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Vishay General Semiconductor - Diodes Division P6SMB170AHM3_A/I
- Part No.:
- P6SMB170AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170AHM3_A/I.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,519
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Product details
Overview
P6SMB170AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on power and signal lines. It features a 170 V standoff voltage (VWM), 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. It is halogen-free, RoHS-compliant, AEC-Q101 qualified, and used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the P6SMB170AHM3_A/I datasheet, P6SMB170AHM3_A/I pinout, P6SMB170AHM3_A/I application, or P6SMB170AHM3_A/I equivalent, key selection criteria include clamping voltage margin relative to protected circuit's absolute maximum rating, thermal derating above 25 °C ambient, unidirectional polarity alignment with DC rail orientation, and compatibility with automated SMT placement on SMB (DO-214AA) footprint.
Technical Context
This TVS diode operates as a voltage-clamping protection device that remains high-impedance below its 170 V standoff voltage (VWM) and rapidly transitions to low-impedance conduction when transient voltage exceeds its 162–179 V breakdown range (VBR at 1 mA). Its glass-passivated junction ensures stable avalanche behavior and long-term reliability under repetitive surge events.
It delivers 600 W peak pulse power handling per 10/1000 μs waveform with 0.01 % duty cycle, exhibits 100 °C/W typical junction-to-ambient thermal resistance (RθJA), and supports operation from –65 °C to +150 °C junction temperature. The device is rated for 100 A non-repetitive forward surge current (IFSM) and maintains ≤1.0 μA reverse leakage at VWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 170 V - Maximum continuous reverse operating voltage before clamping begins; defines upper limit of normal circuit operation. |
| VBR (Breakdown Voltage) | 162–179 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 234 V at 2.6 A IPPM - Maximum voltage seen by protected circuit during 10/1000 μs transient; critical for IC survivability margin. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capacity under standardized surge waveform; determines protection level against IEC 61000-4-5 surges. |
| ID (Reverse Leakage) | ≤1.0 μA at 170 V - Negligible standby power loss and minimal impact on high-impedance signal lines. |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock testing. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground or lower-potential rail during overvoltage event. |
| Anode (unbanded end) | Reference node | Typically tied to system ground or return path; establishes polarity-dependent clamping direction for unidirectional operation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 4 surges without derating in standard PCB layouts. |
| Halogen-free, RoHS-compliant HM3 suffix | Meets automotive and industrial environmental compliance mandates without compromising surge performance. |
| AEC-Q101 qualification (HM3_A/I variant) | Validated for automotive powertrain and body electronics applications requiring zero-failure field reliability. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), improving protection fidelity for sensitive logic inputs. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without pre-baking or special handling. |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going surges up to ±100 V. Use Value: Limits voltage seen by downstream DC-DC converters and microcontrollers to ≤234 V, preserving functional safety integrity per ISO 7637-2. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors from ESD and inductive coupling in factory automation PLCs. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector interface to shunt transients before reaching ADC input stage. Use Value: Maintains signal integrity with <1.0 μA leakage at 170 V, avoiding DC offset errors while suppressing >8 kV contact ESD per IEC 61000-4-2. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered network switches against lightning-induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary clamping device upstream of hot-swap controller and primary filter capacitors. Use Value: Absorbs 600 W transient energy without thermal runaway, enabling single-device protection architecture compliant with IEEE 802.3bt. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, blenders). IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp inductive kickback during PWM commutation. Use Value: Prevents MOSFET drain-source breakdown with 234 V clamping ceiling, extending FET lifetime and reducing failure-in-field rates. |
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-E3/5B | Same VWM (170 V), higher VC (243 V), lower PPPM (400 W), non-AEC-Q101, commercial-grade only. | Lacks automotive qualification and reduced surge margin; suitable for cost-sensitive consumer designs with lower surge exposure. | Select when AEC-Q101 is not required and board space allows SMA package; verify clamping margin against protected IC's ABSMAX. |
| 1.5SMC170AHE3_A | Same VWM (170 V), identical VC (234 V), same PPPM (600 W), but in larger SMC (DO-214AB) package with higher RθJA (70 °C/W). | Offers identical electrical protection but requires larger PCB footprint and has inferior thermal dissipation on small pads. | Choose only if existing layout uses SMC footprint or higher thermal mass is available; avoid in dense automotive modules. |
Compared with SMAJ170A-E3/5B and 1.5SMC170AHE3_A, P6SMB170AHM3_A/I provides AEC-Q101 qualification in the smallest footprint (SMB), optimal thermal resistance (100 °C/W), and guaranteed 234 V clamping-making it the preferred choice for space-constrained, high-reliability automotive and industrial applications.
Availability
P6SMB170AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power inputs, and consumer appliance motor drives requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB170AHM3_A/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 is engineered for high-energy transient suppression in automotive, industrial, and telecom systems where compact size, AEC-Q101 compliance, and repeatable clamping performance are mandatory design requirements.
FAQ
What is the clamping voltage of P6SMB170AHM3_A/I at its rated peak pulse current?
The P6SMB170AHM3_A/I has a maximum clamping voltage (VC) of 234 V when subjected to its specified peak pulse current (IPPM) of 2.6 A under a 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees the upper voltage limit imposed on protected circuitry during surge events, directly supporting design margin calculations for downstream ICs and MOSFETs.
Is P6SMB170AHM3_A/I suitable for automotive applications?
Yes, P6SMB170AHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction with automotive-grade reliability validation. It is explicitly rated for operation from –65 °C to +150 °C and tested for temperature cycling, mechanical shock, and humidity bias-making it appropriate for engine control units, body electronics, and ADAS power domains.
How does the SMB (DO-214AA) package of P6SMB170AHM3_A/I compare to SMC in thermal performance?
The SMB package of P6SMB170AHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads, versus ~70 °C/W for the larger SMC package. While SMB offers superior board-area efficiency, its higher RθJA requires careful thermal pad design and derating above 25 °C ambient-especially important in enclosed automotive modules where airflow is limited.
What is the reverse leakage current specification for P6SMB170AHM3_A/I at its standoff voltage?
P6SMB170AHM3_A/I specifies a maximum reverse leakage current (ID) of 1.0 μA at its 170 V standoff voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage ensures negligible power loss in always-on circuits and prevents signal distortion on high-impedance sensor outputs, supporting precision analog front-end designs in industrial instrumentation.
Can P6SMB170AHM3_A/I be used in bidirectional configurations?
No, P6SMB170AHM3_A/I is a unidirectional TVS diode, as indicated by the "A" suffix and absence of "CA" in its part number. Bidirectional variants (e.g., P6SMB170CA) exist in the same series but feature symmetric clamping in both polarities. Using P6SMB170AHM3_A/I in bidirectional applications would leave negative-going transients unprotected and may cause catastrophic failure.
P6SMB170AHM3_A/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:
- Obsolete
- 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_A/I FAQ
1.How can I place an order for P6SMB170AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170AHM3_A/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_A/I reliable?
The price and inventory of P6SMB170AHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB170AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170AHM3_A/I?
P6SMB170AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170AHM3_A/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_A/I?
For technical support, including P6SMB170AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170AHM3_A/I requirements.
6.How does Aetrix verify that P6SMB170AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB170AHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB170AHM3_A/I?
All P6SMB170AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170AHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P6SMB170AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170AHM3_A/I Tags
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