My Inquiry
My Account
Vishay General Semiconductor - Diodes Division P6SMB170A-E3/52
;;2.jpg)
- Part No.:
- P6SMB170A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB170A-E3/52.pdf
- Description:
- TVS DIODE 145VWM 234VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,644
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6SMB170A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in 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 - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the P6SMB170A-E3/52 datasheet, P6SMB170A-E3/52 pinout, P6SMB170A-E3/52 application, or P6SMB170A-E3/52 equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, clamping performance under 10/1000 μs transients, thermal resistance (RθJA = 100 °C/W), and AEC-Q101 qualification eligibility via HE3/HM3 variants.
Technical Context
The P6SMB170A-E3/52 operates as a unidirectional avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to clamp transient overvoltages before downstream ICs or MOSFETs are damaged. Its 170 V stand-off rating targets high-voltage DC rails such as 150 V industrial bus lines or 120 VAC-derived DC supplies.
It is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports continuous power dissipation of 5.0 W at 50 °C on infinite heatsink, and maintains operation across -65 °C to +150 °C junction temperature range - validated per J-STD-020 MSL Level 1 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 170 V - Maximum continuous reverse voltage before significant leakage; sets operating margin above 150 V nominal rail. |
| VBR (Breakdown) | 162–179 V at 1 mA - Confirmed avalanche initiation range; ensures reliable turn-on during transients exceeding VWM. |
| VC (Clamping) | 234 V at 2.6 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on 250 V-rated components. |
| PPPM | 600 W - Sustains standardized 10/1000 μs lightning/surge pulses without failure; enables IEC 61000-4-5 Level 3 compliance. |
| ID (Leakage) | 1.0 μA max at 170 V - Negligible standby current; avoids loading of high-impedance sensor bias networks. |
| TJ max | +150 °C - Enables deployment in under-hood automotive or enclosed industrial enclosures without derating. |
| RθJA | 100 °C/W - Predictable thermal rise on standard 0.2" × 0.2" copper pads; informs PCB layout for sustained power handling. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant (E3 suffix), UL 94 V-0 molding compound. Cathode indicated by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (reverse-biased mode) | Connected to protected line; conducts during overvoltage to shunt energy to ground. |
| Cathode | Current exit terminal (reverse-biased mode) | Connected to system ground or lower-potential reference; defines unidirectional conduction path. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 surges up to 1 kV open-circuit on 2 Ω source impedance. |
| Glass passivated chip junction | Ensures stable VBR over lifetime and humidity exposure; eliminates risk of junction corrosion in humid environments. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without popcorn cracking or delamination; no pre-bake required. |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications requiring validated reliability per stress-test requirements. |
| Low profile SMB package | 0.220" × 0.130" footprint fits dense PCB layouts; compatible with automated pick-and-place equipment. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and chassis ground to clamp positive-going transients while blocking normal operating voltage. Use Value: Limits voltage excursion to ≤234 V during 10/1000 μs surges, preserving integrity of 250 V-rated op-amps and ADC front-ends. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to relay coil flyback and motor drive noise in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across optocoupler input terminals to absorb repetitive 600 W transients without degradation. Use Value: Maintains <1 μA leakage at 170 V, preventing false triggering of 24 VDC input circuits during steady-state operation. |
| Telecom Line Interface | Power Supply Input Stage |
Use Scenario: Secondary overvoltage protection on AC/DC adapter output rails feeding Ethernet PHYs or PoE controllers in network infrastructure equipment. IC Role / Device Role / Timing Role: Fast-clamping TVS installed after primary MOV/filter stage to suppress residual ring waves and ESD events. Use Value: Responds in <1 ns to clamp 10/1000 μs surges to 234 V, protecting 200 V-rated DC-DC converters downstream. |
Use Scenario: Input-stage transient suppression on 150–200 VDC intermediate bus rails in solar inverters and UPS systems. IC Role / Device Role / Timing Role: Unidirectional TVS tied between high-side rail and ground to divert lightning-induced surges away from gate drivers and isolation barriers. Use Value: Handles 100 A 8.3 ms surge (IFSM), surviving repeated grid-switching events without parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A | Same SMB package, identical VWM/VBR/VC specs, but rated for 600 W with tighter VC tolerance (234 V vs. 235 V typical); JEDEC-qualified variant. | No AEC-Q101 option; limited to commercial-grade automotive use cases where qualification is not mandated. | Select SMBJ170A when JEDEC-standardized testing is prioritized over automotive qualification. |
| 1.5SMC170A | Larger SMC (DO-214AB) package (0.285" × 0.185"), same electrical specs, higher RθJA (70 °C/W), 1.5 kW peak power rating. | Better thermal performance in high-ambient environments; requires larger PCB area and different pick-and-place setup. | Choose 1.5SMC170A when board space permits and thermal margin >30 °C above ambient is required. |
Compared with P6SMB170A-E3/52, SMBJ170A offers identical clamping behavior in a JEDEC-aligned package but lacks AEC-Q101 variants, while 1.5SMC170A trades compactness for superior thermal dissipation and higher surge headroom - making P6SMB170A-E3/52 optimal for space-constrained, AEC-Q101-eligible designs.
