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Vishay General Semiconductor - Diodes Division P6SMB68CAHM3_B/H
- Part No.:
- P6SMB68CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB68CAHM3_B/H.pdf
- Description:
- 600W,68V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,684
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Product details
Overview
P6SMB68CAHM3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 68 V breakdown voltage (VBR min/max = 64.6–71.4 V), 600 W peak pulse power (10/1000 µs), and clamps to ≤92.0 V at 6.5 A peak pulse current - used in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the P6SMB68CAHM3_B/H datasheet, P6SMB68CAHM3_B/H pinout, P6SMB68CAHM3_B/H application, or P6SMB68CAHM3_B/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and compliance with IEC 61000-4-2/4-4/4-5 transient immunity requirements.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM = 58.1 V) and fast response time (<1 ns) to ESD and lightning-induced surges.
The device is rated for 150 °C maximum junction temperature and exhibits low incremental surge resistance, supporting repetitive 0.01% duty-cycle transients. Thermal resistance is RθJA = 100 °C/W (typ.) on standard 0.2" × 0.2" copper pads, aligning with JEDEC MS-012 (SMB) mounting guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 64.6 V / 71.4 V - guaranteed breakdown range at 1 mA test current; defines minimum clamping threshold under surge conditions |
| VWM | 58.1 V - maximum continuous reverse stand-off voltage; sets safe operating limit before conduction begins |
| VC @ IPPM | 92.0 V at 6.5 A - clamped voltage during 600 W 10/1000 µs transient; determines protected circuit's worst-case overvoltage exposure |
| PPPM | 600 W - peak pulse power handling per 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 (4 kV) surge testing |
| IPPM | 6.5 A - peak pulse current corresponding to 600 W clamping; used to size PCB trace width and verify layout survivability |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 0.220" × 0.130" footprint; compatible with automated pick-and-place and reflow |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node for bidirectional conduction path | No polarity marking required; symmetrical terminals allow placement without orientation check during assembly |
| Cathode | Current exit terminal in forward bias; electrically identical to Anode in bidirectional configuration | Terminal symmetry eliminates need for silkscreen polarity indicators; reduces BOM and layout complexity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness - suitable for engine control, ADAS, and body electronics |
| 600 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 surge events up to 4 kV (line-to-earth) without degradation when mounted per recommended pad layout |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage stress on downstream ICs such as CAN transceivers or ADC front-ends during transient events |
| Halogen-free & RoHS-compliant (HM3 suffix) | Meets EU Directive 2011/65/EU and JESD201 Class 2 whisker resistance - supports green manufacturing and long-term supply continuity |
| Fast response time (<1 ns) | Clamps ESD pulses (IEC 61000-4-2 ±8 kV contact) before sensitive CMOS inputs reach destructive voltage levels |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle chassis modules. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and ground, absorbing energy while holding line voltage below IC absolute maximum ratings. Use Value: Enables reliable operation at 12 V/24 V battery systems with AEC-Q101 validation - eliminates field failures due to ISO 7637-2 Pulse 5a/b exposure. |
Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers against surge coupling from relay coils, motor drives, and field wiring. IC Role / Device Role / Timing Role: Standoff protector across input terminals, conducting only during transients >58.1 V and returning to high-impedance state within nanoseconds. Use Value: Maintains signal integrity during repeated 1 kV/2 kV surges per IEC 61000-4-4; avoids false triggering or latch-up in microcontroller input buffers. |
| Telecom Line Surge Suppression | Consumer Appliance Motor Control Protection |
|
Use Scenario: Shielding RS-485/RS-232 data lines in base stations and network equipment from lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Differential-mode TVS pair (two devices) across twisted-pair lines, limiting common-mode and differential-mode overvoltages simultaneously. Use Value: Achieves >4 kV IEC 61000-4-5 immunity without adding series impedance - preserves signal rise/fall times and jitter performance. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools connected to MCU-based control boards. IC Role / Device Role / Timing Role: Snubber-style clamp across motor terminals or H-bridge outputs, diverting inductive kickback energy away from MOSFETs and gate drivers. Use Value: Prevents avalanche failure of 60 V logic-level MOSFETs by clamping spikes to ≤92 V - extends power stage lifetime and reduces thermal derating needs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68CA | Same VBR range (64.6–71.4 V), but lower PPPM = 400 W; SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients (e.g., IEC 61000-4-2 only); unsuitable for IEC 61000-4-5 Level 3+ or automotive load dump | Select when board space is constrained and surge threat level is limited to ESD and minor switching noise. |
| 1.5KE68CA | Higher PPPM = 1500 W, axial leaded DO-201 package; slower response (~5 ns), larger footprint, no AEC-Q101 qualification | Requires through-hole assembly; not viable for high-density SMT designs or automotive production; better for legacy industrial equipment | Choose for cost-sensitive, non-automotive applications needing higher single-pulse energy absorption and manual assembly tolerance. |
Compared with SMAJ68CA and 1.5KE68CA, P6SMB68CAHM3_B/H delivers optimal balance of 600 W surge capacity, AEC-Q101 qualification, SMB footprint compatibility, and nanosecond response - making it the preferred choice for modern automotive and industrial SMT designs requiring validated reliability and compact layout.
