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Vishay General Semiconductor - Diodes Division SMBJ64AHM3_B/H
- Part No.:
- SMBJ64AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ64AHM3_B/H.pdf
- Description:
- 600W,64V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,529
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Product details
Overview
SMBJ64AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 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 - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ64AHM3_B/H datasheet, SMBJ64AHM3_B/H pinout, SMBJ64AHM3_B/H application, or SMBJ64AHM3_B/H equivalent, key selection criteria include unidirectional polarity, 1.0 µA max reverse leakage at VWM, -55 °C to +150 °C operating junction temperature, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by overvoltage events such as inductive load switching or ESD. Its glass-passivated junction ensures stable breakdown behavior, while low incremental surge resistance enables rapid energy absorption without thermal runaway under repetitive 10/1000 µs pulses at 0.01% duty cycle.
The SMBJ64AHM3_B/H is rated for 100 A non-repetitive forward surge current (IFSM) and exhibits a typical thermal resistance of 20 °C/W from junction to lead, supporting reliable operation when mounted on 5.0 mm × 5.0 mm copper pads. Its MSL Level 1 moisture sensitivity rating allows uncompromised reflow soldering at peak temperatures up to 260 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 64 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 48 V DC bus protection. |
| VBR min/max | 71.1 V / 78.6 V at IT = 1 mA - Confirmed breakdown range ensures predictable turn-on during transients without premature conduction. |
| VC @ IPPM | 103 V at 5.8 A - Clamped voltage level limits downstream component stress during 600 W surge events. |
| IPPM | 5.8 A - Peak pulse current capability with 10/1000 µs waveform; determines minimum trace width and PCB layout robustness. |
| PPPM | 600 W - Peak pulse power handling capacity; validates suitability for automotive load-dump and industrial motor drive protection. |
| TJ max | +150 °C - Maximum junction temperature supports operation in enclosed enclosures or high-ambient environments. |
| Leakage @ VWM | 1.0 µA - Ultra-low reverse leakage preserves efficiency in always-on circuits like battery-backed sensors or standby power rails. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode indicated by band marking on cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or low-side return path; enables clamping action when cathode side exceeds VWM. |
| Cathode | Current exit point during forward conduction; marked with band | Connected to protected line (e.g., 48 V rail); defines polarity-sensitive placement in unidirectional protection schemes. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges without derating in standard layouts. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage overshoot during fast transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs. |
| MSL Level 1 rating | Eliminates bake-out requirement prior to reflow, streamlining SMT assembly for high-volume industrial production. |
| AEC-Q101 qualified variant available | HM3 suffix indicates qualification for automotive-grade reliability - validated for temperature cycling, HTRB, and ESD performance. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal stress and humidity exposure in harsh environments. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O lines against inductive kickback from solenoid valves and relay coils. IC Role / Device Role / Timing Role: Unidirectional clamping element placed between 12 V supply rail and ground, absorbing >100 V spikes within nanoseconds. Use Value: Prevents false resets and latch-up in MCUs by limiting transient voltage to ≤103 V, maintaining system uptime in factory automation systems. |
Use Scenario: Safeguarding LIN bus transceivers and sensor inputs in door modules exposed to load dump and jump-start conditions. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across power input pins of LIN transceiver ICs, activated only during overvoltage events. Use Value: Maintains signal integrity below 103 V clamping threshold while drawing <1 µA leakage, preserving battery life in always-on vehicle subsystems. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
|
Use Scenario: Secondary-side overvoltage suppression on 48 V PoE-powered equipment after DC-DC conversion stages. IC Role / Device Role / Timing Role: Fast-response shunt protector on output rail, triggered within <1 ns to clamp surges exceeding 64 V. Use Value: Enables compliance with IEC 61000-4-5 Level 4 (4 kV) immunity testing without additional series impedance or filtering. |
Use Scenario: Input protection for microcontroller ADC inputs monitoring thermistor or current-sense signals in washing machine control boards. IC Role / Device Role / Timing Role: Low-leakage (1 µA) standoff device placed before precision analog front-end, preventing ESD-induced offset drift. Use Value: Preserves measurement accuracy by limiting transient-induced error to <0.5% full-scale while surviving >30 kV HBM ESD 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 |
|---|---|---|---|
| SMBJ64AHE3_B/H | RoHS-compliant but not halogen-free; same electrical specs and SMB package. | Lacks halogen-free certification required for certain EU industrial equipment standards (e.g., EN 61000-6-4 Annex ZA). | Select when halogen content is not regulated in target market or cost sensitivity outweighs material compliance requirements. |
| SMBJ64A-M3/52 | Same halogen-free composition, but supplied in 7″ tape-and-reel (750 pcs) vs. B/H's 7″ reel with different packaging code. | No functional difference; differs only in packaging logistics and traceability labeling per Vishay ordering nomenclature. | Choose based on procurement channel preference and inventory management compatibility with existing MRP systems. |
Compared with SMBJ64AHM3_B/H, the HE3 variant trades halogen-free status for broader commercial availability, while the M3/52 offers identical performance in a legacy packaging format - making HM3 the optimal choice for new designs requiring full environmental compliance and AEC-Q101 readiness.
