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Vishay General Semiconductor - Diodes Division 3KASMC15HE3_A/H
- Part No.:
- 3KASMC15HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC15HE3_A/H.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,463
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Product details
Overview
3KASMC15HE3_A/H 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 (VWM), 16.7–18.5 V breakdown voltage (VBR), 3000 W peak pulse power (10/1000 μs), 24.4 V clamping voltage at 123 A IPPM, and qualified to AEC-Q101 for automotive electronics protection.
For engineers reviewing the 3KASMC15HE3_A/H datasheet, 3KASMC15HE3_A/H pinout, 3KASMC15HE3_A/H application, or 3KASMC15HE3_A/H equivalent, key selection criteria include clamping performance under 10/1000 μs surge, TJ = 185 °C junction rating, MSL Level 1 reflow compatibility, uni-directional polarity, and DO-214AB mechanical footprint compliance.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. It delivers fast response time and excellent clamping capability against transients induced by inductive load switching or ESD events on sensitive nodes.
Designed for automotive-grade reliability, it operates across –65 °C to +185 °C junction temperature range, meets JESD201 Class 2 whisker test, and is RoHS-compliant with matte tin-plated leads solderable per J-STD-002 and JESD22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 16.7 V / 18.5 V - breakdown occurs within this range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 24.4 V - clamping voltage at 123 A peak pulse current, limiting downstream voltage stress |
| PPPM | 3000 W - peak transient energy absorption capability with 10/1000 μs waveform |
| TJ max. | +185 °C - enables operation in under-hood automotive environments without derating |
| Polarity | Uni-directional - protects against positive transients only; cathode marked by band |
| MSL Level | Level 1 - supports standard SMT reflow up to 260 °C peak without preconditioning |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, molded case meeting UL 94 V-0 flammability rating; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path during clamping | Connected to protected circuit ground or low-side reference; carries full surge current |
| Cathode | Clamping voltage reference node | Connected to protected line (e.g., 12 V rail); voltage referenced to anode during conduction |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure ensures stable leakage and breakdown over lifetime and temperature |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics |
| Low RSURGE | Minimizes voltage overshoot during fast transients by reducing dynamic impedance under surge |
| High IFSM | 200 A 8.3 ms surge rating supports robust protection against repetitive load-dump events |
| Thermal resistance RθJA | 77.5 °C/W - enables effective heat dissipation on standard PCB pad layout without heatsink |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control modules from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Uni-directional TVS clamp placed between battery rail and LDO input to limit voltage excursions. Use Value: Clamps to 24.4 V at 123 A, preventing damage to downstream PMICs and microcontrollers rated for ≤28 V absolute maximum. | Use Scenario: Safeguarding analog output lines of pressure or temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: TVS placed across signal and ground to absorb ESD and switching noise coupled onto 4–20 mA or 0–10 V outputs. Use Value: 15 V VWM allows normal sensor operation while clamping >1 kV ESD pulses to safe levels below IC input limits. |
| Consumer Power Adapter Input Stage | Telecom DC Feeding Line Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: TVS connected between regulated 5–20 V output and ground to absorb flyback spikes from regulator failure or cable disconnect. Use Value: 3000 W PPPM handles short-duration surges without degradation; 185 °C TJ rating supports compact, thermally constrained designs. | Use Scenario: Protecting PoE-powered equipment (e.g., IP cameras) from lightning-induced surges on 48 V DC feeding lines. IC Role / Device Role / Timing Role: TVS installed on DC input side of DC/DC converter to shunt surge energy before isolation stage. Use Value: 24.4 V clamping ensures converter input remains within 36 V absolute max rating, preserving system uptime and safety certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Lower PPPM (400 W), same DO-214AC (SMA) package, VBR 16.7–18.5 V, VC = 24.4 V at 16.6 A | Not suitable for high-energy automotive load-dump; limited to consumer-grade surge immunity | Select when cost sensitivity outweighs energy handling; verify IPPM margin for target threat level |
| SMCJ15A | Same DO-214AB (SMC) package, identical VWM/VBR/VC specs, but rated for 1500 W PPPM (vs. 3000 W) | Acceptable for industrial I/O protection where surge energy is ≤1500 W; insufficient for ISO 7637-2 Pulse 5a | Choose if legacy design uses SMCJ series and thermal budget permits lower power rating |
Compared with SMAJ15A and SMCJ15A, the 3KASMC15HE3_A/H delivers double the surge energy capacity of SMCJ15A and nearly 8× that of SMAJ15A-enabling single-device compliance with stringent automotive load-dump standards without parallel stacking.
