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Vishay General Semiconductor - Diodes Division P6SMB170AHM3/I
- Part No.:
- P6SMB170AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170AHM3/I.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,213
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Product details
Overview
P6SMB170AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, rated for 170 V standoff voltage (VWM), 179 V maximum breakdown voltage (VBR), and 600 W peak pulse power (10/1000 μs). It clamps transients to 234 V at 2.6 A peak pulse current and is halogen-free, RoHS-compliant, and AEC-Q101 qualified for automotive-grade reliability in power rail and signal line protection.
For engineers reviewing the P6SMB170AHM3/I datasheet, P6SMB170AHM3/I pinout, P6SMB170AHM3/I application, or P6SMB170AHM3/I equivalent, key selection criteria include unidirectional clamping behavior, 170 V working voltage tolerance, 234 V clamping voltage under 2.6 A surge, SMB package thermal resistance (RθJA = 100 °C/W), and AEC-Q101 qualification for automotive electronics.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, designed to shunt transient energy away from sensitive downstream circuitry during ESD or inductive switching events. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 145 V).
The device delivers 600 W peak pulse power handling per 10/1000 μs waveform at 0.01 % duty cycle, with thermal performance defined by RθJA = 100 °C/W and RθJL = 20 °C/W. It supports operating junction temperatures from –65 °C to +150 °C and meets J-STD-020 MSL Level 1 reflow profile (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 145 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin for 170 V nominal rail protection. |
| VBR (Breakdown Voltage) | 162–179 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 234 V at IPPM = 2.6 A - Maximum voltage seen by protected circuit during full-rated 600 W transient; critical for IC survival. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 μs) - Surge energy absorption capability; enables robust protection against IEC 61000-4-5 Level 3/4 surges. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated placement and reflow. |
| Qualification | AEC-Q101 qualified (HM3 suffix) - Validated for automotive underhood and infotainment applications requiring extended temperature and lifetime reliability. |
| Leakage Current | ≤1.0 μA at 145 V - Minimal standby power loss and negligible impact on high-impedance sensor or reference circuits. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, and 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage return path; completes clamping loop during transient conduction. |
| Cathode | High-side connection point | Marked with band; connected to protected line (e.g., 170 V rail); conducts avalanche current when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against severe lightning-induced surges per IEC 61000-4-5 without external series impedance. |
| Glass passivated junction | Ensures long-term stability of VBR and low parametric drift across temperature and lifetime stress conditions. |
| AEC-Q101 qualification (HM3) | Validates suitability for automotive powertrain, body control, and ADAS modules where failure modes are tightly controlled. |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements for industrial and consumer electronics manufacturing. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies SMT line integration and inventory management. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator transients in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power input and ground, activated within <1 ns to limit voltage to ≤234 V during 600 W surges. Use Value: Prevents damage to MCU, CAN transceivers, and voltage regulators exposed to ISO 7637-2 Pulse 5a (load dump) up to 120 V peak. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) TVS mounted directly at connector entry point to suppress ESD and inductive kickback from solenoid actuation. Use Value: Maintains signal integrity below 145 V standoff while clamping fast transients to 234 V, preserving ADC accuracy and preventing false triggers. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing 48 V PoE-powered switch ports and base station RF module inputs against induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Primary-level TVS on DC input rail upstream of DC/DC converters; coordinates with secondary TVS and MOVs in multi-stage architecture. Use Value: Absorbs 600 W pulses without degradation, enabling compliance with GR-1089-CORE telecom immunity requirements. | Use Scenario: Shielding microcontroller I/O and gate driver inputs in washing machine motor control boards from commutation spikes generated by BLDC motors. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) unidirectional clamp on low-voltage logic rails (e.g., 3.3 V, 5 V) tied to motor driver enable/fault lines. Use Value: Limits transient overshoot to 234 V referenced to ground, preventing latch-up or permanent damage to CMOS inputs during motor stall events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ170A-E3/5B | Same VWM/VBR/VC specs but SMA package (smaller footprint, higher RθJA = 140 °C/W); no AEC-Q101 qualification. | Preferred for space-constrained consumer PCBs where automotive qualification is not required. | Select when board area is limited and automotive reliability is unnecessary; verify thermal derating at 100 °C ambient. |
| 1.5SMC170AHE3_A/H | Same electrical specs but SMC (DO-214AB) package (larger, lower RθJA = 60 °C/W); AEC-Q101 qualified; higher IPPM (2.9 A). | Better suited for high-power industrial drives where thermal margin and surge headroom are critical. | Choose for demanding thermal environments (>85 °C ambient) or where 2.9 A IPPM provides needed safety margin beyond 2.6 A. |
Compared with P6SMB170AHM3/I, SMAJ170A-E3/5B offers smaller size but reduced thermal performance and no automotive qualification, while 1.5SMC170AHE3_A/H delivers superior thermal dissipation and higher surge current capacity at the cost of larger PCB footprint.
