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Vishay General Semiconductor - Diodes Division SMBG15HE3/5B
- Part No.:
- SMBG15HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG15HE3/5B.pdf
- Description:
- TVS DIODE 15VWM 26.9VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,542
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Product details
Overview
SMBG15HE3/5B from Vishay General Semiconductor is a uni-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping inductive switching transients and ESD events on power and signal lines. It features 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), and clamps to ≤24.4 V at 24.6 A peak current - used in automotive power rail protection and industrial sensor interface circuits.
For engineers reviewing the SMBG15HE3/5B datasheet, SMBG15HE3/5B pinout, SMBG15HE3/5B application, or SMBG15HE3/5B equivalent, key selection criteria include its AEC-Q101 qualification, 150 °C junction temperature rating, low clamping ratio (VC/VBR ≈ 1.4), RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device in uni-directional configuration, with cathode-band polarity marking and glass-passivated junction for stable surge response. Its 100 °C/W junction-to-ambient thermal resistance and 20 °C/W junction-to-lead resistance support reliable power dissipation under repetitive 0.01% duty cycle surges.
The SMBG15HE3/5B delivers fast response time (<1 ns), low incremental surge resistance, and meets UL 94 V-0 flammability requirements. It is rated for 100 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits ≤1.0 μA reverse leakage at 15 V, enabling low-power standby integrity in always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (Breakdown Voltage) | 16.7–18.5 V at 1 mA - ensures precise, repeatable turn-on threshold for transient suppression |
| VC (Clamping Voltage) | ≤24.4 V at 24.6 A (10/1000 μs) - limits downstream IC stress during 600 W surge events |
| PPPM (Peak Pulse Power) | 600 W - sustains high-energy transients without failure under standardized waveform |
| TJ max. | +150 °C - supports operation in under-hood automotive environments and industrial enclosures |
| IFSM | 100 A (8.3 ms half-sine) - withstands motor driver kickback and relay coil de-energization surges |
| Leakage (ID at VWM) | ≤1.0 μA - minimizes quiescent current drain in battery-powered sensor nodes |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing leaded case with cathode band marking; dimensions 6.48 mm × 3.94 mm × 2.10 mm (L × W × H); UL 94 V-0 molding compound; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; enables clamping when cathode exceeds VWM + VBR |
| Cathode | High-side connection point | Marked with band; connects to protected line (e.g., 12 V rail or CAN-H); conducts surge current to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47 |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| 600 W peak pulse power (10/1000 μs) | Handles ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges without degradation |
| MSL Level 1 (260 °C peak reflow) | Supports single-reflow SMT assembly without moisture-related popcorning or delamination |
| RoHS-compliant HE3 suffix | Meets JESD201 Class 2 whisker resistance - suitable for long-life industrial control systems |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple. IC Role / Device Role / Timing Role: Uni-directional clamping diode placed between power input and local regulator. Use Value: Limits transient voltage to ≤24.4 V, preventing damage to 3.3 V/5 V LDOs and microcontrollers. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge. IC Role / Device Role / Timing Role: Low-capacitance TVS on differential or single-ended signal traces near connector entry. Use Value: Sub-1 ns response preserves signal integrity while suppressing ±8 kV contact ESD per IEC 61000-4-2. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding PoE-powered Ethernet PHYs against induced lightning surges. IC Role / Device Role / Timing Role: Primary-level TVS on DC input side of isolated DC/DC converter. Use Value: Withstands 600 W surges per IEEE 802.3bt while maintaining <1 μA leakage for low-noise bias networks. |
Use Scenario: Input-stage surge protection in AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: First-line defense after bridge rectifier, before bulk capacitor. Use Value: Clamps 10/1000 μs surges to safe levels without derating primary MOSFET RDS(on) or transformer insulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15AHE3/5B | Same VWM (15 V), identical DO-214AB (SMB) package but larger footprint (4.57 mm × 3.94 mm vs. 6.48 mm × 3.94 mm); 600 W rating, slightly higher VC (24.4 V same) | Less effective thermal dissipation due to lower junction-to-lead RθJL (25 °C/W vs. 20 °C/W); not qualified to AEC-Q101 | Select SMBJ15AHE3/5B only if board space allows larger SMB package and AEC-Q101 is not required. |
| 1.5KE15A | Through-hole DO-201AD package; same 15 V VWM and 600 W rating; higher clamping voltage (25.5 V) and slower thermal response | Requires wave soldering; unsuitable for high-density SMT layouts or automotive vibration environments | Choose 1.5KE15A only for legacy through-hole designs where rework tolerance and manual assembly are prioritized. |
Compared with SMBJ15AHE3/5B and 1.5KE15A, the SMBG15HE3/5B offers superior thermal performance (RθJL = 20 °C/W), AEC-Q101 validation, and optimized gull-wing geometry for automated placement yield - making it the preferred choice for new automotive and industrial SMT designs requiring long-term reliability.
