My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SM6T22AHE3_A/H
;;2.jpg)
- Part No.:
- SM6T22AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SM6T22AHE3_A/H.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,581
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SM6T22AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 30.6 V maximum clamping voltage (VC) at 20 A peak pulse current, 600 W peak pulse power (10/1000 μs), and AEC-Q101 qualification for automotive applications such as sensor line protection.
For engineers reviewing the SM6T22AHE3_A/H datasheet, SM6T22AHE3_A/H pinout, SM6T22AHE3_A/H application, or SM6T22AHE3_A/H equivalent, key selection criteria include unidirectional polarity, 18.8 V stand-off voltage (VWM), 1 μA max reverse leakage at VWM, 150 °C max junction temperature, and compliance with J-STD-020 MSL Level 1 reflow profile.
Technical Context
The SM6T22AHE3_A/H operates as a unidirectional avalanche diode, triggering conduction when reverse voltage exceeds its 20.9–23.1 V breakdown threshold to divert transient energy away from protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage under steady-state conditions.
Designed for 10/1000 μs waveform transients, it delivers 600 W peak pulse power with 30.6 V clamping at 20 A, and exhibits low thermal resistance (RθJA = 100 °C/W, RθJL = 20 °C/W) enabling reliable operation up to 150 °C junction temperature without heatsinking on standard PCB pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise avalanche onset for predictable clamping initiation |
| VWM | 18.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 30.6 V at 20 A (10/1000 μs) - limits downstream voltage during surge to safe levels |
| PPPM | 600 W - sustains high-energy transients common in automotive load-dump and inductive switching |
| IFSM | 100 A (10 ms half-sine) - withstands short-duration forward surge events in power rail protection |
| TJ max | +150 °C - supports under-hood automotive environments and industrial ambient conditions |
| MSL Level | Level 1 (260 °C peak) - compatible with standard lead-free reflow without baking |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, cathode indicated by band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connects to protected line; conducts avalanche current to ground during overvoltage |
| Anode | Reference node | Typically connected to system ground or low-impedance return path for clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements |
| Glass passivated junction | Ensures stable VBR tolerance and low parametric drift over lifetime and temperature |
| Low inductance SMB package | Minimizes voltage overshoot during fast transients (<1 ns rise time) due to compact layout and short internal paths |
| 600 W peak pulse power | Handles ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge waveforms without degradation |
| UL 94 V-0 molding compound | Meets flammability safety standards for enclosed automotive and industrial enclosures |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and ESD events in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach IC input pins. Use Value: Maintains signal integrity below 30.6 V clamping level while surviving >1000 surges per AEC-Q101 qualification. |
Use Scenario: Safeguarding 24 V DC power inputs of PLC modules and motor drives against inductive switching spikes from solenoids and relays. IC Role / Device Role / Timing Role: Parallel-connected TVS across input rails to shunt surge current away from upstream regulators and downstream logic. Use Value: 600 W peak power rating absorbs 10/1000 μs transients up to 20 A without failure, preserving system uptime. |
| Consumer Device USB Port Protection | Telecom Line Interface Protection |
|
Use Scenario: Shielding USB 2.0 data lines and VBUS in smart home hubs from ESD and hot-plug transients. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on VBUS line to prevent overvoltage damage to USB controller ICs. Use Value: 18.8 V stand-off allows normal 5 V operation while clamping 8 kV contact ESD to <30.6 V within nanoseconds. |
Use Scenario: Protecting Ethernet PHY interfaces and PoE injectors from lightning-induced surges on twisted-pair cables. IC Role / Device Role / Timing Role: Primary-level TVS on DC bias lines and secondary-side signal paths to limit surge propagation into silicon. Use Value: AEC-Q101 qualification and 150 °C rating ensure long-term stability in outdoor telecom cabinets exposed to wide thermal swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A | Same VBR range (20.9–23.1 V), but lower PPPM = 400 W and higher VC = 33.2 V at 18 A; SMA package (larger footprint) | Limited to lower-energy transients; less suitable for automotive load-dump where 600 W is required | Select SM6T22AHE3_A/H when 600 W clamping capability and AEC-Q101 qualification are mandatory |
| 1.5SMC22A | Higher PPPM = 1500 W, same VBR, but SMC package (larger size, higher inductance); not AEC-Q101 qualified | Better for high-energy industrial surges, but unsuitable for space-constrained or automotive-qualified designs | Choose SM6T22AHE3_A/H for SMB footprint, automotive qualification, and balanced 600 W performance |
Compared with SMAJ22A and 1.5SMC22A, the SM6T22AHE3_A/H uniquely combines AEC-Q101 qualification, 600 W pulse rating, SMB footprint, and 30.6 V clamping in a single RoHS-compliant device-making it optimal for automotive and space-sensitive industrial designs requiring validated reliability.
