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Vishay General Semiconductor - Diodes Division P6SMB68AHM3_A/I
- Part No.:
- P6SMB68AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68AHM3_A/I.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,053
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Product details
Overview
P6SMB68AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for robust overvoltage protection of DC power rails and signal lines. It features a 58.1 V stand-off voltage (VWM), 64.6–71.4 V breakdown voltage (VBR) at 1 mA, 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 - deployed in automotive-grade industrial power supplies and sensor interface circuits.
For engineers reviewing the P6SMB68AHM3_A/I datasheet, P6SMB68AHM3_A/I pinout, P6SMB68AHM3_A/I application, or P6SMB68AHM3_A/I equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant HM3 suffix, SMB (DO-214AA) package thermal performance (RθJA = 100 °C/W), and verified clamping behavior under repetitive surge conditions per IEC 61000-4-5.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds VBR, diverting transient energy to ground while limiting downstream voltage to ≤92.0 V. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), critical for low-power sensor front-ends.
The device is rated for 100 A non-repetitive forward surge (8.3 ms half-sine) and supports continuous power dissipation of 5.0 W at 50 °C on infinite heatsink. Its MSL Level 1 rating (260 °C peak reflow) and matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 58.1 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin. |
| VBR (Breakdown) | 64.6–71.4 V at 1 mA - Verified avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC (Clamping) | 92.0 V at 6.5 A (10/1000 µs) - Peak voltage seen by protected IC during worst-case surge; enables 3.3 V/5 V logic survival. |
| PPPM | 600 W - Sustains standardized lightning/surge transients (IEC 61000-4-5) without degradation at 0.01% duty cycle. |
| IPPM | 6.5 A - Peak pulse current capability under 10/1000 µs waveform; determines minimum series impedance for effective clamping. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.205" × 0.220" pad layout; compatible with automated pick-and-place. |
Pinout & Package
SMB (DO-214AA) package: molded epoxy case with matte tin-plated leads, cathode indicated by band marking; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected line's lower-potential side (e.g., GND or return path) | Enables unidirectional clamping from cathode to anode; must be routed to lowest-impedance ground plane for effective surge shunting. |
| Cathode | Current exit point in forward bias; marked with band; connected to protected line's higher-potential side (e.g., VIN, signal rail) | Defines clamping polarity; reverse voltage applied between cathode and anode triggers avalanche conduction to limit overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces; supports 15-year reliability under thermal cycling and humidity stress. |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental regulations without compromising thermal or electrical performance; suitable for export-controlled industrial systems. |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without failure when properly mounted on 5 mm × 5 mm copper pads. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD or inductive switch-off), improving protection margin for 3.3 V microcontrollers. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles; eliminates pre-baking requirements and reduces assembly cost in high-volume production. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and chassis ground to clamp surges above 58.1 V. Use Value: Limits peak voltage to 92.0 V during 6.5 A transients, preventing damage to downstream PMICs and CAN transceivers. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Clamp element on 24 V supply line feeding 4–20 mA transmitter circuitry. Use Value: Maintains signal integrity by suppressing 1 kV/500 A surges induced by nearby motor contactors without affecting 0.1% measurement accuracy. |
| Telecom DC Power Input | Consumer USB-C Power Delivery |
Use Scenario: Safeguarding PoE-powered switches and base stations against lightning-induced surges on 48 V input rails. IC Role / Device Role / Timing Role: Primary overvoltage protector upstream of DC-DC converters and Ethernet PHYs. Use Value: Absorbs 600 W pulses without degradation, enabling compliance with IEC 61000-4-5 Ed. 3 immunity requirements. |
Use Scenario: Secondary surge suppression on VBUS lines of USB-C PD sink controllers handling up to 20 V. IC Role / Device Role / Timing Role: Fast-response clamp between VBUS and GND to protect buck controller FETs and gate drivers. Use Value: Clamps to 92.0 V within <1 ns, preventing gate oxide rupture in 30 V-rated MOSFETs during hot-plug events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ64A-E3/5B | Same SMB package, 64 V VWM, 71.1–78.6 V VBR, 103 V VC at 5.8 A; commercial-grade (not AEC-Q101). | Lacks automotive qualification; suitable for industrial/commercial power supplies where AEC-Q101 is not mandated. | Select SMAJ64A-E3/5B if cost sensitivity outweighs automotive reliability requirements and clamping voltage margin allows 11 V higher VC. |
| SMCJ64A-QH | DO-214AB (SMC) package, 64 V VWM, 71.1–78.6 V VBR, 103 V VC at 12.3 A; AEC-Q101 qualified, higher PPPM (1500 W). | Larger footprint (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm); supports higher surge currents but requires PCB redesign. | Choose SMCJ64A-QH only when system-level surge testing exceeds 600 W and board space permits larger SMC package. |
Compared with SMAJ64A-E3/5B, P6SMB68AHM3_A/I offers tighter VBR tolerance and automotive qualification at identical footprint; versus SMCJ64A-QH, it trades 900 W peak power for 40% smaller area and proven compatibility with dense automotive PCB layouts.
