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Vishay General Semiconductor - Diodes Division SMBG70AHE3/52
- Part No.:
- SMBG70AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG70AHE3/52.pdf
- Description:
- TVS DIODE 70VWM 113VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,382
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Product details
Overview
SMBG70AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 70 V stand-off voltage (VWM), 77.8–86.0 V breakdown voltage (VBR) at 1 mA, 113 V maximum clamping voltage (VC) at 5.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the SMBG70AHE3/52 datasheet, SMBG70AHE3/52 pinout, SMBG70AHE3/52 application, or SMBG70AHE3/52 equivalent, key selection criteria include clamping performance under automotive load-dump transients, AEC-Q101 qualification for automotive use, RoHS compliance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a unidirectional shunt protector, conducting only during reverse-biased overvoltage events while remaining high-impedance under normal 70 V DC operation. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM), and its thermal resistance (RθJA = 100 °C/W) supports reliable operation up to 150 °C junction temperature.
The device meets J-STD-020 MSL Level 1 moisture sensitivity and withstands 100 A non-repetitive forward surge (8.3 ms half-sine), making it suitable for protecting MOSFET gates, sensor interfaces, and automotive ECUs against ISO 7637-2 Pulse 1, 2a, and 5a transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected circuit's nominal DC rail. |
| VBR (min/max) | 77.8 V / 86.0 V at 1 mA - Confirmed breakdown range ensures predictable turn-on margin above VWM with ≤10% tolerance. |
| VC @ IPPM | 113 V at 5.3 A - Clamping voltage under 600 W 10/1000 μs surge defines worst-case overvoltage seen by downstream ICs. |
| PPPM | 600 W - Peak pulse power handling capability validated per Fig. 1 derating curve; enables single-device protection against common automotive transients. |
| IFSM | 100 A - Surge current rating for 8.3 ms half-sine waveform; supports protection against battery disconnect/load dump events. |
| TJ max | +150 °C - Maximum junction temperature rating allows deployment in under-hood automotive environments without thermal derating penalties. |
| AEC-Q101 | Qualified - Certified for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing leadform. Cathode indicated by band; anode is unmarked terminal. Meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts transient energy to ground when reverse voltage exceeds VBR. |
| Anode | Reference/ground return | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device suppression of ISO 7637-2 Pulse 5a (load dump) without cascaded TVS or external limiting resistors. |
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, and UHAST-no additional qualification needed for Tier 1 designs. |
| Glass passivated junction | Ensures stable VBR and low leakage (<1.0 μA) across temperature and lifetime, critical for low-power sensor and MCU I/O protection. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling-reduces manufacturing cost and risk. |
| RoHS-compliant HE3 suffix | Meets EU RoHS Directive 2011/65/EU and Vishay material categorization requirements for industrial and automotive applications. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs (e.g., body control modules) against load dump transients per ISO 7637-2 Pulse 5a (up to 60 V superimposed on 14 V nominal). IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp surges within safe limits for downstream regulators and microcontrollers. Use Value: Limits peak rail voltage to ≤113 V during 600 W transients, preventing damage to 16 V-rated input stages and eliminating need for series impedance. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA transmitter loops) and digital I/O (CAN, LIN) from ESD and inductive switching noise in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) TVS mounted directly at connector entry point to divert fast transients before reaching precision ADCs or transceivers. Use Value: Sub-10 ns response time and 113 V clamping ensure signal integrity is preserved during ±8 kV contact ESD events (IEC 61000-4-2) without latch-up or offset drift. |
| Consumer Power Adapter Input Protection | Telecom DC Feeder Line Protection |
Use Scenario: Securing AC/DC adapter primary-side DC bus (e.g., post-bridge rectifier) against lightning-induced surges and capacitor discharge transients. IC Role / Device Role / Timing Role: Primary-side TVS connected across bulk capacitor to absorb repetitive 10/1000 μs surges up to 600 W without degradation. Use Value: 100 A IFSM rating and 150 °C TJ max allow sustained operation in enclosed, thermally constrained enclosures without thermal runaway. | Use Scenario: Protecting -48 V telecom DC distribution lines feeding remote radio units (RRUs) from induced surges due to nearby lightning strikes. IC Role / Device Role / Timing Role: Unidirectional TVS installed between feed line and ground plane to clamp negative-going transients while blocking normal -48 V bias. Use Value: 70 V VWM provides sufficient margin above -48 V nominal, and 113 V VC ensures downstream DC/DC converters remain within absolute maximum ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70A-E3/52 | Same VWM (70 V), but lower PPPM = 600 W (same), higher VC = 115 V, and no AEC-Q101 qualification. | Not certified for automotive use; suitable for industrial/commercial designs where qualification is not mandated. | Select SMBJ70A-E3/52 only if AEC-Q101 is unnecessary and footprint compatibility with SMBG is confirmed via mechanical review. |
| SMCJ70AHE3/52 | Same VWM/VBR, but larger SMC (DO-214AB) package, higher PPPM = 1500 W, and identical AEC-Q101 qualification. | Requires larger PCB area and different pad layout; used where higher surge immunity (e.g., ISO 16750-2) is required. | Choose SMCJ70AHE3/52 when 1500 W surge rating is mandatory and board space permits the larger SMC footprint. |
Compared with SMBG70AHE3/52, SMBJ70A-E3/52 offers identical electrical specs but lacks automotive qualification and has slightly higher clamping, while SMCJ70AHE3/52 delivers triple the surge power in a larger package-making SMBG70AHE3/52 the optimal balance of AEC-Q101 compliance, 600 W capability, and compact SMBG footprint for space-constrained automotive modules.