Availability
P6SMB170AHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom power inputs, and consumer appliance motor controls requiring stable component supply, AEC-Q101 compliance, and consistent SMB package form factor.
Supply support for P6SMB170AHM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets high-energy transient suppression in automotive, industrial, and telecom systems, engineered for robust clamping, low leakage, and standardized surface-mount compatibility across voltage grades.
FAQ
What is the clamping voltage of the P6SMB170AHM3/I under its rated peak pulse current?
The P6SMB170AHM3/I has a maximum clamping voltage (VC) of 234 V at its rated peak pulse current (IPPM) of 2.6 A, measured using a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full 600 W transient event and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2. The P6SMB170AHM3/I maintains this clamping performance across its specified operating temperature range.
Is the P6SMB170AHM3/I suitable for automotive applications?
Yes, the P6SMB170AHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It is validated for use in automotive powertrain, body electronics, and infotainment systems where reliability under extended temperature cycling, humidity, and mechanical stress is required. The P6SMB170AHM3/I meets MSL Level 1 and supports reflow profiles up to 260 °C peak.
What does the "I" suffix in P6SMB170AHM3/I signify?
The "I" suffix in P6SMB170AHM3/I indicates packaging in a 13-inch diameter plastic tape and reel, containing 3200 units per reel. This format is optimized for high-volume automated assembly lines and aligns with industry-standard EIA-481 specifications. The "HM3" portion confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction, while "P6SMB170A" identifies the 170 V unidirectional TVS variant.
How does the P6SMB170AHM3/I compare to bidirectional TVS diodes in the same series?
The P6SMB170AHM3/I is unidirectional, meaning it conducts only in reverse bias (cathode positive) and blocks forward current like a rectifier. Bidirectional variants (e.g., P6SMB170CA) provide symmetrical clamping in both polarities and are used for AC lines or differential signals. The P6SMB170AHM3/I offers tighter VBR tolerance and lower leakage than its bidirectional counterparts but requires correct polarity orientation during placement.
What is the maximum operating junction temperature for the P6SMB170AHM3/I?
The P6SMB170AHM3/I has a maximum operating junction temperature (TJ max.) of +150 °C, with a storage temperature range from –65 °C to +150 °C. This rating enables reliable operation in under-hood automotive environments and industrial enclosures. Thermal design must account for RθJA = 100 °C/W and recommended 0.2" × 0.2" copper pads to maintain junction temperature within limits during repetitive surge events.
P6SMB170AHM3/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):
- 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:
- 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)
P6SMB170AHM3/I FAQ
1.How can I place an order for P6SMB170AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170AHM3/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 P6SMB170AHM3/I reliable?
The price and inventory of P6SMB170AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB170AHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB170AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170AHM3/I?
P6SMB170AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170AHM3/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 P6SMB170AHM3/I?
For technical support, including P6SMB170AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170AHM3/I requirements.
6.How does Aetrix verify that P6SMB170AHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB170AHM3/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 P6SMB170AHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB170AHM3/I?
All P6SMB170AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170AHM3/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 P6SMB170AHM3/I part is unused and in its original packaging.
Return procedure for P6SMB170AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170AHM3/I Tags
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