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Vishay General Semiconductor - Diodes Division P6SMB68AHM3/I
- Part No.:
- P6SMB68AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68AHM3/I.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,485
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Product details
Overview
P6SMB68AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 600 W peak pulse power (10/1000 μs), 58.1 V standoff voltage (VWM), and 92.0 V maximum clamping voltage (VC) at 6.5 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines against inductive switching transients and ESD in industrial and automotive electronics.
For engineers reviewing the P6SMB68AHM3/I datasheet, P6SMB68AHM3/I pinout, P6SMB68AHM3/I application, or P6SMB68AHM3/I equivalent, key selection criteria include clamping voltage margin relative to protected device's absolute maximum rating, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<1 μA leakage at 58.1 V), but triggers into low-impedance conduction when transient voltage exceeds its 64.6–71.4 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns).
Designed for surface-mount assembly on 0.2" × 0.2" copper pads, the device delivers 600 W surge capability with 0.01% duty cycle repetition, derated linearly above 25 °C ambient per Fig. 2. The cathode band identifies polarity, and its MSL Level 1 rating supports lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 58.1 V - Maximum continuous reverse operating voltage before significant leakage; sets upper limit for circuit operating voltage. |
| VBR (Breakdown) | 64.6–71.4 V at 1 mA - Confirmed avalanche onset range; defines minimum overvoltage threshold for clamping activation. |
| VC (Clamping) | 92.0 V at IPPM = 6.5 A - Maximum voltage seen by protected device during 10/1000 μs transient; critical for ensuring downstream IC survival. |
| PPPM | 600 W - Peak pulse power handling with 10/1000 μs waveform; determines survivability against common lightning/inductive surges. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance; dictates required PCB copper area and ambient temperature limits for sustained operation. |
| TJ max. | 150 °C - Maximum junction temperature; constrains power dissipation and layout thermal design in high-repetition scenarios. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; enables use in engine control, ADAS sensors. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow). Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or lower-potential node in unidirectional configuration; must be routed with low-inductance path for effective clamping. |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., sensor output); band-marked end; carries full surge current to ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without derating in standard PCB layouts. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving margin for 3.3 V or 5 V logic interfaces. |
| Glass passivated junction | Ensures stable, repeatable breakdown voltage and long-term reliability under repeated surge stress. |
| AEC-Q101 qualified (HM3 suffix) | Validates performance across -65 °C to +150 °C, vibration, and humidity for automotive under-hood applications. |
| MSL Level 1, 260 °C peak | Supports single-pass lead-free reflow without popcorn cracking or delamination risk. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of engine coolant temperature sensors exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between sensor output and ground, triggered only during overvoltage events. Use Value: Limits voltage to ≤92.0 V during 12 V system load dump (ISO 7637-2 Pulse 5a), preventing damage to 3.3 V ADC front-end. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers subject to inductive kickback from solenoid coils. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminals to divert >600 W transients away from optocoupler input stage. Use Value: Maintains <1 μA leakage at 24 V nominal, preserving input logic thresholds while clamping 100 V spikes within 1 ns. |
| Telecom Line Interface | Consumer Power Supply ESD Guard |
Use Scenario: Shielding RS-485 transceiver data lines in base station equipment from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS on each differential line (A/B) referenced to local ground plane. Use Value: Clamps 10/1000 μs surges to ≤92.0 V while adding <1 pF capacitance, preserving signal integrity up to 10 Mbps. |
Use Scenario: Adding secondary-level surge immunity to USB-C power delivery paths in smart home hubs. IC Role / Device Role / Timing Role: Low-leakage TVS on VBUS line upstream of buck converter, activated only during ESD or hot-plug overshoot. Use Value: Withstands 8 kV contact ESD (IEC 61000-4-2) and maintains 58.1 V standoff to avoid interfering with 20 V PD negotiation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68A-E3/5B | Same VWM/VC specs but SMA package (smaller footprint, higher RθJA = 140 °C/W); non-AEC-Q101; RoHS-compliant E3 only. | Limited to commercial-temp, space-constrained consumer designs; unsuitable for automotive or high-power industrial layouts. | Select when board area is critical and thermal budget allows higher junction rise; verify pad layout matches SMA thermal requirements. |
| 1.5SMC68AHE3/A | Same electrical specs but SMC (DO-214AB) package (larger, lower RθJA = 60 °C/W); AEC-Q101 qualified; same HM3 halogen-free compliance. | Better thermal performance for high-duty-cycle environments; requires larger PCB real estate and different stencil design. | Choose for demanding automotive or industrial applications needing enhanced thermal margin without changing circuit topology. |
Compared with P6SMB68AHM3/I, SMAJ68A-E3/5B trades thermal robustness for compactness, while 1.5SMC68AHE3/A improves heat dissipation at the cost of footprint size-both retain identical clamping behavior but differ in mechanical integration and qualification scope.
