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Vishay General Semiconductor - Diodes Division P4SMA220CAHM3/H
- Part No.:
- P4SMA220CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA220CAHM3/H.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,249
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Product details
Overview
P4SMA220CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on signal and power lines. It features a 220 V standoff voltage (VWM), 231 V minimum breakdown voltage (VBR), 328 V maximum clamping voltage (VC) at 0.91 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P4SMA220CAHM3/H datasheet, P4SMA220CAHM3/H pinout, P4SMA220CAHM3/H application, or P4SMA220CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
The P4SMA220CAHM3/H operates as a bidirectional avalanche diode, leveraging glass-passivated junction technology for stable reverse breakdown behavior across both polarities. Its clamping response is optimized for transient suppression under repetitive 10/1000 μs surges at ≤0.01% duty cycle, with thermal derating above 25 °C per Fig. 2.
Designed for surface-mount implementation, it meets MSL Level 1 per J-STD-020 with 260 °C reflow peak, and its SMA (DO-214AC) package supports high-density PCB layouts while maintaining 120 °C/W junction-to-ambient thermal resistance under standard pad conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 185 V - Maximum continuous reverse working voltage before conduction begins in either direction |
| VBR (Breakdown Voltage) | 209–231 V at 1 mA - Confirmed avalanche onset range ensuring predictable clamping threshold |
| VC (Clamping Voltage) | 328 V at IPPM = 0.91 A - Peak voltage seen by protected circuit during specified 10/1000 μs transient |
| PPPM (Peak Pulse Power) | 400 W - Sustained transient energy handling capacity under standardized surge waveform |
| ID (Reverse Leakage) | 1.0 μA at VWM - Minimal standby current draw preserving signal integrity and power efficiency |
| TJ max. | 150 °C - Maximum junction temperature enabling operation in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional device with no polarity marking - symmetrical anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Both terminals serve identical bidirectional conduction paths; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surge events (4 kV/2 Ω) when properly mounted on 5.0 mm × 5.0 mm copper pads |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics requiring extended temperature and lifetime reliability |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for global OEM supply chains and end-of-life recycling |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying SMT manufacturing flow |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp ±200 V transients within nanoseconds. Use Value: Prevents latch-up or permanent damage to precision ADC front-ends and communication ICs operating near 185 V standoff limit. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and 0–10 V analog channels in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-clamp element connected between input terminal and ground, activated only during overvoltage events >185 V. Use Value: Maintains signal fidelity below VWM while limiting fault voltage to ≤328 V, preserving downstream op-amp and isolator integrity. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
|
Use Scenario: Secondary-level transient suppression on Ethernet PHY power rails and auxiliary control lines in telecom base station line cards. IC Role / Device Role / Timing Role: Fast-response shunt device absorbing coupled lightning-induced surges before reaching PMIC or microcontroller. Use Value: Complements primary GDT/MOV stages by providing sub-100 ns clamping action and precise 185 V hold-off for clean DC bias rails. |
Use Scenario: Protecting gate drivers and MCU I/O pins from back-EMF spikes generated by brushed DC motors in smart home appliances. IC Role / Device Role / Timing Role: Bidirectional clamp across motor coil terminals or driver supply inputs to suppress ±300 V switching spikes. Use Value: Enables compact layout with single P4SMA220CAHM3/H replacing dual unidirectional devices, reducing BOM count and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220CA | Same VWM/VBR/VC specs but SMB (DO-214AA) package - 2.5 mm wider, higher RθJA (100 °C/W vs. 120 °C/W) | Higher power density in same footprint not achievable; requires larger pad area for thermal performance | Select when board space allows larger package and higher IPC-7351B land pattern compatibility is preferred |
| 1.5KE220CA | Through-hole TO-218 package; 1500 W PPPM rating but slower response due to higher junction capacitance (>100 pF) | Not suitable for high-speed data lines; limited to power rail or low-frequency signal protection | Choose only for legacy through-hole designs where rework to SMT is impractical and surge energy exceeds 400 W |
Compared with SMBJ220CA and 1.5KE220CA, the P4SMA220CAHM3/H delivers optimal balance of AEC-Q101 qualification, halogen-free compliance, and compact SMA footprint - making it the preferred choice for new automotive and industrial SMT designs requiring verified reliability and manufacturability.
