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Vishay General Semiconductor - Diodes Division SMB10J12AHE3/52
- Part No.:
- SMB10J12AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J12AHE3/52.pdf
- Description:
- TVS DIODE 12VWM 19.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,909
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Product details
Overview
SMB10J12AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for high-energy surge protection on power and signal lines. It features a 12 V stand-off voltage (VWM), 13.3–14.7 V breakdown voltage (VBR), 19.9 V clamping voltage (VC) at 50.3 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial power supply rails.
For engineers reviewing the SMB10J12AHE3/52 datasheet, SMB10J12AHE3/52 pinout, SMB10J12AHE3/52 application, or SMB10J12AHE3/52 equivalent, key selection criteria include AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.43), unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within <1 ps to transients induced by inductive switching or ESD events. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling consistent clamping performance across repeated surges up to 1000 W.
The device is rated for -55 °C to +150 °C operating junction temperature, meets MSL Level 1 per J-STD-020 (260 °C reflow peak), and is qualified to AEC-Q101 for automotive under-hood and body electronics applications - with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 12 V - maximum continuous reverse operating voltage before conduction begins; defines safe DC/AC working margin in protected circuit. |
| VBR min/max | 13.3 V / 14.7 V at IT = 1.0 mA - tight breakdown window ensures predictable turn-on threshold and minimal overvoltage exposure. |
| VC @ IPPM | 19.9 V at 50.3 A - clamping voltage during 10/1000 µs surge; limits downstream IC stress to ≤20 V under full-rated transient. |
| PPPM | 1000 W - peak pulse power handling capacity; supports robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges. |
| IFSM | 100 A - non-repetitive forward surge rating; enables survivability during accidental reverse-bias misapplication or latch-up events. |
| TJ max | +150 °C - extended junction temperature rating allows use in engine control units and power converters without derating below 125 °C ambient. |
| RθJA | 72 °C/W - thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs board-level thermal design for sustained surge duty cycles. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with molded UL 94 V-0 compound and cathode band marking on terminal D.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry / surge return path | Connected to ground or low-impedance return plane; must be routed with minimum trace inductance for effective clamping. |
| Cathode (banded end) | Reverse-biased clamping node | Connected to protected line (e.g., 12 V rail or CAN_H); color band identifies polarity for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for ECUs, ADAS sensors, and infotainment power inputs. |
| Glass passivated junction | Eliminates moisture ingress and intermetallic migration, ensuring long-term VBR stability and leakage current <5 µA at VWM over 15-year service life. |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage overshoot during fast transients, protecting 16 V-tolerant microcontrollers and LIN transceivers without additional series impedance. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow assembly without popcorn cracking or delamination - compatible with standard SMB footprint land patterns. |
| Matte tin plating, J-STD-002 compliant | Ensures repeatable solder wetting and void-free joints on OSP- or ENIG-finished PCBs, critical for high-volume automotive manufacturing. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V battery-supplied engine control unit exposed to load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role: Primary shunt clamp on main power input, placed upstream of DC/DC converter and MCU LDO. Use Value: Limits transient voltage to ≤19.9 V, preventing latch-up or gate oxide damage in 20 V-rated power management ICs. |
Use Scenario: 4–20 mA current loop transmitter in factory automation subject to field wiring ESD and inductive kickback. IC Role / Device Role: Bidirectional protection on analog input/output lines interfacing with precision ADCs and op-amps. Use Value: Clamps ±19.9 V transients while maintaining <5 µA leakage at 12 V, preserving 16-bit measurement accuracy. |
| Consumer USB Power Delivery Port | Telecom Base Station DC Feed Line |
|
Use Scenario: USB-C PD port on portable medical device encountering hot-plug surges and cable discharge events. IC Role / Device Role: Unidirectional TVS on VBUS line, coordinated with internal OVP and current limiting. Use Value: Responds in <1 ps to 8 kV contact ESD (IEC 61000-4-2), clamping to 19.9 V before USB PD controller enters fault state. |
Use Scenario: -48 V DC feed line powering remote radio units in 5G base stations, subjected to lightning-induced surges. IC Role / Device Role: Secondary surge limiter downstream of GDT-based primary protection, absorbing residual energy. Use Value: Handles 1000 W pulses without degradation, reducing follow-on current stress on upstream crowbar circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12AHE3/52 | Same SMB package, identical VWM (12 V), but lower PPPM (600 W) and higher VC (21.2 V at 28.3 A). | Lower surge rating suits consumer-grade power supplies where ISO 7637-2 compliance is not required. | Select when cost sensitivity outweighs automotive surge margin; verify clamping headroom for 16 V-tolerant loads. |
| 1.5SMC12AH | Same electrical specs (VWM = 12 V, VC = 19.9 V), but larger SMC (DO-214AB) package with higher RθJA (50 °C/W) and 1500 W PPPM. | Better thermal performance supports higher duty-cycle surges in telecom power systems. | Choose when board space permits larger footprint and higher average power dissipation is needed. |
Compared with SMB10J12AHE3/52, SMBJ12AHE3/52 offers reduced surge robustness but lower BOM cost, while 1.5SMC12AH delivers superior thermal handling at the expense of PCB area - making SMB10J12AHE3/52 optimal for space-constrained AEC-Q101-compliant designs needing precise 1000 W clamping.
