My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 3KASMC15HE3_A/I
- Part No.:
- 3KASMC15HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC15HE3_A/I.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,127
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
3KASMC15HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 15 V stand-off voltage, 16.7–18.5 V breakdown at 1 mA, 3000 W peak pulse power (10/1000 μs), and 185 °C maximum junction temperature - deployed for automotive-grade overvoltage protection of MOSFETs and sensor signal lines.
For engineers reviewing the 3KASMC15HE3_A/I datasheet, 3KASMC15HE3_A/I pinout, 3KASMC15HE3_A/I application, or 3KASMC15HE3_A/I equivalent, key selection criteria include clamping voltage (24.4 V at 123 A), unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, and thermal resistance (RθJA = 77.5 °C/W) under standard PCB mounting.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable clamping performance across -65 °C to +185 °C operating range, with low incremental surge resistance and sub-nanosecond response time to transient events. It is designed for single-polarity suppression of inductive switching spikes and lightning-induced surges on DC power rails and low-voltage signal paths.
The device meets JESD22-B102 solderability and JESD201 Class 2 whisker resistance requirements, features matte tin-plated leads, and is qualified per AEC-Q101 for automotive under-hood and body electronics applications where high-reliability transient immunity is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V automotive systems. |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - Confirmed breakdown threshold ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 24.4 V at 123 A - Clamping voltage limits downstream IC stress during 3000 W surge; critical for protecting 24 V tolerant interfaces. |
| PPPM | 3000 W (10/1000 μs) - Peak pulse power rating validates robustness against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges. |
| TJ max. | +185 °C - Enables operation in high-temperature environments such as engine control units and powertrain modules. |
| AEC-Q101 | Qualified - Confirms reliability validation for automotive electronic components per stress test requirements including HTGB, HTRB, and TCT. |
| RθJA | 77.5 °C/W - Thermal resistance value guides heatsinking decisions and derating calculations for sustained power dissipation. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, unidirectional configuration with cathode indicated by color band. Dimensions: 7.11 mm × 6.22 mm × 2.90 mm (L × W × H); RoHS-compliant, UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point for unidirectional clamping path | Connected to ground or low-impedance return path; completes surge current loop during overvoltage events. |
| Cathode | High-side connection point; marked with color band | Connected to protected line (e.g., 12 V rail or sensor output); conducts surge current toward ground when VREV > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Passivated anisotropic rectifier technology | Enables stable VBR and low leakage (<1 μA at VWM) across full temperature range and lifetime. |
| 10/1000 μs waveform rating | Validates compatibility with industry-standard surge test profiles used in automotive EMC validation (ISO 7637-2). |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow assembly without moisture-induced damage; eliminates pre-bake requirement. |
| Matte tin-plated leads | Ensures reliable solder joint formation per J-STD-002 and JESD22-B102; prevents intermetallic degradation. |
| Junction temperature capability | 185 °C rating allows placement near heat sources (e.g., power MOSFETs) without derating penalties. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and ground to shunt surge energy away from downstream regulators and microcontrollers. Use Value: Limits voltage excursion to ≤24.4 V during 123 A surge, preserving integrity of 3.3 V/5 V logic supplies and CAN transceivers. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across sensor output and ground to absorb ESD and switching noise without distorting mV-level signals. Use Value: Maintains signal fidelity with <1 μA leakage at 15 V, while clamping fast transients before they reach ADC front-end stages. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
Use Scenario: Input-stage surge suppression in wall adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Primary overvoltage guard on AC-DC secondary side, coordinated with fuse and MOV for staged protection. Use Value: Delivers 3000 W pulse handling without degradation, enabling compact design versus multi-stage discrete solutions. |
Use Scenario: DC power feed protection in remote radio head (RRH) base stations exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on +48 V telecom supply rail, absorbing induced common-mode transients before reaching PMICs. Use Value: Withstands repeated 10/1000 μs surges up to 123 A while maintaining VWM stability over 15-year field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Lower PPPM (400 W), same DO-214AC (SMA) package, VC = 24.4 V at 17.3 A | Not AEC-Q101 qualified; limited to consumer/industrial use; lower surge current handling | Select when cost sensitivity outweighs automotive qualification and 3000 W surge requirement. |
| SMCJ15A | Same DO-214AB (SMC) package, identical VWM/VBR, but VC = 24.4 V at 123 A and AEC-Q101 qualified | Functionally identical clamping behavior; differs only in marking code and packaging suffix (HM3 vs HM3_A/I) | Valid alternative if 3KASMC15HE3_A/I is unavailable; verify reel code compatibility with SMT line setup. |
Compared with SMAJ15A and SMCJ15A, the 3KASMC15HE3_A/I offers identical clamping performance and AEC-Q101 qualification as SMCJ15A but with traceable Vishay HM3_A/I tape-and-reel delivery, whereas SMAJ15A lacks automotive qualification and cannot support safety-critical vehicle systems.
