My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T220A-M3/5B
;;2.jpg)
- Part No.:
- SM6T220A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T220A-M3/5B.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,563
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T220A-M3/5B from Vishay General Semiconductor is a unidirectional surface-mount TRANSZORB® transient voltage suppressor in SMB (DO-214AA) package, with 209 V to 231 V breakdown voltage (VBR), 188 V stand-off voltage (VWM), 328 V clamping voltage (VC) at 2.0 A peak pulse current, and 600 W peak pulse power rating per 10/1000 μs waveform. It protects MOSFETs and sensor signal lines in automotive powertrain control units against inductive switching transients.
For engineers reviewing the SM6T220A-M3/5B datasheet, SM6T220A-M3/5B pinout, SM6T220A-M3/5B application, or SM6T220A-M3/5B equivalent, key selection criteria include clamping performance at high VWM, halogen-free RoHS compliance (M3 suffix), SMB thermal resistance (RθJA = 100 °C/W), and AEC-Q101 qualification readiness via HM3 variant.
Technical Context
This device operates as a unidirectional avalanche diode for overvoltage protection, featuring glass passivated junction and low inductance design optimized for fast transient response. Its clamping behavior is characterized under standardized 10/1000 μs and 8/20 μs waveforms, with thermal derating above 25 °C per Fig. 2.
The SMB (DO-214AA) package supports automated placement and meets UL 94 V-0 flammability rating. Polarity is marked by cathode band; it delivers 600 W peak pulse power while maintaining 5.0 W steady-state power dissipation on infinite heatsink at 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V - defines minimum and maximum guaranteed avalanche initiation voltage at 1.0 mA test current |
| VWM | 188 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 328 V at 2.0 A - clamping voltage during 10/1000 μs transient, limiting downstream voltage stress |
| PPPM | 600 W - peak pulse power handling capability under standard surge waveform |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance, critical for PCB pad layout and power derating |
| TJ max. | +150 °C - maximum allowable junction temperature, enabling operation in under-hood automotive environments |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 0.220" x 0.205" footprint and matte tin-plated leads |
Pinout & Package
SMB (DO-214AA) package with cathode band marking on unidirectional devices; terminals are matte tin plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to system ground or low-side reference in clamp-to-rail configurations |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line; band-marked end ensures correct orientation during placement |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems |
| Low inductance SMB package | Minimizes voltage overshoot during fast-rising transients (< 1 ns rise time), improving clamping fidelity |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets automotive OEM material compliance requirements without compromising thermal or electrical performance |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without moisture sensitivity concerns |
| Glass passivated junction | Ensures stable VBR and low leakage over lifetime, even under thermal cycling and humidity stress |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protection of microcontroller I/O and gate driver inputs against load dump and inductive kickback in engine control modules. IC Role / Device Role: Unidirectional TVS diode clamping transient energy to safe levels before it reaches sensitive logic or power stages. Use Value: Maintains 188 V stand-off while clamping to 328 V at 2.0 A, preventing latch-up or oxide breakdown in 3.3 V/5 V interface circuits. |
Use Scenario: Safeguarding PLC analog input channels from field wiring surges caused by contactor switching or lightning-induced coupling. IC Role / Device Role: Standoff-and-clamp protector placed across differential sensor inputs or supply rails. Use Value: Delivers 600 W pulse handling with 100 °C/W thermal resistance, allowing compact PCB layout without forced-air cooling. |
| Telecom Base Station Power Rails | Consumer Appliance Mainboard ESD |
Use Scenario: Secondary-level surge suppression on +48 V DC distribution bus feeding RF power amplifiers and backhaul interfaces. IC Role / Device Role: High-voltage unidirectional TVS absorbing repetitive switching transients from DC-DC converters and hot-swap controllers. Use Value: Withstands 150 °C max junction temperature and 2.0 A peak pulse current, supporting long-term reliability in sealed outdoor enclosures. |
Use Scenario: Input-stage protection for smart home appliance mainboards exposed to user-accessible connectors and relay coils. IC Role / Device Role: Cost-effective, automated-placement-compatible transient suppressor for AC/DC front-end and communication ports. Use Value: SMB footprint enables high-density routing; halogen-free M3 construction satisfies global eco-regulatory mandates without redesign. |
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 | Same VWM/VBR range but lower PPPM (400 W); SMA package (larger RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump where 600 W is required | Select SMAJ220A only if board space allows larger SMA and thermal budget permits higher junction temperature rise |
| 1.5SMC220A | Higher PPPM (1500 W) but larger SMC package (DO-214AB); same VBR tolerance and clamping ratio | Better suited for primary-level surge protection where PCB area and mounting strength permit larger case | Choose 1.5SMC220A when system-level surge testing exceeds IEC 61000-4-5 Level 4 and SMB thermal limits are exceeded |
Compared with SMAJ220A and 1.5SMC220A, SM6T220A-M3/5B provides optimal balance of 600 W pulse capability, SMB footprint density, and halogen-free compliance-making it preferred for space-constrained, high-reliability automotive and industrial control designs requiring verified 188 V standoff and 328 V clamping.
