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Vishay General Semiconductor - Diodes Division 3KASMC22AHE3_A/I
- Part No.:
- 3KASMC22AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC22AHE3_A/I.pdf
- Description:
- TVS DIODE 22VWM 35.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,087
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Product details
Overview
3KASMC22AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for high-energy surge clamping in automotive and industrial power rails. It delivers 3000 W peak pulse power (10/1000 μs), clamps at 35.5 V under 84.5 A surge current, and operates up to 185 °C junction temperature - enabling robust protection of MOSFETs and ICs against inductive switching transients.
For engineers reviewing the 3KASMC22AHE3_A/I datasheet, 3KASMC22AHE3_A/I pinout, 3KASMC22AHE3_A/I application, or 3KASMC22AHE3_A/I equivalent, key selection criteria include its DO-214AB (SMC) package, 22 V stand-off voltage, AEC-Q101 qualification, 1.0 mA breakdown test current, and 1.0 μA reverse leakage at VWM.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional polarity and 24.4–26.9 V breakdown range (VBR) ensure precise clamping behavior during fast-rising transients induced by inductive load switching.
Rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), it maintains thermal reliability with RθJA = 77.5 °C/W and RθJL = 18.3 °C/W, and meets J-STD-020 MSL Level 1 with 260 °C lead-free reflow compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 22 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 24.4 V / 26.9 V - breakdown occurs within this range at 1.0 mA test current |
| VC @ IPPM | 35.5 V - clamping voltage at 84.5 A peak pulse current, limiting downstream voltage stress |
| PPPM | 3000 W - peak pulse power handling capability per 10/1000 μs waveform |
| TJ max. | 185 °C - enables operation in under-hood automotive and high-ambient industrial environments |
| IR @ VWM | 1.0 μA - ultra-low leakage preserves signal integrity and battery life in always-on circuits |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, RoHS-compliant, UL 94 V-0 molding compound. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; connected to protected circuit ground or low-side rail | Enables unidirectional clamping from cathode to anode during positive transients on cathode side |
| Cathode | Current exit point in forward bias; connected to protected line (e.g., 24 V rail, signal line) | Clamps voltage to ≤35.5 V when transient exceeds 24.4 V, diverting surge current to ground via anode |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR and low leakage over 185 °C lifetime |
| Peak pulse power | 3000 W (10/1000 μs) supports IEC 61000-4-5 Level 4 surge immunity compliance |
| Response time | <1.0 ps - clamps transients before sensitive downstream components experience overstress |
| Thermal robustness | RθJL = 18.3 °C/W enables direct PCB copper pour heatsinking without external thermal vias |
| Manufacturing compliance | MSL Level 1, J-STD-002 solderability, JESD22-B102 whisker resistance (HM3 suffix) |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC input stage. Use Value: Withstands 3000 W surges and operates reliably at 185 °C, meeting ISO 7637-2 and AEC-Q101 requirements. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers against field-wiring transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V sensor interface lines upstream of optocouplers or level shifters. Use Value: 1.0 μA leakage prevents false triggering; 35.5 V clamping protects 3.3 V/5 V logic interfaces via series impedance. |
| Motor Drive Gate Driver Protection | Telecom DC Power Interface |
Use Scenario: Clamping gate-source voltage spikes on high-side N-channel MOSFETs in BLDC motor inverters. IC Role / Device Role / Timing Role: TVS placed across gate and source terminals to limit dv/dt-induced Miller turn-on. Use Value: Sub-nanosecond response and low CJ (typ. 120 pF at 0 V) minimize interference with PWM timing integrity. |
Use Scenario: Surge suppression on -48 V telecom power feeds entering base station equipment. IC Role / Device Role / Timing Role: Unidirectional TVS on primary DC input before bulk capacitance and DC-DC converters. Use Value: 22 V VWM allows normal operation during brownout; 35.5 V VC prevents overvoltage damage to downstream silicon. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/5AT (Vishay) | Lower PPPM = 400 W; DO-214AC (SMA) package; same VWM/VBR range but reduced surge margin | Suitable for consumer-grade or lower-energy industrial interfaces where 3000 W is not required | Select 3KASMC22AHE3_A/I when full IEC 61000-4-5 Level 4 compliance or automotive load dump protection is mandatory |
| 1.5KE22A (ON Semiconductor) | Through-hole DO-201 package; higher VC = 33.2 V at 45.5 A; 1500 W rating; no AEC-Q101 qualification | Limited to non-automotive, non-high-reliability board-level designs with manual assembly | Choose 3KASMC22AHE3_A/I for SMT production, high-temp environments, or AEC-Q101–mandated programs |
Compared with SMAJ22A-E3/5AT and 1.5KE22A, the 3KASMC22AHE3_A/I provides triple the peak pulse power in a surface-mount package with automotive-grade qualification and extended thermal capability - critical for under-hood and industrial control applications demanding long-term reliability.
