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Vishay General Semiconductor - Diodes Division 3KASMC36AHM3_B/H
- Part No.:
- 3KASMC36AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
3KASMC36AHM3_B/H.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,700
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Product details
Overview
3KASMC36AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMC (DO-214AB) package, rated for 36 V stand-off voltage (VWM), 42.1 V nominal breakdown (VBR), 3000 W peak pulse power (10/1000 μs), and 185 °C maximum junction temperature - designed to protect automotive sensor signal lines and MOSFET gates against inductive switching transients.
For engineers reviewing the 3KASMC36AHM3_B/H datasheet, 3KASMC36AHM3_B/H pinout, 3KASMC36AHM3_B/H application, or 3KASMC36AHM3_B/H equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, clamping performance at 51.6 V (IPPM), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with junction passivation optimized for high-reliability operation under thermal stress. Its unidirectional polarity enables clamping only during reverse overvoltage events, while its low incremental surge resistance ensures minimal voltage overshoot during 3000 W transient suppression.
The device operates across -65 °C to +185 °C junction temperature range and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is AEC-Q101 qualified (HM3 suffix), halogen-free, and features matte tin-plated leads solderable per J-STD-002 and JESD22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 36 V rail protection. |
| VBR (nom) | 42.1 V - nominal breakdown voltage at 1 mA test current; triggers clamping onset within ±2.1 V tolerance band. |
| VC @ IPPM | 58.1 V - maximum clamped voltage at 51.6 A peak pulse current; determines worst-case overvoltage seen by protected IC. |
| PPPM | 3000 W - peak pulse power handling capability with 10/1000 μs waveform; supports robust protection against ISO 7637-2 Pulse 1/2a/5a transients. |
| TJ max | +185 °C - maximum junction temperature rating; enables deployment in under-hood automotive environments without thermal derating penalties. |
| Polarity | Unidirectional - provides reverse-biased clamping only; requires correct orientation relative to protected line polarity. |
| RθJA | 77.5 °C/W - typical junction-to-ambient thermal resistance on standard PCB pad layout; informs board-level thermal design for sustained power dissipation. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, cathode indicated by color band. Dimensions: 6.22 mm × 5.59 mm × 2.90 mm (L × W × H); recommended pad layout per Vishay outline drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Clamping output node | Connected to protected line; conducts during overvoltage to shunt current to ground or supply rail. |
| Anode | Reference terminal | Typically tied to system ground (for unidirectional configuration); establishes reference for clamping threshold. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC specification. |
| Halogen-free & RoHS-compliant | Meets JEDEC JS709E and IPC-1752A requirements; eliminates brominated flame retardants and lead-free assembly compatibility. |
| MSL Level 1 | Zero moisture sensitivity; allows unlimited floor life and single-reflow processing at 260 °C peak without baking. |
| 185 °C TJ max | Enables direct placement near high-temperature components (e.g., power converters, engine control modules) without derating. |
| Low clamping ratio (VC/VBR) | 1.38 - calculated as 58.1 V / 42.1 V; indicates tight voltage control during surge events, minimizing stress on downstream ICs. |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive kickback in 12 V/24 V vehicle systems. IC Role / Device Role: Unidirectional TVS placed between signal line and ground to clamp negative transients and prevent latch-up in interface ICs. Use Value: Withstands 3000 W surges and maintains clamping below 58.1 V, ensuring signal integrity and preventing damage to sub-5 V tolerant transceivers. |
Use Scenario: Safeguarding digital I/O and feedback lines of PLC modules and servo drives exposed to relay coil flyback and contact arcing. IC Role / Device Role: Standoff-rated TVS suppressing fast-rising transients (<1 ns rise time) on isolated input/output channels. Use Value: 42.1 V VBR aligns with 36 V industrial control rails; 185 °C TJ rating supports operation inside sealed enclosures with ambient >105 °C. |
| Automotive Power MOSFET Gate Protection | Telecom DC Power Input Stage |
Use Scenario: Shielding high-side N-channel MOSFET gates in body control modules from gate-source overvoltage caused by Miller coupling during switching. IC Role / Device Role: Low-capacitance unidirectional TVS connected between gate and source to clamp transient spikes without affecting PWM timing. Use Value: Fast response time and 58.1 V VC limit gate-source voltage excursion, preserving MOSFET oxide integrity and preventing unintended turn-on. |
Use Scenario: Front-end transient suppression on 48 V telecom power supplies subjected to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role: Primary-stage TVS absorbing bulk energy before secondary-stage filtering and regulation stages. Use Value: 3000 W PPPM rating handles 2 kV/1 kA combination wave surges; halogen-free construction complies with NEBS GR-63-CORE requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36AHE3_A/H | Same VWM (36 V), lower PPPM (400 W), smaller SMA package (DO-214AC), non-AEC-Q101 rated. | Not suitable for automotive under-hood use; limited to consumer/industrial board-level protection where space and cost constrain higher-power solutions. | Select when footprint area is critical and surge threat level is ≤400 W (e.g., USB port ESD + minor EFT). |
| SMCJ36AHE3_A/H | Same VWM (36 V), identical PPPM (3000 W), same SMC package, but HE3 suffix (RoHS/AEC-Q101) vs HM3 (halogen-free + RoHS/AEC-Q101). | No functional difference in clamping or thermal performance; differs only in material compliance (halogen content). | Choose 3KASMC36AHM3_B/H if halogen-free requirement is mandated (e.g., EU automotive Tier 1 procurement); otherwise SMCHJ36AHE3_A/H is functionally interchangeable. |
Compared with SMAJ36AHE3_A/H and SMCJ36AHE3_A/H, the 3KASMC36AHM3_B/H delivers identical 3000 W surge capability and AEC-Q101 qualification but adds halogen-free compliance and tighter VBR tolerance (±2.1 V vs ±5 %), making it preferred for next-generation automotive ECUs requiring full material declaration alignment.
