My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 5KASMC33AHM3_A/H
- Part No.:
- 5KASMC33AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
5KASMC33AHM3_A/H.pdf
- Description:
- TVS DIODE 33VWM 53.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,600
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
5KASMC33AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, rated for 5000 W peak pulse power (10/1000 μs), 33 V stand-off voltage (VWM), 38.7 V nominal breakdown voltage (VBR), and 185 °C maximum junction temperature - deployed for automotive-grade overvoltage protection of sensor signal lines and MOSFET gates.
For engineers reviewing the 5KASMC33AHM3_A/H datasheet, 5KASMC33AHM3_A/H pinout, 5KASMC33AHM3_A/H application, or 5KASMC33AHM3_A/H equivalent, key selection criteria include clamping voltage (VC = 93.8 V at IPPM), low incremental surge resistance, AEC-Q101 qualification, MSL Level 1 rating, and halogen-free RoHS-compliant construction.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under repetitive transient stress and high-temperature operation up to TJ = 185 °C. Its unidirectional polarity and 10/1000 μs waveform response enable robust protection against inductive load switching surges in automotive ECUs and industrial motor drives.
The device exhibits 0.091 %/°C temperature coefficient of VBR and 20.8 °C/W junction-to-mount thermal resistance when soldered to a PCB with minimum recommended pad layout. It meets JESD201 Class 2 whisker test requirements and UL 94 V-0 flammability standard for molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (nom) | 38.7 V at 1 mA - precise breakdown threshold ensuring predictable turn-on during transients |
| VC @ IPPM | 93.8 V - clamping voltage limiting downstream IC stress during 5000 W surge events |
| PPPM (10/1000 μs) | 5000 W - peak pulse power handling capability for automotive load-dump and ISO 7637-2 compliance |
| TJ max | +185 °C - enables operation in under-hood automotive environments without derating |
| IR @ VWM | 2.0 μA - ultra-low leakage preserving signal integrity in high-impedance sensor interfaces |
| AEC-Q101 | Qualified - certified for automotive electronics per stress-test requirements including HTGB, HTRB, and TCT |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, cathode indicated by molded band; dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or common return path; defines current flow direction during clamping |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., sensor output); carries full surge current into ground via anode |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design ensures stable VBR and low IR drift over lifetime and temperature |
| Peak pulse power | 5000 W (10/1000 μs) supports ISO 16750-2 load-dump immunity without external series impedance |
| Thermal reliability | RθJM = 20.8 °C/W enables direct PCB mounting without heatsink for sustained 6.5 W dissipation at TM = 50 °C |
| Automotive compliance | AEC-Q101 qualified + MSL Level 1 + JESD201 Class 2 whisker resistance ensures long-term field reliability |
| Environmental compliance | Halogen-free, RoHS-compliant, UL 94 V-0 molding compound meets automotive material categorization standards |
Applications
| Automotive Sensor Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to alternator load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between sensor output and ECU input to limit transient voltage to safe levels. Use Value: 93.8 V clamping voltage prevents damage to 3.3 V or 5 V ADC inputs while maintaining <2.0 μA leakage at 33 V bias. |
Use Scenario: Safeguarding gate drivers and IGBT/MOSFET gates in variable-frequency drives subjected to Miller-induced voltage spikes and inductive kickback. IC Role / Device Role / Timing Role: Fast-response TVS placed across gate-source terminals to suppress dv/dt-induced false turn-on and gate oxide overstress. Use Value: 185 °C junction rating allows placement near hot power stages; 0.091 %/°C VBR tempco ensures stable clamping across wide ambient ranges. |
| Telecom Line Interface Protection | Computer Power Rail Surge Suppression |
Use Scenario: Shielding RS-485/RS-232 transceivers and Ethernet PHYs from lightning-induced surges on outdoor cabling and backplane traces. IC Role / Device Role / Timing Role: Primary-level TVS on differential data lines, coordinated with secondary GDT or polymer PTC devices. Use Value: 5000 W peak power rating handles IEC 61000-4-5 combination wave (1.2/50 μs + 8/20 μs) without degradation after repeated strikes. |
Use Scenario: Guarding 12 V and 24 V DC input rails in embedded computing systems against ESD and power supply transients during hot-plug events. IC Role / Device Role / Timing Role: Standoff-rated TVS on main power entry point upstream of DC-DC converters and LDOs. Use Value: 33 V VWM matches nominal rail voltage; 93.8 V VC ensures downstream regulators remain within absolute maximum ratings during surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/5A (Vishay) | Lower PPPM (400 W), SMA package (smaller footprint), same VWM/VBR range, non-AEC-Q101 | Consumer/industrial board space-constrained designs where automotive qualification is not required | Select 5KASMC33AHM3_A/H for AEC-Q101 compliance and 12.5× higher surge power; choose SMAJ33A-E3/5A only if PCB area is critical and qualification is waived |
| SMCJ33A (Littelfuse) | Same SMC package, 5000 W rating, but VBR min/max tighter (36.7–40.6 V vs. 36.7–40.6 V), no explicit JESD201 Class 2 whisker data published | Drop-in replacement in non-whisker-sensitive industrial applications; requires validation for automotive under-hood use | 5KASMC33AHM3_A/H offers verified JESD201 Class 2 whisker resistance and documented MSL Level 1 reflow profile - preferred for automotive production |
Compared with SMAJ33A-E3/5A and SMCJ33A, the 5KASMC33AHM3_A/H delivers guaranteed AEC-Q101 qualification, JESD201 Class 2 whisker resistance, and identical electrical specs in the same SMC package - making it the sole choice for automotive Tier-1 production requiring traceable reliability evidence.
