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Vishay General Semiconductor - Diodes Division P6SMB170AHM3_B/I
- Part No.:
- P6SMB170AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170AHM3_B/I.pdf
- Description:
- 600W,170V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,083
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Product details
Overview
P6SMB170AHM3_B/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 170 V standoff voltage (VWM), 189 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 rating with 10/1000 μs waveform - deployed in automotive-grade power supply and sensor interface circuits.
For engineers reviewing the P6SMB170AHM3_B/I datasheet, P6SMB170AHM3_B/I pinout, P6SMB170AHM3_B/I application, or P6SMB170AHM3_B/I equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, fast response time, and verified clamping performance under repetitive transients in harsh environments.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable avalanche behavior and low leakage (<1.0 μA at VWM). Its thermal resistance (RθJA = 100 °C/W) and junction temperature limit (TJ max = +150 °C) support reliable operation on standard PCB copper pads without heatsinking.
The device delivers precise transient suppression per IEC 61000-4-5 (10/1000 μs) and meets J-STD-020 MSL Level 1 (260 °C reflow peak), enabling automated SMT assembly in automotive and industrial control modules where voltage spikes from inductive switching or ESD events must be contained below system-level damage thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 145 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 162–179 V at 1.0 mA test current - Ensures predictable, repeatable avalanche onset within tight tolerance band. |
| VC (Clamping Voltage) | 234 V at IPPM = 2.6 A - Limits transient voltage seen by downstream ICs during 10/1000 μs surge events. |
| PPPM (Peak Pulse Power) | 600 W - Sustains high-energy transients without failure; validated per Fig. 1 derating curve. |
| ID (Reverse Leakage) | ≤1.0 μA at VWM - Minimizes standby power loss and avoids false triggering in low-current sensor paths. |
| TJ max | +150 °C - Enables deployment in under-hood automotive electronics and industrial motor drives. |
| AEC-Q101 Qualified | Yes - Validated for automotive reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by single black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line (e.g., ground or return path). |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to higher-potential side (e.g., +12 V rail); band-marked end enables automated optical inspection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEM production and industrial equipment. |
| 600 W peak pulse power (10/1000 μs) | Handles high-energy surges from load dump or inductive kickback without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot across protected components during transient events. |
| MSL Level 1 moisture sensitivity | Enables direct placement into reflow ovens without baking; supports high-volume SMT manufacturing. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V/24 V power inputs in body control modules against ISO 7637-2 load dump pulses and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery feed and LDO input. Use Value: Clamps transients to ≤234 V, preventing damage to downstream PMICs and microcontrollers rated for 36 V absolute max. |
Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLCs from EFT and ESD coupling. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) TVS placed at connector entry point before signal conditioning amplifier. Use Value: Maintains signal integrity with <1 μA leakage at 145 V, while suppressing 4 kV ESD per IEC 61000-4-2. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Safeguarding PoE-powered switch port DC inputs from lightning-induced surges on outdoor Ethernet runs. IC Role / Device Role / Timing Role: Primary clamping element on 48 V DC input rail upstream of DC/DC converter. Use Value: Delivers 600 W pulse handling with 234 V clamping, meeting Telcordia GR-1089-CORE surge immunity requirements. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances (e.g., washing machine drive circuits). IC Role / Device Role / Timing Role: Fast-response TVS mounted across motor terminals to clamp inductive turn-off transients. Use Value: Responds in <1 ns to limit voltage to 234 V, protecting MOSFET H-bridge drivers rated for 250 V breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ170AHE3_A/H | Same VWM (145 V), but lower PPPM (400 W); SMA package (DO-214AC), smaller footprint. | Limited to lower-energy transients; not AEC-Q101 qualified. | Select when space-constrained and automotive qualification is unnecessary. |
| 1.5SMC170AHE3_A/H | Same VWM and PPPM (600 W), but larger SMC (DO-214AB) package; higher RθJA (70 °C/W). | Requires more PCB area; better thermal dissipation only with added copper. | Choose if board layout allows larger footprint and higher thermal mass is needed. |
Compared with P6SMB170AHM3_B/I, SMAJ170AHE3_A/H offers reduced surge capacity and no automotive qualification, while 1.5SMC170AHE3_A/H provides identical electrical specs but demands greater board space and lacks the optimized MSL Level 1 reflow profile.
Availability
P6SMB170AHM3_B/I is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and telecom power supplies requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB170AHM3_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, and protection devices with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications systems, delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 validation.
FAQ
What is the clamping voltage of the P6SMB170AHM3_B/I under a 10/1000 μs surge?
The P6SMB170AHM3_B/I has a maximum clamping voltage (VC) of 234 V at 2.6 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet (Document Number: 88370) and ensures downstream components remain within safe voltage limits during standardized surge events.
Is the P6SMB170AHM3_B/I qualified for automotive applications?
Yes, the P6SMB170AHM3_B/I is AEC-Q101 qualified, as confirmed by the "_B" suffix in its ordering code and documented in Vishay's P6SMB series datasheet revision 09-Jan-2024. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 requirements.
What does the "HM3" suffix indicate in P6SMB170AHM3_B/I?
The "HM3" suffix in P6SMB170AHM3_B/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" indicates tape-and-reel packaging in 13-inch reels (3200 units), and "I" specifies the reel orientation and packaging variant per Vishay's ordering information table.
How does the P6SMB170AHM3_B/I compare to bidirectional TVS diodes?
The P6SMB170AHM3_B/I is unidirectional and intended for DC line protection where polarity is fixed. Unlike bidirectional variants (e.g., P6SMB170CA), it conducts only in reverse breakdown and blocks forward current - making it unsuitable for AC or dual-polarity signal lines but offering tighter leakage control (<1.0 μA) and optimized clamping for asymmetric rails.
What is the thermal resistance of the P6SMB170AHM3_B/I, and how does it affect PCB layout?
The P6SMB170AHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" x 0.2" (5.0 mm x 5.0 mm) copper pads per terminal. This requires adherence to Vishay's recommended pad layout to maintain safe junction temperatures up to +150 °C - oversized or thermally isolated pads will degrade surge endurance.
P6SMB170AHM3_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:
- 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_B/I FAQ
1.How can I place an order for P6SMB170AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170AHM3_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 P6SMB170AHM3_B/I reliable?
The price and inventory of P6SMB170AHM3_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 P6SMB170AHM3_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB170AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170AHM3_B/I?
P6SMB170AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170AHM3_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 P6SMB170AHM3_B/I?
For technical support, including P6SMB170AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170AHM3_B/I requirements.
6.How does Aetrix verify that P6SMB170AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB170AHM3_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 P6SMB170AHM3_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB170AHM3_B/I?
All P6SMB170AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170AHM3_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 P6SMB170AHM3_B/I part is unused and in its original packaging.
Return procedure for P6SMB170AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170AHM3_B/I Tags
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