My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 5KASMC43AHM3_A/H
- Part No.:
- 5KASMC43AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC43AHM3_A/H.pdf
- Description:
- TVS DIODE 43VWM 69.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,183
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
5KASMC43AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for high-energy surge clamping in automotive and industrial power rails. It delivers 5000 W peak pulse power (10/1000 μs), clamps at 72.0 V under 69.4 A peak surge current, and operates up to 185 °C junction temperature. It is AEC-Q101 qualified and housed in SMC (DO-214AB) package for engine control unit (ECU) power line protection.
For engineers reviewing the 5KASMC43AHM3_A/H datasheet, 5KASMC43AHM3_A/H pinout, 5KASMC43AHM3_A/H application, or 5KASMC43AHM3_A/H equivalent, key selection criteria include its 43 V stand-off voltage, low 0.093 %/°C VBR temperature coefficient, unidirectional polarity, MSL Level 1 rating, and halogen-free RoHS-compliant HM3 packaging with matte tin terminals.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping performance across -65 °C to +185 °C operating range. Its 100 °C/W junction-to-ambient thermal resistance and 20.8 °C/W junction-to-mount resistance support reliable operation on standard PCB pad layouts without forced cooling.
The device responds to transients in sub-nanosecond time and maintains low incremental surge resistance during 10/1000 μs surges. Its breakdown voltage is specified at 47.8–52.8 V (min–max) with 1.0 mA test current, and it exhibits only 20.0 μA max reverse leakage at 43 V stand-off voltage and 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - Maximum continuous reverse working voltage before clamping begins |
| VBR (min–max) | 47.8–52.8 V at 1.0 mA - Ensures consistent breakdown initiation across production lot and temperature |
| VC @ IPPM | 72.0 V at 69.4 A - Clamping voltage limits downstream IC stress during ISO 7637-2 Pulse 5a surges |
| PPPM | 5000 W (10/1000 μs) - Withstands automotive load-dump energy without failure |
| TJ max | +185 °C - Enables placement near high-temperature engine compartments or power converters |
| αT | 0.093 %/°C - Predictable VBR drift supports robust overvoltage margining in wide-temp designs |
| Package | SMC (DO-214AB) - Standardized footprint compatible with automated SMT assembly and IPC-7351B land patterns |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, unidirectional configuration with cathode band marking. Matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability requirements; HM3 suffix confirms JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line (e.g., 12 V battery rail); clamps positive transients to ground |
| Anode | Cathode of internal PN junction | Connected to system ground; provides low-impedance return path during surge conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive power electronics including ECUs, ADAS sensors, and body controllers |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| 185 °C junction rating | Supports under-hood placement without derating in ambient temperatures up to 125 °C |
| 5000 W peak pulse power | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 12 V systems |
| Low VC/VBR ratio (1.43) | Minimizes clamping overshoot while maintaining sufficient margin above VWM |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECU power inputs against load dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and input filter capacitor. Use Value: Limits transient voltage to ≤72.0 V during 69.4 A surges, preventing damage to downstream LDOs and microcontrollers. |
Use Scenario: Safeguarding 48 V DC bus in servo drives against inductive switching spikes from IGBT gate drivers. IC Role / Device Role / Timing Role: High-power transient absorber mounted directly across bus rails near power stage. Use Value: Absorbs 5000 W pulses without degradation, enabling compact bus design without oversized capacitors. |
| Telecom Power Interface | Renewable Energy Charge Controller |
Use Scenario: Shielding PoE-powered switch ports from lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Secondary-level TVS on 48 V auxiliary supply line feeding PHY interface ICs. Use Value: Fast response (<1 ns) and low clamping voltage preserve signal integrity while meeting IEC 61000-4-5 Level 4 immunity. |
Use Scenario: Protecting solar charge controller MOSFETs from reverse-polarity connection and PV string surges. IC Role / Device Role / Timing Role: Bidirectional protection not required; unidirectional 5KASMC43AHM3_A/H clamps positive overvoltage on battery-side rail. Use Value: 185 °C rating ensures long-term stability in outdoor enclosures exposed to desert or tropical ambient extremes. |
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 | Lower PPPM = 600 W; same VWM = 43 V; SMB package (smaller footprint, higher RθJA) | Not suitable for load dump; limited to low-energy ESD/surge events in consumer IoT nodes | Select when space-constrained and surge energy < 100 mJ; avoid for automotive power rails |
| 5.0SMDJ43A | Same PPPM = 5000 W; DO-214AB package; higher VC = 77.4 V at 64.5 A; no AEC-Q101 qualification | Lacks automotive qualification; requires additional reliability validation for ECU use | Acceptable for industrial 48 V systems where AEC-Q101 is not mandated |
Compared with SMBJ43A and 5.0SMDJ43A, the 5KASMC43AHM3_A/H uniquely combines AEC-Q101 qualification, 185 °C operation, and 72.0 V clamping in a single SMC package-enabling drop-in compliance for automotive Tier 1 power designs without layout or thermal redesign.