Availability
SMB10J12AHE3/52 is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial sensor signal conditioning, and telecom DC feed protection requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant packaging.
Supply support for SMB10J12AHE3/52 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The SMB10JxxAHE3 series belongs to Vishay's TRANSZORB® high-power TVS platform, engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive environments with minimal PCB footprint.
FAQ
What is the clamping voltage of SMB10J12AHE3/52 at its rated peak pulse current?
The SMB10J12AHE3/52 has a maximum clamping voltage (VC) of 19.9 V at 50.3 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected downstream circuitry sees no more than 19.9 V during full-rated surge events - critical for safeguarding 20 V-tolerant power management ICs and microcontrollers in automotive applications.
Is SMB10J12AHE3/52 qualified for automotive use?
Yes, SMB10J12AHE3/52 is explicitly AEC-Q101 qualified, as confirmed in Vishay document 88422 (Revision 09-Jan-2024). The "HE3" suffix denotes RoHS-compliant and AEC-Q101-qualified construction, validated for temperature cycling, highly accelerated life testing (HALT), and ESD robustness - making it suitable for engine control modules, ADAS camera power supplies, and body electronics.
What does the "/52" suffix mean in SMB10J12AHE3/52?
The "/52" suffix in SMB10J12AHE3/52 indicates the preferred packaging format: 750 units per 7-inch diameter plastic tape-and-reel. This is defined in Vishay's ordering information table (page 4 of document 88422) and ensures compatibility with standard SMT pick-and-place equipment used in high-volume automotive and industrial assembly lines.
How does SMB10J12AHE3/52 differ from bidirectional variants like SMB8J12CAHE3/52?
SMB10J12AHE3/52 is unidirectional with cathode-band polarity and 1000 W PPPM, whereas SMB8J12CAHE3/52 is bidirectional (no polarity marking), rated for 800 W PPPM and symmetric clamping in both directions. The unidirectional SMB10J12AHE3/52 provides lower leakage (<5 µA at 12 V) and tighter VBR tolerance, making it preferred for DC power rail protection where polarity is fixed and leakage-sensitive analog circuits are present.
What is the thermal resistance of SMB10J12AHE3/52, and how does it affect layout?
SMB10J12AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 72 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value requires PCB designers to allocate sufficient copper area and consider thermal vias if the device will experience repetitive surges - insufficient copper increases junction temperature, derating IPPM and shortening lifetime per Figure 2 in the Vishay datasheet.
SMB10J12AHE3/52 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):
- 12V
- Voltage - Breakdown (Min):
- 13.3V
- Voltage - Clamping (Max) @ Ipp:
- 19.9V
- Current - Peak Pulse (10/1000µs):
- 50.3A
- 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)
SMB10J12AHE3/52 FAQ
1.How can I place an order for SMB10J12AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J12AHE3/52 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 SMB10J12AHE3/52 reliable?
The price and inventory of SMB10J12AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J12AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J12AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J12AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J12AHE3/52?
SMB10J12AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J12AHE3/52 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 SMB10J12AHE3/52?
For technical support, including SMB10J12AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J12AHE3/52 requirements.
6.How does Aetrix verify that SMB10J12AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J12AHE3/52 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 SMB10J12AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J12AHE3/52?
All SMB10J12AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J12AHE3/52, 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 SMB10J12AHE3/52 part is unused and in its original packaging.
Return procedure for SMB10J12AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J12AHE3/52 Tags
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