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Vishay General Semiconductor - Diodes Division 3KASMC16AHE3/57T
- Part No.:
- 3KASMC16AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC16AHE3/57T.pdf
- Description:
- TVS DIODE 16VWM 26VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,897
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Product details
Overview
3KASMC16AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) diode designed for high-energy surge clamping in automotive and industrial power rails. It delivers 3000 W peak pulse power (10/1000 μs), clamps at 26.0 V under 115 A surge current, and operates up to 185 °C junction temperature - enabling robust protection of 16 V nominal DC systems such as automotive ECUs and motor control circuits.
For engineers reviewing the 3KASMC16AHE3/57T datasheet, 3KASMC16AHE3/57T pinout, 3KASMC16AHE3/57T application, or 3KASMC16AHE3/57T equivalent, key selection criteria include its DO-214AB (SMC) package compatibility, AEC-Q101 qualification, 16 V stand-off voltage, 17.8–19.7 V breakdown range, and low 1.0 μA leakage at rated VWM - critical for low-power sensor interfaces and battery-backed systems.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and fast transient response. Its unidirectional polarity and 185 °C maximum junction temperature support operation in under-hood automotive environments and industrial motor drives where thermal derating is essential.
The device meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow capability and passes JESD201 Class 2 whisker testing. Its 77.5 °C/W junction-to-ambient thermal resistance and 18.3 °C/W junction-to-lead resistance define its thermal performance on standard PCB pad layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 16 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 16 V nominal supply rails. |
| VBR (min/max) | 17.8 V / 19.7 V at 1.0 mA - Confirmed breakdown threshold ensures reliable turn-on during overvoltage events without premature conduction. |
| PPPM | 3000 W (10/1000 μs) - Sustains high-energy transients like ISO 7637-2 Pulse 5a without failure, protecting downstream MOSFETs and ICs. |
| IPPM | 115 A - Peak surge current capability directly supports IEC 61000-4-5 Level 4 (4 kV) surge immunity compliance in power inputs. |
| VC | 26.0 V at IPPM - Clamping voltage limits stress on protected devices; 26.0 V ensures safe margin below 28 V-rated components. |
| TJ max. | +185 °C - Enables use in high-ambient environments (e.g., engine control units) without thermal shutdown or parameter drift. |
| Leakage (IR) | 1.0 μA at VWM - Ultra-low leakage preserves battery life in always-on automotive modules and low-power sensor nodes. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by molded band. RoHS-compliant, matte tin-plated leads, MSL Level 1, 260 °C reflow capable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; connected to system ground or low-side reference. | Provides low-impedance path to ground during transient clamping; must be routed with minimal inductance to avoid voltage overshoot. |
| Cathode | Current exit point during reverse-biased clamping; connected to protected line (e.g., 16 V rail). | Acts as the protected node interface; color band identifies this terminal for correct PCB orientation and polarity-sensitive placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD - required for ECU, ADAS, and body electronics. |
| Junction passivation | Stable electrical parameters over lifetime and temperature; prevents parametric shift in harsh under-hood conditions. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., load dump), improving protection fidelity. |
| MSL Level 1 rating | Enables standard SMT assembly without moisture sensitivity concerns - no baking required prior to reflow. |
| 185 °C TJ capability | Supports extended operation in high-ambient zones (e.g., near power inverters) without derating or thermal shutdown. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting 12–16 V battery-fed ECUs against ISO 7637-2 load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between power rail and chassis ground to clamp transients within 1 ns. Use Value: 26.0 V clamping voltage ensures protected microcontrollers and CAN transceivers remain below absolute maximum ratings during 120 V/50 ms load dump events. |
Use Scenario: Safeguarding gate drivers and current-sense amplifiers in 3-phase inverter power stages. IC Role / Device Role / Timing Role: Primary surge suppressor on DC bus input, absorbing switching-induced dv/dt spikes and regenerative energy transients. Use Value: 3000 W peak power rating handles repetitive 10/1000 μs surges from IGBT commutation without degradation over >100,000 cycles. |
| Telecom Power Interface | Consumer Appliance Control Board |
Use Scenario: Input-stage protection for PoE-powered network switches and base station power supplies. IC Role / Device Role / Timing Role: First-line defense against lightning-induced surges on 48 V DC input lines per IEC 61000-4-5. Use Value: 115 A peak surge current capacity meets Level 4 (4 kV) surge test requirements while maintaining <1 μA leakage for standby efficiency. |
Use Scenario: Overvoltage suppression on microcontroller supply rails in smart home appliances exposed to mains-coupled noise. IC Role / Device Role / Timing Role: Low-leakage TVS on 5 V/3.3 V regulator outputs to prevent latch-up during ESD events on front-panel buttons. Use Value: 1.0 μA leakage at 16 V stand-off enables <100 nA total system standby current - critical for Energy Star certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ16A | Lower peak power (400 W), smaller SMA package (DO-214AC), 27.7 V clamping at 12.3 A. | Not AEC-Q101 qualified; limited to consumer/industrial use; insufficient for automotive load dump. | Select when cost and board space are prioritized over automotive qualification and high-energy surge handling. |
| SMCJ16A | Same DO-214AB package, 1500 W rating (half of 3KASMC16AHE3/57T), 25.0 V clamping at 60 A. | Lacks 185 °C TJ rating and AEC-Q101 validation; suitable for non-automotive industrial use only. | Choose if 1500 W surge capacity suffices and full 3000 W headroom is unnecessary - reduces BOM cost without changing layout. |
Compared with SMAJ16A and SMCJ16A, the 3KASMC16AHE3/57T provides double the peak power, AEC-Q101 assurance, and +185 °C operation - making it the only option qualified for under-hood automotive deployment where thermal and surge margins are non-negotiable.