Availability
P4SMA220CAHM3/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog input conditioning, and telecom line card surge protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P4SMA220CAHM3/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, power efficiency, and application-specific validation.
The P4SMA Series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and consumer electronics - engineered for robustness under real-world surge stress and seamless integration into automated SMT assembly lines.
FAQ
What does the "HM3" suffix indicate in P4SMA220CAHM3/H?
The HM3 suffix in P4SMA220CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification - confirming suitability for automotive applications requiring stringent environmental and reliability standards. This designation is validated per Vishay's internal qualification test plan and documented in datasheet revision 09-Jan-2024. The P4SMA220CAHM3/H meets JESD201 Class 2 whisker resistance and MSL Level 1 reflow compatibility.
Is P4SMA220CAHM3/H unidirectional or bidirectional?
P4SMA220CAHM3/H is a bidirectional transient voltage suppressor, as confirmed by the "CA" suffix and absence of cathode band marking. Its electrical characteristics - including symmetric VBR, VC, and ID - apply identically in both directions, enabling use across AC-coupled signals, differential buses, or floating power domains without polarity constraints. This behavior is explicitly defined in the "DEVICES FOR BIDIRECTION APPLICATIONS" section of the P4SMA datasheet.
What is the maximum clamping voltage for P4SMA220CAHM3/H under surge conditions?
The maximum clamping voltage (VC) for P4SMA220CAHM3/H is 328 V at a peak pulse current (IPPM) of 0.91 A with a 10/1000 μs waveform, as specified in the Electrical Characteristics table on page 2 of the datasheet. This value represents the upper bound of voltage imposed on protected circuitry during standardized transient events and is measured under controlled test conditions with 0.2" × 0.2" copper pads.
Can P4SMA220CAHM3/H replace P4SMA220A in a design?
No - P4SMA220CAHM3/H is bidirectional, whereas P4SMA220A is unidirectional. Substituting them without circuit review risks improper clamping during negative transients, potentially damaging downstream components. The "CA" suffix explicitly defines bidirectional functionality, and the two share no pin-to-pin or functional equivalence. Designers must verify polarity requirements and adjust layout accordingly before using P4SMA220CAHM3/H as a replacement.
What is the thermal resistance of P4SMA220CAHM3/H?
The typical thermal resistance, junction-to-ambient (RθJA), for P4SMA220CAHM3/H is 120 °C/W when mounted on the minimum recommended pad layout (0.2" × 0.2" copper pads per terminal), as stated in the Thermal Characteristics table on page 3 of the datasheet. This value assumes still air conditions and directly impacts steady-state power dissipation limits - for example, limiting continuous power (PD) to 3.3 W at TA = 50 °C.
P4SMA220CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, 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):
- 910mA
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
P4SMA220CAHM3/H FAQ
1.How can I place an order for P4SMA220CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA220CAHM3/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 P4SMA220CAHM3/H reliable?
The price and inventory of P4SMA220CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA220CAHM3/H is usually 5 days.
3.What payment methods are accepted for P4SMA220CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA220CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA220CAHM3/H?
P4SMA220CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA220CAHM3/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 P4SMA220CAHM3/H?
For technical support, including P4SMA220CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA220CAHM3/H requirements.
6.How does Aetrix verify that P4SMA220CAHM3/H is sourced from the original manufacturer or authorized distributors?
All P4SMA220CAHM3/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 P4SMA220CAHM3/H meets industry standards.
7.What is the process for return or replacement of P4SMA220CAHM3/H?
All P4SMA220CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA220CAHM3/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 P4SMA220CAHM3/H part is unused and in its original packaging.
Return procedure for P4SMA220CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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