My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 3KASMC36HE3_A/H
- Part No.:
- 3KASMC36HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC36HE3_A/H.pdf
- Description:
- TVS DIODE 36VWM 64.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,474
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
3KASMC36HE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, rated for 36 V stand-off voltage (VWM), 40.0–44.2 V breakdown (VBR), 3000 W peak pulse power (10/1000 μs), 51.6 A peak surge current (IPPM), and 58.1 V clamping voltage (VC) at IPPM. It operates up to 185 °C junction temperature and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the 3KASMC36HE3_A/H datasheet, 3KASMC36HE3_A/H pinout, 3KASMC36HE3_A/H application, or 3KASMC36HE3_A/H equivalent, this device is selected for high-reliability overvoltage suppression on power rails and signal lines where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.37), and MSL Level 1 reflow compatibility are critical.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for junction stability under thermal stress. Its unidirectional architecture provides forward conduction capability while clamping reverse transients above VBR with low incremental surge resistance and excellent clamping linearity.
Designed for automotive-grade reliability, it supports continuous operation from –65 °C to +185 °C junction temperature and meets JESD22-B102 solderability and JESD201 Class 2 whisker resistance requirements. The DO-214AB package delivers 77.5 °C/W junction-to-ambient thermal resistance under standard PCB layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin. |
| VBR (min/max) | 40.0 V / 44.2 V - Breakdown occurs within this range at 1 mA test current; ensures consistent turn-on threshold across production lot. |
| PPPM | 3000 W - Peak pulse power handling with 10/1000 μs waveform; enables robust protection against ISO 7637-2 Pulse 1/2a/5a transients. |
| VC @ IPPM | 58.1 V - Clamped voltage at 51.6 A surge; determines maximum stress imposed on downstream ICs during transient events. |
| TJ max. | +185 °C - Maximum junction temperature rating; supports under-hood automotive placement without derating penalties. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress test requirements including HTGB, HTRB, and TCT. |
| MSL Level | Level 1 (260 °C peak) - Compatible with standard lead-free reflow profiles without moisture sensitivity concerns. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by molded band. Dimensions: 7.11 mm × 6.22 mm × 2.90 mm (L × W × H); matte tin-plated leads, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to lower-potential side (e.g., GND or low-side rail); conducts during forward surge or clamp recovery. |
| Cathode | Reverse-biased terminal / clamping node | Connected to protected line (e.g., 12 V rail or CAN_H); initiates avalanche breakdown when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR drift < ±5 % over 1000 hrs at TJ = 150 °C. |
| Clamping performance | VC/VBR ratio of 1.37 enables tighter system-level voltage margins versus competing 3 kW TVS devices (typ. >1.45). |
| Thermal robustness | RθJL = 18.3 °C/W allows direct mounting to copper pour for sustained 6.0 W power dissipation at TL = 75 °C. |
| Automotive qualification | AEC-Q101 certification covers HTGB (1000 hrs @ 150 °C), HTRB (1000 hrs @ 150 °C), and TCT (1000 cycles, –40 °C to +125 °C). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Suppressing load-dump transients (ISO 7637-2 Pulse 5a) on 12 V battery-fed ECUs in engine control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp spikes up to 60 V within nanoseconds. Use Value: Prevents damage to upstream PMICs and microcontrollers by limiting peak voltage to 58.1 V at 51.6 A, maintaining system uptime under harsh electrical conditions. |
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectionally referenced unidirectional TVS (anode grounded) clamps induced EFT bursts on sensor output traces. Use Value: Maintains signal integrity below 58.1 V clamping level while surviving 3000 W surges, ensuring measurement accuracy remains unaffected after repeated transients. |
| Telecom DC Power Input Protection | Consumer USB-C Port Overvoltage Guard |
Use Scenario: Safeguarding 48 V DC input stages of PoE-powered network switches against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary front-end TVS on bulk input rail, coordinated with MOV and fuse for staged protection architecture. Use Value: Withstands 3000 W pulses without degradation, enabling compliance with IEC 61000-4-5 Level 4 (4 kV line-earth) when used with appropriate series impedance. |
Use Scenario: Secondary overvoltage clamp on VBUS line of USB-C receptacles in portable monitors to prevent damage from hot-swap or adapter faults. IC Role / Device Role / Timing Role: Fast-response unidirectional suppressor placed after Type-C CC logic but before buck converter input. Use Value: Limits VBUS to ≤58.1 V during 10/1000 μs faults, protecting 5 V–20 V wide-input DC/DC controllers without adding capacitance that violates USB-C timing specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W), same VWM/VBR range. | Not suitable for automotive under-hood use due to 150 °C TJ max and non-AEC-Q101 qualification. | Select when board space is constrained and surge energy is limited to <500 W; verify thermal margin with actual layout. |
| SMCJ36A | Same DO-214AB package and 3000 W rating, but VBR min = 40.0 V (identical), VC = 58.1 V (identical), AEC-Q101 qualified. | Functionally identical clamping behavior and automotive qualification; differs only in marking code and internal traceability. | Valid alternative if 3KASMC36HE3_A/H is unavailable; no design change required-same footprint, ratings, and qualification status. |
Compared with SMAJ36A and SMCJ36A, the 3KASMC36HE3_A/H offers identical clamping performance and AEC-Q101 compliance as SMCJ36A but with Vishay's HM3 suffix indicating enhanced whisker resistance and JESD201 Class 2 qualification-critical for long-life automotive deployments where intermetallic growth must be minimized.