Availability
SM6T22AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power rail clamping, and consumer USB port protection requiring stable component supply and long-term lifecycle support.
Supply support for SM6T22AHE3_A/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, MOSFETs, and protection devices with emphasis on reliability and application-specific performance.
The SM6T Series was developed for robust, surface-mount transient suppression in automotive, industrial, and consumer systems where AEC-Q101 qualification, low-profile packaging, and repeatable clamping behavior are critical design requirements.
FAQ
What is the polarity configuration of SM6T22AHE3_A/H?
The SM6T22AHE3_A/H is a unidirectional TVS diode, with the cathode identified by a band on the SMB package body. It conducts only when reverse-biased beyond its 20.9–23.1 V breakdown voltage, making it suitable for DC power line and signal line protection where polarity is fixed. This differs from bidirectional variants (e.g., SM6T22CA) used in AC or differential applications.
Does SM6T22AHE3_A/H meet automotive qualification standards?
Yes, SM6T22AHE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation (Document Number 88385). It has passed stress tests including high-temperature reverse bias, temperature cycling, and ESD, making it suitable for under-hood and infotainment applications in passenger vehicles and commercial vehicles.
What is the maximum clamping voltage of SM6T22AHE3_A/H under surge conditions?
The SM6T22AHE3_A/H has a maximum clamping voltage (VC) of 30.6 V at 20 A peak pulse current with a 10/1000 μs waveform. This value is measured per Figure 1 in the datasheet and ensures protected circuits remain below critical voltage thresholds during standardized surge events like ISO 7637-2 Pulse 5a.
Can SM6T22AHE3_A/H be used in lead-free reflow processes?
Yes, SM6T22AHE3_A/H meets J-STD-020 MSL Level 1 with a maximum peak reflow temperature of 260 °C, and its matte tin-plated terminals are solderable per J-STD-002 and JESD 22-B102. No pre-baking is required, supporting standard lead-free assembly without moisture sensitivity concerns.
How does the SMB package of SM6T22AHE3_A/H compare to SMA or SMC alternatives?
The SMB (DO-214AA) package of SM6T22AHE3_A/H offers a 30 % smaller footprint than SMA and 50 % smaller than SMC, while maintaining 600 W pulse capability. Its lower parasitic inductance improves high-speed transient response, and its MSL Level 1 rating simplifies manufacturing-unlike larger packages that may require baking or have higher thermal resistance.
SM6T22AHE3_A/H 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 20A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SM6T22AHE3_A/H FAQ
1.How can I place an order for SM6T22AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM6T22AHE3_A/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 SM6T22AHE3_A/H reliable?
The price and inventory of SM6T22AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM6T22AHE3_A/H is usually 5 days.
3.What payment methods are accepted for SM6T22AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM6T22AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM6T22AHE3_A/H?
SM6T22AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM6T22AHE3_A/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 SM6T22AHE3_A/H?
For technical support, including SM6T22AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM6T22AHE3_A/H requirements.
6.How does Aetrix verify that SM6T22AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All SM6T22AHE3_A/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 SM6T22AHE3_A/H meets industry standards.
7.What is the process for return or replacement of SM6T22AHE3_A/H?
All SM6T22AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SM6T22AHE3_A/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 SM6T22AHE3_A/H part is unused and in its original packaging.
Return procedure for SM6T22AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM6T22AHE3_A/H 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 …
