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Vishay General Semiconductor - Diodes Division P6SMB170A-M3/52
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- Part No.:
- P6SMB170A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170A-M3/52.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,592
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Product details
Overview
P6SMB170A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 170 V standoff voltage (VWM), 194.5 V minimum breakdown voltage (VBR), 234 V maximum clamping voltage (VC) at 2.6 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - used in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the P6SMB170A-M3/52 datasheet, P6SMB170A-M3/52 pinout, P6SMB170A-M3/52 application, or P6SMB170A-M3/52 equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, thermal derating above 25 °C, unidirectional polarity marking (cathode band), and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates as a shunt-clamping device that remains high-impedance below VWM (170 V) and rapidly transitions to low-impedance conduction above VBR (162–179 V), limiting transient voltages to ≤234 V at rated IPPM. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ps).
Thermal performance is defined by RθJA = 100 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W (junction-to-lead), enabling reliable operation up to TJ = 150 °C. The device meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 170 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for normal operating bus voltage. |
| VBR (Breakdown Voltage) | 162–179 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 234 V at IPPM = 2.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; defines safe margin over downstream component ratings. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized 10/1000 μs waveform; validates robustness against IEC 61000-4-5 surges. |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - Minimal standby power loss and negligible loading on high-impedance signal lines. |
| TJ max. | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial ambient environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" × 0.130" footprint; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated. Cathode indicated by a single band on the body; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line (e.g., +12 V rail); conducts surge current to ground when voltage exceeds VBR. |
| Anode (unbanded end) | Reference / return path | Typically tied to system ground or low-side reference; completes clamping path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Validates immunity to severe lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV line-to-ground). |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets automotive and industrial environmental compliance mandates without compromising thermal or electrical performance. |
| Low incremental surge resistance | Enables tighter clamping (VC − VBR = 55 V) and reduced let-through energy during fast-rising transients. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing logistics. |
| AEC-Q101 qualification option | Available in HE3/HM3 variants for automotive applications; P6SMB170A-M3/52 itself is commercial-grade but shares identical die and construction. |
Applications
| Automotive Sensor Protection | Industrial Power Input Stage |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load-dump and inductive switching transients in 12 V/24 V vehicle subsystems. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between signal line and chassis ground, responding within picoseconds to suppress >100 V spikes. Use Value: Prevents latch-up or permanent damage to sensitive 3.3 V/5 V interface ICs while maintaining signal integrity during normal operation due to <1.0 μA leakage. |
Use Scenario: Safeguarding AC-DC and DC-DC converter inputs against line surges, EFT bursts, and hot-swap transients in factory automation controllers and PLC power modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk input rails (e.g., 170 V nominal DC bus), coordinated with upstream fuses and MOVs. Use Value: Limits let-through voltage to ≤234 V, ensuring downstream rectifiers, capacitors, and controllers remain within absolute maximum ratings during 600 W transient events. |
| Telecom Line Interface | Consumer Power Adapter Output |
|
Use Scenario: Shielding Ethernet PHYs, PoE injectors, and DSL line drivers from induced surges on outdoor or long-cable runs in telecom infrastructure equipment. IC Role / Device Role / Timing Role: Secondary-level transient suppressor located after primary gas discharge tube (GDT), providing precise clamping where GDT response is too slow. Use Value: Delivers sub-100 ns response and tight VC tolerance to protect 100BASE-TX magnetics and PHY ICs rated for ≤250 V absolute maximum. |
Use Scenario: Adding secondary surge protection on the DC output of wall adapters and USB PD chargers to meet UL 62368-1 transient immunity requirements. IC Role / Device Role / Timing Role: Final-stage clamp on regulated 5–20 V outputs, absorbing residual transients escaping primary AC-side suppression. Use Value: Enables compact design with SMB footprint while meeting 600 W surge rating - critical for space-constrained consumer enclosures without heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ170A | Same VWM/VBR/VC specs, but SMA (DO-214AC) package - 20 % smaller footprint and 30 % lower thermal mass. | Preferred for ultra-compact PCBs with strict height constraints; requires adjusted pad layout and thermal validation. | Select SMAJ170A only if board space is constrained and thermal derating analysis confirms adequate junction temperature margin. |
| 1.5SMC170A | Same electrical specs but SMC (DO-214AB) package - 40 % larger footprint and higher thermal mass (RθJA = 60 °C/W). | Better suited for high-reliability industrial systems requiring enhanced surge endurance and manual rework compatibility. | Choose 1.5SMC170A when long-term reliability under repeated surges or field repairability outweighs size penalties. |
Compared with SMAJ170A and 1.5SMC170A, P6SMB170A-M3/52 delivers optimal balance of surge robustness, manufacturability, and thermal performance in standard SMB layouts - making it the default choice for mid-volume automotive and industrial designs where JEDEC-compliant placement and MSL Level 1 handling are required.