Availability
SMBG70AHE3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor nodes, and telecom DC feeder protection requiring stable component supply, AEC-Q101 assurance, and RoHS-compliant sourcing.
Supply support for SMBG70AHE3/52 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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBG-series TRANSZORB® TVS family is engineered for high-reliability transient suppression in automotive, industrial, and telecom infrastructure-designed to meet stringent surge immunity standards while enabling automated SMT assembly and long-term field stability.
FAQ
What is the clamping voltage of SMBG70AHE3/52 under a 600 W transient?
The SMBG70AHE3/52 exhibits a maximum clamping voltage (VC) of 113 V when subjected to its rated 600 W peak pulse power with a 10/1000 μs waveform. This value is measured at 5.3 A peak pulse current (IPPM) and defines the upper voltage limit imposed on protected circuits during standardized surge events-critical for ensuring downstream components like LDOs and MCUs remain within their absolute maximum ratings.
Is SMBG70AHE3/52 qualified for automotive applications?
Yes, SMBG70AHE3/52 is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 88456, Revision: 09-Jan-2024). The HE3 suffix denotes RoHS compliance and AEC-Q101 qualification, validating its suitability for automotive powertrain, body electronics, and ADAS modules where reliability under temperature cycling, humidity, and surge stress is mandatory.
What is the standoff voltage and breakdown range for SMBG70AHE3/52?
The SMBG70AHE3/52 has a reverse stand-off voltage (VWM) of 70 V and a breakdown voltage (VBR) range of 77.8 V to 86.0 V at 1 mA test current. This 10% VBR tolerance ensures consistent turn-on behavior across production lots and guarantees ≥7.8 V design margin between VWM and minimum VBR, preventing false triggering during normal operation.
Does SMBG70AHE3/52 have a bidirectional variant?
No-SMBG70AHE3/52 is strictly unidirectional, as indicated by the "A" suffix (per Vishay's naming convention: "A" = unidirectional, "CA" = bidirectional). For bidirectional protection at 70 V VWM, the correct variant is SMBG70CAHE3/52, which shares the same package and AEC-Q101 qualification but provides symmetrical clamping for AC-coupled or floating signal lines.
What is the thermal resistance and maximum junction temperature of SMBG70AHE3/52?
The SMBG70AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and a maximum operating junction temperature (TJ) of +150 °C. These values are specified with the device mounted on 0.2" × 0.2" copper pads per JEDEC standards, enabling thermal modeling for under-hood automotive deployments and confirming safe operation without forced cooling in most industrial enclosures.
SMBG70AHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG70AHE3/52 FAQ
1.How can I place an order for SMBG70AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG70AHE3/52 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 SMBG70AHE3/52 reliable?
The price and inventory of SMBG70AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG70AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG70AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG70AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG70AHE3/52?
SMBG70AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG70AHE3/52 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 SMBG70AHE3/52?
For technical support, including SMBG70AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG70AHE3/52 requirements.
6.How does Aetrix verify that SMBG70AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG70AHE3/52 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 SMBG70AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG70AHE3/52?
All SMBG70AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG70AHE3/52, 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 SMBG70AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG70AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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