Availability
5KASMC43AHM3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drives, telecom power interfaces, and renewable energy charge controllers requiring stable component supply and long-lifecycle availability.
Supply support for 5KASMC43AHM3_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 high-reliability and automotive-grade solutions.
The 5KASMCxxA family was engineered specifically for high-temperature, high-energy transient suppression in automotive power distribution networks and industrial 48 V systems-prioritizing AEC-Q101 compliance, thermal robustness, and repeatable clamping performance.
FAQ
What is the maximum clamping voltage of the 5KASMC43AHM3_A/H under full-rated surge current?
The 5KASMC43AHM3_A/H has a maximum clamping voltage (VC) of 72.0 V when subjected to its rated peak pulse current of 69.4 A using a 10/1000 μs waveform. This value is measured per Figure 3 in the Vishay datasheet 89432 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The 5KASMC43AHM3_A/H maintains this clamping performance across its full operating temperature range.
Is the 5KASMC43AHM3_A/H suitable for bidirectional transient protection?
No, the 5KASMC43AHM3_A/H is a unidirectional TVS diode and is not rated for reverse-polarity or AC-line surge suppression. Its electrical characteristics-including breakdown voltage, leakage, and clamping-are specified only for forward-biased (cathode-positive) surge conditions. For bidirectional protection, a separate device such as the 5KASMC43CA or paired unidirectional units would be required. The 5KASMC43AHM3_A/H data sheet explicitly states "Available in unidirectional polarity only."
Does the 5KASMC43AHM3_A/H require heatsinking in typical automotive applications?
In most automotive applications-such as ECU power rail protection-the 5KASMC43AHM3_A/H operates within safe thermal limits using standard PCB copper pour per the recommended pad layout, without external heatsinking. Its RθJA = 100 °C/W and RθJM = 20.8 °C/W allow dissipation of its 6.5 W steady-state power rating on minimum pads. Heatsinking becomes necessary only under sustained high-duty-cycle surge conditions exceeding datasheet derating curves, which are uncommon in ISO 7637-2-compliant designs.
What does the "HM3_A/H" suffix indicate in the 5KASMC43AHM3_A/H part number?
The "HM3" suffix denotes Vishay's halogen-free, RoHS-compliant, and AEC-Q101-qualified molding compound and terminal finish; "A" is the revision code; "H" specifies the preferred package code for 7-inch tape-and-reel delivery (850 units per reel). The full ordering code 5KASMC43AHM3_A/H confirms compliance with JESD 201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow compatibility-key for automotive manufacturing. The 5KASMC43AHM3_A/H meets all these specifications as documented in Vishay's 89432 datasheet.
How does the temperature coefficient of VBR affect design margin for the 5KASMC43AHM3_A/H?
The 5KASMC43AHM3_A/H has a typical VBR temperature coefficient (αT) of 0.093 %/°C, meaning its breakdown voltage increases linearly with junction temperature. At 150 °C, VBR rises ~11.7% above its 25 °C value-shifting from 47.8–52.8 V to approximately 53.2–58.8 V. Designers must account for this upward drift when setting overvoltage thresholds to ensure clamping initiates reliably across the full -65 °C to +185 °C range. This behavior is fully characterized in the 5KASMC43AHM3_A/H datasheet and enables predictable margining without derating VWM.
5KASMC43AHM3_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:
- Active
- 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):
- 72A
- 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 (SMC)
5KASMC43AHM3_A/H FAQ
1.How can I place an order for 5KASMC43AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC43AHM3_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 5KASMC43AHM3_A/H reliable?
The price and inventory of 5KASMC43AHM3_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 5KASMC43AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 5KASMC43AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC43AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC43AHM3_A/H?
5KASMC43AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC43AHM3_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 5KASMC43AHM3_A/H?
For technical support, including 5KASMC43AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC43AHM3_A/H requirements.
6.How does Aetrix verify that 5KASMC43AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 5KASMC43AHM3_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 5KASMC43AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 5KASMC43AHM3_A/H?
All 5KASMC43AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC43AHM3_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 5KASMC43AHM3_A/H part is unused and in its original packaging.
Return procedure for 5KASMC43AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KASMC43AHM3_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 …