Availability
3KASMC22AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, motor drive inverters, and telecom power interfaces requiring stable component supply and AEC-Q101–validated performance.
Supply support for 3KASMC22AHE3_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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 3KASMCxxA family was engineered specifically for high-energy transient suppression in harsh-environment applications, emphasizing AEC-Q101 qualification, 185 °C operation, and DO-214AB mechanical robustness.
FAQ
What is the clamping voltage of the 3KASMC22AHE3_A/I at its rated peak pulse current?
The 3KASMC22AHE3_A/I clamps to a maximum of 35.5 V when subjected to its specified peak pulse current of 84.5 A (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream 24 V system components. The 3KASMC22AHE3_A/I achieves this with low incremental surge resistance and fast response, making it suitable for protecting sensitive gate drivers and power ICs.
Is the 3KASMC22AHE3_A/I qualified for automotive applications?
Yes, the 3KASMC22AHE3_A/I is AEC-Q101 qualified and rated for operation up to 185 °C junction temperature - meeting requirements for under-hood automotive modules including engine control units and body electronics. Its DO-214AB package, MSL Level 1 rating, and 260 °C lead-free reflow compatibility further support automotive manufacturing standards. The 3KASMC22AHE3_A/I is explicitly listed in Vishay's AEC-Q101 qualified product documentation.
What does the "_A/I" suffix mean in 3KASMC22AHE3_A/I?
The "_A/I" suffix in 3KASMC22AHE3_A/I indicates a specific packaging configuration: "A" denotes the HM3 base variant (RoHS-compliant and AEC-Q101 qualified), and "I" specifies 13-inch diameter plastic tape and reel delivery with a base quantity of 3500 units. This matches Vishay's official ordering code structure shown in Document Number 89962, Section "ORDERING INFORMATION".
How does the 3KASMC22AHE3_A/I compare to standard SMAJ-series TVS diodes?
The 3KASMC22AHE3_A/I delivers 3000 W peak pulse power - 7.5× higher than the 400 W rating of the SMAJ22A - while sharing the same 22 V stand-off voltage. It uses the larger DO-214AB (SMC) package for superior thermal dissipation and is qualified to AEC-Q101, unlike most SMAJ variants. The 3KASMC22AHE3_A/I is intended for high-stress applications where sustained surge energy and automotive reliability are mandatory.
What is the reverse leakage current specification for the 3KASMC22AHE3_A/I at 25 °C?
The 3KASMC22AHE3_A/I exhibits a maximum reverse leakage current (IR) of 1.0 μA at its 22 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage minimizes standby power loss and avoids false triggering in high-impedance sensor or logic interfaces. The 3KASMC22AHE3_A/I maintains this specification across its full operating temperature range, supporting battery-powered and always-on systems.
3KASMC22AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 24.4V
- Voltage - Clamping (Max) @ Ipp:
- 35.5V
- Current - Peak Pulse (10/1000µs):
- 84.5A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
3KASMC22AHE3_A/I FAQ
1.How can I place an order for 3KASMC22AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC22AHE3_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 3KASMC22AHE3_A/I reliable?
The price and inventory of 3KASMC22AHE3_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 3KASMC22AHE3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC22AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC22AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC22AHE3_A/I?
3KASMC22AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC22AHE3_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 3KASMC22AHE3_A/I?
For technical support, including 3KASMC22AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC22AHE3_A/I requirements.
6.How does Aetrix verify that 3KASMC22AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC22AHE3_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 3KASMC22AHE3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC22AHE3_A/I?
All 3KASMC22AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC22AHE3_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 3KASMC22AHE3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC22AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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