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Vishay General Semiconductor - Diodes Division SMB10J7.5AHE3/52
- Part No.:
- SMB10J7.5AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J7.5AHE3/52.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,202
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Product details
Overview
SMB10J7.5AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA, 12.9 V clamping voltage (VC) at 100 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive ECUs, industrial sensor interfaces, and power supply input stages.
For engineers reviewing the SMB10J7.5AHE3/52 datasheet, SMB10J7.5AHE3/52 pinout, SMB10J7.5AHE3/52 application, or SMB10J7.5AHE3/52 equivalent, key selection criteria include AEC-Q101 qualification, unidirectional polarity, 12.9 V clamping performance at 100 A, thermal resistance (RθJA = 72 °C/W), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping-type overvoltage protector using an avalanche junction structure. Its glass-passivated silicon die delivers fast response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive transients induced by inductive load switching or ESD events.
Designed for surface-mount integration, SMB10J7.5AHE3/52 meets J-STD-020 MSL Level 1 (260 °C peak reflow), supports 150 °C maximum junction temperature, and is qualified to AEC-Q101 for automotive under-hood applications - requiring no external biasing and functioning solely in reverse-biased standby mode until clamping threshold is exceeded.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA; defines safe DC rail margin for 9–12 V systems |
| VBR (min/max) | 8.33 V / 9.21 V at IT = 1.0 mA - ensures reliable turn-on during transients while avoiding false triggering on ripple or noise |
| VC @ IPPM | 12.9 V at 100 A (10/1000 µs) - limits downstream IC voltage stress to safe levels during 1 kV EFT or ISO 7637-2 Pulse 1/2a events |
| PPPM | 1000 W - enables robust suppression of high-energy surges common in 12 V automotive power networks |
| RθJA | 72 °C/W - requires ≥5.0 mm × 5.0 mm copper pad per terminal to maintain TJ ≤ 150 °C under full-rated surge |
| Polarity | Unidirectional - cathode marked with band; blocks forward conduction, clamps only reverse overvoltage |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded plastic case with matte tin-plated leads; dimensions 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); UL 94 V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line (e.g., +12 V rail); conducts avalanche current to ground during overvoltage |
| Anode | Reference/return node | Connected to system ground or low-impedance return path; completes clamping loop with minimal inductance |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR and low leakage over 15-year automotive life; eliminates moisture-induced parameter drift |
| Low-profile SMB package | Enables high-density PCB layout in space-constrained modules like ADAS camera ECUs and motor drivers |
| AEC-Q101 qualification | Validates operation across -55 °C to +150 °C junction range with zero latent defects in automotive thermal cycling profiles |
| 1000 W peak pulse rating | Withstands ISO 7637-2 Pulse 5a (load dump) up to 60 V/100 ms without degradation when properly heatsinked |
| MSL Level 1 compliance | Supports single-reflow assembly at 260 °C peak without delamination or parametric shift |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs against load dump and jump-start transients in body control modules. IC Role / Device Role / Timing Role: Clamping TVS placed between VCC and GND, directly upstream of LDO regulator input. Use Value: Limits voltage to ≤12.9 V during 100 A surge, preventing LDO overvoltage failure and ensuring MCU reset integrity. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) from ESD and cable discharge events in factory automation sensors. IC Role / Device Role / Timing Role: Unidirectional TVS connected from signal line to ground, with cathode to signal. Use Value: Clamps transients within <1 ns to protect precision op-amps and ADC front-ends without affecting 20 kHz signal bandwidth. |
| DC-DC Converter Input Stage | Automotive Camera Module Power Entry |
Use Scenario: Shielding buck converter input capacitors and MOSFETs from ISO 16750-2 supply spikes in infotainment head units. IC Role / Device Role / Timing Role: Primary surge clamp on VIN rail, positioned before input filter inductor. Use Value: Absorbs 1000 W pulses without derating at TA = 105 °C when mounted on 5 mm² copper pads, preserving converter efficiency. | Use Scenario: Guarding 5 V power input of rear-view camera modules exposed to hot-swap and reverse-battery conditions. IC Role / Device Role / Timing Role: Unidirectional TVS with cathode to +5 V rail, anode to ground; coordinated with reverse-polarity protection FET. Use Value: Survives 1000 W load dump surges while maintaining <1 μA leakage at 5 V, eliminating standby current penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5AHE3/52 | Same VWM/VBR/VC specs but lower PPPM (600 W); identical SMB package and AEC-Q101 qualification | Not suitable for ISO 7637-2 Pulse 5a; limited to lower-energy transients like ESD and EFT | Select SMBJ7.5AHE3/52 only if system-level surge testing confirms ≤600 W requirement and cost optimization is critical |
| SMCJ7.5AHE3/52 | Same electrical specs but larger SMC (DO-214AB) package; higher thermal mass and RθJA = 35 °C/W | Requires more PCB area; better suited for high-temperature environments (>125 °C ambient) or repeated surge duty cycles | Choose SMCJ7.5AHE3/52 when thermal derating margin is insufficient with SMB footprint or when legacy SMC layout exists |
Compared with SMBJ7.5AHE3/52 and SMCJ7.5AHE3/52, SMB10J7.5AHE3/52 uniquely balances 1000 W surge capacity with compact SMB packaging and automotive qualification - making it optimal for next-gen ADAS and domain controller power entry designs where space and energy rating are both constrained.
