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Vishay General Semiconductor - Diodes Division P6SMB220CAHM3_A/I
- Part No.:
- P6SMB220CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB220CAHM3_A/I.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB220CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 220 V standoff voltage (VWM), 252 V minimum breakdown voltage (VBR), 328 V maximum clamping voltage (VC) at 1.8 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect automotive sensor interfaces, industrial I/O lines, and telecom line cards against ESD and inductive switching surges.
For engineers reviewing the P6SMB220CAHM3_A/I datasheet, P6SMB220CAHM3_A/I pinout, P6SMB220CAHM3_A/I application, or P6SMB220CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, SMB (DO-214AA) package compatibility, thermal resistance (RθJA = 100 °C/W), and compliance with J-STD-020 MSL level 1 reflow profile.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while the low incremental surge resistance supports rapid energy dissipation during transient events.
The device is rated for repetitive 10/1000 μs pulses at 0.01 % duty cycle and derates linearly above TA = 25 °C per Figure 2. Junction temperature is limited to 150 °C, and thermal resistance from junction-to-ambient (RθJA = 100 °C/W) assumes mounting on 0.2" × 0.2" copper pads - critical for sustained surge handling in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 220 V - Maximum continuous reverse voltage before significant conduction begins; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 252–277 V at IT = 1 mA - Voltage at which device enters avalanche conduction; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 328 V at IPPM = 1.8 A - Peak voltage seen by protected circuit during specified 10/1000 μs transient; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy absorption capability under standardized 10/1000 μs waveform; validates robustness against lightning or inductive spikes. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient air; requires adequate PCB copper area (0.2" × 0.2" pads) to maintain TJ ≤ 150 °C under repeated surges. |
| TJ max. | +150 °C - Maximum allowable junction temperature; sets upper limit for ambient + self-heating under worst-case surge repetition. |
| MSL Level | Level 1 (J-STD-020) - No floor life limitation; compatible with standard reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve as identical avalanche junction endpoints; no cathode band marking - enables placement in either orientation on AC or differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled, differential, or floating signal lines without polarity constraints - eliminates need for dual unidirectional devices. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - suitable for engine control, ADAS sensor interfaces, and infotainment power rails. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for industrial and consumer electronics without compromising surge performance or thermal stability. |
| 600 W peak pulse power | Handles high-energy transients such as ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges when properly mounted on recommended copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.30) | Minimizes overvoltage overshoot during clamping - reduces risk of damage to sensitive downstream ICs like CAN transceivers or ADC front-ends. |
Applications
| Automotive Sensor Protection | Industrial I/O Module Protection |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine compartments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed across signal pair or signal-to-ground to shunt transients before reaching MCU analog input or LIN transceiver. Use Value: Maintains signal integrity under ISO 16750-2 load dump (up to 35 V) and ISO 7637-2 Pulse 5a (100 V/2 Ω), preventing latch-up or parametric shift in A/D converters. |
Use Scenario: Safeguarding 24 V DC digital input channels on PLC modules subjected to relay coil flyback and field wiring ESD. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminal block, positioned ahead of optocoupler or Schmitt trigger input stage. Use Value: Limits transient voltage to ≤328 V during 1.8 A surges, ensuring optocoupler CTR remains stable and input logic thresholds are not violated. |
| Telecom Line Card Protection | Consumer Power Adapter EMI Filtering |
Use Scenario: Shielding Ethernet PHY interface or RS-485 transceivers on base station line cards from induced lightning surges and AC mains coupling. IC Role / Device Role / Timing Role: Secondary-level TVS on differential data lines (e.g., between transformer center-tap and transceiver), working with primary GDT or MOV. Use Value: Responds within <1 ns to clamp common-mode transients up to 600 W, preserving signal eye diagram integrity and reducing bit error rate during surge events. |
Use Scenario: Suppressing fast-rising noise and switching spikes on secondary-side DC output rails of USB-C PD adapters and smart chargers. IC Role / Device Role / Timing Role: Low-capacitance TVS placed across +VOUT and GND to absorb MOSFET switching noise and ESD from user ports. Use Value: Provides 328 V clamping with <1.0 μA leakage at 220 V, avoiding standby current penalty while meeting IEC 61000-4-2 Level 4 (15 kV air) immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220CA | Same VWM (220 V), lower PPPM (400 W), higher VC (356 V at 1.6 A), SMA package (smaller footprint, higher RθJA). | Limited to lower-energy transients; less suitable for automotive load dump or industrial 24 V rail protection requiring 600 W margin. | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin with RθJA = 140 °C/W. |
| SMCJ220CA | Same VWM (220 V), higher PPPM (1500 W), lower VC (356 V at 4.3 A), larger SMC (DO-214AB) package. | Better suited for high-reliability 24/48 V DC power bus protection where PCB layout allows larger pad area and higher surge immunity is required. | Choose when protecting main power rails subject to IEC 61000-4-5 Level 4 (4 kV/2 Ω); requires 0.4" × 0.4" copper pads for full rating. |
Compared with SMAJ220CA and SMCJ220CA, P6SMB220CAHM3_A/I delivers balanced surge capability (600 W), industry-standard SMB footprint, and AEC-Q101 qualification - making it optimal for space-constrained automotive and industrial modules needing validated reliability without overspec'ing package size or cost.
