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Vishay General Semiconductor - Diodes Division P6SMB75CAHM3_B/I
- Part No.:
- P6SMB75CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB75CAHM3_B/I.pdf
- Description:
- 600W,75V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,143
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Product details
Overview
P6SMB75CAHM3_B/I 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 75 V standoff voltage (VWM), 103 V maximum clamping voltage at 5.8 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform. It is halogen-free, RoHS-compliant, AEC-Q101 qualified, and used for protecting automotive sensor interfaces and industrial I/O lines.
For engineers reviewing the P6SMB75CAHM3_B/I datasheet, P6SMB75CAHM3_B/I pinout, P6SMB75CAHM3_B/I application, or P6SMB75CAHM3_B/I equivalent, key selection criteria include bidirectional clamping behavior, 75 V working voltage tolerance, 103 V clamping performance under 5.8 A surge, AEC-Q101 qualification status, and SMB (DO-214AA) package compatibility with automated SMT assembly.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping characteristics in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at 75 V), while the low incremental surge resistance enables rapid energy diversion during ESD or lightning-induced transients.
The device is rated for 150 °C maximum junction temperature and exhibits a ±0.105 %/°C temperature coefficient of breakdown voltage. Mounted on standard 0.2" × 0.2" copper pads, it achieves 100 °C/W junction-to-ambient thermal resistance - critical for sustained transient handling in compact automotive and industrial PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 75 V - Maximum continuous reverse voltage before significant conduction begins; defines operating margin for protected circuitry. |
| VBR (Breakdown Voltage) | 71.3–78.8 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 103 V at IPPM = 5.8 A - Peak voltage seen by downstream circuit during 10/1000 μs surge; determines protection level. |
| PPPM (Peak Pulse Power) | 600 W - Energy-handling capacity for standardized 10/1000 μs waveform; supports robust surge immunity per IEC 61000-4-5. |
| ID (Reverse Leakage) | ≤1.0 μA at 75 V - Minimal standby current; avoids loading sensitive analog or low-power logic inputs. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 3.94 mm footprint; compatible with J-STD-020 MSL Level 1 reflow. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; device functions identically regardless of orientation in circuit.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (reverse bias) | Accepts surge current when voltage exceeds VWM in either direction; forms one side of symmetrical clamping path. |
| Cathode | Transient current entry (forward bias) | Accepts surge current during opposite-polarity overvoltage; completes bidirectional conduction path with Anode. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 600 W peak pulse power | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive applications. |
| AEC-Q101 qualification | Validates suitability for under-hood and chassis-mounted electronics requiring extended temperature and life-cycle reliability. |
| Halogen-free & RoHS-compliant | Supports environmental compliance for global automotive OEMs and industrial equipment manufacturers. |
| Low clamping ratio (VC/VWM = 1.37) | Minimizes voltage overshoot during transients, reducing stress on downstream ICs such as CAN transceivers or ADC front-ends. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN bus nodes and temperature/pressure sensors exposed to load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across differential sensor lines or supply rails to limit voltage excursions below IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor signal conditioning ICs during 100 V/100 ms load dump events. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and 0–10 V analog inputs in programmable logic controllers against field-wiring surges and ESD. IC Role / Device Role / Timing Role: Primary overvoltage clamp at connector entry point, shunting transient energy before reaching precision op-amps or ADCs. Use Value: Maintains measurement integrity by limiting input voltage to ≤103 V during 1 kV/500 A surge tests per IEC 61000-4-5. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Shielding Ethernet PHY interfaces and PoE-powered devices from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after gas discharge tube (GDT) primary protection to refine clamping voltage and handle residual energy. Use Value: Reduces let-through voltage to <110 V, enabling use of lower-voltage-rated Ethernet magnetics and PHY ICs. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Snubber-style clamp across motor terminals or H-bridge outputs to absorb inductive kickback energy. Use Value: Extends MOSFET lifetime by limiting drain-source voltage spikes to ≤103 V during 5.8 A turn-off transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ75CA | Same VWM (75 V) and VC (103 V), but 400 W PPPM rating and SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; unsuitable for full IEC 61000-4-5 Level 4 compliance in high-current scenarios. | Select when board space is constrained and surge threat level is ≤400 W; verify thermal derating for ambient >70 °C. |
| 1.5SMC75CA | Same VWM/VC specs, 600 W rating, but larger SMC (DO-214AB) package with 150 °C/W RθJA and higher IFSM (100 A). | Better thermal margin in high-duty-cycle environments; requires larger PCB pad area and may not fit dense automotive modules. | Prefer for industrial power supplies or motor drives where layout allows extra 1.5 mm width and long-term reliability outweighs size constraints. |
Compared with SMAJ75CA and 1.5SMC75CA, P6SMB75CAHM3_B/I delivers optimal balance of AEC-Q101 qualification, 600 W surge capability, and SMB footprint - making it the preferred choice for space-constrained, automotive-grade designs requiring validated reliability and precise clamping control.