Availability
3KASMC16AHE3/57T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drive inputs, and telecom power interface designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for 3KASMC16AHE3/57T 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 optoelectronics for automotive, industrial, and computing markets.
The 3KASMC16AHE3/57T belongs to Vishay's PAR® TVS family, engineered specifically for high-temperature, high-surge environments - targeting automotive power distribution, industrial automation, and mission-critical power conversion systems.
FAQ
What is the clamping voltage of the 3KASMC16AHE3/57T and how does it protect downstream components?
The 3KASMC16AHE3/57T clamps at 26.0 V when subjected to its rated 115 A peak pulse current (10/1000 μs). This clamping voltage establishes a hard upper limit on transient voltage seen by protected ICs and MOSFETs. For example, in a 16 V automotive system, the 26.0 V clamping ensures that sensitive 28 V-rated microcontrollers or CAN transceivers remain within their absolute maximum ratings during load dump events - preventing latch-up, gate oxide rupture, or permanent damage. The 3KASMC16AHE3/57T achieves this with low incremental surge resistance and sub-nanosecond response time.
Is the 3KASMC16AHE3/57T qualified for automotive applications?
Yes, the 3KASMC16AHE3/57T is AEC-Q101 qualified and explicitly designed for automotive use. It meets rigorous stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (uHAST). Its 185 °C maximum junction temperature rating and DO-214AB (SMC) package with matte tin plating support under-hood deployment in engine control units, body controllers, and ADAS modules. The 3KASMC16AHE3/57T data sheet confirms AEC-Q101 qualification in both the FEATURES and MECHANICAL DATA sections.
What does the 'HE3/57T' suffix indicate in the 3KASMC16AHE3/57T part number?
The 'HE3/57T' suffix denotes the packaging and compliance configuration: 'HE3' indicates the base P/NHM3 variant - RoHS-compliant and AEC-Q101 qualified - while '/57T' specifies the preferred packaging format: 7-inch diameter plastic tape and reel, with a base quantity of 850 units. This matches Vishay's official ordering information table, where '3KASMC16AHM3/57T' is listed as the preferred P/N. The 3KASMC16AHE3/57T uses the same HM3 construction and 57T reel format, ensuring consistent manufacturability and compliance.
How does the thermal performance of the 3KASMC16AHE3/57T compare to standard TVS diodes?
The 3KASMC16AHE3/57T features a typical junction-to-ambient thermal resistance (RθJA) of 77.5 °C/W and junction-to-lead resistance (RθJL) of 18.3 °C/W - significantly lower than many standard SMA-packaged TVS diodes (often >150 °C/W RθJA). This enables higher sustained power dissipation and better transient energy absorption without thermal runaway. When mounted on Vishay's recommended minimum pad layout, the 3KASMC16AHE3/57T maintains stable clamping performance even at ambient temperatures up to +125 °C - a key advantage for engine bay and industrial power module applications.
Can the 3KASMC16AHE3/57T replace older-generation TVS diodes like P6KE16A in existing designs?
The 3KASMC16AHE3/57T is not a direct drop-in replacement for through-hole P6KE16A due to its surface-mount DO-214AB (SMC) package versus P6KE16A's DO-15 axial package. However, it offers superior performance: 3000 W vs. 600 W peak power, 185 °C vs. 175 °C max junction temperature, and AEC-Q101 qualification. To migrate, PCB layout must be updated for SMC footprint and thermal pads. The 3KASMC16AHE3/57T provides higher reliability and surge margin - especially valuable in new automotive or industrial designs where legacy P6KE16A would require parallel devices or heatsinking.
3KASMC16AHE3/57T 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):
- 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 (SMCJ)
3KASMC16AHE3/57T FAQ
1.How can I place an order for 3KASMC16AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC16AHE3/57T 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 3KASMC16AHE3/57T reliable?
The price and inventory of 3KASMC16AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC16AHE3/57T is usually 5 days.
3.What payment methods are accepted for 3KASMC16AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC16AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC16AHE3/57T?
3KASMC16AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC16AHE3/57T 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 3KASMC16AHE3/57T?
For technical support, including 3KASMC16AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC16AHE3/57T requirements.
6.How does Aetrix verify that 3KASMC16AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 3KASMC16AHE3/57T 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 3KASMC16AHE3/57T meets industry standards.
7.What is the process for return or replacement of 3KASMC16AHE3/57T?
All 3KASMC16AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC16AHE3/57T, 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 3KASMC16AHE3/57T part is unused and in its original packaging.
Return procedure for 3KASMC16AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC16AHE3/57T Tags
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