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Vishay General Semiconductor - Diodes Division SMBJ70AHM3/H
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- Part No.:
- SMBJ70AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ70AHM3/H.pdf
- Description:
- TVS DIODE 70VWM 113VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,497
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Product details
Overview
SMBJ70AHM3/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 70 V standoff voltage (VWM), 77.8–86.0 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), 5.3 A peak pulse current (IPPM), and 113 V maximum clamping voltage (VC) - deployed in industrial motor drives to protect MOSFET gate drivers from inductive switching surges.
For engineers reviewing the SMBJ70AHM3/H datasheet, SMBJ70AHM3/H pinout, SMBJ70AHM3/H application, or SMBJ70AHM3/H equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, halogen-free RoHS compliance, and direct replacement guidance for automotive-grade surge protection design.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction for stable avalanche response. Its 100 °C/W junction-to-ambient thermal resistance (RθJA) and 20 °C/W junction-to-lead (RθJL) define PCB pad layout requirements for sustained 5.0 W power dissipation at 50 °C ambient.
The SMBJ70AHM3/H delivers sub-nanosecond response to transients and maintains low incremental surge resistance under repetitive 0.01% duty cycle pulses. It meets UL 497B recognition (QVGQ2 file E136766) and J-STD-020 MSL Level 1 moisture sensitivity - enabling reflow compatibility up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets upper limit for DC bias on protected line. |
| VBR (min/max) | 77.8 V / 86.0 V at 1 mA - Confirmed breakdown range ensures reliable triggering above system overvoltage thresholds. |
| VC @ IPPM | 113 V - Clamped voltage during 5.3 A 10/1000 µs surge; defines worst-case stress on downstream ICs. |
| PPPM | 600 W - Peak pulse power handling per single transient; validated with 0.01% duty cycle repetition. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| Package | SMB (DO-214AA) - 5.59 mm × 4.06 mm footprint with 2.20 mm height; compatible with standard SMT pick-and-place. |
| Compliance | AEC-Q101 qualified, halogen-free, RoHS-compliant (HM3 suffix); certified per UL 497B (E136766). |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode identified by band marking on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; completes clamping path during positive transients. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 70 V rail); avalanche conduction initiates when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation. |
| 113 V clamping voltage at 5.3 A | Limits voltage overshoot across 70 V-rated power stages, preserving MOSFET VDS margin. |
| AEC-Q101 qualification (HM3 suffix) | Validated for automotive powertrain and body electronics requiring zero-failure reliability over 15-year life. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing. |
| MSL Level 1 (260 °C peak) | Supports single-reflow assembly without baking; eliminates moisture-related popcorning risk. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate driver ICs against flyback voltage spikes from 24 V solenoid coils. IC Role / Device Role / Timing Role: Unidirectional TVS clamps negative-going transients at driver output, preventing latch-up or oxide damage. Use Value: 113 V clamping ensures gate-source voltage stays below 20 V absolute maximum rating of common 24 V gate drivers. |
Use Scenario: Surge suppression on LIN bus lines exposed to load dump events in door module ECUs. IC Role / Device Role / Timing Role: Fast-response clamping element absorbing 10/1000 µs transients induced by relay switching. Use Value: AEC-Q101 qualification guarantees performance stability across -40 °C to +125 °C ambient with no parameter drift. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
|
Use Scenario: Input-stage protection for 70 V intermediate bus converters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Primary transient shunt on DC input rail, diverting energy before it reaches primary-side controller. Use Value: 600 W pulse rating sustains repeated 1 kV/0.5 Ω surges per IEC 61000-4-5 without parametric shift. |
Use Scenario: Overvoltage safeguard for microcontroller I/O pins connected to external sensors in washing machine control units. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional clamp limiting ESD and switching noise on 5 V logic lines. Use Value: 1 µA max leakage at 70 V ensures negligible standby current impact on battery-backed real-time clocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70AHE3/H | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification. | Suitable for commercial-grade industrial controls where automotive reliability is not required. | Select when cost sensitivity outweighs halogen-free or automotive qualification needs. |
| SMCJ70A-HM3 | Same VWM/VBR but in larger SMC (DO-214AB) package; 1500 W PPPM. | Used where higher surge energy absorption is needed, e.g., AC input front-ends. | Choose only if PCB layout allows 7.11 mm × 6.22 mm footprint and 1500 W capability is mandatory. |
Compared with SMBJ70AHM3/H, SMBJ70AHE3/H omits halogen-free and AEC-Q101 compliance - reducing cost but limiting automotive use; SMCJ70A-HM3 offers higher surge capacity in a larger package, requiring layout revision and offering no benefit for 600 W-class protection.
