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Vishay General Semiconductor - Diodes Division P6SMB220CAHM3/I
- Part No.:
- P6SMB220CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB220CAHM3/I.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,854
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Product details
Overview
P6SMB220CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal and power lines. It features a 185 V standoff voltage (VWM), 220 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 MOSFETs, ICs, and sensor signal lines in industrial and automotive electronics.
For engineers reviewing the P6SMB220CAHM3/I datasheet, P6SMB220CAHM3/I pinout, P6SMB220CAHM3/I application, or P6SMB220CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification status, SMB package thermal performance (RθJA = 100 °C/W), and compliance with IEC 61000-4-2/4-4/4-5 surge immunity standards.
Technical Context
This bidirectional TVS diode operates symmetrically across both polarities, delivering consistent clamping behavior during positive and negative transients without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), while the low incremental surge resistance enables rapid energy diversion during ESD or lightning-induced surges.
The device is rated for 150 °C maximum junction temperature and meets J-STD-020 MSL Level 1 moisture sensitivity with 260 °C lead-free reflow peak. The HM3 suffix confirms halogen-free, RoHS-compliant construction and AEC-Q101 qualification - validated for automotive-grade reliability in engine control units and ADAS sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 185 V - maximum continuous reverse voltage before clamping initiates; defines safe operating margin below breakdown |
| VBR (Breakdown Voltage) | 209–231 V at 1 mA - precise voltage threshold where avalanche conduction begins under transient stress |
| VC (Clamping Voltage) | 328 V at IPPM = 1.8 A - peak voltage seen by protected circuit during 10/1000 μs surge; determines downstream component stress |
| PPPM (Peak Pulse Power) | 600 W - maximum transient energy dissipation capability with standard 10/1000 μs waveform at 0.01% duty cycle |
| RθJA | 100 °C/W - thermal resistance from junction to ambient; requires ≥5.0 mm × 5.0 mm copper pads per terminal for rated derating |
| TJ max. | 150 °C - maximum allowable junction temperature; supports operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - qualified per stress test requirements for automotive electronic components including temperature cycling and HTRB |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated terminals, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One end of symmetrical avalanche junction; conducts during negative-going surges |
| Cathode | Transient current entry (positive polarity) | Other end of symmetrical avalanche junction; conducts during positive-going surges |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 (4 kV line-to-line) surges with margin when mounted on recommended pad layout |
| AEC-Q101 qualified (HM3) | Validated for automotive applications including powertrain and body electronics requiring long-term reliability |
| MSL Level 1, 260 °C peak | Compatible with standard lead-free reflow profiles without baking or special handling |
| Low leakage & tight VBR tolerance | <1.0 μA ID at 185 V and ±5% VBR window ensure minimal standby power loss and predictable turn-on behavior |
Applications
| Automotive Sensor Signal Protection | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional transient clamp placed directly at connector interface to limit voltage excursion before reaching sensitive transceiver or ADC input. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-2 ±15 kV contact discharge without latch-up or parametric shift. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers against field wiring surges and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input front-end, coordinated with series impedance and filtering to meet IEC 61000-4-4/4-5 immunity requirements. Use Value: Limits transient voltage to ≤328 V during 1 kV/500 A 10/1000 μs surge, preventing damage to precision op-amps and isolation amplifiers. |
| Telecom Line Interface Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Shielding Ethernet PHY magnetics secondary side and RS-485 transceiver I/O pins from induced lightning surges in outdoor telecom equipment. IC Role / Device Role / Timing Role: Secondary-stage TVS after gas discharge tube (GDT) or polymer PTC, providing fast-response clamping for residual transients. Use Value: Sub-1 ns response time and 328 V clamping enable compliance with GR-1089-CORE Level 3 (10/700 μs, 6 kV) when cascaded with primary protection. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers in smart appliance motor control boards from commutation spikes generated by BLDC or universal motors. IC Role / Device Role / Timing Role: Localized clamp adjacent to motor driver IC output pins and MCU reset lines to suppress inductive kickback. Use Value: Withstands repetitive 600 W pulses at 0.01% duty cycle, enabling robust protection in high-cycle washing machine or HVAC blower applications. |
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/VBR/VC ratings but in smaller SMA (DO-214AC) package; RθJA = 140 °C/W vs. 100 °C/W | Limited power derating above 75 °C ambient; unsuitable for high-temperature automotive under-hood use | Select when board space is constrained and thermal environment remains <60 °C ambient |
| 1.5KE220CA | Through-hole TO-218 package; higher PPPM (1500 W) but larger footprint and no AEC-Q101 qualification | Not suitable for automated SMT assembly or automotive qualification requirements | Select only for legacy through-hole designs requiring higher single-pulse energy handling |
Compared with SMAJ220CA and 1.5KE220CA, P6SMB220CAHM3/I delivers superior thermal performance in SMT form factor and certified automotive reliability - making it the preferred choice for new automotive and industrial designs requiring AEC-Q101 compliance and compact layout.
