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Vishay General Semiconductor - Diodes Division 3KASMC13AHE3/57T
- Part No.:
- 3KASMC13AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC13AHE3/57T.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,360
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Product details
Overview
3KASMC13AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AB (SMC) package, rated for 13 V stand-off voltage (VWM), 14.4–15.9 V breakdown voltage (VBR), 3000 W peak pulse power (10/1000 μs), 140 A peak pulse current (IPPM), and 21.5 V clamping voltage (VC) - designed for automotive-grade overvoltage protection of power rails and signal lines in engine control units and ADAS sensor interfaces.
For engineers reviewing the 3KASMC13AHE3/57T datasheet, 3KASMC13AHE3/57T pinout, 3KASMC13AHE3/57T application, or 3KASMC13AHE3/57T equivalent, key selection criteria include its AEC-Q101 qualification, TJ = 185 °C maximum junction temperature, MSL Level 1 rating, 18.3 °C/W junction-to-lead thermal resistance, and uni-directional polarity with cathode band marking - critical for high-reliability automotive and industrial power rail protection.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable clamping performance under repetitive surge stress and elevated ambient temperatures. Its 10/1000 μs waveform response supports IEC 61000-4-5 compliance for surge immunity testing in automotive electronics.
The device operates exclusively in uni-directional mode with a defined cathode terminal, enabling integration into DC-biased circuits where reverse conduction must be blocked until clamping threshold is exceeded. Thermal design leverages low RθJL (18.3 °C/W) for efficient heat transfer to PCB copper, supporting sustained operation at TJ up to 185 °C without derating on standard pad layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping onset. |
| VBR (Breakdown Voltage) | 14.4–15.9 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| PPPM (Peak Pulse Power) | 3000 W (10/1000 μs) - Sustains high-energy surges typical of ISO 7637-2 Load Dump and inductive switching events. |
| VC (Clamping Voltage) | 21.5 V at IPPM = 140 A - Limits downstream voltage stress to protect 24 V-rated ICs and MOSFETs. |
| TJ max | 185 °C - Enables use in under-hood automotive environments without thermal derating penalties. |
| RθJL | 18.3 °C/W - Supports direct thermal coupling to PCB traces or heatsink pads for reliable long-term surge handling. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronic systems per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, RoHS-compliant, MSL Level 1 (260 °C peak reflow), cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to system ground or low-side reference; completes clamping loop during transient events. |
| Cathode | Reverse-biased input / Clamping node | Connected to protected line (e.g., 12 V rail); conducts when Vin exceeds VBR, shunting surge energy to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure ensures stable VBR and low leakage (<2 μA at VWM) across 150 °C junction temperature. |
| High-temperature capability | TJ = 185 °C maximum enables deployment in engine bay, transmission control, and battery management modules without thermal throttling. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, relay bounce), improving protection fidelity for sensitive analog inputs. |
| MSL Level 1 rating | Allows standard SMT reflow profiles (peak 260 °C) without preconditioning, reducing manufacturing complexity and cost. |
| Uni-directional polarity only | Prevents unintended conduction in DC-biased applications such as automotive power supplies and CAN bus termination networks. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Power Input |
|---|---|
Use Scenario: Protection of 12 V supply rail against load dump transients (ISO 7637-2 Pulse 5a) and alternator ripple in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of LDO regulators and microcontroller power pins. Use Value: Limits rail voltage to ≤21.5 V during 3000 W surges, preventing latch-up or permanent damage to 24 V-tolerant MCUs and drivers. |
Use Scenario: Guarding 24 V DC input of programmable logic controllers against inductive kickback from solenoid valves and contactors. IC Role / Device Role / Timing Role: Fast-response transient suppressor integrated into front-end filter stage before bulk capacitance and DC-DC converter. Use Value: Clamps 140 A surge peaks within nanoseconds, maintaining downstream voltage integrity and avoiding brownout resets during field-device switching. |
| ADAS Camera Sensor Interface | Telecom PoE Midspan Injector |
Use Scenario: Safeguarding FPD-Link III or GMSL serial video interface lines from ESD and cable discharge events in rear-view and surround-view cameras. IC Role / Device Role / Timing Role: Uni-directional TVS placed on each differential pair (clock/data) near connector, referenced to local ground plane. Use Value: Low capacitance (typ. <50 pF at 0 V) preserves signal integrity at >3 Gbps while clamping ±15 kV HBM ESD to <25 V. |
Use Scenario: Protecting 48 V DC output of IEEE 802.3at midspan PoE injectors from lightning-induced surges on Ethernet cabling. IC Role / Device Role / Timing Role: Secondary-level surge suppression on PSE output side, coordinated with primary gas discharge tube (GDT) stage. Use Value: 3000 W rating handles residual energy after GDT crowbarring, ensuring end-device safety without compromising PoE negotiation timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ13A | Lower PPPM (400 W), higher VC (21.5 V same), same VWM/VBR, DO-214AC (SMA) package (smaller footprint, higher RθJA). | Not AEC-Q101 qualified; limited to commercial/industrial use; unsuitable for under-hood automotive. | Select SMAJ13A only for cost-sensitive non-automotive designs with lower surge exposure and space-constrained layouts. |
| 1.5KE13A | Higher PPPM (1500 W), larger DO-201AD package, higher RθJA (50 °C/W), no AEC-Q101 qualification, leaded through-hole mounting. | Requires wave soldering or hand assembly; incompatible with automated SMT lines; not rated for 185 °C operation. | Choose 1.5KE13A only for legacy through-hole designs or prototyping where reflow compatibility and high-temp reliability are not required. |
Compared with SMAJ13A and 1.5KE13A, the 3KASMC13AHE3/57T delivers 7.5× higher peak power handling, automotive-grade reliability via AEC-Q101, and superior thermal performance in SMT production - making it the sole choice for volume automotive and harsh-environment industrial applications requiring zero field failures.