Availability
3KASMC36AHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive I/O safeguarding, and telecom DC power input stage designs requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for 3KASMC36AHM3_B/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 3KASMCxxA series is part of Vishay's PAR® (Protected Anisotropic Rectifier) TVS platform, engineered specifically for high-temperature, high-surge automotive and industrial applications demanding AEC-Q101 validation and extended junction temperature operation.
FAQ
What is the clamping voltage of the 3KASMC36AHM3_B/H at its rated peak pulse current?
The 3KASMC36AHM3_B/H has a maximum clamping voltage (VC) of 58.1 V at its peak pulse current (IPPM) of 51.6 A, measured with a 10/1000 μs waveform. This value is specified in the Electrical Characteristics table and represents the worst-case voltage imposed on the protected circuit during a full-rated transient event. The clamping performance is guaranteed across the full operating temperature range and is critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 3KASMC36AHM3_B/H qualified for automotive applications?
Yes, the 3KASMC36AHM3_B/H is AEC-Q101 qualified, as confirmed by the HM3 suffix in its ordering code and explicit statement in the Vishay datasheet. It undergoes rigorous testing for temperature cycling, highly accelerated life testing (HALT), and mechanical shock per AEC-Q101 Rev G. This qualification validates its suitability for automotive powertrain, chassis, and body electronics where reliability under thermal and vibration stress is mandatory.
What does the "HM3" suffix mean in 3KASMC36AHM3_B/H?
The "HM3" suffix in 3KASMC36AHM3_B/H denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. Per Vishay's ordering information, HM3 parts meet JESD201 Class 2 whisker resistance, use matte tin-plated leads, and contain no brominated or chlorinated flame retardants. This distinguishes it from HE3-suffix variants, which are RoHS- and AEC-Q101-compliant but not halogen-free.
What is the thermal resistance of the 3KASMC36AHM3_B/H, and how does it affect PCB layout?
The 3KASMC36AHM3_B/H has a typical junction-to-ambient thermal resistance (RθJA) of 77.5 °C/W when mounted on Vishay's recommended minimum pad layout. This value assumes standard FR-4 PCB with copper pour; increasing copper area reduces RθJA. For continuous power dissipation scenarios, designers must ensure PD (6.0 W) derating curves (Fig. 6) are followed - especially above 25 °C ambient - to avoid exceeding the 185 °C maximum junction temperature.
How does the 3KASMC36AHM3_B/H compare to standard SMC-package TVS diodes like SMAJ or SMCJ series?
The 3KASMC36AHM3_B/H belongs to Vishay's PAR® family and offers identical 3000 W PPPM and SMC (DO-214AB) packaging as the SMCJ36AHE3_A/H, but with enhanced junction passivation and tighter VBR tolerance (±2.1 V vs ±5 %). Unlike SMAJ36AHE3_A/H (400 W, SMA package), it delivers full automotive-grade surge handling in the same physical footprint. Its 185 °C TJ rating also exceeds most legacy SMCJ devices rated to 150 °C or 175 °C.
3KASMC36AHM3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 51.6A
- 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)
3KASMC36AHM3_B/H FAQ
1.How can I place an order for 3KASMC36AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 3KASMC36AHM3_B/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 3KASMC36AHM3_B/H reliable?
The price and inventory of 3KASMC36AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 3KASMC36AHM3_B/H is usually 5 days.
3.What payment methods are accepted for 3KASMC36AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 3KASMC36AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 3KASMC36AHM3_B/H?
3KASMC36AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 3KASMC36AHM3_B/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 3KASMC36AHM3_B/H?
For technical support, including 3KASMC36AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 3KASMC36AHM3_B/H requirements.
6.How does Aetrix verify that 3KASMC36AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All 3KASMC36AHM3_B/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 3KASMC36AHM3_B/H meets industry standards.
7.What is the process for return or replacement of 3KASMC36AHM3_B/H?
All 3KASMC36AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with 3KASMC36AHM3_B/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 3KASMC36AHM3_B/H part is unused and in its original packaging.
Return procedure for 3KASMC36AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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