Availability
SMBJ70AHM3/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 full traceability and long-term lifecycle support.
Supply support for SMBJ70AHM3/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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with global manufacturing and testing facilities focused on high-reliability passive protection components.
The SMBJ series targets board-level transient suppression in automotive, industrial, and telecom systems - engineered for fast clamping, repeatable surge endurance, and seamless integration into automated SMT lines.
FAQ
What is the maximum clamping voltage of SMBJ70AHM3/H at its rated peak pulse current?
The SMBJ70AHM3/H has a maximum clamping voltage (VC) of 113 V when subjected to its rated peak pulse current (IPPM) of 5.3 A under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ70AHM3/H maintains this clamping performance across its full operating temperature range of -55 °C to +150 °C.
Is SMBJ70AHM3/H qualified for automotive applications?
Yes, SMBJ70AHM3/H is AEC-Q101 qualified - confirmed by Vishay's documentation and ordering code suffix "HM3", which denotes halogen-free, RoHS-compliant, and automotive-grade qualification. This certification covers stress tests including HTGB, HTRB, TCT, and mechanical shock, validating SMBJ70AHM3/H for use in body electronics, lighting, and power distribution modules where zero field failures are mandated.
What does the "HM3" suffix indicate in SMBJ70AHM3/H?
The "HM3" suffix in SMBJ70AHM3/H specifies halogen-free, RoHS-compliant construction with AEC-Q101 qualification - distinct from "HE3" (RoHS + AEC-Q101 but not halogen-free) and "E3/M3" (commercial grade only). This suffix directly maps to Vishay's material categorization per doc#99912 and ensures compliance with automotive OEM substance restrictions such as GMW3172 and Ford WSS-M99P9999-A1.
Can SMBJ70AHM3/H replace SMBJ70AHE3/H in an existing design?
SMBJ70AHM3/H is a drop-in replacement for SMBJ70AHE3/H in terms of electrical specs, package dimensions, and soldering profile - both use SMB (DO-214AA) and share identical VWM, VBR, VC, and PPPM. However, SMBJ70AHM3/H adds halogen-free content and AEC-Q101 qualification, making it suitable for upgraded automotive or green-compliance requirements without PCB or layout changes.
What is the thermal resistance of SMBJ70AHM3/H, and how does it affect PCB layout?
SMBJ70AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W. To sustain its 5.0 W power dissipation rating at 50 °C ambient, the PCB must provide minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal - as specified in Vishay's datasheet figure notes. Reducing pad area increases junction temperature and requires derating per fig. 2.
SMBJ70AHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 5.3A
- 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 (SMBJ)
SMBJ70AHM3/H FAQ
1.How can I place an order for SMBJ70AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ70AHM3/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 SMBJ70AHM3/H reliable?
The price and inventory of SMBJ70AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ70AHM3/H is usually 5 days.
3.What payment methods are accepted for SMBJ70AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ70AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ70AHM3/H?
SMBJ70AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ70AHM3/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 SMBJ70AHM3/H?
For technical support, including SMBJ70AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ70AHM3/H requirements.
6.How does Aetrix verify that SMBJ70AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ70AHM3/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 SMBJ70AHM3/H meets industry standards.
7.What is the process for return or replacement of SMBJ70AHM3/H?
All SMBJ70AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ70AHM3/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 SMBJ70AHM3/H part is unused and in its original packaging.
Return procedure for SMBJ70AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ70AHM3/H Tags
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