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Vishay General Semiconductor - Diodes Division SMBG70A-E3/52
- Part No.:
- SMBG70A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG70A-E3/52.pdf
- Description:
- TVS DIODE 70VWM 113VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,353
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Product details
Overview
SMBG70A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMBG (DO-215AA) package, rated for 70 V stand-off voltage, 77.8–86.0 V breakdown at 1 mA, 113 V clamping voltage at 5.3 A peak pulse current, and 600 W peak pulse power with 10/1000 μs waveform - deployed for overvoltage protection of automotive power rails and industrial sensor interfaces.
For engineers reviewing the SMBG70A-E3/52 datasheet, SMBG70A-E3/52 pinout, SMBG70A-E3/52 application, or SMBG70A-E3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that transitions from high-impedance to low-impedance state within picoseconds upon detecting a transient exceeding its breakdown voltage. Its glass-passivated junction ensures stable leakage performance (<1.0 μA at 70 V) and robust ESD immunity.
The SMBG70A-E3/52 delivers 600 W peak pulse power handling under 10/1000 μs waveform with derating above 25 °C, supported by thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), enabling reliable operation in automotive under-hood environments up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR @ IT = 1 mA | 77.8–86.0 V - guaranteed breakdown range defining turn-on threshold under standardized test current |
| VC @ IPPM = 5.3 A | 113 V - maximum clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 600 W - peak transient power dissipation capability without failure under defined waveform |
| IFSM | 100 A - non-repetitive forward surge rating (8.3 ms half-sine), supporting load-dump immunity |
| TJ max | +150 °C - maximum junction temperature enabling use in under-hood automotive modules |
| Package | SMBG (DO-215AA) - low-profile surface-mount outline with 0.235–0.255 inch body length and matte tin-plated leads |
Pinout & Package
SMBG70A-E3/52 uses the SMBG (DO-215AA) package: a gull-wing surface-mount outline with cathode band marking, 0.235–0.255 inch length, 0.130–0.155 inch width, and 0.075–0.095 inch height. Terminals are matte tin-plated and solderable per J-STD-002/JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | Connected to system ground or low-side reference in unidirectional protection configuration |
| Cathode | Current exit terminal in forward bias; marked with band | Connected to protected line (e.g., 12 V rail or CAN-H) to clamp transients toward ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress requirements |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and ISO 16750-2 load-dump surges when properly mounted |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., inductive switch-off) |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT reflow profiles without moisture sensitivity concerns |
| Glass passivated junction | Ensures stable leakage current (<1.0 μA at VWM) and long-term parameter stability across temperature and humidity |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 16750-2) and alternator switching transients. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between power rail and chassis ground to limit voltage excursion to ≤113 V. Use Value: Prevents damage to MCU power supplies and analog front-ends by clamping transients within safe margin below 120 V absolute maximum ratings. | Use Scenario: Safeguarding RS-485 transceivers and analog sensor outputs (e.g., pressure, temperature) from ESD and cable-induced surges. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS connected between signal line and local ground to suppress ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity with <10 pF junction capacitance at zero bias while meeting AEC-Q101 stress requirements for harsh environments. |
| Consumer Power Adapter Input Protection | Telecom DC Power Feed Protection |
Use Scenario: Shielding AC/DC adapter primary-side controllers and rectifiers from lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Primary-side unidirectional TVS placed across bridge rectifier output to clamp differential-mode transients. Use Value: Enables compliance with UL 1449 Type 4 SPD requirements using compact SMBG footprint and 600 W surge rating. | Use Scenario: Protecting PoE-powered devices (e.g., IP cameras, wireless APs) from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Unidirectional TVS installed on each DC pair (spare pairs or data pairs) referenced to common ground plane. Use Value: Provides coordinated clamping with upstream PoE PSE protection, ensuring <113 V clamping limits remain within IEEE 802.3af/at/ bt withstand thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70A-E3/52 | Same VWM (70 V), but lower PPPM (600 W vs. SMBJ's 600 W), identical SMB package, same AEC-Q101 qualification | No functional difference; SMBJ series has identical electrical specs but different mechanical outline (DO-214AA vs. DO-215AA) | Select SMBG70A-E3/52 for tighter board space (smaller body width) and higher thermal resistance tolerance in constrained layouts. |
| SMCJ70A-E3/52 | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VWM/VC, AEC-Q101 qualified | Used where higher single-pulse energy absorption is required (e.g., heavy-duty industrial motor drives) | Choose SMBG70A-E3/52 when PCB real estate is limited and 600 W suffices - avoids unnecessary board area and cost of SMC footprint. |
Compared with SMBJ70A-E3/52 and SMCJ70A-E3/52, SMBG70A-E3/52 offers identical clamping performance in a smaller DO-215AA outline with optimized thermal path for dense automotive modules, balancing surge robustness, layout efficiency, and qualification rigor.