Availability
5KASMC33AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial motor drive gate safeguarding, and telecom line interface surge suppression requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for 5KASMC33AHM3_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 high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The 5KASMC33AHM3_A/H belongs to Vishay's PAR® family of high-power TVS diodes, engineered specifically for automotive-grade transient suppression in harsh-temperature environments with zero compromise on clamping consistency or long-term stability.
FAQ
What is the clamping voltage of the 5KASMC33AHM3_A/H at its rated peak pulse current?
The 5KASMC33AHM3_A/H has a maximum clamping voltage (VC) of 93.8 V at its peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per Figure 1 in the official Vishay datasheet (Document Number: 89432) and ensures protected circuits remain within safe voltage limits during high-energy transients such as automotive load dump.
Is the 5KASMC33AHM3_A/H qualified for automotive applications?
Yes, the 5KASMC33AHM3_A/H is AEC-Q101 qualified, explicitly stated in the Vishay datasheet revision dated 19-Jan-2024. It undergoes stress testing including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT) to meet automotive reliability requirements - making it suitable for under-hood and ECU applications.
What does the "HM3_A/H" suffix indicate in 5KASMC33AHM3_A/H?
The "HM3_A/H" suffix denotes the packaging and revision code: HM3 indicates halogen-free, RoHS-compliant, AEC-Q101-qualified construction; "A" is the revision level; "H" specifies the preferred package code for 7-inch tape-and-reel delivery with 850 units per reel - confirmed in the Ordering Information table of Document Number 89432.
Does the 5KASMC33AHM3_A/H have bidirectional polarity?
No, the 5KASMC33AHM3_A/H is unidirectional only, as clearly specified in the Features section of the Vishay datasheet. It features a cathode band marking and is designed to clamp positive transients relative to ground - bidirectional variants (e.g., 5KASMC33CA) are separate part numbers not applicable to this device.
What is the thermal resistance from junction to mount for the 5KASMC33AHM3_A/H?
The 5KASMC33AHM3_A/H has a typical junction-to-mount thermal resistance (RθJM) of 20.8 °C/W when mounted on an infinite heatsink, per the Thermal Characteristics table in the Vishay datasheet. This enables effective heat dissipation in high-power surge events and supports continuous operation at elevated ambient temperatures.
5KASMC33AHM3_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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 53.3V
- 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)
5KASMC33AHM3_A/H FAQ
1.How can I place an order for 5KASMC33AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KASMC33AHM3_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 5KASMC33AHM3_A/H reliable?
The price and inventory of 5KASMC33AHM3_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 5KASMC33AHM3_A/H is usually 5 days.
3.What payment methods are accepted for 5KASMC33AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KASMC33AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KASMC33AHM3_A/H?
5KASMC33AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KASMC33AHM3_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 5KASMC33AHM3_A/H?
For technical support, including 5KASMC33AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KASMC33AHM3_A/H requirements.
6.How does Aetrix verify that 5KASMC33AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 5KASMC33AHM3_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 5KASMC33AHM3_A/H meets industry standards.
7.What is the process for return or replacement of 5KASMC33AHM3_A/H?
All 5KASMC33AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 5KASMC33AHM3_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 5KASMC33AHM3_A/H part is unused and in its original packaging.
Return procedure for 5KASMC33AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KASMC33AHM3_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 …