Availability
P6SMB75CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, telecom line cards, and consumer appliance motor drives requiring stable component supply with guaranteed AEC-Q101 compliance and halogen-free material content.
Supply support for P6SMB75CAHM3_B/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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series was developed specifically for high-reliability transient suppression in automotive, industrial, and telecom systems - combining AEC-Q101 qualification, 600 W surge capability, and SMB packaging for automated manufacturing scalability.
FAQ
What is the clamping voltage of P6SMB75CAHM3_B/I at its rated peak pulse current?
The P6SMB75CAHM3_B/I has a maximum clamping voltage (VC) of 103 V at its specified peak pulse current (IPPM) of 5.8 A under a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet and defines the upper voltage limit imposed on protected circuitry during surge events. The 103 V clamping ensures compatibility with 75 V-rated systems while maintaining safe margins below typical IC absolute maximum ratings.
Is P6SMB75CAHM3_B/I suitable for automotive applications?
Yes, P6SMB75CAHM3_B/I is AEC-Q101 qualified and explicitly designated for automotive use via the "HM3_B" suffix, indicating halogen-free, RoHS-compliant construction and full qualification to AEC stress tests. It is commonly deployed in engine control units, body electronics, and ADAS sensor modules where transient immunity and long-term reliability under temperature cycling and humidity are mandatory. The device meets all required failure rate and lifetime validation criteria defined in AEC-Q101 Rev D.
How does the bidirectional design of P6SMB75CAHM3_B/I affect its circuit placement?
The bidirectional design of P6SMB75CAHM3_B/I eliminates polarity sensitivity, allowing placement across any two points requiring symmetrical overvoltage protection - such as differential signal pairs, AC-coupled lines, or floating power rails. Unlike unidirectional TVS diodes, P6SMB75CAHM3_B/I requires no cathode marking or orientation check during assembly, simplifying SMT programming and reducing risk of misplacement. Its DO-214AA package has no polarity indicator, reflecting this functional symmetry.
What is the thermal resistance of P6SMB75CAHM3_B/I, and how does it impact layout?
P6SMB75CAHM3_B/I 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 mechanical drawings. To maintain safe junction temperatures during repetitive surges, designers must ensure adequate copper area and avoid excessive trace length between the device and ground/power planes. Derating curves in the datasheet show power capability drops significantly above 25 °C ambient.
Does P6SMB75CAHM3_B/I meet RoHS and halogen-free requirements?
Yes, P6SMB75CAHM3_B/I carries the "HM3" suffix, which denotes halogen-free, RoHS-compliant construction per Vishay's material categorization standards (document #99912). It contains no brominated flame retardants, chlorine, or other restricted halogens, and complies with EU RoHS Directive 2011/65/EU and China RoHS. This makes it acceptable for export to global markets with strict environmental regulations, including automotive OEM Tier 1 supply chains.
P6SMB75CAHM3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- 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)
P6SMB75CAHM3_B/I FAQ
1.How can I place an order for P6SMB75CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB75CAHM3_B/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 P6SMB75CAHM3_B/I reliable?
The price and inventory of P6SMB75CAHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB75CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB75CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB75CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB75CAHM3_B/I?
P6SMB75CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB75CAHM3_B/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 P6SMB75CAHM3_B/I?
For technical support, including P6SMB75CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB75CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB75CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB75CAHM3_B/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 P6SMB75CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB75CAHM3_B/I?
All P6SMB75CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB75CAHM3_B/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 P6SMB75CAHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB75CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB75CAHM3_B/I Tags
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