Availability
P6SMB220CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom line card designs requiring stable component supply, halogen-free compliance, and AEC-Q101 qualification.
Supply support for P6SMB220CAHM3_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, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The P6SMB Series targets high-energy transient suppression in automotive, industrial, and telecom systems - engineered for robust clamping, low leakage, and seamless integration into automated SMT assembly lines.
FAQ
What is the clamping voltage of P6SMB220CAHM3_A/I at its rated peak pulse current?
The P6SMB220CAHM3_A/I has a maximum clamping voltage (VC) of 328 V at a peak pulse current (IPPM) of 1.8 A under the 10/1000 μs waveform condition. This value is measured per the test method defined in the Vishay datasheet (Document Number: 88370) and reflects the actual voltage imposed on the protected circuit during a standardized surge event. The P6SMB220CAHM3_A/I maintains this clamping performance across its qualified operating temperature range and is validated for AEC-Q101 compliance.
Is P6SMB220CAHM3_A/I suitable for automotive applications?
Yes, P6SMB220CAHM3_A/I is AEC-Q101 qualified (denoted by the HM3 suffix), meaning it has passed stress tests including temperature cycling, high-temperature reverse bias, and surge endurance required for automotive under-hood and cabin electronics. Its bidirectional architecture, 220 V standoff, and 600 W pulse rating make P6SMB220CAHM3_A/I appropriate for protecting LIN, CAN FD, and sensor signal lines in vehicles - provided PCB layout follows Vishay's recommended 0.2" × 0.2" copper pad guidelines.
What does the "CA" suffix indicate in P6SMB220CAHM3_A/I?
The "CA" suffix in P6SMB220CAHM3_A/I specifies a bidirectional configuration - meaning the device provides symmetrical transient suppression in both forward and reverse directions, with no polarity marking on the SMB (DO-214AA) package. This differs from "A"-suffixed variants (e.g., P6SMB220AHM3_A/I), which are unidirectional and feature a cathode band. The CA version is ideal for AC-coupled, differential, or floating signal paths where polarity cannot be guaranteed.
What is the thermal resistance and maximum junction temperature for P6SMB220CAHM3_A/I?
P6SMB220CAHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per Vishay's specification, and a maximum junction temperature (TJ max.) of +150 °C. These values define the thermal design boundary: for example, at 5.0 W steady-state dissipation (PD), the junction would rise 500 °C above ambient - confirming that P6SMB220CAHM3_A/I is intended for transient-only operation, not continuous power dissipation.
How does the HM3 suffix differ from E3 or M3 in P6SMB220CAHM3_A/I?
The HM3 suffix in P6SMB220CAHM3_A/I indicates halogen-free, RoHS-compliant construction combined with AEC-Q101 qualification - distinguishing it from E3 (RoHS-compliant commercial grade) and M3 (halogen-free RoHS-compliant commercial grade). The "_A/I" denotes tape-and-reel packaging in 13-inch reels (I = 3200 units/reel), and the "B" revision code (implied in HM3_B) confirms AEC-Q101 testing per Vishay's ordering matrix. This makes P6SMB220CAHM3_A/I suitable for mission-critical automotive and industrial deployments where both environmental compliance and reliability validation are mandatory.
P6SMB220CAHM3_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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 1.8A
- 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)
P6SMB220CAHM3_A/I FAQ
1.How can I place an order for P6SMB220CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB220CAHM3_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 P6SMB220CAHM3_A/I reliable?
The price and inventory of P6SMB220CAHM3_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 P6SMB220CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB220CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB220CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB220CAHM3_A/I?
P6SMB220CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB220CAHM3_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 P6SMB220CAHM3_A/I?
For technical support, including P6SMB220CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB220CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB220CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB220CAHM3_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 P6SMB220CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB220CAHM3_A/I?
All P6SMB220CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB220CAHM3_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 P6SMB220CAHM3_A/I part is unused and in its original packaging.
Return procedure for P6SMB220CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB220CAHM3_A/I Tags
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