Availability
P6SMB170A-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial power supplies, telecom line cards, and consumer adapter outputs requiring stable component supply, halogen-free compliance, and proven surge immunity.
Supply support for P6SMB170A-M3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets cost-sensitive yet robust transient protection across automotive, industrial, and communications markets - engineered for high-energy clamping in compact surface-mount formats without sacrificing leakage or response time.
FAQ
What is the clamping voltage of P6SMB170A-M3/52 at its rated peak pulse current?
The P6SMB170A-M3/52 has a maximum clamping voltage (VC) of 234 V when subjected to its rated peak pulse current (IPPM) of 2.6 A 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 circuits during surge events. The P6SMB170A-M3/52 maintains this clamping performance across its qualified operating temperature range.
Is P6SMB170A-M3/52 suitable for automotive applications?
P6SMB170A-M3/52 is a commercial-grade part with halogen-free RoHS compliance (M3 suffix) and shares identical die and construction with AEC-Q101-qualified variants like P6SMB170AHM3_B. While P6SMB170A-M3/52 itself is not AEC-Q101 certified, its electrical specs, thermal ratings (TJ max = 150 °C), and mechanical robustness make it widely deployed in non-safety-critical automotive subsystems such as body control modules and infotainment power rails - subject to customer qualification.
How does the M3 suffix affect P6SMB170A-M3/52's compliance and performance?
The M3 suffix on P6SMB170A-M3/52 indicates halogen-free, RoHS-compliant construction with matte tin-plated leads meeting J-STD-002 and JESD22-B102 solderability standards. It also satisfies JESD201 Class 2 whisker resistance. Electrically and thermally, P6SMB170A-M3/52 performs identically to E3-suffix versions - the M3 designation reflects material composition only, not functional differentiation.
What is the reverse leakage current specification for P6SMB170A-M3/52 at its standoff voltage?
P6SMB170A-M3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA when biased at its rated standoff voltage (VWM) of 170 V and tested at TA = 25 °C. This low leakage ensures minimal power loss and avoids unintended loading on high-impedance nodes such as sensor bias lines or communication bus terminations - a key requirement verified in Vishay's Electrical Characteristics table on page 2 of document 88370.
Can P6SMB170A-M3/52 be used in bidirectional configurations?
No - P6SMB170A-M3/52 is a unidirectional TVS diode, identifiable by its cathode band marking. Bidirectional operation requires the CA-suffixed variant (e.g., P6SMB170CA). Using P6SMB170A-M3/52 in reverse-biased configurations risks catastrophic failure, as it lacks symmetrical avalanche characteristics. For AC line or differential signal protection, always select the explicitly designated bidirectional part.
P6SMB170A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 145V
- Voltage - Breakdown (Min):
- 162V
- Voltage - Clamping (Max) @ Ipp:
- 234V
- Current - Peak Pulse (10/1000µs):
- 2.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB170A-M3/52 FAQ
1.How can I place an order for P6SMB170A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170A-M3/52 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 P6SMB170A-M3/52 reliable?
The price and inventory of P6SMB170A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB170A-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB170A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170A-M3/52?
P6SMB170A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170A-M3/52 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 P6SMB170A-M3/52?
For technical support, including P6SMB170A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170A-M3/52 requirements.
6.How does Aetrix verify that P6SMB170A-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB170A-M3/52 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 P6SMB170A-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB170A-M3/52?
All P6SMB170A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170A-M3/52, 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 P6SMB170A-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB170A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170A-M3/52 Tags
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