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Vishay General Semiconductor - Diodes Division 3KASMC16AHE3_B/I
- Part No.:
- 3KASMC16AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC16AHE3_B/I.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,753
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Product details
Overview
3KASMC16AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 16 V stand-off voltage (VWM), 17.8–19.7 V breakdown (VBR), 3000 W peak pulse power (10/1000 μs), 26.0 V clamping voltage at 115 A IPPM, and operation up to TJ = 185 °C. It protects automotive sensor signal lines against inductive switching transients.
For engineers reviewing the 3KASMC16AHE3_B/I datasheet, 3KASMC16AHE3_B/I pinout, 3KASMC16AHE3_B/I application, or 3KASMC16AHE3_B/I equivalent, key selection criteria include unidirectional clamping performance, AEC-Q101 qualification status, 185 °C junction temperature rating, SMC package thermal resistance (RθJL = 18.3 °C/W), and compliance with JESD201 Class 2 whisker testing.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under high-temperature stress. Its 10/1000 μs waveform response delivers 3000 W peak pulse power with low incremental surge resistance and fast response time-critical for protecting MOSFET gates and IC inputs during load dump or ESD events.
The device operates unidirectionally with a cathode-band polarity marker and is qualified to AEC-Q101 for automotive use. Thermal design is supported by RθJA = 77.5 °C/W (typ.) and RθJL = 18.3 °C/W (typ.), enabling reliable performance on standard PCB pad layouts per JEDEC DO-214AB specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - maximum reverse stand-off voltage before clamping begins; defines operating margin for 12 V automotive systems |
| VBR (min/typ/max) | 17.8 / 18.8 / 19.7 V at 1.0 mA - precise breakdown threshold ensures predictable turn-on during overvoltage events |
| VC @ IPPM | 26.0 V at 115 A - clamping voltage limits downstream component stress during 3000 W transient surges |
| PPPM | 3000 W (10/1000 μs) - robust energy absorption capability for automotive load-dump and inductive-switching protection |
| TJ max. | +185 °C - enables deployment in engine bay and powertrain modules without derating |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" body length and matte tin-plated leads |
| AEC-Q101 | Qualified - validated for automotive reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMC (DO-214AB), molded case meeting UL 94 V-0 flammability rating; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or low-side reference in unidirectional TVS configurations |
| Cathode | Current exit terminal during forward conduction; clamping node during reverse transients | Connected to protected line (e.g., sensor output); absorbs surge energy into ground path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift ≤ ±5 % over 1000 hrs at TJ = 150 °C, critical for long-life automotive modules |
| TJ = 185 °C capability | Supports uninterrupted operation in under-hood environments where ambient exceeds 125 °C |
| 3000 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a (load dump) without degradation when properly heatsinked |
| MSL Level 1, LF peak 260 °C | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| JESD201 Class 2 whisker resistance | Prevents tin whisker growth in high-reliability automotive assemblies over 15+ year service life |
Applications
| Automotive Engine Control Unit (ECU) Sensor Protection | Industrial Motor Drive Gate Driver Protection |
|---|---|
Use Scenario: Protects crankshaft/camshaft position sensor signal lines from inductive kickback during solenoid actuation in 12 V vehicle platforms. IC Role / Device Role / Timing Role: Unidirectional TVS clamps transients to ≤26.0 V while maintaining signal integrity for Hall-effect sensor ICs. Use Value: Prevents latch-up or permanent damage to sensor interface circuitry during repeated load-dump events per ISO 16750-2. | Use Scenario: Shields isolated gate driver ICs (e.g., Si823x) from Miller-induced voltage spikes during IGBT switching in HVAC inverters. IC Role / Device Role / Timing Role: Fast-response TVS limits dv/dt-induced overshoot on gate-to-emitter paths during high-speed switching. Use Value: Reduces risk of false triggering or gate oxide breakdown in 600 V IGBT half-bridges operating at 20 kHz. |
| Automotive ADAS Camera Module Power Line Protection | Telecom Base Station DC Power Input Protection |
Use Scenario: Guards 5 V bias rail of CMOS image sensors against ESD and cable discharge events in rear-view camera systems. IC Role / Device Role / Timing Role: Low-capacitance TVS (CJ ≈ 200 pF at 0 V) minimizes signal distortion on analog video lines. Use Value: Maintains <10 ns response time and preserves SNR > 60 dB across 1–10 MHz video bandwidth. | Use Scenario: Safeguards -48 V telecom power input stages against lightning-induced surges in outdoor base station cabinets. IC Role / Device Role / Timing Role: High-energy TVS diverts >10 kA surge current away from upstream DC/DC converters and monitoring ICs. Use Value: Achieves 3000 W dissipation without thermal runaway, verified per IEC 61000-4-5 Level 4 test conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A-E3/5AT (Vishay) | Same VWM/VBR/VC specs but lower PPPM (400 W), SMA package (higher RθJA = 110 °C/W) | Not suitable for automotive load-dump; limited to low-energy ESD protection | Select only for cost-sensitive consumer electronics where 3000 W surge immunity is unnecessary |
| 1.5KE16A (ON Semiconductor) | Through-hole DO-201 package, same VWM/VBR, but lower TJ max. (175 °C), no AEC-Q101 qualification | Requires manual assembly; not approved for automotive production programs | Use only in industrial prototypes or non-automotive legacy designs with existing through-hole layouts |
Compared with SMAJ16A-E3/5AT and 1.5KE16A, the 3KASMC16AHE3_B/I provides superior thermal robustness (185 °C vs. ≤175 °C), automotive qualification, and 7.5× higher surge power handling-making it the sole choice for AEC-Q101-compliant 12 V system protection requiring SMC footprint compatibility.
