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Vishay General Semiconductor - Diodes Division 5KASMC43AHM3/9A
- Part No.:
- 5KASMC43AHM3/9A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC43AHM3/9A.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,027
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Product details
Overview
5KASMC43AHM3/9A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AB (SMCJ) package, designed for high-energy surge protection with 5000 W peak pulse power (10/1000 µs), 43 V stand-off voltage (VWM), and 69.4 V maximum clamping voltage (VC) at 72 A peak pulse current. It operates from –65 °C to +185 °C and is AEC-Q101 qualified for automotive electronics.
For engineers reviewing the 5KASMC43AHM3/9A datasheet, 5KASMC43AHM3/9A pinout, 5KASMC43AHM3/9A application, or 5KASMC43AHM3/9A equivalent, key selection criteria include clamping performance under 10/1000 µs transients, thermal robustness up to 185 °C junction temperature, unidirectional polarity compatibility with DC-biased signal lines, and MSL Level 1 reflow capability at 260 °C peak.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of inductive switching spikes and lightning-induced surges on sensitive nodes. Its 185 °C maximum junction temperature and AEC-Q101 qualification confirm suitability for under-hood automotive modules and industrial control systems exposed to high ambient thermal stress.
The device is rated for 5000 W peak pulse power per 10/1000 µs waveform, with clamping voltage tightly specified at 69.4 V at 72 A IPPM - critical for protecting 48 V automotive subsystems and 36–48 V industrial power rails without overvoltage stress on downstream MOSFETs or ICs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for DC bias on protected line. |
| VBR (min/max) | 47.8 V / 52.8 V at 1 mA - Breakdown threshold range ensures reliable turn-on margin above VWM while avoiding premature conduction. |
| VC @ IPPM | 69.4 V at 72 A - Clamping voltage during full-rated 5000 W transient; defines worst-case overvoltage seen by protected circuitry. |
| PPPM | 5000 W (10/1000 µs) - Peak surge energy handling capacity; enables protection against ISO 7637-2 Pulse 5a/b and IEC 61000-4-5 Level 4 surges. |
| TJ max. | +185 °C - Enables operation in high-temperature environments such as engine control units and motor drive inverters without derating. |
| Polarity | Unidirectional - Designed for DC-biased applications where reverse conduction must be blocked except during surge events. |
| Package | DO-214AB (SMCJ) - Industry-standard SMT outline with 7.75 mm × 6.22 mm footprint and J-bend leads; supports automated assembly and high thermal dissipation. |
Pinout & Package
Package: DO-214AB (SMCJ), surface-mount, unidirectional configuration with cathode indicated by molded band. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and whisker-tested per JESD 201 Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during positive transients on cathode side. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 48 V rail or sensor output); conducts surge current to anode when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design improves long-term reliability under repeated surge stress and high-temperature bias conditions. |
| AEC-Q101 qualification | Validated for automotive-grade production use, including temperature cycling, humidity testing, and mechanical shock per JEDEC standards. |
| MSL Level 1 | Rated for reflow soldering up to 260 °C peak without moisture-induced damage; eliminates bake requirement prior to assembly. |
| Low Rsurge | Minimal incremental surge resistance ensures stable clamping voltage across wide current range, reducing overshoot during fast-rising transients. |
| High TJ capability | 185 °C maximum junction temperature allows direct placement near heat sources (e.g., power MOSFETs) without thermal derating penalties. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs and body control modules from load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between 48 V rail and ground to shunt surge energy before it reaches PMICs or microcontrollers. Use Value: 69.4 V clamping voltage ensures downstream 75 V-rated components remain within safe operating area during 100 V+ load dump events. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected across differential sensor lines to suppress sub-100 ns ESD pulses without distorting mV-level signals. Use Value: Fast response time (<1 ns) and 43 V VWM allow integration on 36 V sensor supply rails without leakage-induced offset errors. |
| Telecom DC Power Feeds | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding PoE++ (IEEE 802.3bt) powered devices against induced surges on 57 V DC power pairs. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional 5KASMC43AHM3/9A placed on positive feed line with cathode toward supply to block negative-going transients. Use Value: 5000 W rating handles combined lightning and switching surge energy common in outdoor telecom cabinets without thermal runaway. |
Use Scenario: Clamping gate-source voltage spikes on 650 V SiC MOSFETs in servo drives subjected to parasitic inductance during hard switching. IC Role / Device Role / Timing Role: TVS mounted directly across gate and source terminals to clamp dV/dt-induced ringing exceeding ±20 V absolute rating. Use Value: 185 °C TJ rating permits placement adjacent to gate driver ICs operating at >125 °C ambient, maintaining clamping integrity over full temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Same DO-214AA package; lower 600 W PPPM, higher VC = 69.7 V at 4.3 A; no AEC-Q101 qualification. | Not suitable for automotive or high-energy industrial surge environments; limited to low-power consumer interfaces. | Select only for cost-sensitive, non-automotive designs with <1 kV surge exposure and no thermal stress requirements. |
| SMCJ43A | Same DO-214AB package and 5000 W rating; identical VWM/VC specs but lacks HM3 halogen-free/AEC-Q101 certification. | Acceptable for industrial use where AEC-Q101 is not mandated, but traceability and RoHS/halogen compliance may be insufficient for Tier 1 automotive BOMs. | Choose when AEC-Q101 and halogen-free status are not required, and standard SMCJ sourcing is preferred for logistics continuity. |
Compared with SMBJ43A and SMCJ43A, the 5KASMC43AHM3/9A delivers certified automotive reliability, guaranteed halogen-free construction, and identical high-energy clamping performance - making it the sole option when AEC-Q101 compliance and 185 °C thermal operation are mandatory.
