BAS 70-05 B5003 Equivalent & Substitute Parts

Part Overview

The BAS 70-05 B5003 is a Schottky diode array manufactured by Infineon Technologies, configured as 1 pair common cathode with 70 V reverse voltage rating and 70 mA average rectified current per diode. The device is packaged in SOT-23-3 (TO-236-3, SC-59) surface mount configuration.

The BAS 70-05 B5003 carries an obsolete product status. Locating functionally equivalent active production alternatives is necessary to ensure design continuity, supply chain reliability, and access to current manufacturing support. Active substitute parts maintain identical electrical specifications and mechanical compatibility while offering current availability and manufacturer support.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Cathode	—
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	70	V
Current - Average Rectified (Io) (per Diode)	70	mA (DC)
Voltage - Forward (Vf) (Max) @ If	1	V @ 15 mA
Speed Classification	Small Signal ≤ 200mA (Io), Any Speed	—
Reverse Recovery Time (trr)	100	ps
Current - Reverse Leakage @ Vr	100	nA @ 50 V
Operating Temperature - Junction (Max)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BAS 70-05 B5003 are classified based on strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Diode Configuration: 1 Pair Common Cathode
Technology: Schottky
Voltage - DC Reverse (Vr) (Max): 70 V
Current - Average Rectified (Io) (per Diode): 70 mA (DC)
Voltage - Forward (Vf) (Max) @ If: 1 V @ 15 mA
Speed Classification: Small Signal ≤ 200mA (Io), Any Speed
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3

Packaging Variants: Substitute parts may differ in supplier device package designation (PG-SOT23, SOT-23, SOT-23-3) and distribution format (Tape & Reel, Cut Tape & Digi-Reel®) while maintaining mechanical and electrical compatibility.

Secondary Parameters: Reverse recovery time (trr), reverse leakage current, and operating temperature range may vary within acceptable limits for the application category. Parts are grouped by manufacturer and product status (Active vs. Obsolete).

Parameter Comparison

Part Number	Manufacturer	Product Status	Vr (Max) [V]	Io (per Diode) [mA]	Vf (Max) @ If [V @ mA]	trr [ps/ns]	Ir @ Vr [nA/µA @ V]	Tj (Max) [°C]	Package	Packaging Format
BAS 70-05 B5003	Infineon Technologies	Obsolete	70	70	1 @ 15	100 ps	100 nA @ 50	150	SOT-23-3	—
BAS7005E6433HTMA1	Infineon Technologies	Active	70	70	1 @ 15	100 ps	100 nA @ 50	150	SOT-23-3	Tape & Reel (TR)
BAS7005E6327HTSA1	Infineon Technologies	Active	70	70	1 @ 15	100 ps	100 nA @ 50	150	SOT-23-3	Cut Tape (CT) & Digi-Reel®
BAS70-05,215	NXP USA Inc.	Active	70	70	1 @ 15	—	10 µA @ 70	150	SOT-23-3	—
BAS70-05-7-F	Diodes Incorporated	Active	70	70	1 @ 15	5 ns	100 nA @ 50	125	SOT-23-3	Cut Tape (CT) & Digi-Reel®
BAS70-05,235	Nexperia USA Inc.	Active	70	70	1 @ 15	—	10 µA @ 70	150	SOT-23-3	Tape & Reel (TR)
BAR18FILM	STMicroelectronics	Active	70	70	0.41 @ 1	—	200 nA @ 50	150	SOT-23-3	Cut Tape (CT) & Digi-Reel®
BAS70-05-TP	Micro Commercial Co	Active	70	70	1 @ 15	5 ns	200 nA @ 50	125	SOT-23-3	Tape & Reel (TR)
BAS70-05FILM	STMicroelectronics	Active	70	70	1 @ 15	—	10 µA @ 70	150	SOT-23-3	Cut Tape (CT) & Digi-Reel®
BAS70-05W,115	Nexperia USA Inc.	Active	70	70	1 @ 15	—	10 µA @ 70	150	SOT-323	Tape & Reel (TR)
BAS70-05W,135	Nexperia USA Inc.	Active	70	70	1 @ 15	—	10 µA @ 70	150	SOT-323	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Electrical Equivalents (SOT-23-3 Package):

Parts BAS7005E6433HTMA1, BAS7005E6327HTSA1, BAS70-05,215, BAS70-05-7-F, BAS70-05,235, BAS70-05-TP, and BAS70-05FILM maintain full electrical and mechanical compatibility with the BAS 70-05 B5003. All are active production parts with current manufacturer support and RoHS3 compliance. Selection among these parts depends on packaging format availability (Tape & Reel vs. Cut Tape & Digi-Reel®) and manufacturer preference.