Availability
P6SMB220CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line protection, and consumer appliance motor drive circuits requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB220CAHM3/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 optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robustness under repetitive surge stress and qualified to AEC-Q101 for mission-critical electronics.
FAQ
What does the "CA" suffix indicate in P6SMB220CAHM3/I?
The "CA" suffix in P6SMB220CAHM3/I denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage clamping for both positive and negative polarity surges. Unlike unidirectional variants (e.g., P6SMB220A), it has no cathode band marking and functions identically in either orientation - essential for protecting AC-coupled or floating signal paths without polarity constraints. This is confirmed in Vishay's P6SMB datasheet revision 09-Jan-2024, section "DEVICES FOR BIDIRECTION APPLICATIONS".
Is P6SMB220CAHM3/I qualified for automotive applications?
Yes, P6SMB220CAHM3/I is AEC-Q101 qualified, as indicated by the "HM3" suffix - denoting halogen-free, RoHS-compliant construction and full qualification per AEC-Q101 stress tests including temperature cycling, high-temperature reverse bias (HTRB), and accelerated life testing. It is explicitly listed in the Vishay P6SMB datasheet (Document Number: 88370, Revision: 09-Jan-2024) under "Base P/NHM3_X - halogen-free, RoHS-compliant, and AEC-Q101 qualified", with "_I" specifying 13-inch tape-and-reel packaging.
What is the maximum clamping voltage of P6SMB220CAHM3/I and under what test condition?
The maximum clamping voltage (VC) of P6SMB220CAHM3/I is 328 V, measured at a peak pulse current (IPPM) of 1.8 A using the standardized 10/1000 μs double-exponential waveform. This value is specified in the "ELECTRICAL CHARACTERISTICS" table on page 2 of the Vishay P6SMB datasheet (Document Number: 88370), and represents the worst-case voltage imposed on the protected circuit during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the SMB (DO-214AA) package of P6SMB220CAHM3/I affect thermal performance?
The SMB (DO-214AA) package of P6SMB220CAHM3/I delivers a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This is significantly lower than smaller packages like SMA (RθJA = 140 °C/W), enabling higher sustained power dissipation and improved reliability in thermally demanding environments such as automotive under-hood applications - per Vishay's Thermal Characteristics table on page 3 of datasheet 88370.
Can P6SMB220CAHM3/I replace P6SMB220A in a design?
No, P6SMB220CAHM3/I cannot directly replace P6SMB220A because they differ fundamentally in polarity: P6SMB220CAHM3/I is bidirectional (no polarity marking, symmetrical clamping), while P6SMB220A is unidirectional (cathode band marked, conducts only in reverse bias). Substituting them without circuit review risks improper clamping during positive transients or forward conduction failure. The datasheet explicitly separates CA (bidirectional) and A (unidirectional) variants in all electrical tables and application notes.
P6SMB220CAHM3/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:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for P6SMB220CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB220CAHM3/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/I reliable?
The price and inventory of P6SMB220CAHM3/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/I is usually 5 days.
3.What payment methods are accepted for P6SMB220CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB220CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB220CAHM3/I?
P6SMB220CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB220CAHM3/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/I?
For technical support, including P6SMB220CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB220CAHM3/I requirements.
6.How does Aetrix verify that P6SMB220CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB220CAHM3/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/I meets industry standards.
7.What is the process for return or replacement of P6SMB220CAHM3/I?
All P6SMB220CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB220CAHM3/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/I part is unused and in its original packaging.
Return procedure for P6SMB220CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB220CAHM3/I Tags
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