Availability
3KASMC16AHE3_B/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive development, and telecom infrastructure projects requiring stable component supply, AEC-Q101 validation, and high-temperature reliability.
Supply support for 3KASMC16AHE3_B/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, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade performance.
The 3KASMCxxA family was designed specifically for high-energy transient suppression in harsh-environment automotive and industrial applications, combining AEC-Q101 qualification, 185 °C operation, and 3000 W surge capability in the SMC package.
FAQ
What is the clamping voltage of the 3KASMC16AHE3_B/I at its rated peak pulse current?
The 3KASMC16AHE3_B/I has a maximum clamping voltage (VC) of 26.0 V at 115 A peak pulse current (IPPM), measured under the standard 10/1000 μs waveform. This value ensures protected circuits remain below safe voltage thresholds during high-energy transients. The 3KASMC16AHE3_B/I's low VC supports reliable operation of 3.3 V and 5 V logic interfaces when placed on signal lines near sensitive ICs.
Is the 3KASMC16AHE3_B/I qualified to AEC-Q101, and what does that mean for automotive use?
Yes, the 3KASMC16AHE3_B/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation (Doc. #88480). This qualification validates performance across temperature cycling, high-temperature reverse bias, and ESD testing per automotive reliability standards. The 3KASMC16AHE3_B/I is approved for use in engine control, ADAS, and body electronics modules where failure could impact safety or regulatory compliance.
What is the thermal resistance from junction to leads (RθJL) for the 3KASMC16AHE3_B/I, and why does it matter?
The 3KASMC16AHE3_B/I has a typical junction-to-leads thermal resistance (RθJL) of 18.3 °C/W, per Vishay's datasheet. This low value reflects efficient heat transfer from the silicon die to the PCB copper via the SMC package leads. It directly impacts sustained power handling: when mounted on minimum recommended pads, the 3KASMC16AHE3_B/I can dissipate 6.0 W continuously at TL = 75 °C-critical for thermally constrained automotive modules.
Does the 3KASMC16AHE3_B/I have a unidirectional or bidirectional configuration, and how is polarity identified?
The 3KASMC16AHE3_B/I is unidirectional only, as explicitly stated in the Vishay datasheet. Polarity is identified by a cathode band printed on the device body-this band marks the cathode terminal, which must be connected toward the protected line (e.g., sensor output), while the anode connects to ground. Bidirectional variants are not offered in the 3KASMCxxA series.
What is the maximum junction temperature rating for the 3KASMC16AHE3_B/I, and how does it compare to standard TVS diodes?
The 3KASMC16AHE3_B/I is rated for a maximum junction temperature (TJ max.) of +185 °C, exceeding the 150–175 °C limit of most commercial TVS diodes. This extended rating enables deployment in under-hood automotive locations (e.g., transmission control units) where ambient temperatures exceed 125 °C. The 3KASMC16AHE3_B/I maintains specified VBR and VC performance across its full -65 °C to +185 °C range without derating.
3KASMC16AHE3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 16V
- Voltage - Breakdown (Min):
- 17.8V
- Voltage - Clamping (Max) @ Ipp:
- 26V
- Current - Peak Pulse (10/1000µs):
- 115A
- 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 (SMC)
3KASMC16AHE3_B/I FAQ
1.How can I place an order for 3KASMC16AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC16AHE3_B/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 3KASMC16AHE3_B/I reliable?
The price and inventory of 3KASMC16AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC16AHE3_B/I is usually 5 days.
3.What payment methods are accepted for 3KASMC16AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC16AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC16AHE3_B/I?
3KASMC16AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC16AHE3_B/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 3KASMC16AHE3_B/I?
For technical support, including 3KASMC16AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC16AHE3_B/I requirements.
6.How does Aetrix verify that 3KASMC16AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC16AHE3_B/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 3KASMC16AHE3_B/I meets industry standards.
7.What is the process for return or replacement of 3KASMC16AHE3_B/I?
All 3KASMC16AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC16AHE3_B/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 3KASMC16AHE3_B/I part is unused and in its original packaging.
Return procedure for 3KASMC16AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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