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Vishay General Semiconductor - Diodes Division P6SMB68AHM3/H
- Part No.:
- P6SMB68AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68AHM3/H.pdf
- Description:
- TVS DIODE 58.1VWM 92VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,304
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Product details
Overview
P6SMB68AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in 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 - deployed in automotive-grade power supply rails and industrial sensor interfaces.
For engineers reviewing the P6SMB68AHM3/H datasheet, P6SMB68AHM3/H pinout, P6SMB68AHM3/H application, or P6SMB68AHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, SMB (DO-214AA) package dimensions, thermal resistance data, and real-world protection use cases - all aligned to Vishay's 09-Jan-2024 revision of document 88370.
Technical Context
The P6SMB68AHM3/H operates as a unidirectional avalanche diode, clamping transient overvoltages above its reverse stand-off voltage (58.1 V) by entering avalanche breakdown. Its low incremental surge resistance ensures stable clamping under repetitive 10/1000 μs pulses at 0.01% duty cycle, while glass-passivated junction construction guarantees reliability across -65 °C to +150 °C operating temperature range.
Designed for automated SMT assembly, it meets J-STD-020 MSL Level 1 (peak reflow ≤ 260 °C), features matte tin-plated leads compliant with JESD 22-B102, and carries halogen-free, RoHS-compliant, AEC-Q101-qualified HM3 suffix - confirming suitability for automotive power electronics where long-term surge immunity and process compatibility are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V at 1.0 mA test current - defines precise avalanche onset threshold for predictable clamping initiation |
| VWM | 58.1 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 92.0 V at 6.5 A peak pulse current - actual worst-case voltage seen by protected circuit during 10/1000 μs transients |
| PPPM | 600 W - peak surge power handling capability with standardized 10/1000 μs waveform |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads, guiding PCB thermal layout |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronic systems per stress test requirements including HTRB, HTGB, and TCT |
Pinout & Package
Package: SMB (DO-214AA) - surface-mount, low-profile plastic case with cathode band marking; dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); UL 94 V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to system ground or lower-potential rail; conducts during forward surge events (e.g., reverse polarity faults) |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V supply rail); enters avalanche when voltage exceeds VWM, shunting surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables reliable suppression of ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems without derating |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics requiring zero-failure-rate surge protection over full vehicle lifetime |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 μA at VWM) after thermal cycling and humidity exposure |
| MSL Level 1 moisture sensitivity | Allows direct placement into reflow ovens without baking, reducing manufacturing cost and handling risk |
| Halogen-free & RoHS-compliant | Meets EU ELV Directive and OEM environmental requirements for sustainable vehicle production |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges >58.1 V. Use Value: Limits voltage seen by downstream DC/DC converters and microcontrollers to ≤92.0 V during 600 W transients, preventing latch-up or gate oxide damage. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS mounted at connector interface to absorb ESD (IEC 61000-4-2) and inductive switching spikes from solenoid drivers. Use Value: Sub-1 ns response time and <1.0 μA leakage at 58.1 V preserve signal integrity and offset accuracy in 24-bit ADC front-ends. |
| Telecom DC Power Input Stage | Consumer Appliance Motor Drive Supply |
Use Scenario: Secondary-side overvoltage protection on 48 V PoE-powered network switches and base stations. IC Role / Device Role / Timing Role: Standoff-rated TVS on DC input before primary DC/DC stage to absorb lightning-induced surges (IEC 61000-4-5). Use Value: 92.0 V clamping voltage ensures downstream SiC MOSFET gate drivers remain within safe operating area during 10/1000 μs line surges. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Unidirectional TVS across motor terminals referenced to main 24 V supply rail. Use Value: 6.5 A peak pulse current rating handles repetitive 100 A inductive turn-off spikes without degradation over 100,000 cycles. |
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-E3/52 (Vishay) | Same VBR/VC specs but 400 W PPPM; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a in automotive | Select only if space-constrained and surge energy is ≤400 W; verify thermal margin with smaller pad layout |
| 1.5SMC68A (ON Semiconductor) | Identical 68 V VBR, 92 V VC, 600 W rating; SMC (DO-214AB) package - 0.25 mm taller, 0.3 mm wider than SMB | Requires PCB footprint revision; same AEC-Q101 qualification not confirmed for all lots | Use when existing SMC land pattern exists; confirm HM3-equivalent automotive qualification status per batch |
Compared with SMAJ68A-E3/52 and 1.5SMC68A, the P6SMB68AHM3/H uniquely combines 600 W surge capability, AEC-Q101 qualification, SMB footprint efficiency, and halogen-free compliance - making it the preferred choice for new automotive and industrial designs requiring validated reliability and compact layout.
