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Vishay General Semiconductor - Diodes Division SMBJ64AHM3_A/H
- Part No.:
- SMBJ64AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64AHM3_A/H.pdf
- Description:
- TVS DIODE 64VWM 103VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,095
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Product details
Overview
SMBJ64AHM3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed to protect sensitive electronics against ESD, lightning-induced surges, and inductive switching transients. It features a 64 V stand-off voltage (VWM), 71.1–78.6 V breakdown voltage (VBR at 1 mA), 103 V maximum clamping voltage (VC) at 5.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBJ64AHM3_A/H datasheet, SMBJ64AHM3_A/H pinout, SMBJ64AHM3_A/H application, or SMBJ64AHM3_A/H equivalent, this device is selected for robust overvoltage protection in DC power rails, I/O interfaces, and MOSFET gate drivers where fast response (<1 ps), low clamping ratio (VC/VBR ≈ 1.37), and AEC-Q101 qualification are critical design requirements.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, leveraging a glass-passivated silicon junction to deliver sub-nanosecond response time and stable breakdown behavior under repetitive surge conditions. Its thermal resistance (RθJA = 100 °C/W) and junction temperature range (–55 °C to +150 °C) support operation in automotive and industrial environments without active cooling.
The SMBJ64AHM3_A/H uses a cathode-band polarity marking and is halogen-free, RoHS-compliant, and qualified to AEC-Q101 - confirming suitability for automotive-grade power supply and sensor interface protection. Its 1.0 µA max reverse leakage at VWM ensures minimal standby power loss in battery-critical systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 64 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 71.1–78.6 V at 1 mA - Confirmed avalanche onset range; defines minimum overvoltage triggering point. |
| VC (Clamping Voltage) | 103 V at 5.8 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines safe IC withstand level. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability per transient; enables protection against IEC 61000-4-5 Level 4 surges. |
| IPPM (Peak Pulse Current) | 5.8 A - Maximum non-repetitive surge current handled; correlates directly with PCB trace and fuse sizing. |
| TJ max. | +150 °C - Maximum junction temperature; supports under-hood automotive use without derating at 85 °C ambient. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.21 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode-band marked end. Matte tin-plated leads, MSL Level 1 (260 °C reflow peak), J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or return path; forms current loop during clamping event. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 64 V rail); conducts avalanche current when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity up to 4 kV (line-to-earth) in compact layout. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive powertrain and body electronics; includes stress testing across temperature, humidity, and lifetime cycles. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-20; supports green manufacturing and end-of-life recycling. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin for 3.3 V/5 V logic. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C), eliminating bake requirements pre-assembly. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V/24 V battery-supplied ECUs exposed to load-dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and DC-DC converter input stage. Use Value: Limits voltage to ≤103 V during 300 ms load-dump events, preventing damage to downstream LDOs and microcontrollers. |
Use Scenario: 4–20 mA current-loop sensors in factory automation subject to cable ESD and field wiring surges. IC Role / Device Role / Timing Role: Reverse-polarity and overvoltage protector on analog input side of signal conditioner IC. Use Value: Clamps induced transients within 1 ns while maintaining <1.0 µA leakage at 24 V, preserving loop accuracy. |
| DC Motor Drive Gate Protection | Telecom Power Input Stage |
|
Use Scenario: N-channel MOSFET half-bridge drivers in BLDC motor controllers experiencing inductive kickback. IC Role / Device Role / Timing Role: Snubber-connected TVS across high-side gate-source or low-side source-ground. Use Value: Absorbs 600 W spikes from 100 µH inductors switching at 20 kHz, preventing gate oxide rupture. |
Use Scenario: -48 V telecom power entry module subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Primary unidirectional clamp on rectified DC bus prior to bulk capacitor and POL converters. Use Value: Withstands repeated 10/1000 µs surges up to 5.8 A without parameter drift, ensuring >10-year field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ64AHE3_A/H | Same electrical specs, but RoHS-compliant commercial grade (not AEC-Q101 qualified); E3 suffix, no halogen restriction. | Lacks automotive qualification; suitable for industrial/commercial power supplies where AEC-Q101 is not mandated. | Select SMBJ64AHE3_A/H for cost-sensitive non-automotive designs requiring identical clamping performance. |
| SMAJ64A-M3/5B | Lower peak pulse power (400 W), smaller SMA package (DO-214AC), higher RθJA (140 °C/W), same VWM/VC ratings. | Reduced surge handling margin; limited to lower-energy transients or space-constrained consumer PCBs. | Choose SMAJ64A-M3/5B only when board area is critical and surge threat level is ≤IEC 61000-4-5 Level 2. |
Compared with SMBJ64AHE3_A/H, the SMBJ64AHM3_A/H adds AEC-Q101 qualification and halogen-free construction for automotive use; versus SMAJ64A-M3/5B, it delivers 50 % higher surge power handling and superior thermal dissipation in the same mounting footprint.