Availability
SMB10J7.5AHE3/52 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and DC-DC converter input protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SMB10J7.5AHE3/52 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, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive-grade qualification.
The SMB10J series belongs to Vishay's TRANSZORB® high-power TVS family, engineered specifically for AEC-Q101-compliant surge suppression in 12 V and 24 V automotive power networks and industrial equipment subject to IEC 61000-4-5 and ISO 7637-2 stress.
FAQ
What is the clamping voltage of SMB10J7.5AHE3/52 at its rated peak pulse current?
The SMB10J7.5AHE3/52 has a maximum clamping voltage (VC) of 12.9 V at 100 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The SMB10J7.5AHE3/52 maintains this clamping performance across its qualified operating temperature range (-55 °C to +150 °C junction).
Is SMB10J7.5AHE3/52 suitable for bidirectional signal line protection?
No, SMB10J7.5AHE3/52 is a unidirectional TVS diode and must not be used on AC-coupled or bidirectional data lines. Its cathode-band marking indicates polarity-sensitive operation: it clamps only reverse-voltage transients and conducts forward current above ~3.5 V. For bidirectional protection, use the SMB10J7.5CA variant or equivalent bidirectional part - the SMB10J7.5AHE3/52 is strictly for DC rail or unidirectional signal protection.
Does SMB10J7.5AHE3/52 require a heatsink for 1000 W surge handling?
No discrete heatsink is required, but SMB10J7.5AHE3/52 must be mounted on minimum 5.0 mm × 5.0 mm copper pads per terminal to achieve its rated 1000 W peak pulse power. The 72 °C/W junction-to-ambient thermal resistance assumes this pad layout; reducing pad area causes thermal derating per Figure 2 in the datasheet. No additional thermal interface material or mechanical heatsink is needed for single-pulse operation.
What does the "HE3" suffix indicate in SMB10J7.5AHE3/52?
The "HE3" suffix in SMB10J7.5AHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting J-STD-002 solderability requirements. It distinguishes this automotive-grade version from commercial "E3" variants and halogen-free "HM3" versions. The "/52" indicates 7-inch tape-and-reel packaging with 750 units per reel - a standard logistics code used by Vishay for SMT assembly.
Can SMB10J7.5AHE3/52 replace SMBJ7.5AHE3/52 in an existing design?
SMB10J7.5AHE3/52 is not a drop-in replacement for SMBJ7.5AHE3/52 due to higher peak pulse power (1000 W vs. 600 W) and associated thermal and layout implications. While both share the same SMB package and pinout, the SMB10J7.5AHE3/52 draws more surge current and requires verification of PCB copper area, grounding, and adjacent component spacing to avoid localized heating. Redesign validation is required before substitution.
SMB10J7.5AHE3/52 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 77.5A
- Power - Peak Pulse:
- 1000W (1kW)
- 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 (SMB)
SMB10J7.5AHE3/52 FAQ
1.How can I place an order for SMB10J7.5AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J7.5AHE3/52 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 SMB10J7.5AHE3/52 reliable?
The price and inventory of SMB10J7.5AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J7.5AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J7.5AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J7.5AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J7.5AHE3/52?
SMB10J7.5AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J7.5AHE3/52 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 SMB10J7.5AHE3/52?
For technical support, including SMB10J7.5AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J7.5AHE3/52 requirements.
6.How does Aetrix verify that SMB10J7.5AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J7.5AHE3/52 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 SMB10J7.5AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J7.5AHE3/52?
All SMB10J7.5AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J7.5AHE3/52, 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 SMB10J7.5AHE3/52 part is unused and in its original packaging.
Return procedure for SMB10J7.5AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J7.5AHE3/52 Tags
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