Availability
5KASMC43AHM3/9A is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, telecom DC feeds, and motor drive gate driver circuits requiring stable component supply and full AEC-Q101 traceability.
Supply support for 5KASMC43AHM3/9A 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 5KASMC43AHM3/9A belongs to Vishay's PAR® (Protective Avalanche Rated) TVS family, engineered specifically for high-temperature, high-surge environments where failure is not an option - such as engine control, battery management, and industrial motion control.
FAQ
What is the maximum clamping voltage of the 5KASMC43AHM3/9A during a 5000 W transient?
The 5KASMC43AHM3/9A has a maximum clamping voltage (VC) of 69.4 V at 72 A peak pulse current, measured under the standardized 10/1000 µs waveform. This value is guaranteed per the Vishay datasheet (Document Number: 89432) and defines the upper voltage limit imposed on protected circuitry during full-rated surge events. Engineers must verify that downstream components' absolute maximum ratings exceed this clamping level.
Is the 5KASMC43AHM3/9A suitable for automotive applications?
Yes, the 5KASMC43AHM3/9A is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood automotive applications including engine control units, battery disconnect units, and ADAS power supplies. Its DO-214AB package, MSL Level 1 rating, and halogen-free HM3 suffix further support compliance with automotive manufacturing and environmental requirements.
What does the "HM3/9A" suffix indicate in 5KASMC43AHM3/9A?
The "HM3" suffix denotes Vishay's halogen-free, RoHS-compliant, and AEC-Q101-qualified construction, while "/9A" specifies the packaging format: 3500 units per 13-inch diameter plastic tape-and-reel. This differs from /57 (850 units on 7-inch reel) and ensures compatibility with high-volume SMT placement equipment used in automotive and industrial production lines.
How does the 5KASMC43AHM3/9A compare to standard SMCJ43A in thermal performance?
The 5KASMC43AHM3/9A shares identical thermal characteristics with SMCJ43A - including RθJA = 100 °C/W (on minimum pad) and RθJM = 20.8 °C/W - but adds verified AEC-Q101 qualification and halogen-free materials. Both parts operate up to +185 °C junction temperature, but only the 5KASMC43AHM3/9A provides documented compliance for automotive safety-critical designs.
Can the 5KASMC43AHM3/9A be used in bidirectional protection configurations?
No, the 5KASMC43AHM3/9A is unidirectional only, with cathode marked by a band and intended for DC-biased lines. For bidirectional AC or floating signal protection, engineers must select a dedicated bidirectional variant (e.g., 5KASMC43CA) or use back-to-back unidirectional devices - the 5KASMC43AHM3/9A alone cannot clamp negative transients relative to ground.
5KASMC43AHM3/9A 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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 5000W (5kW)
- 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)
5KASMC43AHM3/9A FAQ
1.How can I place an order for 5KASMC43AHM3/9A through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC43AHM3/9A 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 5KASMC43AHM3/9A reliable?
The price and inventory of 5KASMC43AHM3/9A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KASMC43AHM3/9A is usually 5 days.
3.What payment methods are accepted for 5KASMC43AHM3/9A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC43AHM3/9A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC43AHM3/9A?
5KASMC43AHM3/9A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC43AHM3/9A 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 5KASMC43AHM3/9A?
For technical support, including 5KASMC43AHM3/9A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC43AHM3/9A requirements.
6.How does Aetrix verify that 5KASMC43AHM3/9A is sourced from the original manufacturer or authorized distributors?
All 5KASMC43AHM3/9A 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 5KASMC43AHM3/9A meets industry standards.
7.What is the process for return or replacement of 5KASMC43AHM3/9A?
All 5KASMC43AHM3/9A units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC43AHM3/9A, 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 5KASMC43AHM3/9A part is unused and in its original packaging.
Return procedure for 5KASMC43AHM3/9A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KASMC43AHM3/9A Tags
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