Availability
3KASMC13AHE3/57T is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC power inputs, ADAS camera sensor interfaces, and telecom PoE midspan injectors requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for 3KASMC13AHE3/57T 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 3KASMC series belongs to Vishay's PAR® (Protection Against Real-world transients) family, engineered specifically for AEC-Q101-compliant transient suppression in high-temperature, high-surge automotive subsystems and mission-critical industrial controls.
FAQ
What is the clamping voltage of the 3KASMC13AHE3/57T at its rated peak pulse current?
The 3KASMC13AHE3/57T has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated peak pulse current (IPPM) of 140 A under a 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees that downstream components see no more than 21.5 V during worst-case surge events, protecting 24 V-rated ICs and gate drivers connected to the same rail.
Is the 3KASMC13AHE3/57T qualified for automotive applications?
Yes, the 3KASMC13AHE3/57T is AEC-Q101 qualified and rated for operation up to TJ = 185 °C, making it suitable for under-hood automotive applications including engine control units, body control modules, and ADAS sensor power supplies. Its qualification covers HTGB, HTRB, and temperature cycling tests per the AEC-Q101 standard.
What package type does the 3KASMC13AHE3/57T use, and what are its key mechanical features?
The 3KASMC13AHE3/57T uses the DO-214AB (SMC) surface-mount package with matte tin-plated leads, UL 94 V-0 molding compound, and cathode identification via a color band. It meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C - enabling compatibility with standard lead-free SMT assembly processes.
How does the 3KASMC13AHE3/57T differ from generic 13 V TVS diodes like SMAJ13A?
The 3KASMC13AHE3/57T differs from SMAJ13A in three key ways: it delivers 3000 W peak pulse power (vs. 400 W), is AEC-Q101 qualified (SMAJ13A is not), and features a lower thermal resistance (RθJL = 18.3 °C/W vs. ~50 °C/W for SMAJ). These differences make the 3KASMC13AHE3/57T appropriate for high-stress automotive and industrial surge environments where reliability and thermal performance are critical.
What is the maximum reverse leakage current of the 3KASMC13AHE3/57T at its stand-off voltage?
The 3KASMC13AHE3/57T exhibits a maximum reverse leakage current (IR) of 2.0 μA at its 13 V stand-off voltage (VWM) and 25 °C ambient temperature. At elevated junction temperature (TJ = 150 °C), leakage remains ≤20 μA - confirming stable blocking behavior across its full operational range and minimizing standby power loss in always-on automotive modules.
3KASMC13AHE3/57T 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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 140A
- 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)
3KASMC13AHE3/57T FAQ
1.How can I place an order for 3KASMC13AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC13AHE3/57T 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 3KASMC13AHE3/57T reliable?
The price and inventory of 3KASMC13AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC13AHE3/57T is usually 5 days.
3.What payment methods are accepted for 3KASMC13AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC13AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC13AHE3/57T?
3KASMC13AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC13AHE3/57T 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 3KASMC13AHE3/57T?
For technical support, including 3KASMC13AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC13AHE3/57T requirements.
6.How does Aetrix verify that 3KASMC13AHE3/57T is sourced from the original manufacturer or authorized distributors?
All 3KASMC13AHE3/57T 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 3KASMC13AHE3/57T meets industry standards.
7.What is the process for return or replacement of 3KASMC13AHE3/57T?
All 3KASMC13AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC13AHE3/57T, 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 3KASMC13AHE3/57T part is unused and in its original packaging.
Return procedure for 3KASMC13AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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