Availability
SMBJ64AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, and telecom power entry modules requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for SMBJ64AHM3_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 SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where robustness, consistency, and qualification rigor are mandatory.
FAQ
What is the clamping voltage of SMBJ64AHM3_A/H at its rated peak pulse current?
The SMBJ64AHM3_A/H has a maximum clamping voltage (VC) of 103 V at 5.8 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ64AHM3_A/H maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C).
Is SMBJ64AHM3_A/H suitable for automotive applications?
Yes, SMBJ64AHM3_A/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials - meeting stringent automotive reliability requirements for powertrain, body control, and ADAS subsystems. Its thermal stability, surge endurance, and process-controlled avalanche characteristics make SMBJ64AHM3_A/H appropriate for under-hood and chassis-mounted electronics where ambient temperatures exceed 105 °C.
What does the "HM3" suffix indicate in SMBJ64AHM3_A/H?
The "HM3" suffix in SMBJ64AHM3_A/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., E3) and confirms compliance with automotive environmental standards, including JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow capability. The "_A/H" indicates packaging in 7″ tape-and-reel (H) with revision A.
How does SMBJ64AHM3_A/H compare to bidirectional TVS diodes like SMBJ64CA?
SMBJ64AHM3_A/H is unidirectional and intended for DC line protection with defined polarity; SMBJ64CA is bidirectional and used in AC or floating signal paths. The SMBJ64AHM3_A/H offers lower leakage (<1.0 µA at 64 V) and tighter VBR tolerance than SMBJ64CA, but cannot suppress reverse-polarity faults. Use SMBJ64AHM3_A/H where circuit topology enforces known polarity and lowest possible standby loss is required.
What is the thermal resistance of SMBJ64AHM3_A/H, and how does it affect PCB layout?
SMBJ64AHM3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperature under sustained surge duty, PCB layout must provide adequate copper area and avoid thermal bottlenecks. Reducing pad size or omitting thermal vias increases RθJA, potentially derating SMBJ64AHM3_A/H's surge capability by up to 30 % at elevated ambient temperatures.
SMBJ64AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 64V
- Voltage - Breakdown (Min):
- 71.1V
- Voltage - Clamping (Max) @ Ipp:
- 103V
- Current - Peak Pulse (10/1000µs):
- 5.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ64AHM3_A/H FAQ
1.How can I place an order for SMBJ64AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64AHM3_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 SMBJ64AHM3_A/H reliable?
The price and inventory of SMBJ64AHM3_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 SMBJ64AHM3_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ64AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64AHM3_A/H?
SMBJ64AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64AHM3_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 SMBJ64AHM3_A/H?
For technical support, including SMBJ64AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64AHM3_A/H requirements.
6.How does Aetrix verify that SMBJ64AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ64AHM3_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 SMBJ64AHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ64AHM3_A/H?
All SMBJ64AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64AHM3_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 SMBJ64AHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ64AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64AHM3_A/H Tags
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