My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 3KASMC14AHE3_A/H
- Part No.:
- 3KASMC14AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC14AHE3_A/H.pdf
- Description:
- TVS DIODE 14VWM 23.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,926
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
3KASMC14AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) diode in DO-214AB (SMC) package, rated for 14 V stand-off voltage, 15.6–17.2 V breakdown at 1 mA, 3000 W peak pulse power (10/1000 µs), 129 A peak surge current, and 23.2 V clamping voltage at IPPM - used to protect automotive sensor signal lines and MOSFET gate drivers against inductive switching transients.
For engineers reviewing the 3KASMC14AHE3_A/H datasheet, 3KASMC14AHE3_A/H pinout, 3KASMC14AHE3_A/H application, or 3KASMC14AHE3_A/H equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 77.5 °C/W), junction temperature limit (TJ = 185 °C), and DO-214AB mechanical dimensions - all critical for high-reliability automotive and industrial transient suppression design.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its unidirectional polarity enables forward-biased clamping during positive transients while blocking reverse leakage below 1 µA at 14 V.
Designed for AEC-Q101 qualification, it supports operation from –65 °C to +185 °C junction temperature and meets MSL Level 1 with 260 °C lead-free reflow compatibility. The device delivers 3000 W peak pulse power under standardized 10/1000 µs waveform conditions with sub-nanosecond response time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before clamping begins; sets system-level overvoltage threshold for 12 V automotive rails. |
| VBR (min/max) | 15.6 V / 17.2 V at IT = 1 mA - tight breakdown tolerance ensures predictable turn-on behavior across production lots. |
| PPPM | 3000 W (10/1000 µs) - sustains high-energy transients common in automotive load-dump and inductive kick scenarios. |
| IPPM | 129 A - peak surge current capability directly determines clamping margin against ISO 7637-2 Pulse 1/2a/5a waveforms. |
| VC | 23.2 V at IPPM - clamping voltage defines maximum stress imposed on protected downstream ICs during surge events. |
| TJ max. | +185 °C - enables reliable operation in under-hood automotive environments without derating penalties. |
| RθJA | 77.5 °C/W - thermal resistance value informs PCB pad layout and heatsinking requirements for sustained power dissipation. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, matte tin-plated leads, cathode indicated by color band. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected circuit; conducts during positive transients when cathode is biased above anode. |
| Cathode | Clamping reference terminal | Marked by color band; connected to higher-potential rail (e.g., 12 V supply); defines clamping voltage relative to ground-referenced anode. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards. |
| Junction passivation | Optimized anisotropic rectifier structure reduces leakage drift and improves long-term stability at elevated temperatures. |
| MSL Level 1 | Compatible with standard lead-free reflow profiles up to 260 °C peak, eliminating moisture sensitivity handling requirements. |
| Low clamping ratio (VC/VBR) | 1.47 (23.2 V / 15.6 V) - indicates efficient energy diversion with minimal overvoltage overshoot during surge events. |
| Uni-directional polarity | Enables precise clamping only on positive transients, avoiding unintended conduction during negative signal excursions. |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control units exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between sensor output and microcontroller ADC input to clamp transients before they reach sensitive analog front-end. Use Value: Limits voltage excursion to ≤23.2 V during 129 A surges, preserving ADC accuracy and preventing latch-up in 3.3 V or 5 V interface ICs. |
Use Scenario: Shielding high-side and low-side MOSFET gate drivers in BLDC motor inverters from cross-talk and shoot-through induced spikes. IC Role / Device Role / Timing Role: TVS placed across gate-source terminals to suppress dv/dt-induced false triggering and gate oxide overstress. Use Value: Clamps gate voltage spikes within 1 ns, maintaining safe VGS margins below ±20 V rating while supporting 185 °C junction operation near heatsinks. |
| Telecom Power Supply Input Protection | Computer Peripheral USB Port Surge Suppression |
Use Scenario: Safeguarding primary-side DC-DC converter inputs in telecom base station power modules subjected to lightning-induced surges on 48 V backplane rails. IC Role / Device Role / Timing Role: Front-end TVS on 48 V input bus to absorb high-energy transients before upstream EMI filters and controller ICs. Use Value: Handles 3000 W pulses without degradation, enabling compliance with IEC 61000-4-5 Level 4 (4 kV line-earth) test requirements. |
Use Scenario: Adding robustness to USB 2.0 data lines and VBUS in docking stations where hot-plug events generate ESD and cable discharge transients. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; this unidirectional part used on VBUS only to clamp overvoltage from faulty chargers or power-sharing conflicts. Use Value: Provides 14 V stand-off with <1 µA leakage at room temperature, ensuring no impact on USB enumeration while clamping to 23.2 V during 129 A surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A | Same DO-214AC (SMA) package, 14 V VWM, but lower PPPM = 400 W and IPPM = 23.5 A; RθJA = 110 °C/W. | Not suitable for automotive load-dump or industrial motor drive surge levels; limited to low-energy consumer electronics. | Select SMAJ14A only for cost-sensitive, non-automotive applications with <500 W surge exposure and ambient TA < 85 °C. |
| SMCJ14A | Same DO-214AB (SMC) package, identical VWM/VBR/PPPM/IPPM, but rated for TJ = 175 °C and not AEC-Q101 qualified. | Lacks automotive qualification evidence; may require additional validation for under-hood deployment. | Choose SMCJ14A for industrial applications needing same surge rating but without mandatory AEC-Q101 certification. |
Compared with SMAJ14A and SMCJ14A, the 3KASMC14AHE3_A/H uniquely combines AEC-Q101 qualification, 185 °C junction rating, and 3000 W surge capability in DO-214AB - making it the only option qualified for high-temperature automotive powertrain and chassis systems without derating.