Infineon Technologies Direct Replacements:

BAS7005E6433HTMA1 and BAS7005E6327HTSA1 are Infineon-manufactured active equivalents with identical electrical specifications. These parts are recommended for designs requiring continuity with the original manufacturer. Both carry 30,864 and 32,526 units in stock respectively.

Alternative Manufacturer Options:

NXP USA Inc. (BAS70-05,215), Diodes Incorporated (BAS70-05-7-F), Micro Commercial Co (BAS70-05-TP), STMicroelectronics (BAS70-05FILM, BAR18FILM), and Nexperia USA Inc. (BAS70-05,235) provide functionally equivalent alternatives. All maintain the 70 V reverse voltage, 70 mA current rating, and SOT-23-3 package compatibility.

Package Variant (SOT-323):

BAS70-05W,115 and BAS70-05W,135 (Nexperia USA Inc.) provide electrical equivalence in the smaller SOT-323 (SC-70) package. These parts are suitable only for designs with PCB layout compatibility for SOT-323 footprints and do not represent direct mechanical substitutes for SOT-23-3 applications.

Compliance and Availability:

All recommended active parts carry RoHS3 compliance, REACH Unaffected status, and MSL 1 (Unlimited) moisture sensitivity rating. Combined inventory across active equivalents exceeds 400,000 units, ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can BAS70-05E6433HTMA1 directly replace BAS 70-05 B5003 in existing designs?

A: Yes. BAS7005E6433HTMA1 maintains identical electrical specifications (70 V reverse voltage, 70 mA current, 1 V forward voltage @ 15 mA) and SOT-23-3 package compatibility. The primary difference is packaging format (Tape & Reel vs. bulk). No circuit modifications are required.

Q: What is the difference between BAS70-05-7-F and BAS70-05-TP?

A: Both parts are functionally equivalent with 70 V, 70 mA ratings and SOT-23-3 packages. BAS70-05-7-F is manufactured by Diodes Incorporated with maximum junction temperature of 125°C and 5 ns reverse recovery time. BAS70-05-TP is manufactured by Micro Commercial Co with identical specifications. Selection depends on manufacturer preference and packaging format availability (Cut Tape vs. Tape & Reel).

Q: Why are BAS70-05W,115 and BAS70-05W,135 listed as alternatives if they use SOT-323 package?

A: These parts provide electrical equivalence but use the smaller SOT-323 (SC-70) package instead of SOT-23-3. They are suitable only for new designs with SOT-323 footprint compatibility or for applications where package size reduction is beneficial. Existing PCB designs using SOT-23-3 cannot accommodate SOT-323 packages without layout modification.

Q: What is the significance of the reverse leakage current variation (100 nA vs. 10 µA @ specified voltage)?

A: Reverse leakage current is provided in the input parameters. Parts with 100 nA @ 50 V leakage (BAS 70-05 B5003, BAS7005E6433HTMA1, BAS7005E6327HTSA1, BAS70-05-7-F) and parts with 10 µA @ 70 V leakage (BAS70-05,215, BAS70-05,235, BAS70-05FILM) are both within acceptable limits for the Schottky diode array category. Selection depends on application sensitivity to leakage current at operating voltage.

Q: Is BAR18FILM a suitable substitute despite different forward voltage specification?

A: BAR18FILM is listed as a manufacturer-recommended alternative. It maintains 70 V reverse voltage and 70 mA current rating in SOT-23-3 package. The forward voltage specification differs (410 mV @ 1 mA vs. 1 V @ 15 mA on the original part), reflecting different measurement conditions. BAR18FILM is a single diode configuration rather than a diode pair, which may affect circuit compatibility depending on application requirements.

Q: Are all substitute parts RoHS3 compliant?

A: All active substitute parts listed carry RoHS3 compliance certification. The original BAS 70-05 B5003 does not specify RoHS status due to obsolete product status. All active alternatives meet current environmental and regulatory requirements.

Q: What packaging formats are available for high-volume procurement?

A: Tape & Reel (TR) format is available from BAS7005E6433HTMA1 (Infineon), BAS70-05,235 (Nexperia), BAS70-05-TP (Micro Commercial Co), and BAS70-05W,115/BAS70-05W,135 (Nexperia). Cut Tape & Digi-Reel® format is available from BAS7005E6327HTSA1 (Infineon), BAS70-05-7-F (Diodes Incorporated), BAS70-05FILM (STMicroelectronics), and BAR18FILM (STMicroelectronics). Selection depends on assembly equipment compatibility and procurement volume requirements.

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