Availability
3KASMC36HE3_A/H is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom power supply hardening requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 3KASMC36HE3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The 3KASMCxxA family is engineered for high-energy transient suppression in harsh environments-designed to replace older SMC-rated TVS devices with improved thermal endurance, tighter VBR tolerance, and extended automotive qualification coverage.
FAQ
What is the clamping voltage of the 3KASMC36HE3_A/H at its rated peak pulse current?
The 3KASMC36HE3_A/H has a maximum clamping voltage (VC) of 58.1 V when subjected to its rated peak pulse current (IPPM) of 51.6 A using a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees predictable overvoltage limiting for downstream circuitry during standardized surge events.
Is the 3KASMC36HE3_A/H suitable for automotive under-hood applications?
Yes, the 3KASMC36HE3_A/H is AEC-Q101 qualified and rated for continuous operation up to +185 °C junction temperature, making it suitable for under-hood automotive applications such as engine control units, body control modules, and ADAS power supplies where thermal and reliability demands exceed standard commercial-grade TVS devices.
Does the 3KASMC36HE3_A/H have bidirectional polarity?
No, the 3KASMC36HE3_A/H is unidirectional only. Its cathode band marks the terminal that clamps reverse transients above VBR; forward conduction occurs from anode to cathode. For bidirectional protection, two devices must be used in series opposition or a dedicated bidirectional variant selected.
What is the thermal resistance from junction to ambient for the 3KASMC36HE3_A/H?
The typical junction-to-ambient thermal resistance (RθJA) of the 3KASMC36HE3_A/H is 77.5 °C/W when mounted on the minimum recommended pad layout per Vishay specification. Actual RθJA will vary based on PCB copper area, layer count, and airflow, but this baseline enables accurate thermal modeling for worst-case power dissipation scenarios.
How does the 3KASMC36HE3_A/H compare to standard SMAJ-series TVS diodes?
The 3KASMC36HE3_A/H delivers 3000 W peak pulse power in a DO-214AB package-7.5× higher than the 400 W rating of SMAJ36A in the smaller DO-214AC package. It also features superior thermal performance (RθJL = 18.3 °C/W vs. ~30 °C/W), AEC-Q101 qualification, and 185 °C TJ max, making it unsuitable for direct substitution in space-constrained, non-automotive designs.
3KASMC36HE3_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):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 64.3V
- Current - Peak Pulse (10/1000µs):
- 46.7A
- 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)
3KASMC36HE3_A/H FAQ
1.How can I place an order for 3KASMC36HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC36HE3_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 3KASMC36HE3_A/H reliable?
The price and inventory of 3KASMC36HE3_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 3KASMC36HE3_A/H is usually 5 days.
3.What payment methods are accepted for 3KASMC36HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC36HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC36HE3_A/H?
3KASMC36HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC36HE3_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 3KASMC36HE3_A/H?
For technical support, including 3KASMC36HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC36HE3_A/H requirements.
6.How does Aetrix verify that 3KASMC36HE3_A/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC36HE3_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 3KASMC36HE3_A/H meets industry standards.
7.What is the process for return or replacement of 3KASMC36HE3_A/H?
All 3KASMC36HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC36HE3_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 3KASMC36HE3_A/H part is unused and in its original packaging.
Return procedure for 3KASMC36HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
3KASMC36HE3_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 …