Availability
3KASMC14AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial motor drive gate protection, and telecom power supply input protection requiring stable component supply and long-term lifecycle support.
Supply support for 3KASMC14AHE3_A/H 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 qualification.
The 3KASMC series was engineered specifically for high-temperature, high-surge automotive and industrial environments - delivering PAR® technology benefits including stable leakage, low clamping ratio, and extended lifetime under thermal stress.
FAQ
What is the clamping voltage of the 3KASMC14AHE3_A/H at its rated peak pulse current?
The 3KASMC14AHE3_A/H has a maximum clamping voltage (VC) of 23.2 V at its rated peak pulse current (IPPM) of 129 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 89962 and defines the upper voltage limit imposed on protected circuits during worst-case surge events. The 3KASMC14AHE3_A/H maintains this clamping performance across its full operating temperature range.
Is the 3KASMC14AHE3_A/H qualified for automotive applications?
Yes, the 3KASMC14AHE3_A/H is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (document 89962, page 1). It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per JEDEC standards. The 3KASMC14AHE3_A/H also supports junction temperatures up to +185 °C, meeting under-hood automotive reliability requirements beyond standard AEC-Q101 scope.
What package type does the 3KASMC14AHE3_A/H use, and what are its key mechanical features?
The 3KASMC14AHE3_A/H uses the DO-214AB (SMC) surface-mount package, with dimensions of 7.11 mm × 6.22 mm × 2.90 mm (length × width × height). Key mechanical features include matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, UL 94 V-0 molding compound, and a cathode identification band. The 3KASMC14AHE3_A/H meets MSL Level 1 and supports lead-free reflow up to 260 °C.
How does the 3KASMC14AHE3_A/H differ from the standard SMCJ14A TVS diode?
The 3KASMC14AHE3_A/H differs from SMCJ14A primarily in its extended junction temperature rating (+185 °C vs. +175 °C) and formal AEC-Q101 qualification. Both share DO-214AB packaging and identical electrical ratings (VWM = 14 V, PPPM = 3000 W), but the 3KASMC14AHE3_A/H includes enhanced process controls for automotive-grade consistency and long-term reliability validation. The 3KASMC14AHE3_A/H is designated for mission-critical automotive deployments where SMCJ14A may lack certification evidence.
What is the maximum reverse leakage current of the 3KASMC14AHE3_A/H at its stand-off voltage?
The 3KASMC14AHE3_A/H exhibits a maximum reverse leakage current (IR) of 1.0 µA at its stand-off voltage (VWM = 14 V) and ambient temperature (TA = 25 °C), as specified in Table 1 of Vishay document 89962. At elevated temperature (TJ = 150 °C), leakage remains ≤10 µA - confirming stable performance in high-temperature environments. This low leakage preserves signal integrity in precision sensor and data-line protection applications using the 3KASMC14AHE3_A/H.
3KASMC14AHE3_A/H 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):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 23.2V
- Current - Peak Pulse (10/1000µs):
- 129A
- 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)
3KASMC14AHE3_A/H FAQ
1.How can I place an order for 3KASMC14AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC14AHE3_A/H 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 3KASMC14AHE3_A/H reliable?
The price and inventory of 3KASMC14AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC14AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 3KASMC14AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC14AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC14AHE3_A/H?
3KASMC14AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC14AHE3_A/H 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 3KASMC14AHE3_A/H?
For technical support, including 3KASMC14AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC14AHE3_A/H requirements.
6.How does Aetrix verify that 3KASMC14AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC14AHE3_A/H 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 3KASMC14AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 3KASMC14AHE3_A/H?
All 3KASMC14AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC14AHE3_A/H, 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 3KASMC14AHE3_A/H part is unused and in its original packaging.
Return procedure for 3KASMC14AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC14AHE3_A/H 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 …