Availability
P6SMB170A-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, RoHS compliance, and surface-mount manufacturability.
Supply support for P6SMB170A-E3/52 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, rectifiers, TVS devices, and power MOSFETs with emphasis on reliability, ruggedness, and application-specific validation.
The P6SMB Series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where consistent clamping performance and long-term stability under thermal cycling are critical.
FAQ
What is the clamping voltage of the P6SMB170A-E3/52 under a 10/1000 μs surge?
The P6SMB170A-E3/52 has a maximum clamping voltage (VC) of 234 V when subjected to its rated peak pulse current of 2.6 A with a 10/1000 μs waveform. This value is measured per industry-standard test conditions and ensures predictable overvoltage limiting for downstream components rated up to 250 V. The P6SMB170A-E3/52 achieves this clamping performance while maintaining low leakage and fast response time.
Is the P6SMB170A-E3/52 suitable for automotive applications?
The P6SMB170A-E3/52 itself is a commercial-grade part (E3 suffix), but Vishay offers AEC-Q101-qualified versions under HE3 and HM3 suffixes (e.g., P6SMB170AHE3_B). These qualified variants undergo extended stress testing including temperature cycling, HTRB, and ESD, making them suitable for automotive powertrain and body electronics. The P6SMB170A-E3/52 serves as the baseline design for those qualified derivatives.
What is the thermal resistance of the P6SMB170A-E3/52, and how does it affect PCB layout?
The P6SMB170A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB construction and guides minimum pad sizing and copper pour area. To maintain safe junction temperatures under sustained 5.0 W dissipation, designers must ensure adequate copper area and avoid excessive ambient temperature buildup around the P6SMB170A-E3/52.
How does the P6SMB170A-E3/52 differ from bidirectional TVS diodes like P6SMB170CA?
The P6SMB170A-E3/52 is unidirectional and functions only during positive transients relative to its cathode, whereas P6SMB170CA is bidirectional and clamps both polarities symmetrically. The unidirectional P6SMB170A-E3/52 exhibits lower leakage (<1 μA at 170 V) and is preferred for DC-biased lines like power rails or single-ended signal paths. Bidirectional types are used where AC signals or undefined polarity require symmetrical protection - the P6SMB170A-E3/52 is not interchangeable with P6SMB170CA without circuit review.
What packaging format is used for the P6SMB170A-E3/52, and what does the "/52" suffix indicate?
The P6SMB170A-E3/52 is supplied in 7" diameter plastic tape and reel, with 750 units per reel - the "/52" suffix denotes this specific packaging configuration per Vishay's ordering convention. The "E3" indicates RoHS-compliant, commercial-grade construction with matte tin-plated leads. This format ensures compatibility with high-speed SMT assembly lines and supports traceable lot-level inventory control for the P6SMB170A-E3/52.
P6SMB170A-E3/52 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB170A-E3/52 FAQ
1.How can I place an order for P6SMB170A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB170A-E3/52 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-E3/52 reliable?
The price and inventory of P6SMB170A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB170A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB170A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB170A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB170A-E3/52?
P6SMB170A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB170A-E3/52 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-E3/52?
For technical support, including P6SMB170A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB170A-E3/52 requirements.
6.How does Aetrix verify that P6SMB170A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB170A-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB170A-E3/52?
All P6SMB170A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB170A-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB170A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB170A-E3/52 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
