My Inquiry
My Account
Taiwan Semiconductor Corporation SMBJ10AH
- Part No.:
- SMBJ10AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ10AH.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,865
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ10AH from Taiwan Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, rated for 600W peak pulse power, 10V working stand-off voltage (VWM), and 17.0V maximum clamping voltage (VC) at 37A peak impulse current. It protects automotive and industrial control circuits against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the SMBJ10AH datasheet, SMBJ10AH pinout, SMBJ10AH application, or SMBJ10AH equivalent, key selection criteria include its AEC-Q101 qualification, <1.0ps response time, 1μA max leakage at 10V, 150°C junction rating, and compliance with J-STD-020 Level 1 moisture sensitivity.
Technical Context
The SMBJ10AH employs a glass-passivated silicon junction optimized for fast transient suppression in automotive power-line and signal-line protection. Its unidirectional configuration provides forward conduction capability with VF = 3.5V at 50A, enabling use in DC power rail clamping where reverse blocking and forward surge handling are both required.
Thermal performance is defined by RθJC = 10°C/W and RθJA = 55°C/W, supporting reliable operation under sustained 3W steady-state dissipation. The device meets ISO 7637-2 immunity requirements across all five standard test pulses without external circuit modification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 11.1 V / 12.3 V - Breakdown occurs within this range at 1 mA test current, ensuring predictable turn-on |
| VC @ IPP | 17.0 V at 37 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPK | 600 W - Peak non-repetitive surge power handling per IEC 61000-4-5 and ISO 7637-2 |
| ID @ VWM | <5 µA - Low leakage preserves system efficiency in battery-powered or low-power standby modes |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments and industrial enclosures |
| Response time | <1.0 ps - Sub-nanosecond switching ensures protection of high-speed logic and analog interfaces |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connects to lower-potential side of protected line; enables 3.5 V forward drop at 50 A surge |
| Cathode | Reverse-biased clamping node | Marked end; connects to higher-potential side (e.g., +12 V rail); conducts when transient exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements including temperature cycling, HTRB, and ESD |
| Glass passivated junction | Enhances long-term reliability and humidity resistance versus epoxy-passivated alternatives in harsh environments |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) without external filtering |
| J-STD-020 Level 1 | Zero floor life limitation - supports unlimited storage and reflow without baking preconditioning |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing and end-of-life processing |
Applications
| Automotive Power Line Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: 12 V battery rail in engine control unit exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery input and LDO/regulator input. Use Value: Limits transients to ≤17.0 V during 37 A ISO 7637-2 Pulse 1 events, preventing damage to 20 V-rated power management ICs. | Use Scenario: Digital input channel on programmable logic controller receiving 24 V DC sensor signals in factory automation. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side input trace before optocoupler or Schmitt trigger. Use Value: Suppresses EFT bursts (IEC 61000-4-4) and inductive kickback from solenoid drivers while maintaining <5 µA leakage at 24 V nominal. |
| LED Driver Output Protection | Automotive CAN Transceiver Protection |
Use Scenario: Constant-current LED driver output feeding exterior lighting modules subject to cable discharge events. IC Role / Device Role / Timing Role: Reverse-biased TVS across LED string terminals to absorb negative-going transients. Use Value: Clamps -17.0 V spikes within <1.0 ps, preserving LED forward voltage integrity and avoiding driver shutdown. | Use Scenario: CAN_H and CAN_L lines in automotive gateway module exposed to board-level ESD and supply coupling. IC Role / Device Role / Timing Role: Unidirectional TVS on each CAN line referenced to ground, leveraging low capacitance and fast response. Use Value: Maintains signal integrity with <1.0 ps response and no added jitter; clamps ±17.0 V surges without disrupting 1 Mbps CAN FD timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A | Non-AEC-Q101 version; identical electrical specs but not qualified for automotive use | Not suitable for automotive OEM or Tier-1 designs requiring AEC-Q101 documentation | Select SMBJ10A only for industrial or consumer applications where automotive qualification is unnecessary |
| SAC10 | Same VWM (10 V) and VC (17 V), but lower PPK (400 W); SOD-123FL package (smaller footprint) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 due to power derating | Choose SAC10 only for space-constrained, low-surge environments such as portable instrumentation inputs |
Compared with SMBJ10A and SAC10, SMBJ10AH uniquely combines AEC-Q101 qualification, 600W surge capacity, and DO-214AA mechanical robustness-making it the only option qualified for under-hood automotive power-line protection where full ISO 7637-2 compliance is mandatory.
Availability
SMBJ10AH is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, LED lighting systems, and CAN bus interface protection requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ10AH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive, industrial, and computing markets.
The SMBJH series was designed specifically for AEC-Q101-compliant transient suppression in 12 V and 24 V automotive power networks, emphasizing robustness, repeatable clamping, and zero-failure reliability under thermal and mechanical stress.
FAQ
What is the clamping voltage of SMBJ10AH and how is it measured?
The SMBJ10AH has a maximum clamping voltage (VC) of 17.0 V, measured at a peak impulse current (IPP) of 37 A using a standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and reflects worst-case voltage seen by downstream components during transient events, directly supporting design margin calculations for protected ICs.
Is SMBJ10AH suitable for bidirectional transient protection?
No, SMBJ10AH is a unidirectional TVS diode and is not rated for bidirectional operation. For bipolar applications, Taiwan Semiconductor specifies parts with "CH" or "CAH" suffixes (e.g., SMBJ10CH). Using SMBJ10AH in reverse-biased configurations beyond its specified VWM may result in premature failure or uncontrolled breakdown behavior.
Does SMBJ10AH require PCB layout adjustments compared to standard SMB packages?
No, SMBJ10AH uses the standard DO-214AA (SMB) footprint and pad layout defined in Taiwan Semiconductor's Package Outline Dimensions document. Its cathode band marking and terminal polarity align with industry-standard SMB orientation, allowing direct replacement in existing designs without layout revision.
What is the forward voltage drop of SMBJ10AH and when does it matter?
The SMBJ10AH exhibits a forward voltage (VF) of 3.5 V at 50 A, applicable during positive-going surges on the anode. This parameter matters in unidirectional configurations where the device must handle forward surge currents-such as in automotive load-dump scenarios-ensuring the protected regulator or switch sees no more than 3.5 V above ground during extreme forward conduction.
How does SMBJ10AH meet ISO 7637-2 compliance?
SMBJ10AH meets ISO 7637-2 Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (capacitive coupling) requirements through validated clamping performance at rated current levels, thermal stability up to +150°C, and sub-1.0 ps response time. Compliance is confirmed via third-party testing per the standard's waveform definitions and energy thresholds-not inferred from datasheet parameters alone.
SMBJ10AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 37A
- 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 (SMB)
SMBJ10AH FAQ
1.How can I place an order for SMBJ10AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ10AH 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 SMBJ10AH reliable?
The price and inventory of SMBJ10AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ10AH is usually 5 days.
3.What payment methods are accepted for SMBJ10AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ10AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ10AH?
SMBJ10AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ10AH 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 SMBJ10AH?
For technical support, including SMBJ10AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ10AH requirements.
6.How does Aetrix verify that SMBJ10AH is sourced from the original manufacturer or authorized distributors?
All SMBJ10AH 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 SMBJ10AH meets industry standards.
7.What is the process for return or replacement of SMBJ10AH?
All SMBJ10AH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ10AH, 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 SMBJ10AH part is unused and in its original packaging.
Return procedure for SMBJ10AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ10AH Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