Availability
3KASMC15HE3_A/I is available at Aetrix Electronics and suitable for automotive power management, industrial sensor interface, and telecom DC feeder applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 compliance.
Supply support for 3KASMC15HE3_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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, thermal performance, and automotive-grade qualification.
The 3KASMC series belongs to Vishay's PAR® (Protective Avalanche Rated) transient suppressor family, engineered specifically for high-temperature, high-surge environments in automotive and industrial power systems.
FAQ
What is the clamping voltage of the 3KASMC15HE3_A/I under peak surge conditions?
The 3KASMC15HE3_A/I has a maximum clamping voltage (VC) of 24.4 V at 123 A peak pulse current using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 standards and ensures downstream circuitry remains within safe voltage limits during surge events. The 3KASMC15HE3_A/I maintains this clamping performance across its full operating temperature range.
Is the 3KASMC15HE3_A/I qualified for automotive applications?
Yes, the 3KASMC15HE3_A/I is AEC-Q101 qualified, confirming it has passed rigorous stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing. This qualification makes the 3KASMC15HE3_A/I suitable for use in automotive powertrain, body electronics, and ADAS modules where reliability under extreme thermal and electrical stress is required.
What package type does the 3KASMC15HE3_A/I use, and what are its key mechanical features?
The 3KASMC15HE3_A/I uses the DO-214AB (SMC) surface-mount package, measuring 7.11 mm × 6.22 mm × 2.90 mm. It features matte tin-plated leads compliant with J-STD-002 and JESD22-B102, UL 94 V-0 flammability-rated epoxy, and a cathode identification band. The package supports MSL Level 1 handling and lead-free reflow up to 260 °C peak temperature.
How does the 3KASMC15HE3_A/I differ from standard SMAJ or SMCJ series TVS diodes?
The 3KASMC15HE3_A/I belongs to Vishay's PAR® family and shares electrical specs with SMCJ15A but carries the HM3_A/I tape-and-reel packaging variant optimized for automated assembly. Unlike SMAJ15A, it is AEC-Q101 qualified and rated for 185 °C junction temperature. The 3KASMC15HE3_A/I also features enhanced passivation for improved long-term stability in harsh environments.
What is the maximum reverse leakage current of the 3KASMC15HE3_A/I at its stand-off voltage?
At VWM = 15 V and TA = 25 °C, the 3KASMC15HE3_A/I exhibits a maximum reverse leakage current (IR) of 1.0 μA. At elevated temperature (TJ = 150 °C), leakage increases to 10 μA - a controlled, specified value that preserves signal integrity in high-impedance sensor and communication circuits without compromising protection function.
3KASMC15HE3_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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 112A
- 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)
3KASMC15HE3_A/I FAQ
1.How can I place an order for 3KASMC15HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC15HE3_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 3KASMC15HE3_A/I reliable?
The price and inventory of 3KASMC15HE3_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 3KASMC15HE3_A/I is usually 5 days.
3.What payment methods are accepted for 3KASMC15HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC15HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC15HE3_A/I?
3KASMC15HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC15HE3_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 3KASMC15HE3_A/I?
For technical support, including 3KASMC15HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC15HE3_A/I requirements.
6.How does Aetrix verify that 3KASMC15HE3_A/I is sourced from the original manufacturer or authorized distributors?
All 3KASMC15HE3_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 3KASMC15HE3_A/I meets industry standards.
7.What is the process for return or replacement of 3KASMC15HE3_A/I?
All 3KASMC15HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC15HE3_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 3KASMC15HE3_A/I part is unused and in its original packaging.
Return procedure for 3KASMC15HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC15HE3_A/I 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 …