Availability
P6SMB68CAHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom interface protection requiring stable component supply, halogen-free compliance, and AEC-Q101 assurance.
Supply support for P6SMB68CAHM3_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, rectifiers, MOSFETs, and passive components with emphasis on high-reliability, automotive-qualified, and industry-standard solutions.
The P6SMB Series is engineered specifically for surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where robustness, repeatability, and standardized packaging are critical.
FAQ
What does the "HM3_B/H" suffix indicate in P6SMB68CAHM3_B/H?
The "HM3" denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance; "B" indicates AEC-Q101 qualification for automotive use; "H" specifies 7" tape-and-reel packaging (750 units/reel). This full suffix confirms P6SMB68CAHM3_B/H meets automotive reliability standards while supporting automated SMT assembly with green material compliance.
Is P6SMB68CAHM3_B/H unidirectional or bidirectional?
P6SMB68CAHM3_B/H is a bidirectional TVS diode, as confirmed by the "CA" suffix in the part number and electrical specifications showing symmetrical VBR, VWM, and clamping behavior in both polarities. It provides equal protection for positive and negative transients without requiring polarity-aware placement - ideal for AC signal lines and differential buses like CAN or RS-485.
What is the maximum clamping voltage of P6SMB68CAHM3_B/H under surge conditions?
The maximum clamping voltage (VC) of P6SMB68CAHM3_B/H is 92.0 V at 6.5 A peak pulse current (IPPM), measured with a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 600 W transient event and must be compared against the absolute maximum ratings of downstream ICs to ensure safe operation.
Can P6SMB68CAHM3_B/H replace P6SMB68A in an existing design?
No - P6SMB68CAHM3_B/H is bidirectional (CA), whereas P6SMB68A is unidirectional (A). Substituting them requires verifying circuit topology: bidirectional use demands symmetric line protection (e.g., data lines), while unidirectional types require cathode-to-rail orientation. Using P6SMB68CAHM3_B/H in place of P6SMB68A may cause unintended conduction in DC-biased paths and invalidate clamping performance.
Does P6SMB68CAHM3_B/H meet IEC 61000-4-5 surge immunity requirements?
Yes - P6SMB68CAHM3_B/H supports IEC 61000-4-5 Level 4 (4 kV line-to-earth, 2 kV line-to-line) when applied per manufacturer-recommended layout: mounted on 0.2" × 0.2" copper pads with minimal trace inductance. Its 600 W peak pulse rating and 92.0 V clamping voltage enable compliant protection for industrial and automotive equipment subjected to lightning-induced surges.
P6SMB68CAHM3_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:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB68CAHM3_B/H FAQ
1.How can I place an order for P6SMB68CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB68CAHM3_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 P6SMB68CAHM3_B/H reliable?
The price and inventory of P6SMB68CAHM3_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 P6SMB68CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for P6SMB68CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB68CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB68CAHM3_B/H?
P6SMB68CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB68CAHM3_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 P6SMB68CAHM3_B/H?
For technical support, including P6SMB68CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB68CAHM3_B/H requirements.
6.How does Aetrix verify that P6SMB68CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All P6SMB68CAHM3_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 P6SMB68CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of P6SMB68CAHM3_B/H?
All P6SMB68CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB68CAHM3_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 P6SMB68CAHM3_B/H part is unused and in its original packaging.
Return procedure for P6SMB68CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB68CAHM3_B/H Tags
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