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Vishay General Semiconductor - Diodes Division P6SMB170AHM3_A/H
- Part No.:
- P6SMB170AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170AHM3_A/H.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,346
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Product details
Overview
P6SMB170AHM3_A/H 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), 190 V minimum breakdown voltage (VBR), and 234 A peak pulse current (IPPM) under 10/1000 μs waveform. It delivers 600 W peak pulse power for protecting MOSFETs, ICs, and sensor signal lines against inductive switching transients in industrial and automotive electronics.
For engineers reviewing the P6SMB170AHM3_A/H datasheet, P6SMB170AHM3_A/H pinout, P6SMB170AHM3_A/H application, or P6SMB170AHM3_A/H equivalent, key selection criteria include clamping voltage (VC = 234 V), unidirectional polarity with cathode band marking, AEC-Q101 qualification status, and halogen-free RoHS-compliant construction per HM3 suffix.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by transient overvoltage events exceeding its reverse standoff voltage (VWM = 170 V). Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance during repetitive 10/1000 μs pulses at 0.01% duty cycle.
Designed for surface-mount assembly on PCBs with 0.2" × 0.2" copper pads per terminal, it features MSL Level 1 moisture sensitivity, 260 °C lead-free reflow compatibility, and thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 170 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown Voltage) | 190–210 V at 1 mA test current - Confirmed avalanche initiation range for reliable overvoltage triggering |
| VC (Clamping Voltage) | 234 V at 234 A IPPM - Peak voltage seen by protected circuit during worst-case transient |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability under standardized 10/1000 μs waveform |
| ID (Reverse Leakage) | 1.0 μA max at 170 V - Minimal standby current draw preserving system efficiency |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by molded band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; enables unidirectional clamping to ground |
| Cathode | Reverse-biased clamping terminal | Marked with band; connected to higher-potential side (e.g., supply rail or signal line) for transient shunting |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power rating | Enables robust suppression of high-energy transients without degradation across 10/1000 μs waveforms |
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| MSL Level 1 rating | Allows unlimited floor life and compatibility with standard lead-free reflow profiles up to 260 °C peak |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensors |
| Low clamping ratio (VC/VBR ≈ 1.23) | Minimizes overvoltage stress on downstream components during transient events |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in engine control modules from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between supply rail and chassis ground to clamp surges above 170 V. Use Value: Limits peak rail voltage to 234 V, preventing damage to microcontrollers and CAN transceivers rated for ≤ 36 V absolute maximum. |
Use Scenario: Safeguarding analog output lines of pressure or temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS mounted at connector interface to divert ESD and inductive kickback away from ADC input stages. Use Value: With 1.0 μA leakage at 170 V, avoids DC offset errors while clamping 8 kV contact ESD to <234 V within nanoseconds. |
| Telecom Interface Protection | Consumer Device DC Input Protection |
Use Scenario: Shielding RS-485 transceiver bus lines from lightning-induced surges in outdoor base station equipment. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on differential pair, referenced to local ground plane. Use Value: 234 V clamping voltage preserves signal integrity during 10/1000 μs transients up to 600 W, meeting IEC 61000-4-5 Level 3. |
Use Scenario: Securing 19 V DC input of laptop docking stations against accidental AC adapter misconnection or hot-swap spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main input rail upstream of DC-DC converters. Use Value: Halogen-free HM3 construction supports environmental compliance; 150 °C TJ max allows operation near heat-generating power stages. |
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-E3/52 | Same VWM (170 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when board space is constrained and automotive qualification is unnecessary |
| 1.5SMC170AHE3_A | Same VWM (170 V), higher PPPM (1500 W), SMC package (larger, higher thermal mass) | Supports longer-duration surges; requires larger PCB pad area and layout revision | Choose for industrial motor drives where 10/1000 μs transients exceed 600 W energy limits |
Compared with P6SMB170AHM3_A/H, SMAJ170A-E3/52 offers smaller size but reduced surge capacity and no automotive qualification, while 1.5SMC170AHE3_A provides higher power handling at the cost of larger footprint and non-drop-in replacement-making P6SMB170AHM3_A/H the optimal balance of AEC-Q101 compliance, 600 W rating, and SMB footprint for space-constrained automotive and industrial designs.
Availability
P6SMB170AHM3_A/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom port surge suppression requiring stable component supply and full traceability.
Supply support for P6SMB170AHM3_A/H 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, efficiency, and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems, combining AEC-Q101 qualification, 600 W pulse capability, and compact SMB packaging for automated manufacturing.
FAQ
What is the clamping voltage of the P6SMB170AHM3_A/H under maximum rated surge current?
The P6SMB170AHM3_A/H has a maximum clamping voltage (VC) of 234 V when subjected to its rated peak pulse current (IPPM) of 234 A under the standard 10/1000 μs waveform. This value is measured at the device terminals and defines the upper voltage limit imposed on the protected circuit during transient events. The P6SMB170AHM3_A/H maintains this clamping performance across its specified operating temperature range and is validated per JEDEC standards.
Is the P6SMB170AHM3_A/H suitable for automotive applications?
Yes, the P6SMB170AHM3_A/H is AEC-Q101 qualified, as indicated by the HM3 suffix, confirming compliance with stress tests including high-temperature reverse bias, temperature cycling, and ESD. It is designed for under-hood and body electronics applications where ambient temperatures reach +125 °C and transient immunity must meet ISO 7637-2 and ISO 16750-2 requirements. The P6SMB170AHM3_A/H meets these needs with its 150 °C maximum junction temperature and 600 W peak pulse rating.
What does the "HM3" suffix signify in P6SMB170AHM3_A/H?
The "HM3" suffix in P6SMB170AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., E3 or M3) and confirms adherence to automotive reliability standards, material content restrictions, and process controls required for safety-critical vehicle subsystems. The P6SMB170AHM3_A/H also meets JESD201 Class 2 whisker resistance and MSL Level 1 handling requirements.
How does the P6SMB170AHM3_A/H compare to bidirectional TVS diodes in the same series?
The P6SMB170AHM3_A/H is unidirectional, meaning it conducts only in reverse breakdown to clamp positive transients relative to ground-ideal for DC supply rail protection. Bidirectional variants (e.g., P6SMB170CA) suppress both polarities and are used on AC or differential lines. The P6SMB170AHM3_A/H offers tighter VBR tolerance and lower leakage than equivalent bidirectional parts, but cannot protect against negative-going surges without additional circuitry.
What is the thermal resistance profile of the P6SMB170AHM3_A/H?
The P6SMB170AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. These values assume standard JEDEC test conditions and directly impact steady-state power dissipation limits and transient thermal response. For sustained operation, the P6SMB170AHM3_A/H's 5.0 W power dissipation rating at TA = 50 °C must be derated above that temperature using the published derating curve.
P6SMB170AHM3_A/H 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/H FAQ
1.How can I place an order for P6SMB170AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170AHM3_A/H 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/H reliable?
The price and inventory of P6SMB170AHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for P6SMB170AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170AHM3_A/H?
P6SMB170AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170AHM3_A/H 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/H?
For technical support, including P6SMB170AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170AHM3_A/H requirements.
6.How does Aetrix verify that P6SMB170AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB170AHM3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of P6SMB170AHM3_A/H?
All P6SMB170AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170AHM3_A/H, 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/H part is unused and in its original packaging.
Return procedure for P6SMB170AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170AHM3_A/H Tags
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