Availability
SMBG70A-E3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor nodes, and telecom power interface designs requiring stable component supply, AEC-Q101 compliance, and repeatable surge immunity performance.
Supply support for SMBG70A-E3/52 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, power efficiency, and automotive qualification.
The SMBG Transient Voltage Suppressor family targets high-reliability transient protection in space-constrained automotive, industrial, and telecom systems - engineered for fast response, stable clamping, and seamless integration into automated SMT lines.
FAQ
What is the clamping voltage of SMBG70A-E3/52 at its rated peak pulse current?
The SMBG70A-E3/52 has a maximum clamping voltage (VC) of 113 V at 5.3 A peak pulse current (IPPM) under the standard 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 SMBG70A-E3/52 maintains this clamping performance across its qualified operating temperature range.
Is SMBG70A-E3/52 suitable for automotive applications?
Yes, SMBG70A-E3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. It meets requirements for temperature cycling, high-temperature reverse bias, and ESD robustness. Its 150 °C max junction temperature, MSL Level 1 reflow compatibility, and 100 A IFSM rating make SMBG70A-E3/52 appropriate for engine control modules, body electronics, and ADAS power domains.
What does the "-E3/52" suffix indicate in SMBG70A-E3/52?
The "-E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads; "/52" specifies packaging in 7″ diameter plastic tape and reel with 750 units per reel. This ordering code aligns with Vishay's standard industrial release - distinct from HE3 (AEC-Q101 qualified) or M3 (halogen-free) variants. SMBG70A-E3/52 is not AEC-Q101 certified unless ordered as SMBG70AHE3/52.
How does SMBG70A-E3/52 differ from bidirectional TVS diodes like SMBG70CA?
SMBG70A-E3/52 is unidirectional and features a cathode band marking; it conducts only in reverse breakdown to clamp positive transients to ground. In contrast, SMBG70CA is bidirectional with no polarity marking and clamps both polarities symmetrically. SMBG70A-E3/52 is used where DC bias exists (e.g., 12 V rails), while SMBG70CA suits AC-coupled or floating signal lines. Their VBR and VC values differ accordingly.
What is the thermal resistance of SMBG70A-E3/52, and how does it affect layout?
SMBG70A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W when mounted on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repeated surges, PCB layout must provide adequate copper area and minimize trace impedance. SMBG70A-E3/52 benefits from thermal vias under pads if ambient temperatures exceed 85 °C.
SMBG70A-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG70A-E3/52 FAQ
1.How can I place an order for SMBG70A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG70A-E3/52 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 SMBG70A-E3/52 reliable?
The price and inventory of SMBG70A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG70A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG70A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG70A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG70A-E3/52?
SMBG70A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG70A-E3/52 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 SMBG70A-E3/52?
For technical support, including SMBG70A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG70A-E3/52 requirements.
6.How does Aetrix verify that SMBG70A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG70A-E3/52 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 SMBG70A-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG70A-E3/52?
All SMBG70A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG70A-E3/52, 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 SMBG70A-E3/52 part is unused and in its original packaging.
Return procedure for SMBG70A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG70A-E3/52 Tags
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