °C/W - superior to SMA (RθJA ≈ 125 °C/W) but lower heat dissipation than SMC (RθJA ≈ 65 °C/W). This makes P6SMB68AHM3_B/H ideal for medium-power surge protection where board space is constrained but thermal demands exceed SMA capability. Its 5.0 mm × 5.0 mm pad layout ensures stable thermal transfer without requiring oversized copper areas.
What is the reverse leakage current specification for P6SMB68AHM3_B/H at its stand-off voltage?
P6SMB68AHM3_B/H specifies a maximum reverse leakage current (ID) of 1.0 μA at its stand-off voltage (VWM = 58.1 V) and TA = 25 °C. This ultra-low leakage ensures minimal power loss in always-on systems and prevents false triggering in high-impedance sensor bias networks. The P6SMB68AHM3_B/H maintains leakage <5.0 μA up to 125 °C, supporting reliable operation in under-hood automotive environments.
Can P6SMB68AHM3_B/H be used in bidirectional configurations?
No, P6SMB68AHM3_B/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. Bidirectional variants in the same series use the "CA" suffix (e.g., P6SMB68CA). Using P6SMB68AHM3_B/H in bidirectional applications would result in forward conduction during negative transients, causing failure. For AC-coupled or differential signal protection, select the verified bidirectional counterpart - P6SMB68AHM3_B/H is strictly for DC rail or single-polarity line protection.
P6SMB68AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58.1V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 92V
- Current - Peak Pulse (10/1000µs):
- 6.5A
- 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)
P6SMB68AHM3_B/H FAQ
1.How can I place an order for P6SMB68AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68AHM3_B/H 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 P6SMB68AHM3_B/H reliable?
The price and inventory of P6SMB68AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68AHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB68AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68AHM3_B/H?
P6SMB68AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68AHM3_B/H 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 P6SMB68AHM3_B/H?
For technical support, including P6SMB68AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68AHM3_B/H requirements.
6.How does Aetrix verify that P6SMB68AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB68AHM3_B/H 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 P6SMB68AHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB68AHM3_B/H?
All P6SMB68AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68AHM3_B/H, 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 P6SMB68AHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB68AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68AHM3_B/H Tags
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