Availability
P6SMB68AHM3/H is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, telecom power supplies, and consumer appliance motor drives requiring stable component supply with guaranteed AEC-Q101 compliance and halogen-free materials.
Supply support for P6SMB68AHM3/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, rectifiers, MOSFETs, and passive components with emphasis on high-reliability, automotive-qualified, and industry-standard solutions.
The P6SMB Series targets high-energy transient suppression in harsh environments, with design focus on automotive power distribution, industrial automation, and telecom infrastructure where consistent clamping performance and long-term stability are mandatory.
FAQ
What is the clamping voltage of P6SMB68AHM3/H at its rated peak pulse current?
The P6SMB68AHM3/H has a maximum clamping voltage (VC) of 92.0 V at 6.5 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and represents the highest voltage the protected circuit will experience during a full-rated surge event. The P6SMB68AHM3/H maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C), ensuring consistent protection in under-hood automotive applications.
Is P6SMB68AHM3/H qualified for automotive applications?
Yes, the P6SMB68AHM3/H is AEC-Q101 qualified, as indicated by the "HM3" suffix - denoting halogen-free, RoHS-compliant, and automotive-grade qualification. It has passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT). This makes the P6SMB68AHM3/H suitable for use in engine control modules, body control units, and ADAS power supplies where failure is not acceptable.
What does the "H" in P6SMB68AHM3/H signify?
The "H" in P6SMB68AHM3/H refers to the packaging configuration: 7-inch diameter plastic tape and reel, with 750 units per reel. This is defined in Vishay's ordering information table (page 3 of document 88370). The "HM3" portion confirms halogen-free, RoHS-compliant, and AEC-Q101-qualified construction, while the trailing "/H" specifies the reel size and quantity - critical for SMT line feed planning and inventory management.
How does P6SMB68AHM3/H differ from bidirectional variants like P6SMB68CA?
The P6SMB68AHM3/H is unidirectional, with polarity marked by a cathode band and intended for DC line protection where reverse conduction must be blocked. In contrast, P6SMB68CA is bidirectional - symmetrical in both directions, used for AC signal lines or floating buses. Their VBR and VC values differ: P6SMB68CA has VBR = 64.6–71.4 V in each direction but lower VWM (58.1 V vs. 45.4 V for bidirectional), and its clamping behavior applies identically across polarity reversals - a key distinction when selecting for specific circuit topology.
What is the thermal resistance of P6SMB68AHM3/H, and how does it affect PCB layout?
The P6SMB68AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's datasheet Figure 6. To maintain safe junction temperatures during repetitive surges, designers must allocate sufficient copper area and avoid excessive trace length or isolation - especially in automotive applications where ambient temperatures exceed 85 °C. The P6SMB68AHM3/H's RθJL of 20 °C/W further supports heat transfer to PCB planes via leads.
P6SMB68AHM3/H 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/H FAQ
1.How can I place an order for P6SMB68AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68AHM3/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/H reliable?
The price and inventory of P6SMB68AHM3/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/H is usually 5 days.
3.What payment methods are accepted for P6SMB68AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68AHM3/H?
P6SMB68AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68AHM3/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/H?
For technical support, including P6SMB68AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68AHM3/H requirements.
6.How does Aetrix verify that P6SMB68AHM3/H is sourced from the original manufacturer or authorized distributors?
All P6SMB68AHM3/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/H meets industry standards.
7.What is the process for return or replacement of P6SMB68AHM3/H?
All P6SMB68AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68AHM3/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/H part is unused and in its original packaging.
Return procedure for P6SMB68AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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