My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC220AHM3_A/I
- Part No.:
- 1.5SMC220AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC220AHM3_A/I.pdf
- Description:
- TVS DIODE 185VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,494
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC220AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power and signal lines. It features a 220 V standoff voltage (VWM), 231 V maximum breakdown voltage (VBR), 328 V clamping voltage at 4.6 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive ECUs, industrial motor drives, and telecom power supplies.
For engineers reviewing the 1.5SMC220AHM3_A/I datasheet, 1.5SMC220AHM3_A/I pinout, 1.5SMC220AHM3_A/I application, or 1.5SMC220AHM3_A/I equivalent, key selection criteria include clamping performance under IEC 61000-4-5 surge conditions, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT assembly on standard SMC (DO-214AB) footprints.
Technical Context
This device operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its specified breakdown threshold (209–231 V), then clamping transient energy to ≤328 V while diverting up to 4.6 A (10/1000 μs). Its glass-passivated junction ensures stable leakage (<1 μA at 185 V) and fast response time (<1.0 ns).
Rated for -65 °C to +150 °C junction temperature, it delivers 6.5 W steady-state power dissipation on infinite heatsink at 50 °C ambient and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 185 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC working limit. |
| VBR (Breakdown) | 209–231 V at 1 mA - Voltage range where avalanche breakdown initiates; ensures predictable turn-on under transients. |
| VC (Clamping) | 328 V at IPPM = 4.6 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; critical for downstream IC survival. |
| PPPM | 1500 W - Peak pulse power handling capacity; validates compliance with IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge testing. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance; determines required PCB copper area (0.31" × 0.31") for thermal reliability. |
| TJ max. | +150 °C - Maximum allowable junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including HTOL, TC, and ESD stress tests; supports ASIL-B system designs. |
Pinout & Package
Package: SMC (DO-214AB) - Surface-mount plastic package with matte tin-plated leads, UL 94 V-0 rated molding compound, and polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse voltage reference | Connected to lower-potential side of protected line; defines directionality in unidirectional configuration. |
| Cathode | Avalanche conduction terminal / Clamping node | Connected to higher-potential side (e.g., VBUS); conducts surge current to ground when VREV > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Supports robust protection against IEC 61000-4-5 surges without derating in compact SMC footprint. |
| Glass passivated junction | Ensures stable VBR tolerance (±5%), low leakage (<1 μA), and long-term reliability under thermal cycling. |
| AEC-Q101 qualified (HM3) | Validated for automotive applications including engine control, ADAS power rails, and infotainment supply inputs. |
| MSL Level 1 moisture sensitivity | Enables direct placement without baking; compatible with standard 260 °C lead-free reflow profiles. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a). |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECU power inputs from load dump (ISO 16750-2) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp spikes up to 120 V for <100 ms. Use Value: Limits voltage to ≤328 V during 1500 W surges, preventing damage to PMICs and microcontrollers downstream. |
Use Scenario: Safeguarding IGBT gate drivers and bus voltage sensors in variable-frequency drives exposed to switching-induced dv/dt noise. IC Role / Device Role / Timing Role: Mounted across DC link capacitor terminals to absorb commutation spikes and regenerative energy surges. Use Value: Fast <1 ns response and low RSURGE ensure clamping occurs before sensitive analog front-ends saturate or latch up. |
| Telecom AC/DC Adapter Output | Smart Meter Power Supply Input |
Use Scenario: Secondary-side overvoltage suppression on 48 V PoE-powered equipment after rectification and filtering. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to output rail, triggered only during positive overvoltage events. Use Value: 185 V VWM allows margin above nominal 48 V output while 328 V VC protects Ethernet PHYs and MCU I/Os. |
Use Scenario: Input-stage surge protection on 230 VAC-derived 12 V auxiliary supply in utility meters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: First-line defense on rectified DC bus before linear regulator or buck converter input. Use Value: AEC-Q101 qualification ensures long-term stability in outdoor meter enclosures with wide ambient temperature swings (-40 to +85 °C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ220A-E3/57T | Lower PPPM (400 W), same VWM/VBR range, SMA package (smaller footprint, higher RθJA = 110 °C/W) | Not AEC-Q101 qualified; suitable for commercial-grade consumer electronics only | Select when board space is constrained and surge energy is limited to IEC 61000-4-2 ESD-level events. |
| 1.5KE220A | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 or MSL Level 1 rating | Requires wave soldering; unsuitable for fully SMT automotive production lines | Choose for legacy designs or prototyping where rework flexibility outweighs production efficiency. |
Compared with SMAJ220A-E3/57T and 1.5KE220A, the 1.5SMC220AHM3_A/I uniquely combines 1500 W surge capability, AEC-Q101 qualification, and SMC-compatible SMT manufacturability - making it the only option qualified for volume automotive and industrial applications requiring both high energy handling and process reliability.
Availability
1.5SMC220AHM3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, and telecom power supplies requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC220AHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The 1.5SMC Series was developed for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where AEC-Q101 compliance and 1500 W surge immunity are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC220AHM3_A/I under a 10/1000 μs surge?
The 1.5SMC220AHM3_A/I clamps to a maximum of 328 V when subjected to its rated peak pulse current of 4.6 A with a 10/1000 μs waveform. This value is measured per Figure 1 in the official Vishay datasheet (Document Number: 88303) and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is the 1.5SMC220AHM3_A/I suitable for automotive applications?
Yes, the 1.5SMC220AHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's 1.5SMC Series datasheet. It is explicitly rated for automotive use cases including engine control units, body electronics, and ADAS power rails where reliability under thermal cycling, humidity, and high-energy transients is required.
What does the "HM3" suffix mean in 1.5SMC220AHM3_A/I?
The "HM3" suffix in 1.5SMC220AHM3_A/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "I" denotes packaging in 13-inch tape-and-reel (3500 units/reel), and "A" specifies the 220 V variant within the 1.5SMC family - distinguishing it from non-automotive (E3/M3) or bidirectional (CA) versions.
How does the 1.5SMC220AHM3_A/I compare to bidirectional TVS diodes like 1.5SMC220CA?
The 1.5SMC220AHM3_A/I is unidirectional and features a cathode band for polarity-sensitive placement, whereas 1.5SMC220CA is bidirectional with symmetric clamping in both directions. The 1.5SMC220AHM3_A/I offers AEC-Q101 qualification and HM3 environmental compliance - features not guaranteed for the CA variant unless explicitly ordered with HE3/HM3 suffixes.
What PCB layout guidance applies to the 1.5SMC220AHM3_A/I?
Vishay specifies mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated thermal performance (RθJA = 75 °C/W) and 1500 W pulse power. The SMC (DO-214AB) outline drawing (page 5 of datasheet 88303) defines exact pad dimensions, and the cathode band must align with schematic polarity to ensure correct unidirectional operation.
1.5SMC220AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
1.5SMC220AHM3_A/I FAQ
1.How can I place an order for 1.5SMC220AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC220AHM3_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 1.5SMC220AHM3_A/I reliable?
The price and inventory of 1.5SMC220AHM3_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 1.5SMC220AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC220AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC220AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC220AHM3_A/I?
1.5SMC220AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC220AHM3_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 1.5SMC220AHM3_A/I?
For technical support, including 1.5SMC220AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC220AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC220AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC220AHM3_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 1.5SMC220AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC220AHM3_A/I?
All 1.5SMC220AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC220AHM3_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 1.5SMC220AHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC220AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC220AHM3_A/I 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 …