Availability
P6SMB68AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB68AHM3_A/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, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series was developed for high-energy transient suppression in space-constrained surface-mount designs, targeting automotive, industrial, and communications equipment where AEC-Q101 compliance and consistent clamping performance are mandatory.
FAQ
What is the clamping voltage of P6SMB68AHM3_A/I at its rated peak pulse current?
The P6SMB68AHM3_A/I 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 Figure 1 in Vishay document 88370 and defines the upper voltage limit imposed on protected circuitry during surge events. The P6SMB68AHM3_A/I maintains this clamping performance across its specified operating temperature range (-65 °C to +150 °C) with minimal derating up to 125 °C.
Is P6SMB68AHM3_A/I suitable for automotive applications?
Yes, P6SMB68AHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction with automotive-grade reliability validation. It is explicitly listed in Vishay's ordering table for AEC-Q101 variants (P6SMB68AHM3_B/H and P6SMB68AHM3_B/I). The P6SMB68AHM3_A/I meets stress test requirements for temperature cycling, humidity, and mechanical shock per AEC-Q101 Rev D, making it appropriate for engine control, body electronics, and ADAS sensor modules.
What does the "_A/I" suffix mean in P6SMB68AHM3_A/I?
The "_A/I" suffix in P6SMB68AHM3_A/I denotes packaging configuration: "A" indicates the device belongs to the unidirectional variant group (as opposed to "CA" for bidirectional), and "I" specifies 13-inch diameter plastic tape and reel delivery containing 3200 units per reel. This matches Vishay's ordering information table where "I" corresponds to large-reel format for high-volume SMT assembly. The P6SMB68AHM3_A/I is not a sample or evaluation part - it is a full-production orderable variant.
How does the thermal resistance of P6SMB68AHM3_A/I affect PCB layout?
P6SMB68AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C during repetitive surges, designers must ensure adequate copper area and avoid thermal isolation. The P6SMB68AHM3_A/I datasheet specifies that reducing pad size below 5 mm × 5 mm increases RθJA nonlinearly, risking premature thermal runaway during sustained transient activity.
Can P6SMB68AHM3_A/I replace P6SMB68AHE3_A/I in a design?
P6SMB68AHM3_A/I can functionally replace P6SMB68AHE3_A/I in most applications, as both share identical electrical specs (VWM, VBR, VC, PPPM) and SMB package. The key difference is material composition: HM3 is halogen-free while HE3 is standard RoHS-compliant. The P6SMB68AHM3_A/I meets stricter environmental mandates (e.g., JEDEC JS709E) without altering electrical behavior or thermal profile, making it a drop-in upgrade where halogen-free compliance is required.
P6SMB68AHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P6SMB68AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68AHM3_A/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 P6SMB68AHM3_A/I reliable?
The price and inventory of P6SMB68AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB68AHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB68AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68AHM3_A/I?
P6SMB68AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68AHM3_A/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 P6SMB68AHM3_A/I?
For technical support, including P6SMB68AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68AHM3_A/I requirements.
6.How does Aetrix verify that P6SMB68AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB68AHM3_A/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 P6SMB68AHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB68AHM3_A/I?
All P6SMB68AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68AHM3_A/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 P6SMB68AHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB68AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68AHM3_A/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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