Availability
3KASMC15HE3_A/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feeding line surge suppression requiring stable component supply and AEC-Q101 traceability.
Supply support for 3KASMC15HE3_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, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The 3KASMCxxA family is designed specifically for high-energy transient suppression in harsh-environment applications, targeting under-hood automotive, industrial motor drives, and infrastructure power systems where 185 °C operation and 3000 W surge capability are mandatory.
FAQ
What is the clamping voltage of the 3KASMC15HE3_A/H at its rated peak pulse current?
The 3KASMC15HE3_A/H has a maximum clamping voltage (VC) of 24.4 V at 123 A peak pulse current (IPPM), measured using the standard 10/1000 μs waveform. This value ensures downstream components see no more than 24.4 V during worst-case surge events, directly supporting design margin for 28 V-rated ICs. The 3KASMC15HE3_A/H maintains this clamping performance across its full operating temperature range.
Is the 3KASMC15HE3_A/H suitable for automotive applications?
Yes, the 3KASMC15HE3_A/H is AEC-Q101 qualified and rated for TJ = 185 °C, making it suitable for under-hood automotive applications such as engine control units, body control modules, and ADAS power supplies. Its DO-214AB package, MSL Level 1 rating, and 3000 W surge capability meet ISO 7637-2 Pulse 5a requirements. The 3KASMC15HE3_A/H is explicitly listed in Vishay's AEC-Q101 qualified product portfolio.
What does the "_A/H" suffix indicate in 3KASMC15HE3_A/H?
The "_A/H" suffix in 3KASMC15HE3_A/H denotes the packaging configuration: "H" specifies 7-inch diameter plastic tape and reel with 850 units per reel, while "A" indicates the base P/NHM3 revision level compliant with RoHS and AEC-Q101. This ordering code aligns with Vishay's documented format in datasheet section "ORDERING INFORMATION". The 3KASMC15HE3_A/H is not a sample or evaluation variant-it is a full-production, qualified part.
How does the thermal performance of the 3KASMC15HE3_A/H compare to standard SMA-package TVS diodes?
The 3KASMC15HE3_A/H in DO-214AB (SMC) package offers significantly better thermal performance than SMA-packaged equivalents: its typical junction-to-ambient thermal resistance (RθJA) is 77.5 °C/W versus ~120–150 °C/W for SMA devices. This allows higher sustained power dissipation and improved reliability in high-temperature environments. The 3KASMC15HE3_A/H also supports higher peak surge currents due to larger copper area and lower parasitic inductance.
Can the 3KASMC15HE3_A/H be used in bidirectional configurations?
No, the 3KASMC15HE3_A/H is strictly unidirectional, as confirmed in the "FEATURES" section of the datasheet ("Available in uni-directional polarity only") and verified by its single cathode band marking. For bidirectional protection, a separate device such as the 3KASMC15CA must be selected. Using two 3KASMC15HE3_A/H devices in series anti-parallel is not recommended due to mismatched VBR tolerance and undefined behavior under negative transients.
3KASMC15HE3_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):
- 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/H FAQ
1.How can I place an order for 3KASMC15HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC15HE3_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 3KASMC15HE3_A/H reliable?
The price and inventory of 3KASMC15HE3_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 3KASMC15HE3_A/H is usually 5 days.
3.What payment methods are accepted for 3KASMC15HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC15HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC15HE3_A/H?
3KASMC15HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC15HE3_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 3KASMC15HE3_A/H?
For technical support, including 3KASMC15HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC15HE3_A/H requirements.
6.How does Aetrix verify that 3KASMC15HE3_A/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC15HE3_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 3KASMC15HE3_A/H meets industry standards.
7.What is the process for return or replacement of 3KASMC15HE3_A/H?
All 3KASMC15HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC15HE3_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 3KASMC15HE3_A/H part is unused and in its original packaging.
Return procedure for 3KASMC15HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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