Availability
SMBJ64AHM3_B/H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply with halogen-free and AEC-Q101-aligned specifications.
Supply support for SMBJ64AHM3_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, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMBJ series was developed specifically for high-energy transient suppression in space-constrained surface-mount applications, targeting industrial, automotive, and telecom markets where robustness and repeatable clamping performance are critical.
FAQ
What is the polarity configuration of SMBJ64AHM3_B/H?
The SMBJ64AHM3_B/H is a unidirectional transient voltage suppressor diode. Its cathode is marked with a band on the SMB (DO-214AA) package body, and it conducts only when the cathode voltage exceeds the anode by more than the breakdown threshold. This polarity must be observed during PCB layout to ensure correct clamping direction on positive-rail protection applications.
Does SMBJ64AHM3_B/H meet automotive qualification standards?
Yes, the HM3 suffix in SMBJ64AHM3_B/H denotes halogen-free, RoHS-compliant construction and AEC-Q101 qualification. It has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per AEC-Q101 Rev D, making it suitable for automotive body electronics and powertrain-adjacent modules.
What is the maximum clamping voltage for SMBJ64AHM3_B/H under surge conditions?
The SMBJ64AHM3_B/H has a maximum clamping voltage (VC) of 103 V at 5.8 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed across temperature and lifetime, ensuring downstream components see no more than 103 V during standardized surge events.
Can SMBJ64AHM3_B/H replace SMBJ64A-E3/52 in existing designs?
Yes, SMBJ64AHM3_B/H is a direct functional replacement for SMBJ64A-E3/52 in most cases, with identical electrical parameters and SMB package dimensions. The key differences are halogen-free construction and updated MSL Level 1 compliance - no PCB changes are required, but requalification may be needed for halogen-free compliance documentation.
What is the thermal resistance specification for SMBJ64AHM3_B/H?
The SMBJ64AHM3_B/H has a typical thermal resistance of 20 °C/W from junction to lead (RθJL) and 100 °C/W from junction to ambient (RθJA) on standard 0.2″ × 0.2″ copper pads. These values inform heatsinking decisions and derating curves for continuous power dissipation above 25 °C ambient.
SMBJ64AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Active
- 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_B/H FAQ
1.How can I place an order for SMBJ64AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ64AHM3_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 SMBJ64AHM3_B/H reliable?
The price and inventory of SMBJ64AHM3_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 SMBJ64AHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ64AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ64AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ64AHM3_B/H?
SMBJ64AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ64AHM3_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 SMBJ64AHM3_B/H?
For technical support, including SMBJ64AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ64AHM3_B/H requirements.
6.How does Aetrix verify that SMBJ64AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ64AHM3_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 SMBJ64AHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ64AHM3_B/H?
All SMBJ64AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ64AHM3_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 SMBJ64AHM3_B/H part is unused and in its original packaging.
Return procedure for SMBJ64AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ64AHM3_B/H Tags
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