1N914B,113 Equivalent & Substitute Parts

Part Overview

The 1N914B,113 is a general-purpose rectifier diode manufactured by NXP USA Inc., rated for 100 V DC reverse voltage and 200 mA average rectified current in a DO-35 axial through-hole package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The 1N914B,113 operates with a maximum forward voltage of 1 V at 100 mA and features a reverse recovery time of 4 ns, suitable for small-signal switching applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	200	mA
Voltage - Forward (Vf) (Max) @ If	1 V @ 100 mA	V
Reverse Recovery Time (trr)	4	ns
Current - Reverse Leakage @ Vr	5	µA @ 75 V
Capacitance @ Vr, F	4	pF @ 0V, 1MHz
Mounting Type	Through Hole	-
Package / Case	DO-204AH, DO-35, Axial	-
Operating Temperature - Junction (Max)	175	°C
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the 1N914B,113 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 100 V
Current - Average Rectified (Io): Must equal or exceed 200 mA
Reverse Recovery Time (trr): Must equal or be faster than 4 ns
Package / Case: Must be DO-204AH, DO-35, or Axial configuration
Mounting Type: Must be Through Hole

Secondary Compatibility Factors:

Forward voltage characteristics at specified current levels
Reverse leakage current specifications
Operating temperature range
RoHS and REACH compliance status

Substitute parts are grouped into two categories based on electrical performance alignment with the 1N914B,113 specifications.

Category A - Full Parameter Match: Parts meeting or exceeding all primary criteria with identical or superior electrical characteristics and active product status.

Category B - Reduced Voltage Rating: Parts with voltage ratings below 100 V but matching or exceeding current and speed specifications. These parts are suitable only for applications where the actual reverse voltage stress does not exceed the substitute part's rating.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [mA]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [µA or nA]	Package	Product Status
1N914B,113	NXP USA Inc.	100	200	1 @ 100 mA	4	5 µA @ 75 V	DO-35	Obsolete
1N4148	Taiwan Semiconductor Corporation	100	150	1 @ 10 mA	4	5 µA @ 75 V	DO-35	Active
1N4148-T26A	onsemi	100	200	1 @ 10 mA	4	5 µA @ 75 V	DO-35	Active
1N4148-TAP	Vishay General Semiconductor - Diodes Division	75	300	1 @ 10 mA	8	25 nA @ 20 V	DO-35	Active
1N4148TA	Fairchild Semiconductor	100	200	1 @ 10 mA	4	5 µA @ 75 V	DO-35	Active
1N4148TR	Fairchild Semiconductor	100	200	1 @ 10 mA	4	5 µA @ 75 V	DO-35	Active
1N4149	Microchip Technology	75	200	1 @ 10 mA	4	20 nA @ 20 V	DO-35	Active
1N4446	Microchip Technology	75	200	1 @ 20 mA	4	25 nA @ 20 V	DO-35	Active
1N4447	Microchip Technology	75	200	1 @ 20 mA	4	25 nA @ 20 V	DO-35	Active
1N4448	Microchip Technology	75	200	1 @ 100 mA	4	25 nA @ 20 V	DO-35	Discontinued at DiGi Electronics

Engineering Selection Recommendations

Category A - Recommended Substitutes (Full Voltage Rating Match):

The following parts meet or exceed all primary electrical parameters of the 1N914B,113 and maintain active product status:

1N4148-T26A (onsemi): Matches 100 V reverse voltage and 200 mA current rating with 4 ns recovery time. Active product status with ROHS3 compliance. Operating temperature range -55°C to 175°C.
1N4148TA (Fairchild Semiconductor): Matches 100 V reverse voltage and 200 mA current rating with 4 ns recovery time. Active product status. Maximum junction temperature 175°C.
1N4148TR (Fairchild Semiconductor): Matches 100 V reverse voltage and 200 mA current rating with 4 ns recovery time. Active product status with ROHS3 compliance. Operating temperature range -65°C to 175°C.

Category B - Conditional Substitutes (Reduced Voltage Rating):

The following parts have voltage ratings below 100 V and are suitable only for applications where reverse voltage stress does not exceed the substitute part's maximum rating:

1N4148 (Taiwan Semiconductor Corporation): 100 V rating with 150 mA current. Active product status. Note: Current rating is 25% below the 1N914B,113 specification.
1N4148-TAP (Vishay General Semiconductor): 75 V rating with 300 mA current and 8 ns recovery time. Active product status. Reverse recovery time is slower than the original part.
1N4149 (Microchip Technology): 75 V rating with 200 mA current. Active product status. RoHS non-compliant.
1N4446 (Microchip Technology): 75 V rating with 200 mA current. Active product status. RoHS non-compliant.
1N4447 (Microchip Technology): 75 V rating with 200 mA current. Active product status. RoHS non-compliant.
1N4448 (Microchip Technology): 75 V rating with 200 mA current. Discontinued at DiGi Electronics. RoHS non-compliant.

Compliance Considerations:

All Category A substitutes maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory requirements. Category B substitutes include both compliant and non-compliant options; compliance status must be verified against application requirements.

Frequently Asked Questions (FAQ)

Q: Can the 1N4148 replace the 1N914B,113 in all applications?

A: The 1N4148 has a reduced current rating of 150 mA compared to the 1N914B,113's 200 mA specification. It is suitable only for applications where the actual average rectified current does not exceed 150 mA. Voltage rating and recovery time are equivalent.

Q: What is the primary difference between Category A and Category B substitutes?

A: Category A substitutes maintain the 100 V reverse voltage rating of the original 1N914B,113. Category B substitutes have reduced voltage ratings of 75 V and are suitable only for applications where the actual reverse voltage stress does not exceed 75 V.

Q: Are the 1N4148-T26A, 1N4148TA, and 1N4148TR electrically identical?

A: These three parts share identical electrical specifications: 100 V reverse voltage, 200 mA current, 1 V forward voltage at 10 mA, and 4 ns recovery time. They differ in manufacturer, packaging format, and operating temperature ranges. The 1N4148TR offers the widest operating temperature range (-65°C to 175°C).

Q: Why do some substitutes show lower reverse leakage current specifications?

A: Reverse leakage current is measured at different voltage and temperature conditions across manufacturers. Lower leakage values indicate superior performance characteristics but do not prevent substitution if the original specification is met or exceeded.

Q: Is the 1N4148-TAP suitable as a direct replacement?

A: The 1N4148-TAP has a 75 V rating (below the 100 V requirement) and a slower recovery time of 8 ns (compared to 4 ns). It is suitable only for applications with maximum reverse voltage of 75 V and where the slower recovery time does not impact circuit performance.

Q: What packaging considerations apply to these substitutes?

A: All listed substitutes use DO-35 axial through-hole packaging, maintaining mechanical compatibility with the original 1N914B,113. Packaging format variations (Cut Tape, Bulk, Reel) affect procurement and handling but not electrical performance.

Q: Should I prioritize active product status when selecting a substitute?

A: Yes. Category A substitutes (1N4148-T26A, 1N4148TA, 1N4148TR) are all active products with established supply chains. The 1N4448 is discontinued at DiGi Electronics and should be avoided for new designs requiring long-term availability.

Q: Are there RoHS compliance differences among the substitutes?

A: Category A substitutes are ROHS3 compliant, matching the original part. Category B substitutes include both compliant (1N4148-TAP) and non-compliant options (1N4149, 1N4446, 1N4447, 1N4448). Compliance status must align with application and regulatory requirements.

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