Availability
SM6T220A-M3/5B is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive inputs, telecom base station power rails, and consumer appliance mainboard ESD protection requiring stable component supply and halogen-free compliance.
Supply support for SM6T220A-M3/5B 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, precision, and automotive-grade qualification.
The SM6T Series was developed specifically for high-voltage transient suppression in automotive, industrial, and telecom systems where consistent clamping performance, low inductance, and AEC-Q101-ready variants are essential.
FAQ
What is the clamping voltage of SM6T220A-M3/5B at its rated peak pulse current?
The SM6T220A-M3/5B has a maximum clamping voltage (VC) of 328 V at 2.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 1 in the official Vishay datasheet (Document Number: 88385), ensuring predictable voltage limiting during surge events without exceeding downstream IC absolute maximum ratings.
Is SM6T220A-M3/5B qualified to AEC-Q101?
The SM6T220A-M3/5B itself is not AEC-Q101 qualified; it carries the M3 suffix indicating halogen-free, RoHS-compliant commercial grade. However, the identical die in HM3 packaging (e.g., SM6T220AHM3_B/I) is AEC-Q101 qualified. Engineers requiring automotive qualification should specify the HM3 variant instead of M3.
What does the "M3" suffix mean in SM6T220A-M3/5B?
The "M3" suffix in SM6T220A-M3/5B denotes halogen-free, RoHS-compliant construction meeting JEDEC J-STD-201 Class 2 whisker resistance requirements. It confirms compliance with environmental regulations without altering electrical specifications-VBR, VWM, and PPPM remain identical to E3-suffix versions.
Can SM6T220A-M3/5B be used in bidirectional applications?
No-SM6T220A-M3/5B is strictly unidirectional, as indicated by the "A" suffix and absence of "CA". For bidirectional operation, the correct part is SM6T220CA-M3/5B, which features symmetrical breakdown in both directions and no polarity marking. Using SM6T220A-M3/5B in bidirectional circuits will result in forward conduction during negative transients.
What is the thermal resistance of SM6T220A-M3/5B, and how does it affect PCB layout?
The SM6T220A-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value requires adequate copper pour and thermal vias beneath the SMB footprint to maintain TJ ≤ 150 °C during repeated surges; insufficient copper area increases RθJA and risks thermal runaway.
SM6T220A-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- SM6T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 2A
- 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)
SM6T220A-M3/5B FAQ
1.How can I place an order for SM6T220A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T220A-M3/5B 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 SM6T220A-M3/5B reliable?
The price and inventory of SM6T220A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T220A-M3/5B is usually 5 days.
3.What payment methods are accepted for SM6T220A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T220A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T220A-M3/5B?
SM6T220A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T220A-M3/5B 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 SM6T220A-M3/5B?
For technical support, including SM6T220A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T220A-M3/5B requirements.
6.How does Aetrix verify that SM6T220A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SM6T220A-M3/5B 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 SM6T220A-M3/5B meets industry standards.
7.What is the process for return or replacement of SM6T220A-M3/5B?
All SM6T220A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SM6T220A-M3/5B, 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 SM6T220A-M3/5B part is unused and in its original packaging.
Return procedure for SM6T220A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T220A-M3/5B 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 …