Availability
P6SMB68AHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line interface circuits, and consumer power delivery systems requiring stable component supply with AEC-Q101 validation and halogen-free compliance.
Supply support for P6SMB68AHM3/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 targets high-energy transient suppression in space-constrained, high-reliability applications-designed specifically for automotive, industrial, and telecom systems where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of P6SMB68AHM3/I at its rated peak pulse current?
The P6SMB68AHM3/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 the Vishay datasheet 88370 and defines the upper voltage limit imposed on protected circuitry during surge events. Engineers must ensure this clamping level remains below the absolute maximum rating of downstream components such as microcontrollers or transceivers when selecting the P6SMB68AHM3/I.
Is P6SMB68AHM3/I qualified for automotive applications?
Yes, P6SMB68AHM3/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix and documentation in Vishay's P6SMB series datasheet (Rev. 09-Jan-2024, Doc. #88370). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD, validating its suitability for under-hood and chassis-mounted automotive electronics. The "HM3" designation also indicates halogen-free, RoHS-compliant construction meeting automotive material requirements.
What does the "I" in P6SMB68AHM3/I signify?
The "I" in P6SMB68AHM3/I denotes the tape-and-reel packaging option: 3200 units per 13-inch diameter reel, per Vishay's ordering information table (page 3 of datasheet 88370). This contrasts with the "H" suffix, which indicates 750 units per 7-inch reel. Both "H" and "I" variants share identical electrical, thermal, and reliability specifications-the "I" suffix solely reflects bulk packaging configuration for automated SMT placement.
How does the thermal resistance of P6SMB68AHM3/I affect PCB layout?
P6SMB68AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per datasheet condition. To maintain safe junction temperatures under repetitive surges, designers must allocate adequate copper area-typically ≥250 mm² per terminal-and avoid narrow traces. Insufficient copper increases RθJA, risking thermal runaway during multiple transients; thus, layout directly impacts P6SMB68AHM3/I's sustained surge capability.
Can P6SMB68AHM3/I be used in bidirectional configurations?
No, P6SMB68AHM3/I is a unidirectional TVS diode, as indicated by the "A" suffix (not "CA") and cathode band marking. Bidirectional operation requires a part with "CA" suffix (e.g., P6SMB68CAHM3/I), which lacks polarity marking and conducts symmetrically in both directions. Using P6SMB68AHM3/I in a bidirectional signal path would result in forward conduction during negative transients, potentially damaging the device or failing to suppress.
P6SMB68AHM3/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):
- 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/I FAQ
1.How can I place an order for P6SMB68AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68AHM3/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/I reliable?
The price and inventory of P6SMB68AHM3/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/I is usually 5 days.
3.What payment methods are accepted for P6SMB68AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68AHM3/I?
P6SMB68AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68AHM3/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/I?
For technical support, including P6SMB68AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68AHM3/I requirements.
6.How does Aetrix verify that P6SMB68AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB68AHM3/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/I meets industry standards.
7.What is the process for return or replacement of P6SMB68AHM3/I?
All P6SMB68AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68AHM3/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/I part is unused and in its original packaging.
Return procedure for P6SMB68AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68AHM3/I Tags
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