Availability
SMBG15HE3/5B is available at Aetrix Electronics and suitable for automotive power management, industrial sensor protection, and telecom line interface applications requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for SMBG15HE3/5B 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 high-reliability and automotive-grade solutions.
The SMBG series was developed specifically for surface-mount transient suppression in space-constrained, high-surge environments - targeting AEC-Q101 compliance, low-profile packaging, and robust clamping performance in automotive and industrial power systems.
FAQ
What is the maximum clamping voltage of SMBG15HE3/5B at its rated peak pulse current?
The SMBG15HE3/5B has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current of 24.6 A under the standard 10/1000 μs waveform. This value is measured at the device terminals and reflects worst-case voltage seen by downstream circuitry during surge events - critical for ensuring protected ICs remain within absolute maximum ratings.
Is SMBG15HE3/5B suitable for bi-directional transient protection?
No, SMBG15HE3/5B is a uni-directional TVS diode, indicated by the "A" suffix and cathode band marking. For bi-directional protection, Vishay specifies part numbers ending in "CA" (e.g., SMBG15CA). Using SMBG15HE3/5B in reverse-biased configurations risks permanent junction failure due to lack of symmetric breakdown capability.
Does SMBG15HE3/5B require derating at elevated ambient temperatures?
Yes, SMBG15HE3/5B must be derated above TA = 25 °C per Figure 2 in Vishay document 88456. At 85 °C ambient, its peak pulse power drops to approximately 420 W (70% of 600 W), and at 125 °C, it falls to ~240 W (40%). Designers must apply this derating when sizing for under-hood or enclosed industrial environments.
What does the "HE3/5B" suffix indicate in SMBG15HE3/5B?
The "HE3" denotes RoHS-compliant construction with AEC-Q101 qualification and JESD201 Class 2 whisker resistance; "5B" specifies packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. This distinguishes it from "E3/52" (7-inch reel, 750 units) and non-AEC-Q101 "E3" variants.
Can SMBG15HE3/5B be used in parallel for higher surge current handling?
No - parallel connection of SMBG15HE3/5B devices is not recommended due to VBR mismatch (16.7–18.5 V range), which causes uneven current sharing and potential thermal runaway. For higher IPPM, select a single higher-rated device (e.g., SMBG24HE3/5B) or use a TVS array with matched characteristics.
SMBG15HE3/5B 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 26.9V
- Current - Peak Pulse (10/1000µs):
- 22.3A
- 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)
SMBG15HE3/5B FAQ
1.How can I place an order for SMBG15HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG15HE3/5B 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 SMBG15HE3/5B reliable?
The price and inventory of SMBG15HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG15HE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG15HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG15HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG15HE3/5B?
SMBG15HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG15HE3/5B 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 SMBG15HE3/5B?
For technical support, including SMBG15HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG15HE3/5B requirements.
6.How does Aetrix verify that SMBG15HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG15HE3/5B 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 SMBG15HE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG15HE3/5B?
All SMBG15HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG15HE3/5B, 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 SMBG15HE3/5B part is unused and in its original packaging.
Return procedure for SMBG15HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG15HE3/5B Tags
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